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Sonifex CM-BH4WX Belt-Pack 4-Wire Headphone Amp with 4-Pin XLR Headset Socket
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Sonifex CM-BH4WX Belt-Pack 4-Wire Headphone Amplifier with 4-Pin XLR Headset Socket

SKU: SOCMBH4WX
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Reviews about this item

Review Summary

2017-09-20T18:46:25

Rated 5 out of 5

Fantastic! Used as a 4 wire connection to an intercom matrix!

Product worked without any issues. Battery lasted for at least 8 hours. (That's as long as I was using it.) Connected the unit to a 4 wire matrix intercom system to bypass the need for a 2 wire com converter. Worked with the 4 wire intercom headsets from the clear-com belt pack I was eliminating. Also worked well as a testing tool to send audio through the mixer and to listen to mic/line XLR connection.

Kevin D.

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Sonifex CM-BH4WX Specifications

  • Mic Input Impedance

    1k5Ohms Unbalanced for 200Ohms dynamic microphone

  • Limiter Input Threshold

    -60dBu

  • Line Output Level

    +2dBu

  • Line Output Impedance

    150Ohms Transformer balanced

  • Line Input Impedance

    >10kOhms Transformer balanced

  • Input Gain/Volume

    Adjustable off to +10dB

  • Maximum Input Level

    +24dBu

  • Maximum HP Output Level

    +7dBu (ref 9V battery voltage, <1% THD, 100Ohms load)

  • Minimum HP Impedance

    100Ohms

  • Connections: Line Input

    1x XLR 3 pin female socket (balanced)

  • Connections: Line Output

    1x XLR 3 pin male plug (balanced)

  • Connections: Headset

    1x XLR 4 pin male plug (balanced)

  • Equipment Type

    Belt-pack 4-wire headphone amplifier with 4 pin XLR headset connector

  • Dimensions (W x D x H)

    4.92 x 2.64 x 1.89" / 12.5 x 6.7 x 4.8cm

  • Weight

    0.66lbs / 0.3kg

  • UPC Code

    192223054646

About Sonifex CM-BH4WX

FEATURED REVIEWS

Fantastic! Used as a 4 wire connection to an intercom matrix!

By Kevin D.

Product worked without any issues. Battery lasted for at least 8 hours. (That's as long as I was using it.) Connected the unit to a 4 wire matrix intercom system to bypass the need for a 2 wire com converter. Worked with the 4 wire intercom headsets from the clear-com belt pack I was eliminating. Also worked well as a testing tool to send audio through the mixer and to listen to mic/line XLR connection.

This is a version of the CM-BH4W with a 4 pin XLR headset connection instead of a stereo jack connector. In all other respects it is the same as the CM-BH4W.

The XLR connections are:
• Pin 1: Microphone non-phase (-)
• Pin 2: Microphone phase (+)
• Pin 3: Headphone non-phase (-)
• Pin 4: Headphone phase (+)

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What's in the box:

  • Sonifex CM-BH4WX Belt-Pack 4-Wire Headphone Amplifier with 4-Pin XLR Headset Socket
  • Sonifex 2 Year Warranty (1 Year + 1 Year with Registration)