MB Quart Formula series compact five channel car audio amplifier featuring innovative sound quality and power technology to run four full range channel and a subwoofer channel. The FA2-900.5 is a 900 watt 1 ohm stable (channel 5 only) car audio amplifier. Formula 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 | 8.18 lbs |
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| Dimensions | 20.67 × 7 × 3.23 in |
| Item Weight (lbs) | 6.78 |
| Item Length (in) | 15.0 |
| Item Width (in) | 5.82 |
| Item Height (in) | 2.2 |
| Type | Amplifier |
| Brand | MB Quart |
| Series | Formula |
| Category | Mobile |
| Condition | New |
| Color | Black |
| Model Replaced | FA1-900.5 |
| Warranty | 1 Year |
| Compatible Vehicles | Universal |
| Amp Class | Class D |
| Amp Total Channels | 5 |
| Amp Max Power (watts) | 900 |
| Amp Power @ 1 Ohm (ch x watts) | 1 x 500 (Channel 5 only) |
| Amp Power @ 2 Ohms (ch x watts) | 4 x 100 + 1 x 250 |
| Amp Power @ 4 Ohms (ch x watts) | 4 x 50 + 1 x 200 |
| Amp Crossover | Variable Electronic 12dB Per Octave |
| Amp Variable High Pass Crossover 12dB per Octave | 40Hz-400Hz |
| Amp Variable Low Pass Crossover 12dB per Octave | 40Hz-300Hz |
| Amp Tone Control / Parametric EQ | Built-in Bass Control |
| Amp Bass Boost | 0-12dB |
| Amp Subsonic Filter | 10Hz-40Hz |
| Amp Variable Voltage | 0.2-12V |
| Amp Frequency Response | 10Hz – 22KHz |
| Amp Total Harmonic Distortion (THD) | < 0.1% |
| Amp Speaker Level Audio Inputs | Yes |
| Amp Power Terminal 12v/GND | 4 AWG |
| Amp Speaker Terminal Wire Gauge | 12 AWG |
| Amp Fusing | External 100A |
| 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 nickel-plated RCA inputs that allow for secure connections and is erosion resistant. |
| High Level Inputs | 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. |
| Operation Mode | 5 Channel operation |
| 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 (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 | Heavy duty heat-sink efficiently moves heat from the MOSFET where it can be cooled. |
| Power Supply | Rugged MOSFET Pulse Width Modulation power supply: Allows amplifier to product 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. |
| LED System Protection Circuitry Diagnostics | Monitor overload and speaker short protection with illuminated indicators on the amplifier end panel. |
| Bass Remote Included | Included on mono and 5 channel amplifiers. This allows the driver to make subtle changes to the bass response of the audio system from the seated listening position. |
| 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  (24.9 MB) | MB Quart Formula Amplifiers (FA2) Quick Start Guide (Rev1) |
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