The Sonifex HY-03 is a free-standing automatic analogue TBU. Telephone hybrids, or telephone balance units (TBUs) provide the interface between professional audio equipment and the public telephone network.
The Sonifex HY-03 is a free-standing automatic analogue TBU. Telephone hybrids, or telephone balance units (TBUs) provide the interface between professional audio equipment and the public telephone network. They provide protection for your equipment and the public telephone lines, allowing for varying line signals and line conditions. Automatically cancelling out the unwanted signal they also facilitate two-way communication down a single telephone line.
The analogue Sonifex HY-03 telephone hybrid is the replacement for the HY-02, which for many years has set the standard as an excellent value, high quality telephone hybrid.
The HY-03 retains many of the features of the HY-02 and adds some additional ones.
Some of the features of the HY-03 include :
Sonifex HY-03 Specifications
Input Impedance - Line Mode (Clean Feed): 10kΩ balanced 0dB
Input Impedance - Microphone Mode: 200Ω balanced
Clean Feed Limiting Input: +4dBu
Microphone Level Range: From 74dB to 40dB adjusted by preset pot
Bandwidth to Telephone Line: 250Hz - 4kHz, -3dB ref 1kHz
Telephone Line Impedance: Nominally 600Ω
Telephone Line Impedance Range: 300Ω to 1500Ω
Output Impedance: 50Ω balanced floating 0dBu
Output Level Range: +8dB to -14dB adjusted by preset pot
Rejection Ratio: 45dB on 1kHz tone, typically 28dB on complex waveforms, reference peak level of 0dB
Ring Detector Sensitivity: 1 ring to 6 rings
Power: 230V 50Hz, or 115V 60Hz. 6W for HY-03.
Mic/Line Input: XLR 3 pin female with push button mic/line selection
Line Output: XLR 3 pin male
Telephone Line: RJ11 6/4 socket
Telephone Handset/Instrument: RJ11 6/4 socket
Remotes: 9-way D-type socket
Power: IEC mains (CEE22)
Each unit is supplied with 1 x RJ11 to RJ11 telephone line lead, 1 x RJ11 to BT plug telephone line lead, 1 x BT handset socket to RJ11 plug adapter, IEC mains lead fitted with moulded mains plug, handbook and warranty card.