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Memphis Audio SRX300.4

Street Reference 4-channel car amplifier — 50 watts RMS x 4

Item # 953SRX3004

Memphis Audio's Street Reference SRX300.4 amplifier will bring back the thrill and excitement to your car's sound...

Memphis Audio's Street Reference SRX300.4 amplifier will bring back the thrill and excitement to your car's sound...

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About the Memphis Audio SRX300.4

Economical street power

Memphis Audio's Street Reference SRX300.4 amplifier will bring back the thrill and excitement to your car's sound system without emptying your bank account. This 4-channel amplifier can send 50 watts RMS to each of your front and rear speakers. Or, you can bridge this amp to 2-channel mode to drive a couple of subs or high-performance components with 150 watts RMS each.

Economical street power

Memphis Audio's Street Reference SRX300.4 amplifier will bring back the thrill and excitement to your car's sound system without emptying your bank account. This 4-channel amplifier can send 50 watts RMS to each of your front and rear speakers. Or, you can bridge this amp to 2-channel mode to drive a couple of subs or high-performance components with 150 watts RMS each.

Control and style

Separate high-pass crossovers, low-pass crossovers, and bass boosts on the front and rear channels ensure you can drive almost any kind of speaker or sub with the control necessary for each application. Bright LED accent lighting lends a touch of style to your installation.

Memphis Audio SRX300.4

SRX300.4 inputs and controls

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Product highlights:

  • 4-channel car amplifier
    • 50 watts RMS x 4 at 4 ohms
    • 75 watts RMS x 4 at 2 ohms
    • 150 watts RMS x 2 bridged at 4 ohms (4-ohm stable when bridged)
  • variable low-pass filters (30-250 Hz, 12 dB/octave)
  • variable high-pass filters (50-1000 Hz, 12 dB/octave)
  • selectable bass boosts (0, 6, 12 dB at 45 Hz)
More Info:
  • preamp inputs only
  • wiring and hardware not included with amplifier
    • 8-gauge power and ground leads recommended
  • fuse rating: 25A x 2
  • dimensions: 14-3/16"W x 2-3/16"H x 8"D
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # SRX300.4

What's in the box:

  • 4-Channel amplifier
  • Four 25-amp ATO fuses (2 installed/2 spare)
  • Four 5/8" Screws
  • 4 Split-lock washers
  • Owner's manual
  • Warranty sheet

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Features

Output: The SRX300.4 4-channel amplifier is effectively two full range 2-channel amps built into one chassis. Each section of the amp is bridgeable, so it can be wired as 4-channel, 3-channel, or 2-channel.

Specifications:

  • Power Output:
    • 4Ω: 50 watts RMS x 4
    • 2Ω: 75 watts RMS x 4
    • Bridged: 150 watts RMS x 2 (into 4Ω)
  • Signal to Noise Ratio: >90 dB
  • THD:
    • 4Ω: <0.1%
    • 2Ω: <0.5%
  • Channel Separatio: >50 dB

Protection Circuitry: The amplifier features built-in circuitry to protect the against overload, short circuit, overheating, and reverse polarity. The LED on the side of the amplifier will glow red when the amplifier shuts down in any of these cases.

Controls: The amplifier has independent gain, crossover, and Bass EQ controls for the front and rear channels on the end panel:

  • Gain: rotary control to match the amplifier to the output of the source unit; variable from 100mV to 6.0V (line level) and 400mV to 12.0V (speaker level)
  • Crossover: 3-position switch; LPF (low pass filter), Full (crossover bypassed), HPF (high pass filter)
  • HPF: high pass frequency; continuously variable from 50 Hz to 1 kHz
  • LPF: low pass frequency; continuously variable from 30 Hz to 250 Hz
  • Bass EQ: 3-position switch; set bass boost to 0 dB, 6 dB, or 12 dB; centered at 45Hz
  • Mode: 3-position switch sets the input mode:
    • CH4: passes the four RCA inputs directly to the four output channels; maintains fader control
    • CH3: two RCA inputs feed the front channels in stereo and the rear channels bridged to mono
    • CH2: two RCA inputs feed the front and rear channels in stereo; no fader control

Connections: All the connections are nickel-plated to resist corrosion.

  • Input: 2 pair of RCA inputs; right front, left front, right rear, left rear
  • Fuses: two 25-amp ATO (blade) fuses installed on the end of the amplifier; 50-amp fuse (minimum) also required on the power wire within 18" of the battery
  • Power/Ground: screw-down terminals, 0.5" wide, will accept bare wire or spade connectors
  • Remote Turn-on: screw-down terminal, 0.35" wide, will accept bare wire or spade connector
  • Speaker Output: screw-down terminals, 0.35" wide, will accept bare wire or spade connectors

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