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Infinity Reference 7540a

111W x 4 car amplifier (New Stock)

Item # 108R7540A

Whether you're building a component system, powering a pair of full-range speakers, or just pounding away with a...

Find what Fits your car

Whether you're building a component system, powering a pair of full-range speakers, or just pounding away with a...

Discontinued item

Item # 108R7540A

About the Infinity Reference 7540a

Whether you're building a component system, powering a pair of full-range speakers, or just pounding away with a subwoofer, there's an Infinity Reference series amp ready to take on the job. Boasting impressive power ratings and fine-tuned controls, these amplifiers are capable of sending your music to new sonic heights.

Whether you're building a component system, powering a pair of full-range speakers, or just pounding away with a subwoofer, there's an Infinity Reference series amp ready to take on the job. Boasting impressive power ratings and fine-tuned controls, these amplifiers are capable of sending your music to new sonic heights.

It's all thanks to high-output MOSFET power supplies — which ensure maximum power delivery to your speakers for efficient operation — and variable filters that let you contour the output to fit your music. And, since every Infinity Reference amplifier is CEA-2006 compliant, you'll know you'll get the power as advertised.

Whatever your power needs, the versatile Infinity Reference 7540a multi-channel amplifier can take care of them. With 111 watts RMS x 4 channels, it can easily drive two sets of full-range or component speakers. Or, you can bridge the channels to stereo mode, and send 278 watts RMS each to a pair of subwoofers or component speaker system.

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Product highlights:

  • 4-channel car amplifier
  • 111 watts RMS x 4 at 4 ohms (139 watts RMS x 4 at 2 ohms)
  • 278 watts RMS x 2 at 4 ohms in bridged mode (4-ohm stable in bridged mode)
  • 2-, 3-, or 4-channel output
  • variable high-/low-pass filters (32-320 Hz, 12 dB/octave)
  • variable Bass EQ (0-12 dB @ 50 Hz)
  • CEA-2006 compliant
  • preamp- and speaker-level inputs
  • preamp outputs
  • 8-gauge power and ground leads recommended — hardware and wiring not included with amplifier
  • 16-3/8"W x 2-11/16"H x 12-1/8"D
  • fuse rating: 30A x 2
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # Reference 7540a

What's in the box:

  • 4-Channel amplifier with two installed 30A ATC fuses
  • Two 11" speaker-level input harnesses
  • Two 30A ATC fuses
  • 4 Self-tapping screws
  • 1 Silica gel packet
  • One 8" x 2-1/2" Infinity sticker
  • Instructions
  • Amplifier Quick Start Guide
  • Warranty card

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Features
Inputs and Outputs Notes

Features

Status LEDs: The amplifier has the following status LEDs:

  • Clip: indicates the amplifier is being overdriven, and your speakers may be in danger. This should blink only on musical peaks, and not be on constantly.
  • Power: indicates the amplifier is on
  • Protect: indicates any of the following problems: DC voltage on amplifier output, overheating, under voltage, over voltage, and short circuit in the speakers or wire

Variable Filters: The front and rear channels have separate filters. Each filter can be set for low-pass, high-pass, or full-range operation. In the low-pass and high-pass modes, each filter can be adjusted from 32 to 320 Hz. In each case, the filter has a slope of 12 dB per octave.

Bass Boost: For added low frequency performance, this amplifier has a 0 to 12 dB variable bass boost centered at 50 Hz.

Preamp Outputs: The preamp output jacks provide a convenient source for daisy-chaining an additional amplifier without running an extra set of RCA cables from the front of the vehicle to the amplifier location. These outputs provide a full-range signal.

Inputs and Outputs Notes

Right Side of Amplifier:

  • +12V (power): 0.357" screw terminal
  • Remote: 0.357" screw terminal
  • GRD (ground): 0.357" screw terminal
  • Speakers: 0.357" screw terminals

Left Side of Amplifier:

  • Front High Level Input: 4-pin jack for use with supplied speaker-level input harness
  • Rear High Level Input: 4-pin jack for use with supplied speaker-level input harness

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