Formula Sound AT1 Auto Volume for Sentry - Wall Mount

The AT-1 has been designed to be used in conjunction with the Sentry MK2 environmental control unit.

It is a stereo unit, designed to control the volume level by reducing the signal, which in turn reduces the sound being measured

Product Features

• To be used in conjunction with the Sentry MK2
• Controls volume level of an audio system connnected to it
• Ensures DJ doesn't get cut off by playing too loudly
• Led indicators on the front panel show how much the AT-1 is attenuating
• Free-standing Version
• Finish: Black

Product Specifications

General

• Case Styles:   Two versions are available: - a 19" 1RU unit, and a free standing or wall mounted unit which may be more convenient for connecting to visiting systems.
• Input connectors
  • 2 X ¼" 3 pole jacks which will also accept 2 pole jacks.
  • 2 X 3 pin XLRs.
• Output connectors
  • 2 X ¼" 3 pole jacks which will also accept 2 pole jacks.
  • 2 X 3 pin XLRs.
  • Using 2 pole jacks will automatically convert the inputs or outputs to unbalanced operation.
  • To use XLRs unbalanced connect pins 1 and 3 to screen.
• Control connector:  1 X 4 pin connector. The mating half is supplied and features screw terminals. (4 core cable connects to Sentry Mk2)
• Maximum input level:  +20dBu.
• Maximum output level:  +20dBu into a 600 ohm load at <.01% distortion.
• Input impedance:  20K ohms balanced, 10K ohms unbalanced.
• Noise:  EIN -90 dBu.
• Attenuator range:  Unity Gain to -90dB.
• Led Indicators:   -3dB, -6dB, -9dB, -12dB, -15dB, -18dB, attenuation. Input Clip.
• Mains power:  IEC connector fused @ 250mA. 220 or 110VAC may be specified.

Physical

• Dimensions
  • 19" 1RU version:  19" 483mm wide 1.75" 45mm height 4.9" 125mm depth exc connectors.
  • Free standing version:  15.55" 395mm wide 1.87" 48mm height 4.9" 125mm depth exc connectors.
• Finish:
  • Front and rear panels black anodised aluminium
  • Covers black plastic-coated steel.