Alpine MRD-M500 or Alpine MRP-M650

[notw 10+ year member]

I am looking at buying a MRD-M500 amp. I also found a great deal on a MRP-M650 though and now I need the help of some pros!

Everything about the MRP-M650 sounds better(except the analog controls) but I compared photos of both of them and the MRP-M650 has tiny little power and ground inputs...

Am I hallucinating or is the amp seriously lacking in its inputs?

Maybe I am just wrong but here are the pics: 1st is the 650

Click to read more...

 

[simpsonbuck 10+ year member]

I have a Alpine MRP-M650 that I got barely used off of Ebay for 128.00 shipped.

Not a lot of frills but clean,efficient rated power.

Just get a good h/u and you're good to go.

I ran a digital Alpine a few years back(not sure what model) and it was great. Never overheated even during the Texas summer.

 

[knils 10+ year member]

no your right, check out the size difference on those power and ground inputs vs the ones on the 500. but you wouldnt need anything bigger than 4 gauge anyways so I guess it doesnt matter

the rcas and the low pass and gain are on the opp side not under a cover tho, they are flush mounted to the side

but correct me if I am wrong the D is all digital right with those buttons and the screen? vs the mrP I've heard people speaking about the old mrD-m1000 vs the new P one, and the old D one crushing these P ones... I don't know much else about the details and I really dont know the difference, something to look into tho i just dont have time

 

[hoxie08 5,000+ posts]

btw on the first pic the rca's and controls are on the OTHER side...

 

[sks_lex 10+ year member]

I used to run a MRP-M650 to 2 CRVs. Never had one problem with it, no overheating...nothing. The terminals are very small, my 4g wires were very hard to get secure.

 

[notw 10+ year member]

Thank you for giving me your insight fellas.

I believe I am going to go with the M500 because I have a heavy gauge wire set and I am not paying money to have trouble getting the amp to work with what I have.. and I really want the digital tuning feature.

I know that the tuning controls for the M650 are on the opposite side shown in the picture. I was just saying that the input and output power terminals are oddly small and I wanted to be sure that I was correct in my judgment of what I saw in the photo comparison.