About the MB Quart RA1-750.1
Power your bass
Power your bass
MB Quart's Reference Series RA1-750.1 mono subwoofer amplifier can send up to 750 watts RMS to your sub, so you can hear and feel the beat clearly down to your bones . 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
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.
Power and output connection panel (RA1-300.1 model shown)
Product highlights:
- mono subwoofer amplifier
- 300 watts RMS x 1 at 4 ohms
- 500 watts RMS x 1 at 2 ohms
- 750 watts RMS x 1 at 1 ohm
- 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 an 80A fuse recommended
- dimensions: 13-3/4"W x 2-1/4"H x 5-7/8"D
- warranty: 1 year
- MFR # RA1-750.1
What's in the box:
MB Quart RA1-750.1 owner's manual
- 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
Reviews (4)
Customer reviews for MB Quart RA1-750.1
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Average review:
4.5 out of 5 starsCustomer photos
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More details on the MB Quart RA1-750.1
Features & specs
| Performance | ||
|---|---|---|
| RMS Power Output (Watts x Channels) |
300 x 1 | |
| Peak Power Output (Watts x Channels) | N/A | |
| Power at 2 Ohms (Watts x Channels) | 500 x 1 | |
| Bridged Power (Watts x Channels) | N/A | |
| Minimum Impedance Bridged | N/A | |
| Minimum Impedance Unbridged | 1 | |
| Minimum Impedance | 1 | |
| Best Frequency Response | 25-250 Hz | |
| THD at Rated RMS Power | --- | |
| Signal to Noise Ratio | 99 dB | |
| Input Voltage | 14.4v | |
| Features | ||
| Amplifier Class | D | |
| Low-Pass Crossover Frequency | 50-250Hz | |
| Low-Pass Slope (dB/octave) | 12 dB/octave | |
| High-Pass Crossover Frequency | N/A | |
| High-Pass Slope (dB/octave) | N/A | |
| Bass Boost | 0-12 dB | |
| Bass Boost Frequency | 45Hz | |
| Fan Cooled | No | |
| Fuse Rating | 80 | |
| Speaker Level Inputs | Yes | |
| Preamp Outputs | No | |
| Width (inches) | 13-3/4 | |
| Height (inches) | 2-1/4 | |
| Depth (inches) | 5-7/8 | |
| Parts Warranty | 1 Year | |
| Labor Warranty | 1 Year | |
Product Research
Features
Overview: The MB Quart RA1-750.1 monoblock amplifier can provide up to 750W x 1 @1Ω, 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:
- 750W x 1 @ 1Ω
- 500W x 1 @ 2Ω
- 300W 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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Customer Q&A
1 question already asked
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Amp looks great, sleek, slim. Fit well under passenger seat of 2007 nissan frontier.
Joe from Nampa, ID