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PRO5/DD, PRO7/DD & PRO11/DD Amplifiers

A new range of compact free-standing, constant current, phase-shifting hearing loop amplifiers, from SigNET.

Clear & intuitive graphical interface allows simple set-up of input levels, output current, phantom power and metal compensation
200m2, 500m2 or 1000m2 coverage (model dependent)
2 x XLR mic/line inputs (selectable)
Digital optical 'Toslink' connector facilitates easy connection to TVs, soundbars, etc
Outreach connector allows up to 10 of our revolutionary audio input utility plates to be added
Anti-tamper lock function prevents unauthorised adjustment of system settings
5 year warranty as standard
Class D output stage for maximum efficiency and very high output
Superior analogue audio processing with a powerful CPU and cutting-edge technology provide life-like speech and frst class music reproduction
Short circuit protection against loop faults for increased reliability
Fault relay & graphical display provide clear indication of operation and fault status
Industry leading dual action automatic gain control compensates for poor microphone technique
Line level output for recording or daisy-chaining multiple units to cover larger areas.
Designed and manufactured in the UK

PRO/D RANGE PHASE-SHIFTING HEARING LOOP AMPLIFIERS

PRO5/DD: 200m² Free-Standing, Phase-Shifting Hearing Loop Amplifer - 2 x 3.25 Amp
PRO7/DD: 500m² Free-Standing, Phase-Shifting Hearing Loop Amplifer - 2 x 5 Amp
PRO11/DD: 1000m² Free-Standing, Phase-Shifting Hearing Loop Amplifer - 2 x 7.5 Amp

Power

Supply Voltage:: 230V 50Hz with IEC 320 fused mains lead.
Power Consumption:: 100W / 200W / 400W (model dependent)

Inputs

Line In:: Input impedance: 1k + or – input to ground. Sensitivity: -20dBU typical.
Microphone:: Input impedance: 1k + or – input to ground. Sensitivity: -42dBU typical.
Phantom power for electret microphones: 12V selectable (on/off)
Outreach:: Input impedance: >10k. Sensitivity: 0dBU typical.
Outreach power: 24V d.c. nom. available via outreach connector (100mA max.)
Optical:: TOS Link digital receiver. Up to 24 bit, 96kHz sampling.

Outputs

Loop 1 & Loop 2: Type: True current mode. Loop output voltage: 14V. Dual Loop drive current @ 1 ohm: 2 x 3.25A
(PRO5/DD); 2 x 5A (PRO7/DD); 2 x 7.5A (PRO11/DD).
Line Out:: 775mV output
Fault Relay:: Single pole double throw (SPDT): NC, Common, NO.)
Phase Shift:: 2 x 900 phase shifted. Selectable (on/off).
Metal Compensation:: Up to 10dB / octave design counteracts frequency dependent absorption by metal in the installation over a bandwidth of approximately 5kHz.

Coverage

Maximum Coverage Area:: 200m2, i.e. rooms up to approx. 14m x 14m (PDA5/DD). 500m2, i.e. rooms up to approx.
22m x 22m (PDA7/DD). 1000m2, i.e. rooms up to approx. 31m x 31m (PDA11/DD). Loop impedance: 0.5 to 2 ohm.

Performance

Frequency Response (-3dB):: 100Hz to 5kHz; Distortion: Less than 1 % typical; Signal to Noise Ratio: Better than –65dB any input; AGC Range (3dB change in output voltage current): 10dB. AGC ratio: 20:1.

Supplementary

Sensitivity Level Controls

Line In, Mic, 12V Phantom, Outreach, Optical, Metal Comp, Drive1&2, Loop, Phase Shift.

Connectors:

Microphone (3-pin XLR on free-standing model; 3-way pluggable on wall-mount)
Line In (3-pin XLR on free-standing model; 3-way pluggable on wall-mount)
Loop (4 way binding post on free-standing model; 4-way connector on wall-mount)
Outreach (4-way pluggable connector)
Line Out (3-way pluggable connector)
Fault Relay (3-way pluggable connector)
Optical
230Va.c. connector (Mains lead for free-standing model; Fixed mains for wall-mount)

Dimensions and weight:

Free-standing: 67H x 218W x 280D mm. Wall-mount: 298H x 308W x 74D mm
Weight: Free-standing: 2.38kg;

Misc:

Panel Construction:Mild steel zintec, 1mm thick, black powder coated;
IP Rating: IP40; Operating Temp: 0oC to 40oC; Maximum Humidity: 95% non-condensing

Reference Pro 5/7/11