HD 25 Dynamic Headphone
The closed-back HD 25s are purpose-designed, professional monitoring headphones offering high attenuation of background noise. Capable of handling very high sound pressure levels and of extremely robust construction, these headphones perform exceptionally well in high-noise environments, e.g. ENG, sound reinforcement, studio monitoring and audio equipment testing. The capsule is rotatable for one-ear listening. Ideal monitoring headphones for cameramen and DJs.

FeaturesBenefits

High sensitivity due to lightweight aluminum voice coils Very good attenuation of background noise Low weight Adjustable split headband for exceptional comfort Replaceable, single-sided steel connection cable Great sound Great for mixing in noisy environments Virtually a custom fit Easily field-servicable

Technical Data

Frequency response Transducer principle Nominal impedance Characteristic SPL at 1 kHz 1 Load rating THD Ear coupling Contact pressure Weight (without cable) Connector Connection cable 1622,000 Hz -3 dB dynamic, closed dB 200 mW < 0.3 % supraural approx. 3 N approx. 4.93 oz 1/8" stereo mini jack plug with adapter to 1/4" stereo jack plug 1.5 m, single-sided steel cable

Optional Accessories

Stereo volume control HZR 6

continued

Supplied Accessories

1 cable clip

Stereo volume control Replacement Parts Ear pads (1 pair) Velour ear pads (optional) (1 pair) Connection cable HZR 6

Product Compatibility

For monitoring, recording and outdoor applications
Architects Specifications
The headphone shall be a closed dynamic professional headphone for use in noisy environments, with high sensitivity and a sound pressure level of 120 dB and shall have the following: Adjustable headband and earpieces for professional monitoring applications. Frequency response 16 Hz22 kHz, total harmonic distortion < 0.3 %, nominal impedance 70 , load rating 0.2 W. 1.5 m steel cable with 1/8" right-angled stereo jack plug with adapter to 1/4" jack plug. The headphone shall be a Sennheiser HD 25.
Sennheiser Electronic Corporation, 1 Enterprise Drive, Old Lyme, CT 06371 Telephone: 860-434-9190 Fax: 860-434-1759 Web: http://www.sennheiserusa.com
Sennheiser Mexico: Av. Xola 613, PH6, Col. Del Valle 03100, Mexico, DF. Telephone: (525) 639-0956. Fax: (525) 639-9482 Sennheiser Canada: 221 Labrosse Ave, Pte-Claire, PQ H9R 1A3. Telephone: 514-426-3013. Fax: 514-426-3953 Manufacturing Plant: Am Labor 1, 30900 Wedemark, Germany

HD 25 SP

HD 25 SP Dynamic Headphone
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.

FeaturesBenefits

Very lightweight Effective attenuation of background noise minimizes risk of feedback High maximum sound pressure level 85 nominal impedance Tough, detachable stranded steel cable Neodymium ferrous magnet systems and lightweight copper-coated aluminium voice coils for fast transient response Extremely comfortable for extended listening Great for mixing in noisy environments Superior gain in any environment Ensures universal compatibility Easily field-servicable Accurate sound reproduction

Technical Data

Frequency response Transducer principle Nominal impedance Characteristic SPL at 1 kHz Load rating THD Ear coupling Contact pressure Weight (without cable) Connector Connection cable 3016,000 Hz -3 dB dynamic, closed dB 2 dB 200 mW < 0.4 % supraural approx. 3 N 4.05 oz 1/8" stereo mini jack plug with adapter to 1/4" stereo jack plug 3 m, detachable dual-sided steel cable

Supplied Accessories

1 cable clip

Optional Accessories

Stereo volume control Replacement Parts Ear pads (1 pair) Velour ear pads (optional) (1 pair) Connection cable HZR 6 (HD 25 SP-1 only)

Product Compatibility

For monitoring, recording and outdoor applications
Architects Specifications
The headphone shall be a closed dynamic headphone for monitoring in noisy environments with the following: high sensitivity, sound pressure level 100 dB. Frequency response 30 Hz16 kHz, THD < 0.4 %, nominal impedance 85 , load rating 0.2 W. 3 m steel cable with 1/4" stereo jack plug. The headphone shall be a Sennheiser HD25 SP.
Sennheiser Electronic Corporation, 1 Enterprise Drive, Old Lyme, CT 06371 Telephone: 860-434-9190 Fax: 860-434-1759 Web: http://www.sennheiserusa.com
Sennheiser Mexico: Av. Xola 613, PH6, Col. Del Valle 03100, Mexico, DF. Telephone: (525) 639-0956. Fax: (525) 639-9482 Sennheiser Canada: 221 Labrosse Ave, Pte-Claire, PQ H9R 1A3. Telephone: 514-426-3013. Fax: 514-426-3953 Manufacturing Plant: Am Labor 1, 30900 Wedemark, Germany