HelixNet | User Guide
20 System Specifications
20.1 Main Station (HMS-4X)
Connectors
Specification Description / value
2 x Intercom Powerline Outputs Four 3-pin XLR. Two male and two female.
Headset 4-pin XLR–M
USB USB Type A and Micro-AB
Program 3-pin XLR–F
SA (Stage Announce) 3-pin XLR–M
Hot Mic / IFB Interface 1/4 in. (0.64 cm) phone jack
GPIO 25-way D-type female
20.1.1 Headphone Amplifier
Specification Description / value
Load impedance 32Ω
Output level +12dBu before clipping
Sidetone -12dB (selectable)
The following specified for a route from a 4-wire input @ 0dBu in
Max gain 0dB
Frequency response 40Hz - 10kHz ± 3dB
Distortion <0.1% THD @ 1kHz
Noise <-65dBu
Headphone limiter 0dBu (selectable)
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