Ampetronic C7-2 MultiLoop hearing loop driver

General Description

The Ampetronic C7-2 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 C7-2 Series hearing loop drivers from Ampetronic mark a substantial development in assistive listening technology. C Series units feature digital signal processing 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.

The C7-2 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
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 C7-2 MultiLoop hearing loop driver

Technical Data

Inputs
Power: 35/55/95W 230V AC nominal, 45-65Hz
Fuse values: C7-2 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. 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.
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. 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: C7-2: 3.1 kg
Environment: IP20 rated; 20 to 90% relative humidity; 0 to 35ºC
Cooling: Passive