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Wall-mount Volume Control Attenuator


The QC10 CLASSIC is a UL listed, single-gang, 20W, ten-step, continuous rotary, audio level attenuator with an OFF position.
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The QC10 CLASSIC is a UL listed, single-gang, 20W, ten-step, continuous rotary, audio level attenuator with an OFF position. Brushed, stainless steel faceplate with printed positions and a black knob with white indicator mark.

Quam QC10 series of attenuators are designed to provide local or remote level control of 25 or 70.7 volt distributed loudspeakers. These attenuators can be used to control a single speaker or groups of loudspeakers when the total speaker load is twenty watts or less. Each model provides ten standard steps of attenuation plus an “off” position. Model QC10 features a contemporary style, embossed position identification stainless steel trim plate. QC10 Classic is the traditional style, embossed, paint filled stainless steel trim plate.

All models in this series except QC10RM include screws to mount to standard single gang electrical boxes with a depth requirement of 2-1/8 inches. Model QC10RM is supplied with a 2” x 2” dial scale and a barrel extension nut to accommodate mounting to rack panels up to 1/8” thick.

Quam QC10 CLASSIC Features:

  • Twenty watt continuous power rating
  • Protective bracketing guards against accidental damage to switch leadsduring installation
  • Durable, insulated, stranded switch leads prevent breakage and accidentalgrounds
  • Positive stop action switch
  • Two styles of stainless steel trim plate

Quam QC10 CLASSIC Specifications:

  • Power Rating: 20 Watts continuous
  • Positions: 10, plus “0” (off position)
  • Attenuation Steps, Ref. 70.7 volt line: Steps 1-2 =-6 dB, Steps 3-10 = -3dB
  • Total Attenuation: -36 dB (Not including “0” position)
  • Insertion Loss: < .5 DB
  • Wall Mounting Plate: Single gang brushed stainless steel
  • Recommended Wall Box: (Flush) Rayco #600 or equivalent, (Surface) QuamSE4W
  • QC10P Relay: Voltage 24 VDC Current .015 Ampere
  • Control Knob: Black w/ White position indicator

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