If you decided to go PPI you'd be at this amp. This is still a superb model. Not the current garbage of MY04+ stuff:
http://www.discountjungle.net/precpowpc4ch.html

 

Oh crap!!

I didn't catch your last 2 posts before ordering.

I just ordered the Alpine MRV-F540.




Well, hopefully the sound will be decent.

I also ordered Modifry's wired DCI.

Now, I've got to choose some rear speakers, and read through darknight's wiring thread to see if I can make a shopping list for wiring supplies.


-Pete

 

I'm thinking about Infinity Kappa 42.5i speakers for the rear, but I would prefer 52.5i size.



I've searched and only found one reference to the 42.5i speaker fitting in the rear, but I'm prety sure about it. I found a thread where xviper mentioned that the maximum magnet width is 4". The cutout diameter for the 42.5i is 3-5/8" (93mm) and the magnets are smaller than that.

The real question is WILL THE INFINITY KAPPA 52.5 SPEAKERS FIT IN THE REAR?

Cutout diameter: 4-11/16"
Mounting Depth: 2-1/16"

I know that depth is not really an issue with the rear speakers, I just put it there for reference. I think the magnets may be small enough, but the speaker housing on the rear is large (I can't find a pic to post).


-Pete

 

That alpine amp isnt good for the Qs. You need more power.

 

The website states:

Power Range
90-170 Watts

 

I agree as well. I don't know what the Crutchfield return policy is (can you send back an open box after trying the amp out?) but I would try to get a beefier amp. You spent a lot on speakers; make sure they get enough power to sing for you.

 

Why not get MB Quarts for the rear as well? You can get a good coaxial set or get the Premium 5.5s instead of the huge QSDs. In general, I like matched sets of speakers. The MB Quarts are quite different than normal in the way the sound. You may want to listen to them for a while before you pick a rear speaker (and in my car I don't think it's too necessary).

 

Help me out here guys!

Could someone break it down for me?

How many watts will the HU and amp put out to the speakers???

HU Specs: Max power 52W x 4; 23W per channel minimum average continuous power into 4 ohms

Amp Specs: Max Power (EIAJ) 150Wx4 (4ohm; Stereo) 250Wx2 (Bridged 4ohm

 

Hey Kodokan,

If you are going to use the Alpine amp then you wont be using the power from the radio. Same applies vice a versa, you can only use either the amp in the radio, or your Alpine amp you bought, but not both. So when you hook up the amp, basically you are bypassing the power from the Headunit.

I think in your amp's case, you can bridge the front and the rear for 200 watts. So you would essentially be converting your amp from a 4 channel to a 2 channel, and YOU DONT WANT TO RUN 200 watts rms to those MB Quarts, not to mention by bridging it you might be dropping it down to 2 ohms (not sure on this).

That amp you got is not optimal for the speakers you bought. You should at least be looking at 100 watts rms per channel. Just like Flithcroft said, you should check out the Sound Stream Van gogh 500.4, 125 watts rms per channel. Very nice amp, yet I am a bit partial since I own one. You can pick one up for about $400, I think I paid that much for mine.

Honestly If I where you, I would skip the speakers in the back, use the front two channels of the amp to power the door speakers, and bridge the rear channels for a sub in the back. I am running Focal Utopias in the front and I have more than enough sound with just the door speakers and the rear fill of the sub.

By the way, post some pics of your system as you go along.

 

Pete, I don't know what you're looking at for those numbers. The Alpine amp is 80 watts RMS x 4 channels at 4ohms. You want 100-150 watts RMS to your QSDs.

In general, you're looking for 12v power at 4 ohms of resistance.

http://www.crutchfield.com/S-hkVXsk7qICW/c...sp?I=500MRVF540

Did you buy that from Crutchfield like your picture says?!! $600! The Soundstream Van Gogh (125 watts x 4 at 4 ohms) is a much better amp with 50% more power at 2/3 the price. I know Crutchfield ships a UPS return label all filled out for you. Get ready to peel and stick

You won't use the power from your headunit. That Alpine amp is probably about 13" long x 10" wide, right? How great do you think the power from a headunit is going to be when they also have to fit a CD player and a computer board in there? That's why my headunit has no power output. They're all garbage for high end components so there's no need to have power in high end HUs anyway.