Service broadcasts and emergency announcements through rail and tram Public Address (PA) systems are now part of everyday life. Their direct connection to the user’s hearing aid means that Hearing Loops are the only assistive listening technology suitable for use on public passenger vehicles.
The T14-1 hearing loop driver from Ampetronic offers performance you can rely on:
| Power Supply | 24V-36V / 72-110V DC, up to 200W max Harting Han Q 3D 3-pin (of 5-way insert) or WAGO 769 series detachable 3-way block24V Power Nominal voltage 24V DC Voltage range 14.4 – 33.6V DC Coupling Direct – no power converter Overcurrent Protection Internal replaceable fuse, T 4A L Power Consumption 61W (2.54 A) continuous audio 6W (0.25 A) quiescent 150W (6.25 A) short-term peak (at full 1kHz sine output)72V Power Nominal voltage 72V DC Voltage range 43 – 108V DC Coupling Isolated – uses power converter Overcurrent Protection Current foldback in power converter & non-replaceable 7A fuse in converter Power Consumption 70W (0.97 A) continuous audio 10W (0.14 A) quiescent 150W (2.08 A) short-term peak (at full 1kHz sine output)110V Power Nominal voltage: 110V DC Voltage range: 65 – 150V DC Coupling: Isolated – uses power converter Overcurrent Protection: Current foldback in power converter & non-replaceable 5A fuse in converter Power Consumption: 70W (0.64 A) continuous audio 10W (0.09 A) quiescent 150W (1.36 A) short-term peak (at full 1kHz sine output) |
| Safety Ground | M6 chassis stud (nut & star washer supplied) |
| Signal Inputs | Input 1 and 2 Pin selectable 2V / 30V / 100V balanced isolated line Input connector Audio inputs, status and enables through Harting Han Q 3D 21-way or WAGO 769 series detachable blocks |
| Enable Inputs | Isolated control input per channel |
| Ethernet control I/O | HTML and Telnet control interface M12 circular Industrial Ethernet (TCP/IP), 10/100M |
| VOIP Input (option) | SIP/RTP network audio input available through ethernet connection |
| Loop Output Drive Current | 14ARMS (19.8Apk) up to 60 seconds continuous 1kHz sine wave, peak >20A Cont. pink noise >6.6ARMS |
| Loop Impedance | Up to 0.49Ω reactive at 1.6kHz, with transformer ratio 1.67:1 |
| Drive Voltage | >24VRMS (33Vpk) available at maximum output current |
| Loop Connector | Harting Han Q 3D 2-pin (of 5-way insert) or WAGO 769 series detachable 2-way block |
| Status Output | Isolated relay contact and network options (inc. SNMP) Monitoring of loop resistance and operating status |
| Freq. Response | 100Hz to 5kHz ±1.5dB relative to 1kHz at low level. |
| Compression | The AGC is optimised for speech. Dynamic range Gain Control >38dB |
| Metal Loss Correction | Dual slope configurable MLC up to 4dB per octave |
| Dimensions | Width 296mm, depth 217mm, height 53mm excluding connectors |
| Weight | 1.5Kg |
| Operating temperature | According to EN50155 to OT4 -40C to +70C (+85C for 10 mins at startup) |
| Construction |
Rail:
The T14-1 is compliant with rail standard BS EN 50155:2007 and associated standards including BS EN 50121-3-2 (EMC) and EN 61373:2010 (shock and vibration). In addition, the T14-1 is compliant with EN 45545-2:2013 (Smoke and Fire behaviour) to HL3.
Automotive:
The 24V variant of the T14-1 is compliant with automotive regulation
EN/ECE R10 encompassing the requirements of EN 50498:2010.
Loop Performance:
The T14-1 will enable an Audio Frequency Induction Loop system that meets the requirements of EN 60118-4:2006 to be created, if the system is specified, installed and commissioned in an appropriate manner, including observing Ampetronic instructions.
Standards compliance to IEC 62489-1
T14-1 amplifiers are designed to form part of a system which can meet all requirements of international loop performance standard IEC 60118-4, and relevant parts of BS 7594. To fully meet requirements of these standards, correct design, installation, commissioning and maintenance are required.
Ampetronic drivers have CE and UL marks to all relevant safety and EMC standards.
Nottingham, United Kingdom
XA88, CLS2-R1
