V-Series V15a+ Hearing Loop Driver. 2 X 90° phase shifted (DSP controlled) Class-D amplifier 5ARMS @ >15VRMS

DSP controlled auto gain and high frequency compensation for metal loss.

Audio Time delay, Switchable AGC, Loop diagnostics, LCD display. 1 RU half rack width.

Our highly efficient and compact V15a+ is a constant current, dual output hearing loop driver, with integral phase shifter for phased array configuration. The V15a+ is suitable for small and medium sized facilities and venues.

It has Class-D amplifier output stages and an audio subsystem built around an advanced DSP core. Combined with a powerful CPU to ensure peak performance, the V15a+ uses cutting edge technology proven in the pro audio world to achieve life-like speech and first-class music reproduction.

Applications

Suitable for small and medium sized facilities, such as:

• Meeting rooms
• Classrooms
• Care & nursing rooms
• Waiting rooms
• Lecture halls

Standards

• Induction loop performance compliant with BS EN60118-4 (when correctly installed)

Features

• DSP controlled automatic gain control and high frequency compensation for metal loss
• 2 X 90° phase shifted (DSP controlled) Class-D amplifier output stages capable of delivering 5ARMS @ >15VRMS
• Ultra-efficient power utilisation (up to 90% efficient)
• High Pass Filter
• Audio time delay
• Switchable AGC (Automatic Gain control)
• Enhanced Loop Diagnostics
• True constant current output stage
• Simple user interface
• Backlit LCD display
• Sleep mode
• Continuous self-testing
• Integrated protection circuits with temperature, voltage, short circuit and DC detection
• Compact half-width 1U chassis (compatible 6U Rack
• Cabinet available upon request)

Specifications

• Dimensions:
  Height – 42mm (1.65”)
  Width – 196mm (7.80”)
  Depth – 132mm (5.20”) [150mm (5.90”) incl. XLR and control dial]
• Weight: 978g (2.15lbs)
• Construction: Mild Steel
• Finish: Black Powder Coated

Technical Data

• 100W 24Vdc 4.17A via External PSU (PS-60)
• Class 6 External PSU (100V-240V AC 50Hz-60Hz)

• 1 X Balanced Line Level (3 Pin Euro-Block)
  or
  1 X Balanced Line Level (XLR) [optimised for -10dBV to 0dBv]
• 1 X Mic Level (12V phantom power via 680Ω) [optimised for levels above -45dBv]
• 1 X DC Input

• 2 X Loop Output (5.08mm Euro-Block)

• Voltage: 15Vrms (42.3Vpk-pk) @ 5Arms (14.14Apk-pk)*
• Current: 5Arms (14.14Apk-pk) up to 300 seconds
• Loop Connector: 5.08mm Euro-block

• Frequency Response: 80Hz to 6.5kHz
• Distortion: THD+N <0.3% (-50.5dB) Full current both outputs driven
• AGC: Switchable (ON/OFF)
• HF Comp: 7 optimised stages
• Acoustic Time Delay: 10ms to 70ms adjustable in 1ms steps

• Display: LED Backlit LCD display
• Control: Single rotary control

• Main Display:
  Open circuit loop (DCR measurement)
  Loop ground fault
• Front Panel LED: Output voltage clipping
• Cooling: Internal heatsinks with thermal protection