Alpine MRV-M250 Compact Mono Subwoofer Amplifier

Raising the Bar
The new V-Power products are now Class D digital amplifiers, resulting in a huge efficiency gain versus their predecessors without draining your battery or your pockets. Class-D provides continuous clean power to your speakers, operating at 80% efficiency far greater than conventional Class A or B amplifiers. Translation: Enjoy cleaner bass, even during extreme power demands.

Big Power, Small Package
V-Power amplifiers are known for their compact size, but don’t underestimate their power capacity. Although they have a 40% smaller footprint than their predecessors, they produce the same amount of power as before. Get the power you need, even if you have limited installation space.

Keep the Music Playing
The V-Power amplifiers provide reliable, stable thermal performance. They use a new, higher efficiency design to achieve non-stop music playback. A new circuit and heat sink design allows gradual thermal absorption and provides a gentle, almost undetectable power control.

Dual Feedback Modulation
Dual internal error correction technology – which had previously only been available in the PDX and X-Power amplifiers, is now integrated in V-Power mono amplifiers. The audio input signal is analyzed, compared, and corrected twice dynamically as the signal is processed through the amplifier. The result is amplifiers with the widest frequency response, higher damping factor, and lowest noise in its class.

Exceptionally Simple Sound Upgrade
The V-Power's 4-channel speaker level inputs connect directly to any head unit, without the need for external converters. This makes the V-Power amplifiers ideal for upgrading factory and aftermarket systems. The flush mount controls make for easy installation. The terminal covers conveniently snap-on without the need for additional tools, to protect the wiring connections while creating a clean, finished appearance.

Proven Power
Each V-Power amplifier comes with its very own birth-sheet. V-Power amplifiers are tested and documented to show their true actual output.

Remote Bass Level Adjustment
The MRV-M500 and MRV-M250 mono models are compatible with the RUX-KNOB remote bass knob (sold separately). Use the RUX-KNOB to conveniently adjust bass levels from your dash.

Specification

CEA-2006 Power Ratings
CEA-2006 Power Rating: 150W RMS x 1 (4-ohm, 14.4V at <1% THD+N)

RMS Power Ratings
Per channel into 4 Ohms: 150W RMS x 1 (14.4V at <1% THD+N)
Per channel into 2 Ohms: 250W RMS x 1 (14.4V at <1% THD+N) Sound Tuning
Crossover Frequency (LPF): 50 - 400 Hz, -24dB/oct.
EQ (Equalizer): 0 to +12dB, fc=50Hz

Dimensions
Foot Print (WxHxD) mm: 190 x 55 x 200 mm
Foot Print (WxHxD) in: 7-1/2" x 2-3/16" x 7-7/8"
Heat Sink (WxHxD) mm: 155 x 55 x 200 mm
Heat Sink (WxHxD) in: 6-1/8" x 2-3/16" x 7-7/8"

General
Power Requirements: 14.4 V.DC (11-16V allowable)
Input Sensitivity (RCA Input): 0.15 - 4.0 V
Input Sensitivity (Speaker Level Input): 0.4 - 10 V
Input Impedance: >10k ohms
Frequency Response (+0, -3dB: 1W into 4 Ohms) for Subwoofer: 7 -400 Hz
THD+N (10W into 4 Ohms): " .02 %
THD+N (10W into 2 Ohms): " .03 %
THD+N (Rated Power into 4 Ohms): " .2 %
THD+N (Rated Power into 2 Ohms): " .3 %
Damping Factor (10W into 4 Ohms at 100Hz): >500
Signal to Noise (1W into 4 Ohms): >85 dB
Signal to Noise (Rated Power into 4 Ohms): >105 dB
Remote Level: -20 to 0 dB
Weight: 1.5 kg

Features
Amplifier Type: Class-D (Digital)
Channel Design: 1 Channel (Mono)
Power Supply Design: DC-DC PWM Power Supply
Power Supply: MOSFET
Pre-Amp Stage: Discrete
Final Outputs: Power MOSFET
Crossover: Variable Lowpass Filter
Gain Control: Continuously Adjustable Gain Control
Bass EQ: Bass EQ Function
Bass Control: Remote Bass Control (RUX-KNOB) Ready
Remote Turn On: Remote Sensing Function (for RCA Input & Speaker Input)
Current Protection: Over-Current, Over-Voltage, Under-Voltage and Thermal Protection
Board Circuitry: S.T.A.R. Circuit
Speaker-Level Inputs: 4-channel Speaker Level Inputs
Power Indicator: LED Power Indicator
Thermal Control: Multi-stage Power Limits
Install Terminal Layout: Two-Sided
Screw Mount / Wire Cover: Mounting Screw Terminals

Car Toys thoughts on the Alpine MRV-M250
Just like it’s big brother, this amp is small but mighty. When you do not have lots of room but want big sound the Alpine MRV-M250 delivers. Thanks to Alpine’s Dual Feedback Modulation this amp delivers plenty of power, and remains whisper quiet. Thanks to Alpine V-Power the MRV-M250 pumps out 250 watts RMS without draining your battery.

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