Sennheiser HD HD 25SP, HD 25 SP Specification Sheet

Cat. No. 003759

HD 25 SP

Headphones | DJ & Studio Headphones

General Description

The HD 25 SP are closed dynamic headphones for monitoring, recording
and outdoor applications. They are a lower-cost al ternative to the HD 25,
featuring a simpler headband and a slightly different capsule design.

Features

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Very lightweight, comfortable even if used for long periods

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Effective attenuation of background noise

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High maximum sound pressure level

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85 Ω nominal impedance ensures universal compatibility

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Tough, detachable stranded steel cable

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Neodymium ferrous magnet systems and lightweight
aluminium/copper voice coils for fast transient response

Recommended Accessories

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HZR 62 stereo volume control (for HD 25 SP-1 only) Cat. No. 005248

Replacement Parts

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Ear pads (1 pair) Cat. No. 075525

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Velour ear pads (optional) (1 pair) Cat. No. 069417

Product Variants

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HD 25 SP-1: as HD 25 SP, but with 3.5 mm /

1/4” stereo jack and 65 Ω nominal impedance Cat. No. 004173

Technical Data

Frequency response .....................30 – 16,000 Hz (– 3 dB/1 kHz)

Transducer principle................................................ dynamic, closed

Nominal impedance ....................................................................85 Ω

Characteristic SPL .....................................112 dB (at 1 khz, 1 V

rms

)

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

30-16,000 Hz 85 Ω < 0.4 % 115 g

6.3 mm steel 3 m

Diffuse Field Frequency Response

Profile

Closed dynamic headphones for monitoring in noisy environ­ments, high sensitivity, sound pressure level 100 dB. Frequen­cy response 30 Hz to 16 kHz, THD < 0.4 %, nominal impedance
85 Ω, load rating 0.2 W. 3 m steel cable with 1/4” (6.3 mm)
stereo jack plug.