mastermick70 said:
right so if i get an amp for the front components and a seperate amp for the sub would that be better?
Depends.
How much umph do you want?
It's a lot easier to fit just one amp, if you get one that does say 4 x 50 rms or 2 x 200 bridged, then that'll be ample.
mastermick70 said:
Why is it not a good idea to amp the rears?
Like Custard said, "soundstage" or the image of where the sound is coming from, like being at a concert, you face the band right? Sub bass is non directional so it doesn't matter where the sub is, but for the mid - upper frequencies, it does. Fit the biggest speakers you can upfront.
I've tried speakers in the back
personally prefer it without.
mastermick70 said:
Also is there any particular size subs recommended for A punto due to the size of the car?
Not really. It depends on the sound you're after. Generally, 10" subs are punchy, with good sound quality, 15" subs are bassier and 12" subs are a mix of both. Generally. There is also the enclosure to consider too, sealed or ported, again, generally, sealed gives better SQ and ported will be louder.
For your musical tastes, a 12" sub in a ported enclosure wil probably do the trick.