The CM-BH4WX is a portable, battery powered 4 wire communication unit for use in a multitude of TV and radio broadcasting applications. This unit has 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 CM-BH4WX uses audio transformers at its input and output, providing galvanic isolation from outside interference, ensuring your communications are loud and clear, every time.
Product Features
Transformer balanced inputs & outputs.
4-wire and IFB modes.
Low battery warning indicator.
150 hours from a single 9V PP3 battery.
Typical Applications
Used in TV studio floors, sports grounds and arenas by presenters and cameramen to produce content and to hear talkback.
Product Category
Belt Packs
Technical Specifications
Mic In to Line Out
Mic Input Impedance: 1k5Ω Unbalanced for 200Ω dynamic microphone
Limiter Input Threshold: -60dBu
Line Output Level: +2dBu
Line Output Impedance: 150Ω Transformer balanced
Line In to Headphone Out
Line Input Impedance: >10kΩ Transformer balanced
Input Gain/Volume: Adjustable off to +10dB
Maximum Input Level: +24dBu
Maximum HP Output Level: +7dBu (ref 9V battery voltage, <1% THD, 100Ω load)
Minimum HP Impedance: 100Ω
Connections
Line Input: 1 x XLR 3 pin female socket (balanced)
Line Output: 1 x XLR 3 pin male plug (balanced)
Headset (CM-BH4WX): 1 x XLR 4 pin male plug (balanced)
