Alpine R2-A75M Next Generation R-Series 750W RMS x 1 at 2 Ohm, Class-D Mono Subwoofer Car Amplifier
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What's Inside?
- • Mono subwoofer amplifier (two 40A ATO fuses installed)
- • Four 1" pan-head screws
- • 3mm Allen key
- • 2.5mm Allen key
- • Alpine Verification Certificate
- • Warranty information
- • Power supply note
- • On-line product registration information
- • Owner's Manual
Why Choose Alpine R2-A75M Mono Subwoofer Amplifier?
Elevate Your Audio Experience
Take your sound to the next level with the Alpine R2-A75M Mono Amplifier, delivering 750W of powerful performance in a sleek, compact design. Featuring Alpine’s advanced Class D Amplifier Circuit, this R-Series amp combines exceptional sound quality with high efficiency, making it the ultimate upgrade for any car audio system.
Compact Power and Big Impact
The R2-A75M boasts a 15% smaller footprint than its predecessor, making installation easier in virtually any vehicle without sacrificing the same powerhouse 750W performance.
Effortless Control and Installation
The R2-A75M is designed for ultimate convenience, with all speaker connections on one side for easy access and top-mounted controls under a removable plate for quick adjustments to gain and crossover settings, while integrated mounting "feet" simplify installation.
Alpine R2-A75M in 2025 Ford F150 Single Cab Upgrade
Frequently Asked Questions (FAQ)
- • Can I use this amplifier with my factory radio?
Yes, it can be integrated with many factory audio systems using a compatible line output converter or high-level inputs. This lets you enjoy powerful bass without replacing your original head unit.
- • What impedance should my subwoofer be wired to?
The correct impedance depends on your subwoofer configuration and the amplifier's recommended operating range. Wiring the subwoofer properly ensures maximum performance and reliable operation.
- • Can I use this unit with a factory radio that lacks RCA outputs?
Yes, the amplifier includes speaker-level inputs that allow for integration with most factory audio systems. Note that you may require a speaker wire to RCA adapter to properly connect the signal.
- • Why isn't my subwoofer producing any sound?
The problem may be caused by loose power connections, incorrect speaker wiring, or a missing remote turn-on signal. Verifying all wiring and source unit settings usually restores audio output.
- • Why does my bass sound distorted at high volume?
Distortion is often the result of excessive gain, amplifier clipping, or incorrect crossover settings. Proper tuning delivers cleaner bass while protecting both the amplifier and subwoofer.
- • Does this amplifier get hot during normal use?
Yes, it is normal for a high-power amplifier to generate heat while operating. Mounting it in a well-ventilated area helps maintain consistent performance and long-term reliability.
- • Is it necessary to disconnect the battery before wiring?
Yes, you must disconnect the cable from the negative battery terminal before starting any wiring work to prevent electrical shorts, injury, or potential fire.
- • Why do I hear a humming or alternator whine from my subwoofer?
This is commonly caused by poor grounding, electrical interference, or improperly routed signal cables. Improving the ground connection and separating power and audio wiring usually eliminates the noise.
- • Can I install this amplifier under a seat?
Its compact chassis allows installation in many space-limited locations, including under seats in some vehicles. Make sure there is adequate clearance around the amplifier for proper cooling.
- • Can I adjust the audio settings after the installation is complete?
Yes, the amplifier features top-panel sound controls located beneath a removable plate, which allows you to adjust gain and crossover settings without needing to rework the entire installation.
- Low Frequency Response : 50-400 Hz
- Number of Channels : 1
- Frequency Response : 10-400 Hz
- Built In Crossovers : Yes
- RMS Power Output : 1x750 Watts
- Amplifier Class : D
- Fuse Rating : 80 A
Features:
- Powerful Mono Performance: 750W Mono Amplifier for deep, punchy bass.
- Class D Efficiency: Alpine’s Class D Amplifier Circuit delivers high power with low distortion.
- Compact Design: Reduced footprint, 15% smaller than the previous R-A75M model.
- Convenient Terminals: One-sided terminal layout for easy wiring.
- User-Friendly Controls: Top panel sound controls for quick adjustments.
- Easy Installation: Integrated mounting feet simplify setup.
- Optional Bass Control: Compatible with remote bass knob (requires RUX-KNOB.2 or RUX-H01, sold separately).
Specifications:
- RMS Power Output: 500W x 1
- Peak Power Output: ---
- Power at 2 Ohms: 750W x 1
- Power at 1 Ohm: ---
- Bridged Power: ---
- Minimum Impedance (Bridged): ---
- Minimum Impedance (Unbridged): 2 Ω
- Frequency Response: 10 Hz – 400 Hz
- THD at Rated RMS Power: 1%
- Signal-to-Noise Ratio: 75 dB
- Input Voltage: 14.4 V
- Amplifier Class: D
- Built-in DSP: No
- Remote Control: Optional
- Low-Pass Crossover Frequency: 50 – 400 Hz
- Low-Pass Slope: 24 dB/octave
- High-Pass Crossover Frequency: N/A
- High-Pass Slope: N/A
- Bass Boost: 0 – 12 dB
- Bass Boost Frequency: 50 Hz
- Fan Cooled: No
- Fuse Rating: 80 A
- Speaker Level Inputs: Yes
- Preamp Outputs: 2
- Dimensions (W x H x D): 11.125" x 2.25" x 6.9375"
- UPC: 793276084972
- Weight: 3
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for repair within 1 year from the original date of purchase with proper return authorization.
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Write a review!
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Type R amps has always been a target of mine to have for a long time and now that I got one, it really exceeded all my expectations. Top level amp. Power is unbelievable. Perfect sub to pair would be an R-Series too. Will buy one hopefully next month.
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this Alpine amp really pushed my sub to the max. clean lows, but the power is seriously impressive.
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After hours of use, its amazing that it's still really cool even with it's location a little bit isolated. You can really hear the difference the sub when you pair it with a cheap amp and much more expensive amp like this one. It's clean, louder, and really much better than before. Really powerful too
