Formula Sound 079 - AVC4 - Auto Volume Control (Twin AVC 2)

The AVC-4 Automatic Volume Control is an analogue, stereo automatic volume controller, which means the dynamics of the sound remain the same, whereas compressors alter the sound. The AVC-4 is 2 AVC2’s in a single 1ru case.

Increasingly it is a condition of licensing that sound levels in a venue are controlled to a specified maximum level, the AVC 4 will perform this task.

The AVC 4 will control the level of 2 stereo channels to a maximum set level (each stereo channel is set independently, and may have different levels). Essentially it is a dual version of the AVC 2.

Product Features

• A row of 8 LEDs on the front panel show how much attenuation is being held
• For added security, a panel fastens to the back panel and is supplied as standard
• An analogue, stereo automatic volume controller
• The AVC 4 will control the level of 2 stereo channels to a maximum set level
• The AVC 4 is essentially a dual version of the AVC 2
• Noise floor <-90db

Product Specifications

General

• Frequency Response:  20 Hz – 20 KHz,  +/- 0/5dB
• Operating threshold range
  • High range Average level adjustable:  +5dBu to –2dBu
  • Low range Average level adjustable:  -8dBu to –14dBu
• Attenuator range:  -3dB, –6dB, -9dB, -12dB, -15dB, -18dB, -24dB, -30dB
• Control chain:  Standard is combined Linear and A weighting but may be set to either Linear or A weighting.
• Auxiliary connections 25 way D connector:  Each stereo channel has Mute, Dim, Level 2 selection and also clip, warning and remote display drives. Power at +/- 18V is also available limited to 50mA max. 
• Power IEC mains connector: 
  • 240V:  Mains fuse 250mA anti-surge.
  • 110V:  Mains fuse 500mA anti-surge - Internal selection switch.

Physical

• Finish:  Front and Rear panels are black anodised aluminium with silver legend and enclosed by black plastic-coated steel case.
• Dimensions:  Width 19” Depth 8” Height 1.75” (482 x 200 x 44.5mm)
• Weight:  4 Kg (Out of shipping carton).