MB Quart Reference series mono subwoofer car audio amplifier featuring innovative sound quality and power technology. The RA1-300.1 is a 300 watt 1 ohm stable car audio amplifier. Reference amplifiers feature DC Sensing to allow any amplifier to be easy integrated into an OEM system by simply adapting a RCA cable from the source unit. Bass remote is included.
| Weight | 5.7 lbs |
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| Dimensions | 16.5 × 8.5 × 4 in |
| Type | Amplifier |
| Brand | MB Quart |
| Series | Reference |
| Category | Mobile |
| Condition | New |
| Color | Black |
| Warranty | 1 Year |
| Compatible Vehicles | Universal |
| Amp Class | Class Q1 Mono (Class D) |
| Amp Total Channels | 1 |
| Amp Max Power (watts) | 300 |
| Amp Power @ 2 Ohms (ch x watts) | 1 x 325 |
| Amp Power @ 4 Ohms (ch x watts) | 1 x 175 |
| Amp Crossover | Electronic |
| Amp Variable Low Pass Crossover 12dB per Octave | Variable 50Hz-250Hz |
| Amp Bass Boost | 0-12dB |
| Amp Subsonic Filter | OFF/25Hz |
| Amp Variable Voltage | 0.02-9V |
| Amp Signal to Noise | > 91dB |
| Amp Frequency Response | 25Hz-250Hz |
| Amp Total Harmonic Distortion (THD) | < 0.09% |
| Amp Speaker Level Audio Inputs | RCA |
| Amp Power Terminal 12v/GND | 4 AWG |
| Amp Speaker Terminal Wire Gauge | 12 AWG |
| Amp Fusing | 40A External |
| Proposition 65 Notice | WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Low Noise Preamplifier Circuit | Q-Stasis Pre Amplifier Stage: Maximum low voltage signal from the source unit comes into the amplifier circuit with minimal distortion. |
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| RCA Inputs | Nickel-Plated: High temperature impact resistant with hex screw terminals that allow for secure connections and is erosion resistant. |
| High Level Inputs | See Auto-Sense Feature. |
| Operation Mode | Mono only |
| Crossover Type | Variable electronic crossovers allow for complete control of the sound. |
| Electronic Equalizer | Control of amplifier output with on-board electronic crossover to tailor specific frequencies to speakers and subwoofers. Check specifications for specific frequencies for this amplifier. |
| Class / Topology | Class Q1 Mono (Class D): MB Quart’s Class Q1 offers the efficiency of today’s D-Class with increased engineering to focus on sound quality from the power supply through the output devices, the FLUID-FETS. |
| Output Device Technology | FLUID-FETS: MB Quart output devices, FLUID-FETS are painstakingly selected for their ability to efficiently produce power and mimic the sound quality of the highest end home amplifiers. |
| Heat Sink | Aluminum: Quickly dissipates heat to allow the amplifier to run lower impedance for longer duration. |
| Power Supply | Rugged MOSFET Pulse Width Modulation power supply: Allows amplifier to produce efficient power without taxing the vehicle electrical system. |
| Output Connections | Heavy duty connections allow for secure electrical signal to pass into wiring and resist erosion which will add longevity to the amplifier. |
| Connection Type | Secure connection for all power, ground and speaker connections. |
| Bass Remote Included | Included: Wired Bass Remote allows adjustments to bass frequencies to be made from the control mounted anywhere in the vehicle. |
| Auto Turn-On | DC SIGNAL SENSE: The DC SIGNAL SENSE switch will allow the amp to turn on when a signal is received on the RCA inputs, so an amplifier remote turn on wire is not needed to turn on the amplifier. This feature can also be turned off. |
View/Download (8.2 MB) | MB Quart Reference Amplifiers (RA1) Quick Start Guide (Rev1) |
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(8.2 MB)






