Ampetronic C7-2N MultiLoop hearing loop driver

General Description

The Ampetronic C7-2N networkable induction loop driver features two ‘D’ amplifiers, digital signal processing and an integral phase shifter for low-spill installations. A user interface with OLED screen ensures quick and easy setup. The amplifier can be used freestanding or mounted into a 1U 19” rack with the integrated brackets.

The C7-2N Series hearing loop drivers from Ampetronic mark a substantial development in assistive listening technology. C Series units feature digital signal processing and networking functionality, and enable fast, accurate setup and adjustment via a very simple and easy to use user interface.

Ampetronic has engineered the C Series to offer the high-end performance, consistency and certainty of results usually associated with top of the range hearing loop drivers, all for the price of a mid-range amplifier. Class ‘D’ drivers built into the C Series ensures low running and maintenance costs.

Network versions enable installers, technicians and facilities managers to remotely control the driver and monitor its condition status along with resistance and induction measurements. Fault condition alerts via email or Telnet provide reassurance that an operator will be informed of any issues with performance delivery.

The C7-2N features 7 Amps RMS current loop output, plus ample voltage headroom, making it suitable for a wide range of applications. Installation can be performed with total confidence; unique, multi-stage filtering ensures compatibility with other systems and global EMC regulations. These products are designed to form part of a system that can meet all of the requirements of the international loop performance standard IEC60118-4, and the relevant parts of IEC TR 63079.

Features

Simple digital interface enabling accurate adjustment
Single or dual output options. Dual outputs featuring accurate and stable 90° phase shift
Highly energy efficient Class-D amplifiers with low heat dissipation providing low running and maintenance costs
Networking with browser interface for remote reporting, adjustment, active status monitoring and remote fault reporting via email or Telnet
Built-in test tones – controllable with LoopLink
AGC and dual slope configurable MLC
Compact 1U rack mount unit with internal transformer for simple rack installation
Optimised for speech frequencies and capable of high-quality musical reproduction
Industry standard Phoenix connectors
Data compliant with IEC 62489-1 Standard
100V line input
Line level/Mic level (with phantom power) input

Delivery Includes

1 C7-2N MultiLoop hearing loop driver

Technical Data

Inputs
Power: 35/55/95W 230V AC nominal, 45-65Hz
Fuse values: C7-2N 120V – T1.6AL | 230V – T1AL
Input 1 & 2: 3 way 3.5mm euroblock screw terminal input (supplied) with
a balanced microphone and line level operation. Switchable 250Hz low cut filter (network models only). Selectable via rear panel switch.
Microphone / Line: Microphone specification; 200 – 600Ω, sensitivity -67dBu.
Selectable 24V phantom power on microphone only. Line sensitivity -42dBu
100V Line: 2-way 5mm euroblock screw terminal (supplied)
100V sensitivity +7dBu
Outputs
Loop Output Drive Voltage: 20VRMS (28Vpk) at maximum output current per channel
Loop Output Drive Current: C7-X
7ARMS (10Apk) up to 60 seconds continuous 1kHz sine wave, peak >10A per channel Cont. pink noise 3.3ARMS short term peaks >10A per channel.
Loop Connectors: 4-way 5mm euroblock screw terminal (supplied) for each output, for star-quad configured feed cables.
DC Output: 2 way 3.5mm euroblock screw terminal Re-settable, fuse protected 12V 0.1A. Controllable to reflect amplifier status (network models only)
Line Output: 3 way 3.5mm euroblock screw terminal (supplied) post AGC balanced output
Audio System
Frequency Response: 80Hz to 6.5kHz
Distortion: THD+N <0.3% 1kHz sine at full current
Automatic Gain Control: The AGC is optimised for speech. Dynamic range >36dB
Metal Loss Correction: Corrects system frequency response issues due to metal structures in a building. Gain constant at 1kHz, adjustable gain slope from 0 to 4dB per octave in 0.25dB increments. Custom 2 slope MLC allows different slopes and transition frequency to be set via the menu (network models only). This does not compensate for signal loss from metal structures which can be significant.
Phase Shift: User selectable (web only) at 0° or 90° between outputs
Additional Functions
Status Tri-colour LED:
Solid GREEN = normal operation
Flashing GREEN = sleep or standby mode
Flashing RED = error
Flashing AMBER = firmware updating
Physical
Size: Full width 1U 19″ rack mount.
Width 430mm Depth 190mm Height 44mm
Mounting Options: Freestanding
1U 19″ rack mount (brackets fitted as standard)
Weight: C7-2N: 3.1 kg
Environment: IP20 rated; 20 to 90% relative humidity; 0 to 35ºC
Cooling: Passive