Sennheiser Car Stereo System EK 300 IEM User Guide

EK 300 IEM  
Instruction manual  
 
Contents  
Contents  
Important safety instructions .......................................................................... 2  
Areas of application ........................................................................................ 3  
The frequency bank system .......................................................................... 3  
Delivery includes .................................................................................................. 4  
Product overview ................................................................................................. 5  
Overview of the EK 300 IEM G3 diversity receiver .................................... 5  
Overview of the displays ................................................................................ 6  
Putting the diversity receiver into operation ............................................... 7  
Charging the accupack .................................................................................... 7  
Connecting the earphones ............................................................................. 7  
Attaching the diversity receiver to clothing .............................................. 8  
Using the diversity receiver .............................................................................. 9  
Switching the diversity receiver on/off and adjusting the volume ...... 9  
Deactivating the lock mode temporarily .................................................... 9  
Selecting a standard display ...................................................................... 10  
Using the operating menu ............................................................................. 11  
The buttons .................................................................................................... 11  
Adjusting settings via the operating menu ............................................... 14  
The main menu “Menu” .............................................................................. 14  
The extended menu “Advanced Menu” ................................................... 17  
Synchronizing an SR 300 IEM G3 transmitter with the  
diversity receiver .............................................................................................. 20  
Setting the transmitters to intermodulation-free channels  
(Easy Setup Sync) ......................................................................................... 20  
Synchronizing transmitters with diversity receivers (Sync) ............... 21  
Using freely selectable receiving frequencies ......................................... 21  
Cleaning the diversity receiver ...................................................................... 22  
Recommendations and tips ........................................................................... 22  
If a problem occurs ... ....................................................................................... 23  
Accessories ......................................................................................................... 24  
Specifications .................................................................................................... 24  
Manufacturer Declarations ............................................................................. 25  
Index .................................................................................................................... 27  
For further information, visit the EK 300 IEM G3 product  
page on our website at www.sennheiser.com.  
1
 
Important safety instructions  
Important safety instructions  
• Read this instruction manual.  
• Keep this instruction manual. Always include this instruction manual  
when passing the product on to third parties.  
• Heed all warnings and follow all instructions in this instruction manual.  
• Use only a cloth for cleaning the product.  
• Do not place the product near any heat sources such as radiators, stoves,  
or other devices (including amplifiers) that produce heat.  
• Only use attachments/accessories specified by Sennheiser.  
• Refer all servicing to qualified service personnel.  
Servicing is required if the product has been damaged in any way, liquid  
has been spilled, objects have fallen inside, the product has been  
exposed to rain or moisture, does not operate properly or has been  
dropped.  
• WARNING: To reduce the risk of short circuits, do not use the product  
near water and do not expose it to rain or moisture.  
• This product is also intended for professional use. Commercial use is  
subject to the safety-at-work regulations. Sennheiser, as the manufac-  
turer, is therefore obliged to expressly point out possible health risks  
arising from use.  
This product is capable of producing sound pressure exceeding  
85 dB(A). 85 dB(A) is the sound pressure corresponding to the  
maximum permissible volume which is by law (in some countries)  
allowed to affect your hearing for the duration of a working day. It is  
used as a basis according to the specifications of industrial medicine.  
Higher volumes or longer durations can damage your hearing. At higher  
volumes, the duration must be shortened in order to prevent hearing  
damage. The following are sure signs that you have been subjected to  
excessive noise for too long a time:  
– You can hear ringing or whistling sounds in your ears.  
– You have the impression (even for a short time only) that you can no  
longer hear high notes.  
Replacement parts  
When replacement parts are required, be sure the service technician uses  
replacement parts specified by Sennheiser or those having the same char-  
acteristics as the original part. Unauthorized substitutions may result in  
fire, electric shock, or other hazards.  
Intended use  
Intended use of the EK 300 IEM G3 diversity receiver includes:  
• having read these instructions especially the chapter “Important safety  
instructions”,  
• using the product within the operating conditions and limitations  
described in this instruction manual.  
“Improper use” means using the product other than as described in this  
instruction manual, or under operating conditions which differ from those  
described herein.  
2
 
 
The EK 300 IEM G3 diversity receiver  
The EK 300 IEM G3 diversity receiver  
This diversity receiver is part of the evolution wireless series generation 3  
(ew G3). With this series, Sennheiser offers high-quality state-of-the-art  
RF transmission systems with a high level of operational reliability and  
ease of use. Transmitters and receivers are designed for monitoring appli-  
cations and permit wireless transmission with studio-quality sound.  
Features of the evolution wireless 300 IEM G3 series:  
• Optimized PLL synthesizer and microprocessor technology  
HDX noise reduction system  
• Adaptive diversity technology  
• Switching bandwidth of 42 MHz  
• Scan function (Easy Setup) for scanning the frequency banks for unused  
channels  
• Adjustable and switchable limiter  
Adaptive diversity  
This diversity receiver uses the ground connection of the earphones cable  
as its second antenna to provide improved reception.  
Areas of application  
The receiver can be combined with the SR 300 IEM G3 transmitter.  
Diversity receiver  
Earphones  
Transmitter  
EK 300 IEM G3  
IE 4  
SR 300 IEM G3  
PEAK PEAK  
B.Ch:  
516.000  
1.  
1
ew300IEM  
MHz  
Stereo Transmitter  
0
0
-10 -10  
-20 -20  
-30 -30  
-40 -40  
EQ  
Standard -18dB  
AF  
I
AF II  
The transmitter is available in the same UHF frequency ranges and is  
equipped with the same frequency bank system with factory-preset  
frequencies. An advantage of the factory-preset frequencies is that  
• a transmission system is ready for immediate use after switch-on,  
• several transmission systems can be operated simultaneously on the  
preset frequencies without causing intermodulation interference.  
The frequency bank system  
The diversity receiver is available in 6 UHF frequency ranges with  
1,680 receiving frequencies per frequency range:  
Range A:  
516 – 558  
Range G:  
566 – 608  
Range B:  
626 – 668  
Range C:  
734 – 776  
Range D:  
780 – 822  
Range E:  
823 – 865  
3
 
     
Delivery includes  
Each frequency range (A–E, G) offers 26 frequency banks with up to  
16 channels each:  
Channel 1 – frequency preset  
Channel 2 – frequency preset  
Frequency bank 1 ... 20  
Channel 16 – frequency preset  
Channel 1 – freely selectable frequency  
Channel 2 – freely selectable frequency  
Frequency bank U1 ... U6  
Channel 16 – freely selectable frequency  
Each of the channels in the frequency banks “1” to “20” has been factory-  
preset to a fixed receiving frequency (frequency preset). The factory-  
preset frequencies within one frequency bank are intermodulation-free.  
These frequencies cannot be changed.  
For an overview of the frequency presets, please refer to the supplied  
frequency information sheet. Updated versions of the frequency informa-  
tion sheet can be downloaded from the EK 300 IEM G3 product page on our  
website at www.sennheiser.com.  
The frequency banks “U1” to “U6” allow you to freely select and store  
receiving frequencies. It might be that these receiving frequencies are not  
intermodulation-free (see page 20).  
Delivery includes  
The packaging contains the following items:  
1 EK 300 G3 IEM diversity receiver  
2 AA size batteries, 1.5 V  
1 pair of IE 4 earphones  
1 instruction manual  
1 frequency information sheet  
4
 
 
Product overview  
Product overview  
Overview of the EK 300 IEM G3 diversity receiver  
³
»
·
¿
ƹ
²
Ƹ
¹
´
²
º
¸
¾
µ
¸
³ On/off/volume control  
· 3.5 mm stereo jack socket (PHONES), lockable  
(the ground contact is used by antenna II)  
» Antenna I  
¿ Operation and battery status indicator, red LED  
lit = ON  
flashing = LOW BATT  
´ RF signal indication, green LED  
lit = RF  
² Charging contacts  
SET button  
º ̆/̄ rocker button (UP/DOWN)  
¾ Battery compartment  
µ Battery compartment cover  
¸ Battery compartment catches  
¹ Infra-red interface  
Ƹ ESC button  
ƹ Display panel, backlit in orange  
5
 
                 
Product overview  
Overview of the displays  
After switch-on, the diversity receiver displays the “Frequency/Name”  
standard display. For further illustrations and examples of the different  
standard displays, refer to page 10.  
The display backlighting is automatically reduced after approx. 20 seconds.  
MHz  
823.925  
ew300 IEM  
MUTE  
AF P  
RF  
Display  
RF level “RF”  
(Radio Frequency)  
Meaning  
Diversity display:  
Antenna input I is active  
Antenna input II is active  
RF signal level:  
Field strength of the received signal  
RF  
AF  
Squelch threshold level  
Audio level “AF”  
Peak hold function  
(Audio Frequency)  
Modulation of the transmitter  
(channel-separated when the  
transmitter is set to stereo mode)  
When the display shows full deflec-  
tion, the audio input level is exces-  
sively high.  
Frequency  
Current receiving frequency  
(see page 17)  
Name  
Freely selectable name of the receiver  
(see page 15)  
Lock mode icon  
Lock mode is activated (see page 10)  
Battery status  
Charge status:  
approx. 100%  
approx. 70%  
approx. 30%  
charge status is critical, the red  
LOW BATT LED ¿ is flashing  
:
¿
Muting function  
Mute” is only displayed on the “Frequency/  
Name” standard display (see page 10)  
MUTE”  
• when the transmitter’s RF signal is  
deactivated or  
• when the transmitter is set to mono mode  
and therefore does not transmit a pilot  
tone but the receiver’s pilot tone evalua-  
tion is activated.  
or audio channels  
The audio channels are only displayed on the  
Frequency/Limiter” and “Frequency/High  
Boost” standard displays (see page 10)  
Stereo  
Focus  
Pilot tone “P”  
Activated pilot tone evaluation  
(see page 18)  
6
 
         
Putting the diversity receiver into operation  
Putting the diversity receiver into  
operation  
Inserting the batteries/accupack  
For powering the diversity receiver, you can either use two 1.5 V AA size  
batteries or the rechargeable Sennheiser BA 2015 accupack (see “Accesso-  
ries” on page 24).  
̈ Open the battery compartment by pushing the two catches ¸ in the  
direction of the arrows and open the cover µ.  
̈ Insert the two batteries or the accupack as shown above. Please  
observe correct polarity when inserting the batteries/accupack.  
̈ Close the battery compartment by pressing on the center of the  
cover µ.  
The battery compartment cover µ locks into place with an audible  
click.  
Charging the accupack  
To charge the BA 2015 accupack:  
̈ Insert the diversity receiver into the L 2015 charger (see “Accessories”  
on page 24).  
The L 2015 charger can only charge the combination BA 2015  
accupack/diversity receiver. Standard batteries (primary cells) or  
individual rechargeable battery cells cannot be charged.  
Connecting the earphones  
̈ Connect the earphones to the socket ·.  
The ground connection of the earphones cable serves as the  
antenna for the second diversity section. For details on the  
connector assignment, refer to the diagram on page 25.  
7
 
       
Putting the diversity receiver into operation  
Attaching the diversity receiver to clothing  
You can use the belt clip ƺ to attach the diversity receiver to clothing  
(e.g. belt, waistband).  
ƺ
The belt clip is detachable so that you can also attach the diversity receiver  
with the antenna pointing downwards. To do so, withdraw the belt clip  
from its fixing points and attach it the other way round. The belt clip is  
secured so that it cannot slide out of its fixing points accidentally.  
To detach the belt clip:  
̈ Lift one side of the belt clip as shown.  
̈ Press down the belt clip at one fixing point and pull it out of the receiver  
housing.  
̈ Repeat for the other side.  
8
 
 
Using the diversity receiver  
Using the diversity receiver  
To establish a transmission link, proceed as follows:  
1. Switch the diversity receiver on (see next section)  
2. Switch a transmitter on  
mitter).  
(see the instruction manual of the trans-  
The transmission link is established and the receiver’s RF level display  
RFreacts.  
It is vital to observe the notes on frequency selection on page 20.  
If you cannot establish a transmission link between transmitter and  
receiver, read the chapter “Synchronizing an SR 300 IEM G3 transmitter  
with the diversity receiver” on page 20.  
Switching the diversity receiver on/off and adjusting  
the volume  
To switch the diversity receiver on:  
̈ Turn the volume control ³ clockwise until it clicks.  
The red ON LED ¿ lights up. The “Frequency/Name” standard display  
appears on the display panel.  
To switch the diversity receiver off:  
̈ Turn the volume control ³ counterclockwise until it clicks.  
The red ON LED ¿ goes off and the diversity receiver switches off.  
To adjust the volume:  
CAUTION!  
Hearing damage due to high volumes!  
Listening at high volume levels for long periods can lead  
to permanent hearing defects.  
̈ Set the volume to a low level before putting the  
earphones on.  
̈ Do not continuously expose yourself to high volumes.  
̈ Turn the volume control ³.  
9
 
   
Using the diversity receiver  
Deactivating the lock mode temporarily  
You can activate or deactivate the automatic lock mode via the “Auto  
Lock” menu item (see page 16). If the lock mode is activated, you have to  
temporarily deactivate it in order to be able to operate the receiver:  
SET  
̈ Press the SET button.  
Locked” appears on the display panel.  
̈ Press the rocker button.  
Unlock?” appears on the display panel.  
SET  
̈ Press the SET button.  
– When you are in the operating menu, the lock mode remains  
deactivated until you exit the operating menu.  
– When one of the standard displays is shown, the lock mode  
is automatically activated after 10 seconds.  
The lock mode icon flashes prior to the lock mode being activated again.  
MHz  
823.925  
ew300 IEM  
MUTE  
AF P  
RF  
Selecting a standard display  
̈ Press the ESC button to select a standard display. In stereo  
ESC  
mode (see page 16), you can alternatively press the rocker  
button.  
Contents of the display  
Selectable standard display  
Frequency/Name”  
MHz  
823.925  
with “MUTE” display ቨ  
ew300 IEM  
MUTE  
RF AF  
RF AF  
RF AF  
P
Frequency/Limiter”  
B.CH 1.1  
Lim: - 6dB  
P
with display of the audio channels  
(Stereo/Focus) ቨ  
Frequency/High Boost“  
823.925MHz  
EQ  
with display of the audio channels  
(Stereo/Focus) ቨ  
P
For more detailed information, refer to the chapter “Overview of the  
displays” on page 6.  
10  
 
     
Using the operating menu  
Using the operating menu  
A special feature of the Sennheiser ew G3 series is the consistent, intuitive  
menu structure of transmitters and receivers. As a result, adjustments to  
the settings can be made quickly – even in stressful situations, for example  
on stage or during a live show or presentation.  
The buttons  
Button  
Function of the button  
Press the ESC button  
• Selects a standard display (see page 10)  
• Cancels the entry and returns to the current  
standard display (ESC function)  
ESC  
Press the SET button  
• Changes from the current standard display  
to the operating menu  
SET  
• Calls up a menu item  
• Enters a submenu  
• Stores the settings and returns to the  
operating menu  
Press the rocker button • In Focus mode:  
Adjusts the balance (see page 16)  
• In stereo mode:  
Selects a standard display (see page 10)  
• Changes to the next/previous menu item  
• Changes the setting of a menu item  
Overview of the operating menu  
Main menu  
“Menu”  
“Easy Setup”  
Reset List  
Current List  
Scan New List  
Squelch  
Easy Setup  
Frequency Preset  
Name  
Balance  
Mode  
Extended menu  
“Advanced Menu”  
High Boost  
Auto Lock  
Advanced  
Exit  
Tune  
Pilot Tone  
Limiter  
LCD Contrast  
Reset  
Software Revision  
Exit  
Display  
Function of the menu item  
Page  
14  
Main menu “Menu”  
Squelch  
Adjusts the squelch threshold  
14  
Easy Setup  
Scans for unused frequency presets, releases  
and selects frequency presets  
15  
Frequency Preset Sets the frequency bank and the channel  
15  
15  
14  
14  
16  
Name  
Enters a freely selectable name  
Adjusts the balance  
Balance  
Mode  
Selects stereo or Focus mode  
Activates/deactivates the treble boost  
High Boost  
Auto Lock  
Advanced  
Exit  
Activates/deactivates the automatic lock mode 16  
Calls up the extended menu “Advanced Menu” 17  
Exits the operating menu and returns to the  
current standard display  
11  
 
     
Using the operating menu  
Display  
Function of the menu item  
Page  
15  
“Easy Setup“  
Reset List  
Releases all locked frequency presets  
Selects an unused frequency preset  
15  
Current List  
Scan New List  
15  
Scans for unused receiving frequencies  
(frequency preset scan)  
15  
Exit  
Exits “Easy Setup” and returns to the main  
menu  
Extended menu “Advanced Menu”  
17  
17  
Tune  
Sets the receiving frequencies for the  
frequency banks “U1” to “U6”  
Sets the frequency bank, the channel and the  
receiving frequency (frequency banks “U1”  
to “U6”)  
17  
Pilot Tone  
Limiter  
Activates/deactivates the pilot tone evaluation 18  
Adjusts the limiter  
18  
19  
LCD Contrast  
Reset  
Adjusts the contrast of the display panel  
Resets the settings made in the operating  
menu  
19  
19  
Software Revision Displays the current software revision  
Exit  
Exits the extended menu “Advanced Menu”  
and returns to the main menu  
Working with the operating menu  
If the lock mode is activated, you have to deactivate it In order to  
be able to work with the operating menu (see page 10).  
By way of example of the “Frequency Preset” menu, this section describes  
how to use the operating menu.  
Changing from a standard display to the operating menu  
SET  
̈ Press the SET button.  
The current standard display is replaced by the main menu.  
The last selected menu item is displayed.  
Selecting a menu item  
̈ Press the rocker button to change to the “Frequency Preset”  
menu item.  
The current setting of the selected menu item is displayed:  
Menu  
Frequency Preset  
B.Ch: 1. 1  
Changing and storing settings  
SET  
SET  
Frequency Preset  
B.Ch: 1. 1  
Frequency Preset  
Menu  
Frequency Preset  
B.Ch: 1. 1  
B.Ch:  
6. 3  
863.100MHz  
824.500MHz  
Call up “Frequency  
Preset”  
Select the frequency  
bank and confirm  
Select the channel;  
store the setting  
SET  
“Stored”  
SET  
̈ Press the SET button to call up the menu item.  
̈ Press the rocker button to set the frequency bank.  
12  
 
 
Using the operating menu  
SET  
SET  
̈ Press the SET button to confirm your selection.  
̈ Press the rocker button to set the channel.  
̈ Press the SET button to store the setting.  
Canceling an entry  
̈ Press the ESC button to cancel the entry.  
ESC  
The current standard display appears on the display panel.  
To subsequently return to the last edited menu item:  
SET  
̈ Press the SET button repeatedly until the last edited menu  
item appears.  
Exiting a menu item  
To return to the next higher menu level:  
̈ Change to the “Exit” menu item.  
Menu  
Exit  
SET  
̈ Confirm your selection.  
You return to the next higher menu level.  
To directly return to the current standard display:  
̈ Press the ESC button.  
ESC  
13  
 
Adjusting settings via the operating menu  
Adjusting settings via the operating  
menu  
The main menu “Menu”  
Adjusting the squelch threshold – “Squelch”  
SET  
Squelch  
Squelch  
Menu  
Squelch  
5 dB  
15 dB  
5dB  
Call up “Squelch”  
Select the  
desired setting  
Store the setting  
SET  
“Stored”  
Adjustment range: 5 to 25 dBμV, adjustable in 2-dB steps, can be switched  
off  
The squelch eliminates annoying noise when the transmitter is switched  
off or when there is no longer sufficient transmitter power received by the  
receiver.  
CAUTION!  
Danger of hearing damage!  
If you switch the squelch off or adjust the squelch  
threshold to a very low value, loud hissing noise can occur  
in the receiver. The hissing noise can be loud enough to  
cause hearing damage!  
̈ Always make sure that the squelch is switched on.  
̈ Before adjusting the squelch threshold, set the  
volume of the headphone output PHONES to the  
minimum (see page 9)  
.
̈ Never change the squelch threshold during a live  
transmission.  
̈ Adjust the squelch threshold – with the transmitter switched off – to  
the lowest possible setting that suppresses hissing noise.  
A high squelch threshold reduces the transmission range.  
The squelch should only be switched off for servicing purposes. With the  
squelch threshold set to “5 dB”, you switch the squelch off by keeping the  
DOWN rocker button pressed for 3 seconds.  
Display  
Squelch is ...  
... switched on.  
MHz  
823.925  
The dotted line displays the squelch  
threshold.  
ew300 IEM  
MUTE  
RF AF  
P
... switched off.  
MHz  
823.925  
The dotted line goes off and the audio  
level display “AF” shows full deflection  
(hissing noise).  
ew300 IEM  
RF AF  
P
If you have accidentally switched off the squelch:  
̈ Press the UP rocker button to switch the squelch on.  
14  
 
   
Adjusting settings via the operating menu  
Scanning for, releasing and selecting frequency presets –  
“Easy Setup”  
Menu item  
Function of the menu item  
Reset List  
Releases all locked frequency presets  
Current List Selects an unused frequency preset  
Scan New List Automatically scans for unused receiving frequencies  
(frequency preset scan)  
If receiving frequencies are used, they will be locked; if  
receiving frequencies are unused, they will be released.  
After the frequency preset scan, you can select an unused  
frequency preset.  
Selecting the frequency bank and the channel – “Frequency Preset”  
SET  
SET  
Frequency Preset  
B.Ch: 1. 1  
Frequency Preset  
Menu  
Frequency Preset  
B.Ch: 1. 1  
B.Ch:  
6. 3  
863.100MHz  
824.500MHz  
Call up “Frequency  
Preset”  
Select the frequency  
bank and confirm  
Select the channel;  
store the setting  
SET  
“Stored”  
When setting up multi-channel systems, please observe the  
following:  
Only the factory-preset receiving frequencies within one  
frequency bank (“1” to “20”) are intermodulation-free. It is vital  
to observe the notes on frequency selection on page 20.  
Overview of the frequency banks and channels:  
Frequency bank Channels  
Type  
1” to “20”  
up to 16 per  
System bank:  
frequency bank frequencies are factory-preset  
up to 16 per User bank:  
frequency bank frequencies are freely selectable  
U1” to “U6”  
Entering a name – “Name”  
Menu  
Name  
Name  
Lichael  
Name  
Michael  
Lichael  
Call up “Name”  
Enter a character  
and confirm  
Enter a character;  
store the setting  
“Stored”  
Via the “Name” menu item, you can enter a freely selectable name (e.g. the  
name of the performer) for the receiver. The name is displayed on the  
Frequency/Name” standard display (see page 10). The name can consist  
of up to 8 characters such as:  
• letters (without pronounciation marks),  
• numbers from 0 to 9,  
• special characters and spaces.  
To enter a name, proceed as follows:  
̈ Press the rocker button to select a character.  
SET  
̈ Press the SET button to change to the next segment/character  
or to store the complete entry.  
15  
 
       
Adjusting settings via the operating menu  
Adjusting the balance – “Balance”  
SET  
Balance  
Balance  
Menu  
Balance  
0
5
0
Call up “Balance”  
Select the desired  
setting  
Store the setting  
SET  
“Stored”  
You can adjust the balance in 31 steps. In Focus mode (see next section)  
and when one of the standard displays is shown, you can also use the  
rocker button to adjust the balance. The mode of operation of the balance  
setting depends on the selected audio mode (see next section).  
Switching between “Stereo” and “Focus” mode – “Mode”  
SET  
Mode  
Mode  
Menu  
Mode  
Stereo  
Focus  
Stereo  
Call up “Mode”  
Select the desired  
setting  
Store the setting  
SET  
“Stored”  
The selected audio mode influences the mode of operation of the balance  
setting (see previous section).  
Audio mode  
Stereo  
Focus  
The left-right signals are available The left-right signals are mixed and  
as usual.  
are available as a mono signal in  
both headphone channels.  
The balance setting serves to  
adjust the balance between the  
left and right stereo signal.  
The balance setting serves to  
adjust the relative levels of the  
two separate channels in the  
mixed mono signal.  
In both audio modes, the corresponding transmitter has to be set to  
stereo mode!  
Activating/deactivating the treble boost – “High Boost”  
Via the “High Boost” menu item, you can boost the treble response of the  
output signal (8 dB at 10 kHz).  
Output signal remains unchanged High Boost activated  
EQ  
EQ  
Activating/deactivating the automatic lock mode – “Auto Lock”  
SET  
Menu  
Auto Lock  
Active  
Auto Lock  
Inactive  
Auto Lock  
Active  
Store the setting  
Call up “Auto  
Lock”  
Select the desired  
setting  
SET  
“Stored”  
The lock mode prevents that the balance is accidentally adjusted when the  
receiver is in Focus mode. In addition, the lock mode prevents accidental  
switching off or programming during operation. The lock mode icon ቦ  
on the current standard display indicates that the lock mode is activated.  
For information on how to use the lock mode, refer to page 10.  
16  
 
     
Adjusting settings via the operating menu  
The extended menu “Advanced Menu”  
To get into the extended menu “Advanced Menu”:  
̈ From the main menu, select “Advanced”.  
Setting the receiving frequencies and the frequency banks “U1”  
to “U6 – “Tune”  
When you have selected one of the system banks and then select  
the “Tune” menu, the diversity receiver automatically switches to  
channel 1 of the frequency bank “U1”. In this case, “U1.1” briefly  
appears on the display panel.  
Upon delivery, the channels of the frequency banks “U1” to “U6”  
are not assigned a receiving frequency.  
Via the “Tune” menu item, you can set a receiving frequency to be stored  
in the current channel or you can select a different channel in one of the  
frequency banks “U1” to “U6” and assign this channel a receiving  
frequency.  
Setting a receiving frequency for the current channel  
̈ Press the rocker button until the “Tune” menu item appears.  
SET  
̈ Press the SET button.  
The MHz section of the receiving frequency of the channel is  
highlighted.  
SET  
SET  
Advanced Menu  
Tune  
Tune  
Tune  
823.925 MHz  
823.925 MHz  
823.925 MHz  
B.Ch: U1. 1  
B.Ch: U1. 1  
Call up “Tune”  
(special function)  
Select the frequency  
bank and confirm  
Select the channel;  
store the setting  
SET  
“Stored”  
It is vital to observe the notes on frequency selection on page 20.  
̈ Press the rocker button to set the MHz section of the  
frequency.  
SET  
SET  
̈ Press the SET button to confirm the MHz section of the  
frequency.  
The kHz section of the frequency is highlighted.  
̈ Press the rocker button to set the kHz section of the frequency.  
̈ Press the SET button to confirm the frequency.  
Stored” appears on the display panel. The “Tune” menu item  
appears again.  
Selecting a channel and assigning this channel a frequency  
̈ Press the rocker button until the “Tune” menu item appears.  
SET  
̈ Press the SET button and keep it pressed until the frequency  
bank is highlighted.  
SET  
SET  
Advanced Menu  
Tune  
Tune  
Tune  
823.925 MHz  
823.925 MHz  
823.925 MHz  
B.Ch: U1. 1  
B.Ch: U5. 1  
Call up “Tune”  
(special function)  
Select the frequency  
bank and confirm  
Select the channel;  
store the setting  
SET  
“Stored”  
17  
 
     
Adjusting settings via the operating menu  
̈ Press the rocker button to set the frequency bank.  
SET  
̈ Press the SET button to confirm the frequency bank.  
The channel is highlighted.  
̈ Press the rocker button to set the channel.  
SET  
̈ Press the SET button to confirm the channel.  
The frequency (MHz section) is highlighted.  
̈ Set the desired frequency (MHz and kHz section) as described in the  
previous chapter.  
Activating/deactivating the pilot tone evaluation – “Pilot Tone”  
Advanced Menu  
Pilot  
Pilot  
Pilot Tone  
A c t i v e  
A c t i v e  
I n a c t i v e  
Call up  
“Pilot Tone”  
Select the desired  
setting  
Store the setting  
“Stored”  
The pilot tone encodes the stereo signal of the transmitter and supports  
the diversity receiver’s squelch function, thus protecting against interfer-  
ence due to RF signals from other devices. When set to stereo operation,  
the transmitter adds an inaudible pilot tone to the transmitted stereo  
signal. The receiver detects and evaluates the pilot tone.  
̈ When the transmitter is set to mono operation, deactivate the pilot  
tone evaluation.  
Display  
Meaning  
No icon  
The pilot tone evaluation is deactivated.  
The pilot tone evaluation is activated. The receiver does  
not receive a pilot tone because the transmitter operates  
in mono mode.  
The pilot tone evaluation is activated. The receiver receives  
a pilot tone.  
Adjusting the limiter– “Limiter”  
Advanced Menu  
Limiter  
O ff  
Limiter  
– 6 d B  
Limiter  
O ff  
Call up “Limiter”  
Select the desired  
setting  
Store the setting  
“Stored”  
CAUTION!  
Danger of hearing damage due to a switched-off limiter!  
The limiter limits the volume at the headphone output  
PHONES and thus protects your hearing. With the limiter  
switched off, the receiver is capable of producing high  
sound pressure levels. Prolonged exposure to high sound  
pressure levels can cause permanent hearing defects.  
̈ Set the limiter to a low level before putting the  
earphones on.  
̈ Do not continuously expose yourself to high volumes.  
You can adjust the limiter in 6-dB steps from –18 dB to –6 dB or switch it  
off (OFF).  
18  
 
   
Adjusting settings via the operating menu  
Adjusting the contrast of the display panel – “LCD Contrast”  
Advanced Menu  
LCD Contrast  
7
LCD Contrast  
1 0  
LCD Contrast  
7
Call up  
“LCD Contrast”  
Select the desired  
setting  
Store the setting  
“Stored”  
You can adjust the contrast of the display panel in 16 steps.  
Resetting the settings made in the operating menu – “Reset”  
SET  
Advanced Menu  
Reset  
Reset  
Yes  
Call up “Reset”  
Select the desired  
setting; apply the  
setting  
SET  
“Stored”  
When resetting the settings made in the operating menu, only the  
selected settings for the pilot tone and for the frequency banks “U1” to  
U6” remain unchanged. For an overview of the factory-preset default  
settings, refer to the enclosed frequency information sheet.  
Displaying the software revision – “Software Revision”  
You can display the current software revision of the diversity receiver.  
19  
 
     
Synchronizing an SR 300 IEM G3 transmitter with the diversity receiver  
Synchronizing an SR 300 IEM G3  
transmitter with the diversity receiver  
When synchronizing the SR 300 IEM G3 transmitter with a diver-  
sity receiver, please observe the following:  
̈ Only use a transmitter and a diversity receiver from the same  
frequency range (see the type plates on the transmitter and  
the diversity receiver).  
̈ Make sure that the desired frequencies are listed in the  
enclosed frequency information sheet.  
You can also contact your Sennheiser partner who will be  
pleased to calculate intermodulation-free frequencies for you.  
̈ Make sure that the desired frequencies are approved and  
legal in your country and, if necessary, apply for an operating  
license.  
Synchronization allows you to quickly and easily transfer transmitter and  
receiver settings from one device to the other, especially if you want to set  
up a multi-channel system. There are two transfer directions:  
1. Easy Setup Sync: Transfer from the receiver to one or several trans-  
mitters  
Once you have performed a frequency preset scan with a receiver, you  
use the Easy Setup Sync function to transfer unused frequency presets  
from the receiver to the transmitters. In order to set up a multi-channel  
system, you use the diversity receiver to transfer the unused channels  
from the selected frequency bank one after the other to the transmit-  
ters, thus ensuring that all transmitters of a multi-channel system  
operate on intermodulation-free frequencies.  
2. Sync: Transfer from a transmitter to a receiver  
Once you have selected and set the desired receiver settings on the  
transmitter (either manually or using the Easy Setup Sync function),  
you transfer these settings to a receiver. This configures the receiver  
and establishes a transmission link between transmitter and receiver.  
When carrying out the Sync function, the transmitter’s current  
frequency bank and channel setting as well as the receiver parameters  
adjusted via the “Sync Settings” submenu are transferred to the  
EK 300 IEM G3 receiver via the infra-red interface.  
Setting the transmitters to intermodulation-free  
channels (Easy Setup Sync)  
Upon delivery, the SR 300 IEM G3 transmitter and the diversity receiver are  
synchronized with each other. If, however, you cannot establish a trans-  
mission link between transmitter and diversity receiver, you first have to  
use the diversity receiver to determine intermodulation-free channels and  
then transfer these channels to the transmitters. In doing so, no transmis-  
sion links are established.  
̈ On all transmitters, call up the “Easy Setup” menu item.  
Easy Setup Sync” appears on the display panels of the transmitters.  
The RF signals of the transmitters are deactivated. The transmitters  
await the transfer of a channel and a frequency bank via their infra-red  
interfaces.  
̈ With a diversity receiver, perform a frequency preset scan to scan the  
frequency banks for unused channels (“Scan New List”, see page 15).  
̈ Select a frequency bank with a sufficient number of unused channels  
and a channel on this receiver (“Current List”, see page 15).  
20  
 
   
Synchronizing an SR 300 IEM G3 transmitter with the diversity receiver  
̈ Start the Easy Setup Sync function by placing the infra-red interface of  
this diversity receiver in front of the infra-red interfaces ¿ of all trans-  
mitters, one after the other.  
¿
The diversity receiver transfers an unused channel from the selected  
frequency bank to the first transmitter and the next unused channel to  
the second transmitter and so on. As soon as a transfer is completed,  
the display panel of the transmitter displays the numbers of the trans-  
ferred frequency bank and channel.  
Synchronizing transmitters with diversity receivers  
(Sync)  
In a second step, you transfer the frequency bank and channel settings  
from the transmitters to other diversity receivers (synchronization) and  
thus establish the transmission links.  
If you want to carry out synchronization at a later time:  
̈ Press the jog dial on the transmitter.  
The frequency bank and the channel are stored. The transmitter’s  
RF signal is activated again. You can synchronize this transmitter with  
a diversity receiver at any time (see the instruction manual of the  
transmitter).  
To carry out synchronization immediately:  
̈ Start the Sync function by placing the infra-red interface of the first  
diversity receiver in front of the infra-red interface ¿ of the first trans-  
mitter while simultaneously pressing the SYNC button » on the trans-  
mitter.  
¿
»
The diversity receiver is set to the same frequency bank and channel as  
the transmitter. The transmitter’s RF signal is activated again. A trans-  
mission link is established between the first transmitter and the first  
diversity receiver.  
̈ Synchronize each of the remaining transmitters with one of the  
remaining diversity receivers.  
Your multi-channel monitoring system is now ready for operation.  
Instead of synchronizing, you can manually set the transmitters to the  
same frequency bank and channel that you set on the corresponding  
diversity receivers.  
Using freely selectable receiving frequencies  
You can also freely select the receiving frequencies and store these  
frequencies in the frequency banks “U1” to “U6”.  
It might be that the freely selected frequencies are not inter-  
modulation-free  
If you are using frequencies from the frequency banks “U1” to  
U6”, it might be that the receiving frequencies are not intermod-  
ulation-free.  
̈ Contact your Sennheiser partner who will be pleased to  
calculate intermodulation-free frequencies for you (see  
̈ Set each diversity receiver to the same frequency bank (“U1” to “U6”).  
21  
 
   
Cleaning the diversity receiver  
̈ On one of the receivers, select a channel within this frequency bank and  
assign this channel a receiving frequency (see page 17).  
̈ Synchronize a transmitter with this receiver (see the instruction  
manual of the transmitter).  
OR:  
̈ Manually set the transmitter to the same frequency bank and channel  
that you set on the receiver.  
̈ Repeat for the remaining transmitters and receivers as described  
above.  
Cleaning the diversity receiver  
CAUTION!  
Liquids can damage the electronics of the receiver!  
Liquids entering the housing of the device can cause a  
short-circuit and damage the electronics.  
̈ Keep all liquids away from the receiver.  
̈ Do not use any solvents or cleansing agents.  
̈ Use a cloth to clean the diversity receiver from time to time.  
Recommendations and tips  
... for the diversity receiver  
• Make sure that the antenna and the earphones cable do not cross.  
• For best results, make sure that the transmitter sensitivity is correctly  
adjusted.  
... for optimum reception  
• Transmission range depends to a large extent on location and can vary  
from about 10 m to about 150 m. There should be a “free line of sight”  
between transmitting and receiving antennas.  
• To avoid overloading the receiver, observe a minimum distance of 5 m  
between transmitting and receiving antennas.  
... for multi-channel operation  
• When operating a multi-channel system, you should only use the chan-  
nels within one frequency bank. Each of the frequency banks “1” to  
20” accommodates factory-preset frequencies which are intermodu-  
lation-free.  
• The frequency banks “U1” to “U6” allow you to freely select and store  
receiving frequencies (see page 17).  
• When using several transmitters simultaneously, interference can be  
avoided by maintaining a minimum distance of 20 cm between two  
transmitters.  
22  
 
   
If a problem occurs ...  
If a problem occurs ...  
Problem  
Possible cause  
Possible solution  
Diversity  
Lock mode is activated Deactivate the lock mode  
(see page 10).  
receiver cannot  
be operated,  
Locked”  
appears on the  
display panel  
No operation  
indication  
Batteries are flat or  
accupack is flat  
Replace the batteries or  
recharge the accupack  
(see page 7).  
No RF signal  
Transmitter and receiver Set the transmitter and  
are not on the same  
channel  
receiver to the same channel.  
Synchronize the transmitter  
with the receiver  
(see page 20).  
Transmission range is  
exceeded  
Check the squelch threshold  
setting (see page 14).  
Reduce the distance between  
transmitter and receiver.  
RF signal is deactivated Activate the RF signal  
(“RF Mute“)  
(see the instruction manual  
of the transmitter).  
RF signal avail- Transmitter is muted  
able, no audio  
signal, “MUTE”  
Cancel the muting  
(see the instruction manual  
of the transmitter).  
appears on the  
display panel  
Receiver’s squelch  
threshold is adjusted  
Reduce the squelch threshold  
setting (see page 14).  
too high  
SR 300 IEM transmitter Deactivate the pilot tone  
is set to mono operation evaluation (see page 18).  
and therefore doesn’t  
transmit a pilot tone  
SR 300 IEM transmitter Activate the pilot tone  
is set to stereo opera-  
tion and therefore  
evaluation (see page 18).  
transmits a pilot tone  
Audio signal has Transmitter sensitivity Adjust the transmitter  
a high level of  
background  
noise  
is adjusted too low  
sensitivity correctly  
(see the instruction manual  
of the transmitter).  
Audio signal is Transmitter sensitivity Adjust the transmitter  
distorted  
is adjusted too high  
sensitivity correctly  
(see the instruction manual  
of the transmitter).  
No access to a During scanning, an  
certain channel RF signal has been  
Set the transmitter operating  
on this channel to a different  
detected on this channel channel and redo the  
and the channel has  
been locked  
frequency preset scan  
(see page 15).  
During scanning, a  
transmitter of your  
system operating on  
this channel has not  
been switched off  
Switch the transmitter off  
and redo the frequency  
preset scan (see page 15).  
If a problem occurs that is not listed in the above table or if the problem  
cannot be solved with the proposed solutions, please contact your local  
Sennheiser partner for assistance.  
To find a Sennheiser partner in your country, search at  
www.sennheiser.com under “Service & Support”.  
23  
 
 
Accessories  
Accessories  
The following EK 300 IEM G3 accessories are available from your specialist  
dealer:  
Cat. No.  
009950  
009828  
500432  
Accessory  
BA 2015 accupack  
L 2015 charger  
IE 4 earphones  
Specifications  
RF characteristics  
Modulation  
wideband FM  
Frequency ranges  
516–558, 566–608, 626–668,  
734–776, 780–822, 823–865 MHz  
(A to E, G, see page 3)  
Receiving frequencies  
1,680 frequencies,  
tuneable in steps of 25 kHz  
20 frequency banks, each with up  
to 16 factory-preset channels  
6 frequency banks, each with up  
to 16 user programmable channels  
Switching bandwidth  
Nominal/peak deviation  
Receiver principle  
42 MHz  
±24 kHz/±48 kHz  
adaptive diversity  
Sensitivity  
(with HDX, peak deviation)  
< 4 μV, typ. 1.6 μV for 52 dBArms S/N  
Adjacent channel rejection  
typ. 65 dB  
Intermodulation attenuation typ. 70 dB  
Blocking  
Squelch  
80 dB  
Off, 5 to 25 dBμV,  
adjustable in steps of 2 dB  
Pilot tone squelch  
can be switched off  
Sennheiser HDX  
AF characteristics  
Compander system  
S/N ratio  
(1 mV, peak deviation)  
approx. 90 dB  
THD  
0.9%  
Output power at 2.4 V,  
5 % THD, nominal deviation 2 x 100 mW at 32 Ω  
High Boost  
Limiter  
+8 dB at 80 kHz  
–18 dB to –6 dB,  
adjustable in steps of 6 dB,  
can be switched off  
Overall device  
Temperature range  
Power supply  
–10°C to +55°C  
2
AA size batteries, 1.5 V  
or BA 2015 accupack  
Nominal voltage  
2.4 V  
Power consumption:  
• at nominal voltage  
approx. 140 mA  
• with switched-off receiver 25 μA  
24  
 
   
Manufacturer Declarations  
Operating time  
approx. 4 to 6 hrs  
(depending on volume level)  
approx. 82 x 64 x 24 mm  
approx. 125 g  
Dimensions  
Weight (incl. batteries)  
In compliance with  
Europe  
EMC:  
EN 301489-1/-9  
Radio: EN 300422-1/-2  
Safety: EN 60065  
USA  
47 CFR 15 subpart B  
Approved by  
Canada  
Industry Canada RSS 123  
IC 2099A-G3SREK300  
limited to 806 MHz  
Connector assignment  
3.5 mm jack plug  
L
R
Manufacturer Declarations  
Warranty  
Sennheiser electronic GmbH & Co. KG gives a warranty of 24 months on this  
product.  
For the current warranty conditions, please visit our web site at  
In compliance with the following requirements  
• RoHS Directive (2002/95/EC)  
• WEEE Directive (2002/96/EC)  
Please dispose of the diversity receiver at the end of its  
operational lifetime by taking it to your local collection point or  
recycling center for such equipment.  
• Battery Directive (2006/66/EC)  
The supplied batteries or rechargeable batteries can be recycled.  
Please dispose of them as special waste or return them to your  
specialist dealer. In order to protect the environment, only  
dispose of exhausted batteries.  
CE Declaration of Conformity  
0682  
• R&TTE Directive (1999/5/EC)  
Before putting the device into operation, please observe the respective  
country-specific regulations.  
25  
 
   
Manufacturer Declarations  
Statements regarding FCC and Industry Canada  
This device complies with Part 15 of the FCC Rules and with RSS-210 of  
Industry Canada. Operation is subject to the following two conditions: (1)  
this device may not cause harmful interference, and (2) this device must  
accept any interference received, including interference that may cause  
undesired operation.  
This equipment has been tested and found to comply with the limits for a  
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are  
designed to provide reasonable protection against harmful interference in  
a residential installation. This equipment generates, uses and can radiate  
radio frequency energy and, if not installed and used in accordance with  
the instructions, may cause harmful interference to radio communications.  
However, there is no guarantee that interference will not occur in a partic-  
ular installation. If this equipment does cause harmful interference to  
radio or television reception, which can be determined by turning the  
equipment off and on, the user is encouraged to try to correct the inter-  
ference by one or more of the following measures:  
• Reorient or relocate the receiving antenna.  
• Increase the separation between the equipment and receiver.  
• Connect the equipment into an outlet on a circuit different from that to  
which the receiver is connected.  
• Consult the dealer or an experienced radio/TV technician for help.  
This class B digital device complies with the Canadian ICES-003.  
Changes or modifications made to this equipment not expressly approved  
by Sennheiser electronic Corp. may void the FCC authorization to operate  
this equipment.  
Before putting the device into operation, please observe the respective  
country-specific regulations!  
26  
 
Index  
Index  
Accessories 24  
Lock mode  
activating/deactivating (Auto  
Lock) 16  
Accupack  
charging  
inserting  
7
7
lock mode icon  
6
Advanced Menu (extended menu)  
overview 12  
Locked 10  
settings 17  
LOW BATT  
5
M
Auto Lock (activating/deactivating  
the lock mode) 16  
Menu (main menu)  
overview 11  
settings 14  
B
Balance (adjusting the  
balance) 16  
and Focus mode) 16  
Batteries  
N
battery status  
inserting  
Buttons  
ESC button  
function of the ~ 11  
SET button  
UP/DOWN button  
6
7
Name (entering a name) 15  
O
5
Operating menu  
overview 11  
settings 14  
using 12  
P
5
5
C
Channel  
Pilot Tone (activating/deactivating  
assigning a frequency 17  
selecting 15  
setting a frequency 17  
the pilot tone  
evaluation) 18  
R
D
Receiver  
Displays  
adjusting the contrast of the dis-  
play panel (LCD Contrast) 19  
AF (audio level)  
LOW BATT  
MUTE  
overview  
RF (RF level)  
standard displays 10  
adjusting the volume  
cleaning 22  
9
switching off  
switching on  
9
9
6
6
Reset (resetting the settings made  
6
6
RF signal indication  
6
S
Software Revision (displaying the  
E
software revision) 19  
Earphones, connecting  
7
Squelch (adjusting the  
Easy Setup (scanning for, releasing  
squelch) 14  
and selecting frequency  
presets) 15  
T
Transmitter (synchronizing with  
F
receiver) 20  
Frequency bank  
selecting 15  
Troubleshooting 23  
Tune (setting the receiving  
frequencies and frequency  
banks) 17  
setting a frequency 17  
~ system  
3
Frequency Preset (selecting a  
frequency bank/  
channel) 15  
Frequency presets  
releasing (Reset List) 15  
searching for unused ~ (Scan New  
List) 15  
selecting (Current List) 15  
H
High Boost (activating/  
deactivating the treble  
boost) 16  
L
LCD Contrast (adjusting the  
contrast of the display  
panel) 19  
Limiter (adjusting the limiter) 18  
27  
 
 
Sennheiser electronic GmbH & Co. KG  
Am Labor 1, 30900 Wedemark, Germany  
Printed in Germany  
Publ. 01/09  
529681/A01  
 

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