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Alpine MRV-M500 Mono V-Power Digital Amplifier
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- 500W RMS X 1 (2Ω, 14.4V, ≤1% THD+N)
- 300W RMS X 1 (4Ω, 14.4V, ≤1% THD+N)
- Evolution To Class D Digital Platform
- New Snap-on Terminal Covers For Easy Installation
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500W RMS x 1 (2, 14.4V, 1% THD+N) 300W RMS x 1 (4, 14.4V, 1% THD+N) Same power in a 40% smaller chassis Evolution to Class D digital platform New snap-on terminal covers for easy installation
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I settled on a RF dual voice coil 12" subwoofer, a B-Box sub box, and an Alpine 500 watt RMS @14.4 V input into 2 ohms impedance.
Being an audiophile for decades, I felt that these components would perform. And perform they did. Seamless, flawless, acoustically paired. Everything came together and matched the stock audio system perfectly.
Sound quality is good, I'm sure it could be better but I used the included speaker level input harness and retained the factory radio. That being said, ͏m͏y favorote part of the amp is that you don't need to run a remote wire if you use the speaker level inputs, the amp automatically turns on when it senses speaker voltage. Very usefull if you plan to add a subwoofer to a factory radio, no need for LOC and finding a fused output for a remote wire. It does it all for you.
NOTE: the instructions recommend that if your power and ground cables exceed 1m in combined length, then you should run 2ga wire to a power distribution block, then 4ga to the amp up to a meter. After doing the math, I have concluded that this is only helpful or necessary if you’re running at 500W RMS (2 ohms). If you are running it at 300W RMS (4 ohm) like I am, this is completely unnecessary and you should just run 4ga for power and ground.
The crossover in looks to be good, but its missing two key items, a 0/180º phase switch, and it would be nice to have a switch to completely disable the low pass filtering. Why? Because most decent head units now have full active crossover networks built-in, and being able to disable the amp's network completely would be a good feature to have for those who are already running one through their stereo, or better, a dsp unit or likewise.
Neither of these are really deal-breakers though, and for what you get at under 200 bucks, its a steal!
Wiring connections are solid and feel firm, the amp's size is small enough to fit under most seats and other small spaces, and after an hour of playing/tuning at high volumes, the amp wasn't even warm! Wish I could say that about the sub, as it was definitely warm at the center dustcap (not dangerously hot, just noticeably warm)!
My last Alpine amp experience wasn't a great one, with a 6 channel V-12 or something like that, the amp didn't make it 2 years with a very modest setup, so I'm cautiously hoping for a positive experience with this one. Of course, I'll update if I do end up with issues!
The amplifier did not come with a birth sheet. Or at least mine did not.
There is no infrasonic/subsonic filter on it.
That's honestly it. Just something that throws me off a little bit, the amp has a built in -24db octave and no infrasonic filter. It just seems like the amp was made for a sub in a ported box with that type of slope. But enough of the gripe. I do want to see this amp on the SMD AD-1 because I wanna see if Alpine stands to their name. Other than my gripe, I love this amplifier. Does get warm but that's because of the heatsink doing it's job and because it's hot where I live. So I'm not too worried about that. 5 Stars.