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MB Quart RA1-300.1

Reference Series mono subwoofer amplifier — 325 watts RMS x 1 at 2 ohms

Item # 049RA13001

MB Quart's Reference Series RA1-300.1 mono subwoofer amplifier can send up to 325 watts RMS to your sub, so you can...

Find what Fits your vehicle

MB Quart's Reference Series RA1-300.1 mono subwoofer amplifier can send up to 325 watts RMS to your sub, so you can...

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In stock
$199.99

About the MB Quart RA1-300.1

Power your bass

MB Quart's Reference Series RA1-300.1 mono subwoofer amplifier can send up to 325 watts RMS to your sub, so you can hear and feel the beat clearly. MB Quart designed this amp to power high-quality aftermarket subs, like their Reference Series subwoofers. The Class D amplifier utilizes MB Quart's unique Q-Stasis (Class SQ) circuitry to improve the accuracy and clarity of your music while still providing the oomph it needs.

Power your bass

MB Quart's Reference Series RA1-300.1 mono subwoofer amplifier can send up to 325 watts RMS to your sub, so you can hear and feel the beat clearly. MB Quart designed this amp to power high-quality aftermarket subs, like their Reference Series subwoofers. The Class D amplifier utilizes MB Quart's unique Q-Stasis (Class SQ) circuitry to improve the accuracy and clarity of your music while still providing the oomph it needs.

Versatile features

MB Quart RA1-300.1 remote

Remote bass knob included

The amplifier's features include speaker-level inputs with signal-sensing amp turn-on, so it will work in almost any system. A low-pass filter, subsonic filter, and a bass boost EQ help dial in just the right amount of bass bump. A remote bass knob is included so you can control your subwoofer's level from the front seat.

MB Quart RA1-300.1

RA1-300.1 power and output connection panel

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Product highlights:

  • mono subwoofer amplifier
    • 175 watts RMS x 1 at 4 ohms
    • 325 watts RMS x 1 at 2 ohms
  • variable low-pass filter (50-250 Hz, 12 dB/octave)
  • variable bass boost (0-12 dB at 45 Hz)
  • switchable subsonic filter (Off/25 Hz, 12 dB/octave)
  • wired remote bass level control included
More Info:
  • preamp and speaker-level inputs
    • speaker wire-to-RCA adapters required for speaker-level input
    • DC offset-sensing turn-on with speaker-level input
  • wiring, fuse, and hardware not included with amplifier
    • 4-gauge power and ground leads and a 40A fuse recommended
  • dimensions: 11-7/8"W x 2-1'4"H x 5-7/8"D
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # RA1-300.1

What's in the box:

  • Mono amplifier
  • Remote level control
  • 16' Remote level control cable (RJ-45 connectors on both ends)
  • 4mm Allen key
  • 2mm Allen key
  • Two 3/8" screws
  • Four 5/8" screws
  • Logo badge
  • Quickstart guide

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Features

Overview: The MB Quart RA1-300.1 monoblock amplifier can provide up to 325W x 1 @2Ω, with a frequency response of 25Hz to 250Hz for deep solid bass. The mono amplifier features MB Quart's Q-Stasis pre-amplifier stage that reduces incoming noise for improved sound quality. Class-D topology combined with aluminum heat sinks allows the amp to produce the maximum amount of power while keeping cool.

Power Rating:

  • 325W x 1 @ 2Ω
  • 175W x 1 @ 4Ω

Connections:

  • Audio Inputs: A single pair of RCA jacks provides the audio input for the amp, accepting either pre-amp level or speaker-level input signals.

Note: If connecting the amp with speaker-level input signals, speaker wire-to-RCA adapters will be required (sold separately).

  • Speaker Outputs: Two pairs of speaker outputs on set-screw terminals provide a mono output signal for connecting up to two subwoofers. The speaker outputs can accept up to 12 AWG speaker wire.
  • Power/Ground/Remote: Three set-screw terminals are provided, with power and ground terminals accepting up to 4 AWG wire and the remote turn-on accepting up to 12 AWG wire. 4 AWG wire is recommended for both the power and ground with an 80A fuse (sold separately) installed on the power wire.
  • Remote Level Control: An RJ-45 socket lets you connect the included Remote Level Control, for adjusting the bass level from the front of the vehicle. The Remote Level Control is designed to mount underneath a dash panel, within easy reach of the driver, and includes a 16' RJ-45 cable. Remote Level Control dimensions: Width = 2.44", Height = 0.97", Depth = 2.95" (including cable).

Controls: A removable translucent cover-plate protects the top-panel audio controls and can be accessed using the provided 2mm Allen key.

  • Level: A rotary dial lets you adjust the incoming signal level, with an adjustment from Min to Max.
  • Bass EQ: An adjustment dial lets you boost the signal at 45Hz with a 0-12dB range.
  • LPF: A rotary low-pass filter can remove frequencies below the setting amount, with a range of 50Hz-250Hz.
  • Sub Sonic: A 2-way switch lets you turn the 25Hz subsonic filter On or Off.
  • Activation Type: A 2-way switch lets you select the turn-on method for the amp. Selections include:
    • REM Turn-On: Used when running a wired turn-on signal from the headunit.
    • DC Sense: Used when running speaker-level signals into the amp without a turn-on wire.

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