Speakers / Amp / Confused?

[bmnk]

Ok, So I'm about to wire up my 52' truck. I have:
"Secret Audio" from Custom Autosound

A small amp

Set of 3" speakers for the center of the dash

Set of 4" Polk Speakers with 45w RMS - 4ohms

Set of Alpine 5x7s with 75w RMS -4ohms.

The Amp power output is 50w RMS x 2 @ 4ohms
75w RMS x 2 @ 2ohms
150w RMS x 1 @ 4ohms

My plan is to hook the small 3" speakers to the deck -- Then hook the 4" and 5x7s up to the Amp in parallel.



If I'm thinking correctly the speakers hooked up to the amp will then run at 2ohms, and will be powered at 37.5w RMS.

My question is 1) am I right, or completely wrong?-- 2) would I be further ahead to only power the Alpine 5x7's with the amp?

Any help advice would be great.....

[thelowone]

I would just run the 5x7s off the amp for the best sound, or go with a 4 channel amp if you want to run both sets of speakers.

[Gobbles]

Originally Posted by thelowone

I would just run the 5x7s off the amp for the best sound, or go with a 4 channel amp if you want to run both sets of speakers.

X2 I would just get more channels!

[jimmydean]

It would work that way, but your 5x7 might be underpowered. I would either get a bigger 4 channel, or another small amp.

[bmnk]

Well I ended up taking everyone advice and running the 5x7"s to the amp, and running the two smaller set of speakers off the main deck.

It sounds great.