Signet’s PDA and PRO series of phase-shifting, Class D induction loop amplifiers have been designed and manufactured in the UK to suit areas up to 1000 square metres such as meeting rooms, offices, churches, classrooms, or theatres. This series of AFILS loop amplifiers are also available as desktop amplifiers, see SIGNET AFILS LOOP AMPLIFIER SYSTEMS - Phase shifting, desktop
PDA5, PDA7, and PDA11 constant current amplifiers feature phase-shifting technology to give consistent coverage with low chance of dead spots, and minimal overspill. An LED interface along with four membrane control buttons aids navigation and easy setup, whilst also giving clear indication of operation and fault status.
Model coverage
PDA5/DW 2x 3.25 Amp 200m2 (approx. 14 x 14m)
PDA7/DW 2x 5 Amp 500m2 (approx. 22 x 22m)
PDA11/DW 2x 7.5 Amp 1000m2 (approx. 31 x 31m)
All wall mounting models have the same front panel functionality, and rear panel connectivity including 2x selectable mic/line inputs on 3-way Phoenix connectors, 1x outreach input via 4-way Phoenix connector for connection to up to ten compatible outreach plates, see SIGNET AFILS LOOP AMPLIFIER SYSTEMS - Accessories - Outreach Plates; loop output on 4-way Phoenix connector, and line output on 3-way Phoenix connector. There is also a 3-way Phoenix connector for fault relay. These wallmounting amplifiers require a fixed mains electric connection. Once attached to the wall, the front panel can be removed to access I/O connectivity.
Input sensitivity: -20dBU typical, line; -42dBU typical, mic. Outreach input sensitivity: 0dBU. Outreach input impedance: >10k. Outreach power: 24V DC, 100mA max. Loop output voltage: 14V. Line output: 775mV. Metal compensation: up to 10dB. Frequency response: 100Hz – 5kHz, -3dB. Distortion: Less than 1%. Signal to noise: Better than -65dB. AGC range: 10dB, 3dB change in output voltage current. AGC ratio: 20:1. IP rating: IP40. Dimensions (HxWxD): 298 x 308 x 74mm. Weight: 3.35kg.
PRO5, PRO7, and PRO11 have the same functionality as the PDA5, PDA7, and PDA11 amplifiers above, however in place of the LED interface is an OLED display giving more in-depth information, ease of setup, and fault and diagnostics feedback. PRO/DW models also feature a ‘Toslink’ optical input for connection to devices such as TV or sound bar.
Model coverage