Sennheiser Headphones HD 25SP User Guide

HD 25 SP  
Headphones | DJ & Studio Headphones  
Cat. No. 003759  
General Description  
The HD 25 SP are closed dynamic headphones for monitoring, recording  
and outdoor applications. They are a lower-cost alternative to the HD 25,  
featuring a simpler headband and a slightly different capsule design.  
Technical Data  
Frequency response ..................... 30 – 16,000 Hz (3 dB/1 kHz)  
Transducer principle................................................ dynamic, closed  
Nominal impedance ....................................................................85  
Characteristic SPL .....................................112 dB (at 1 khz, 1 Vrms  
)
Load rating.................................................................................. 0.2 W  
THD............................................................................................ < 0.4 %  
Ear coupling ......................................................................supra-aural  
Contact pressure.............................................................. approx. 3 N  
Weight (without cable)............................................................ 115 g  
Connector........................................... 1/4” (6.3 mm) Ø stereo jack  
Connection cable.......... 3 m, detachable, dual-sided steel cable  
Diffuse Field Frequency Response  
Features  
Very lightweight, comfortable even if used for long periods  
Effective attenuation of background noise  
High maximum sound pressure level  
85 nominal impedance ensures universal compatibility  
Tough, detachable stranded steel cable  
Neodymium ferrous magnet systems and lightweight  
aluminium/copper voice coils for fast transient response  
Profile  
Closed dynamic headphones for monitoring in noisy environ-  
ments, high sensitivity, sound pressure level 100dB. Frequen-  
cy response 30 Hz to 16 kHz, THD < 0.4 %, nominal impedance  
85 , load rating 0.2 W. 3 m steel cable with 1/4” (6.3 mm)  
stereo jack plug.  
Recommended Accessories  
HZR 62 stereo volume control (for HD 25 SP-1 only)  
Cat. No. 005248  
Replacement Parts  
Ear pads (1 pair)  
Velour ear pads (optional) (1 pair)  
Cat. No. 075525  
Cat. No. 069417  
Product Variants  
HD 25 SP-1: as HD 25 SP, but with 3.5 mm /  
1/4” stereo jack and 65 nominal impedance  
30-16,000 Hz  
85  
< 0.4 %  
115 g  
Cat. No. 004173  
6.3 mm  
steel  
3 m  
 

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