Opus Technologies HDC20A is a hybrid amplifier combining an induction loop amplifier and an Auracast™ transmitter in one unit. Speech reaches hearing aids set to the T position as well as Auracast™-compatible hearing aids, receivers and phones.
The amplifier and kits are designed for reception desks, customer service points and other small spaces. Depending on the configuration, the system covers areas of up to 70 m².
Features
- Induction loop and Auracast™ in one unit
- Loop output current 3 Arms
- Automatic gain control (AGC) with peak detection adapted for speech
- Adjustable metal loss correction (MLC)
- Configuration with DIP switches, input and output level adjustment with potentiometers
- Indicator LEDs: power, Auracast™, fault and loop
- Mounting under the counter or on the wall
Package contents
HDC20A – amplifier
- HDC20A amplifier
- External power supply 24 V / 3 A
HDC20A-K – surface microphone
- HDC20A amplifier
- External power supply 24 V / 3 A
- OP-ILB loop
- OP-M surface microphone
- Adhesive clips for the loop
- Phoenix connectors
- Screwdriver
- IEC sticker indicating that the area is equipped for people with hearing loss
HDC20A-K1 – gooseneck microphone
- As HDC20A-K, but with an OP-M81 gooseneck microphone instead of the surface microphone
HDC20A-K2 – gooseneck microphone + earpiece
- All components of the HDC20A-K1 kit
- OP-E3 earpiece for customers without hearing aids
HDC20A-WALL – loop sign + surface microphone
- HDC20A amplifier
- External power supply 24 V / 3 A
- OP-WALL2 sign with integrated loop
- OP-M surface microphone
- Phoenix connectors
- Screwdriver
- IEC sticker indicating that the area is equipped for people with hearing loss
Technical specifications
- Power supply: 24 V DC, 3 A, external power supply
- Inputs: 1 line input (balanced or unbalanced), 1 microphone input 3.5 mm
- Microphone phantom power: 12 V, enabled with a DIP switch
- Loop output: 1, 2-pin connector, 3.5 mm pitch
- Loop output current: 3 Arms
- Output voltage: max. 48 Vpp depending on loop characteristics
- Frequency response: 80 Hz – 8 kHz
- Dimensions: approx. 100 × 150 × 24 mm
Installation
Mount the amplifier under the counter or on the wall and connect the loop, which is included in the kits. Adjust the amplifier to the IEC standard using the OP-FSM field strength meter, sold separately.