4 beltpack (hbp-2x), 1 connectors, 2 microphone pre-amplifier – Clear-Com HLI-FBS User Manual
Page 125: Beltpack (hbp-2x), Connectors, Microphone pre-amplifier
10.4 Beltpack (HBP-2X)
10.4.1 Connectors
Specification
Description / value
Intercom line
(2) 3-pin XLR–M-F
Headset
4-pin XLR–M and 2.5mm TRS jack
USB
Micro-AB
Table 60: Beltpack: Connectors
10.4.2 Microphone pre-amplifier
Specification
Description / value
Headset Mic impedance:
200
Ω (Dynamic)
Headset Mic Voltage
1.7V (Electret selectable)
Limiter
+23 dB
The following specified for a route to 4-wire output @ 0dBu out:
Mic gain
60dB (dynamic) 45dB (electret)
Frequency response
300 Hz – 10 kHz + / -3dB (contoured for intelligibility)
Distortion
<0.2% THD @ 1 kHz
Noise-
<-55dBu dynamic, <-65dBu electret
Table 61: Beltpack: Microphone pre-amplifier
123
HelixNet Partyline User Guide