Alpine R-A75M
R-Series 750W Mono Subwoofer Amplifier
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Alpine R-A75M R-Series Mono Subwoofer Amplifier
The Alpine R-A75M is a high-performance mono Class D amplifier engineered to deliver powerful and precise bass reproduction. As part of Alpine's R-Series, this amplifier offers 750 watts RMS at 2 ohms, ensuring your subwoofer receives clean and efficient power. Its compact design and advanced features make it an ideal choice for audiophiles seeking to enhance their car audio system with deep, impactful bass.
| Key Features | |
|---|---|
| Power Output | 500W RMS x 1 @ 4Ω; 750W RMS x 1 @ 2Ω |
| Amplifier Class | Class D |
| Frequency Response | 10Hz – 400Hz |
| Signal-to-Noise Ratio | >85dB (1W into 4Ω) |
| THD+N | <0.02% (1W into 4Ω) |
| Crossover Controls | Variable low-pass filter (50Hz – 400Hz, 24dB/octave); Variable subsonic filter (8Hz – 40Hz, 24dB/octave) |
| Bass Boost | 0–12dB at 50Hz |
| Input Sensitivity | Low level: 0.1 – 4V; High level: 0.4 – 10V |
| Optional Remote | Compatible with Alpine RUX-KNOB.2 (sold separately) |
| Dimensions (W x H x D) | 10.75" x 2.13" x 10" |
| Weight | 7 lbs, 3 oz |
| What’s in the Box |
|---|
| 1 × Alpine R-A75M Mono Amplifier |
| 2 × 40A ATO Fuses (installed) |
| 4 × Mounting Screws |
| 3 × Allen Wrenches (2mm, 2.5mm, 3mm) |
| 1 × Owner’s Manual |
| 1 × Alpine Verification Certificate (“Birth Sheet”) |
| 1 × Warranty Information Sheet |
| 1 × Installation Guide |
| 1 × Alpine Registration Card |
| Technical Specifications | |
|---|---|
| Model Number | R-A75M |
| Channels | 1 (Mono) |
| Power Output @ 4Ω | 500W RMS x 1 |
| Power Output @ 2Ω | 750W RMS x 1 |
| Frequency Response | 10Hz – 400Hz |
| Signal-to-Noise Ratio | >85dB (1W into 4Ω) |
| THD+N | <0.02% (1W into 4Ω) |
| Input Sensitivity | Low level: 0.1 – 4V; High level: 0.4 – 10V |
| Crossover Controls | Variable LPF (50Hz – 400Hz, 24dB/octave); Variable subsonic filter (8Hz – 40Hz, 24dB/octave) |
| Bass Boost | 0–12dB at 50Hz |
| Fuse Rating | 40A × 2 |
| Recommended Wiring | 4 AWG power and ground leads |
| Dimensions (W x H x D) | 10.75" x 2.13" x 10" |
| Weight | 7 lbs, 3 oz |
| Optional Remote | Alpine RUX-KNOB.2 (sold separately) |
FAQ
Do products purchased from San Diego Car Stereo come with a warranty?
Yes, all products come with a 1-year manufacturer warranty unless otherwise stated. This covers any defects excluding physical damage.
Are these products brand new?
Yes, every product we sell is 100% brand new, unused, and comes in original manufacturer packaging unless clearly marked otherwise.
Do you offer installation services?
Yes, we offer professional installation services at both of our San Diego Car Stereo locations. Our expert technicians have over 50 years of combined experience to install all of your car, marine, or offroad audio needs. Stop by or give us a call to schedule an appointment to get a quote in person.