Front: Infinity Kappa Perfect 6.1

Rear (behind seats): Infinity Reference 5 1/4"

I understand that the fronts absolutely need an amp and that the rears sound better with one, so what is a good amp for this setup?

 

How about an Alpine PDX 4.150?

 

I've had my Alpine MRV-F345 for almost 2 years now and has been great for me, can't go wrong with Alpine AMPs, just as a piece of advice from a guy that just blew a set of MB QUARTz just make sure you match power correctcly try to get speakers of greater wattege than your amp, OR an Amp with less output than your speakers can handle, and set your gains properly, if not they WILL blow maybe not right away but will over time

just my 0.2 cents

 

Another vote for Alpine, from me...

 

Well, the Kappa fronts seem like they'd need about 100watts, but the reference rears can only handle up to 45watts. If I get an amp that puts out 100w per channel, won't the rears explode?

 

no, you can adjust the gains on the amp for the rear channels only so that doesn't happen. Also the fade control on the head unit.

 

Generally it's best to buy an amp that is over powered for your application. Use the gain to adjust it to your application, the amp will run cooler and more stable, thus longer and you won't have to upgrade the amp again should you upgrade your speakers later, nor will your speakers be underpowered.

 

Good info, thanks. Any suggestions on a good 4 channel amp to power these?

 

I apolagyze for giving wrong info on amp/speaker power, i was basing my comment on personal experience though, i stand corrected
but i was still right on the gain part

 

Me, I like audison amps. But, that's looking solely at sound quality with little regard to price.

If you want the best you can buy, go for Genesis, Audison, etc. If you want less expensive and great quality, go for JL slash series or Alpine. If you want something that's just going to be loud regardless of sound quality and you're willing to sacrifice build quality of the amp, there are those as well.

The question really becomes how much are you willing to spend on this amplifier? Seconded by how important is sound quality to you?



EDIT:

And gabster, yes, you were spot on with the gain. Some people like to adjust it using a multimeter. I prefer to set my HU to approx 80-90% of the peak volume setting (on an Eclipse, approx 60-65), and then adjust the gain on my amps so there's no clipping or distortion and everything is balanced (sub vs mids vs highs). Takes a bit of a practiced ear to ensure no distortion or clipping, but it's far more accurate at finding the max your speakers can handle.

The output of the amp is going to change depending on the volume input from the HU. Using a multimeter is a good starting point, but from my own experience, my 85W/channel Audison causes my Diamond Hexes (with approx 150W rms power handling) to clip well before the gain is fully up.

Besides, it should be about sound quality. Who really cares how much power is being pushed to the speakers if they sound like crap?