Lookin at these 2 amps to power my 10" Polk MOMO SVC. I like the specs on both and like both brands. From what I can tell, the Alpine amp runs cooler since its a sub amp, but has more THD and lower signal to noise ratio, which means??

Alpine MRP-M650
http://www.onlinecarstereo.com/CarAu...roductID=16412

RF P325.2
http://www.onlinecarstereo.com/CarAu...roductID=17091

Opinions & your $.02?

-Red

 

Alpine no doubt. D-class mono-block, that is what you want pushing your subwoofer. Alpine makes better amps anyways.

 

X2...

 

The only thing is i would do a larger 2ch for your 4 ohm woofer. Maybe a RF 500.2 or something like that. But NOTHING wrong with RF

 

Uhh... NO.

Do you even understand what a D-class is? And a mono-block for a SVC 4 ohm??? NO.

4 ohm use a 2ch because you can bridge it and get more power! Using a 1ch for something like that is a waste because it puts out maximum power at 2 ohm or lower. Not 4 ohm like a 2ch does.

And a D-class is just a switching network. It either has one rail on or off. Its more efficient... Yes. Better quality... Maybe. Due to the design of the D-class instead of the A/B like the RF, you are guaranteed more THD. Will it matter on a sub as much... No.

 

sorry :o i didnt know which subwoofer he was using, didnt consider his resistances. but as far as pushing 1 subwoofer in lower impedances, you usually want to go with a mono-block over a bridged mosfet amp. and yes I do know what D-class circuitry is...

i used to run a 4ohm subwoofer with a bridged 2channel amp and it was fine.

just a simple misunderstanding, no need to bring out the flamethrowers.

 

If it sounds like im being an ******* 95% of the time Im not. I just seem to be... And if you feel I am being one you are more than welcome to send me nasty pms with more stars than the night sky in Kansas.

So there werent supposed to be flamethrowers

 

no problem, its a lot easier to accidentally sound like an internet tough guy then one might think, happens to us all.

i would never question you either, i know you know your chit about mobile audio im just trying to help people out and even i make mistakes.

PS. build me a box

 

[PS. build me a box [/QUOTE]

You mean a casket for that audiobahn...

Just kidding...

 

this thing comes with the casket built in. Dont believe me?............





i will be switching to two 10s shortly, either IDQ v.2s or ED k11.2s. buuutttt someone needs to build me a box.

 

Give me a holla and it might happen....

 

Im going to give one a try on my own, but am "the new guy" at custom box building.

Wish me luck...

 

Well I got the alpine, hooking it up now but having problem with the wiring.

See Post here:
https://www.f150online.com/forums/sh....php?p=2913493

 

Read what I wrote earlier. You bought the wrong amp for the sub. You needed a 2ch instead of a mono. All you can do is wire it up pos to pos neg to neg.