Sonifex HY-03

The Sonifex HY-03 analogue 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 features of the HY-03 include :

• Fully automatic – adapts to varying line conditions and has automatic signal limiting.
• Local and remote line hold switching – calls can be remotely switched through a mixing console.
• Momentary or permanent latching remotes can be enabled.
• Balanced mic/line input – 10k ohm balanced input selectable for 0dBu clean feed line, or microphone level with adjustable gain.
• Balanced output – 0dBu low impedance balanced output, with output gain adjustment.
• Mixed output – the output can be a mix of the caller and mic/line input signals for recording both sides of the telephone conversation.
• Integrated ring detector – automatic call answering after a pre-determined number of rings.
• Fitted with K-break disconnect detection as standard, with an option for dial-tone disconnect using the optional HY-03DTD board. The HY-03DTD board can be configured to disconnect on recognizing the dial tone used in a specific country.
• Line limiter, bandpass filter and output noise gate with preset threshold providing low distortion crystal clear audio.
• 28dB typical line balance rejection.
• Built in power supply with switchable 115V, or 230V, mains input.
• BABT approval compliant with European PTT specifications.

Which Format Is Most Suitable?

The HY-03 analogue hybrids are available in three models :

• HY-03 Single freestanding automatic analogue TBU.
• HY-03S Single 19” rack mounted automatic analogue TBU with ringing detector.
• HY-03T Twin 19” rack mounted automatic analogue TBU.

Specification Sonifex HY-03
Audio Specification
Input Impedance – Line Mode (Clean Feed):				10 kΩ balanced 0dB
Input Impedance – Microphone Mode:				2 kΩ 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 600 Ω
Telephone Line Impedance Range:				300 Ω to 1500 Ω
Output Impedance:				50 Ω 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.
Connections
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.
Order Code			Description	Height	Width	Depth*	Total Nett Weight	Total Gross Weight
HY-03			Automatic analogue TBU, freestanding	4.5 cm 1.8”	21.8 cm 8.6”	17.5 cm 7”	1.25 kg 2.75lbs	2.0 kg 4.4lbs
			HY-03 boxed	6 cm 2.4”	34 cm 13.4”	27 cm 10.6”
*Depth is measured from the front to the end of the connectors fitted to the back of the unit. Note: If you are ordering the HY-03 for use in the USA, add the word “US” after the product code. If you are using the HY-03 with the Broadcast Bionics PhoneBox system, then add the word ”BB” after the product code. The HY-03 uses different circuitry for these systems.
Accessories
Order Code				Description
HY-03DTD				Dial tone detect add-on board
HY-03CON				Front panel conversion kit, HY-03S 19” (48 cm) rack-mount front to HY-03 freestanding
HY-03SCON				Front panel conversion kit, HY-03 freestanding to HY-03S 19” (48 cm) rack-mount front
HY-03TCON				Front panel conversion kit, HY-03 or HY-03S, to HY-03T 19” (49 cm) rack-mount front
HY-02EC				Eurocard version of HY-02 analogue TBU (non RoHS)