ACDelco

ACDelco Audio Amplifier - 20811234

Part #
20811234
Line:
ACD

Product Information

  • Warranty:  1 Year Limited Warranty
  • Unit of Measure:  Each
  • UPC:  # 707773686003
  • Color: Black, Natural
  • Height (in): 2-1/4 Inch
  • Height (mm): 58mm
  • Length (in): 9-7/16 Inch
  • Length (mm): 239mm
  • Width (in): 7-5/16 Inch
  • Width (mm): 186mm
  • Body Material: Aluminum, Steel
  • Wiring Included: No
  • Fuse Amperage (A): 20 Amp
  • Integrated Cooling Fan: No
  • Number Of RCA Terminals: 0
  • Number Of Speaker Terminals: 12

Applications for this Product

  • Select a vehicle to see vehicle applications.

Detailed Description

Audio Amplifier; GM Genuine Parts Audio Amplifiers are designed, engineered and tested to rigorous standards and are backed by General Motors. These amplifiers are part of the audio system and is a GM recommended replacement for your vehicle's original component. The purpose of the amplifier is to increase the power of a voltage or current signal. The output signal of an audio amplifier may consist of the same frequencies as the input signal or it may consist of only a portion of the frequencies, as in the case of a subwoofer or midrange speaker. The audio amplifier amplifies the signal and sends it to the appropriate speakers. Each of the audio output channel circuits (+ and -) at the audio amplifier have a DC bias voltage that is approximately one half of the battery voltage. The audio being played on the system is produced by a varying AC voltage that is centered around the DC bias voltage on the same circuit. The AC voltage is what causes the speaker cone to move and produce sound. Both the DC bias voltage and the AC voltage signals are needed for the audio system to properly produce sound. Some GM Genuine Parts may have formerly appeared as ACDelco GM OE.
  • This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle
  • Provide a wonderfully rich listening experience in your vehicle
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM OE
  • GM Genuine Parts are designed, engineered and tested to rigorous standards and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC or Cadillac vehicle.
  • GM regularly updates production and service part designs to integrate new materials and technologies

Brand Information

ACDelco has a tremendous history that encompasses almost 100 years. With new advances in parts technology, new inventions and innovative ideas, ACDelco holds the highest standards in the industry.

For almost 100 years, ACDelco has been sparking the automotive industry and firing customer enthusiasm with automotive products built with a pure passion for the automobile. As you might expect, it began as one man's hobby. But you may be surprised to discover ACDelco's integral part in American history with ties to the first self-starting automobile and this country's first moonwalk.Today ACDelco products are chosen the world over, an accomplishment only the past can explain.
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