Sennheiser HMD 27 Datasheet
PRODUCT SPECIFICATION
HME 27 | HMD 27 | HMDC 27
Professional broadcasting headset series
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The new HME / HMD / HMDC 27 series invites the Broadcast Commentators and Audio Engineers to experience the
highest level of wearing comfort. The headsets have a closed and circumaural earcup design to provide a high passive
attenuation but nevertheless unusually lightweight and comfortable over long working hours. Soft circumaural earpads
ensure a comfortable fit.
The headsets are similar to the HMS 26 series equipped with the automatically opening two-piece headband, hence no
pressure on the sensitive fontanelle. For those users who still prefer a conventional headband, a wide headband padding
is included that converts the two-piece headband into a compact single piece.
TM
The top-of-the-line model is the HMDC 27, which features NoiseGard
loud environments. By actively reducing the noise level by additional 15dB this headset increases intelligibility while at
the same time protecting the user’s hearing and avoiding stress and fatigue due to noise. NoiseGardTM does not require
the usual batteries but is conveniently powered via the microphone power supply from the broadcast desk or intercom
system. (Phantom powered P48).
FEATURES
• Highest wearing comfort due to the lightweight circumaural design and the splitted headband (no pressure
on the sensitive fontanelle)
• Accurate and linear sound reproduction for very demanding monitoring
• HMD 27/HMDC 27: dynamic Microphone, which stands
out due to a strong and powerful sound pattern for an
audio transmission in highest broadcast quality even in
noisy environments
• HME 27: pre-polarized condenser microphone with
cardioid directivity for a precise audio reproduction and
higher intelligibility in highest broadcast quality even in
noisy environments
• ActiveGard© (on/off switch) for protected hearing
against noise peaks > 110 dB
• Modular concept of different cables and boom arms to
offer highest flexibility
• cable of the cable 26-II series are compatible
• Swiveling ear cap for single sided listening
• Microphone can be worn either on right or left hand
side
• wide headband padding is included that converts the
two-piece headband into a compact single piece
DELIVERY INCLUDES
• HME 27/HMD 27 without a cable or
• large headband padding
• cable clip
• windshield
• quick guide
• safety guide
PRODUCT VARIANTS
(active noise reduction) to perform well in very
HMDC 27 including the II-X3K1 cable
HME 27 Art. no. 506899
HMD 27 Art. no. 506902
HMDC 27 Art. no. 506978
PRODUCT SPECIFICATION
HME 27 | HMD 27 | HMDC 27
Professional broadcasting headset series
SPECIFICATIONS
Headphones: HME 27 HMD 27 HMDC 27
Transducer principle dynamic, closed dynamic, closed dynamic, closed
Ear coupling circumaural circumaural circumaural
Frequency response 8 Hz to 18 kHz 8 Hz to 18 kHz 8 Hz to 18 kHz
Impedance 64 Ω 64 Ω 600 Ω (ANR switched on)
200 Ω (ANR switched off)
Load capacity 500 mW 500 mW 500 mW
Sensitivity 112 dB SPL/1 V rms/1 kHz
(ActiveGard™ switched off)
Maximum SPL ActiveGard™ switched off:
128 dB SPL @ 1 kHz
ActiveGard™ switched on:
110 dB SPL @ 1 kHz
Ambient noise reduction Max. 32 dB Max. 32 dB Max. 32 dB (passive,
Total harmonic distortion
(THD)
Supply voltage - - Phantom powering P12–P48,
Contact pressure approx. 3.3 N approx. 3.3 N approx. 3.3 N
Ambient temperature Operation: -15° C to +55° C
Weight without cable approx. 240 g approx. 240 g approx. 240 g
Microphones:
Transducer principle pre-polarized condenser
Pick-up pattern Cardioid Hyper-cardioid Hyper-cardioid
Frequency response 40 Hz to 20 kHz 40 Hz to 18 kHz 40 Hz to 18 kHz
Sensitivity 16 mV/Pa @ 1 kHz 0.5 mV/Pa @ 1 kHz 0.5 mV/Pa @ 1 kHz
Impedance - 300 ohms 300 ohms
Maximum SPL 150 dB SPL, 1 kHz, 0.5%
Connection type Phantom powering P48 - Power supply 12 V to 48 V - -
< 0.1% @ 1 kHz, 100 dB SPL < 0.1% @ 1 kHz, 100 dB SPL < 0.1% @ 1 kHz, 100 dB SPL
Storage: -55° C to +70° C
BKE 10-4
microphone
THD
112 dB SPL/1 V rms/1 kHz
(ActiveGard™ switched off)
ActiveGard™ switched off:
128 dB SPL @ 1 kHz
ActiveGard™ switched on:
110 dB SPL @ 1 kHz
Operation: -15° C to +55° C
Storage: -55° C to +70° C
BMD 434
dynamic dynamic
- -
112 dB SPL/1 V rms/1 kHz
(ANR switched on,
ActiveGard™ switched off)
107 dB SPL/1 V rms/1 kHz
(ANR switched off,
ActiveGard™ switched on/
off)
115 dB SPL @ 1 kHz
(ActiveGard™ switched off,
ANR switched on)
128 dB SPL @ 1 kHz
(ActiveGard™ switched off,
ANR switched off)
110 dB SPL @ 1 kHz
(ActiveGard™ switched on,
ANR switched on/off)
ANR switched off)
Additional max. 15 dB (ANR
switched on)
12 V to 48 V, ≤ 10 mA
Operation: -15° C to +55° C
Storage: -55° C to +70° C
BMD 434
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Sennheiser electronic GmbH & Co. KG · Am Labor 1 · 30900 Wedemark · Germany · www.sennheiser.com
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