I have an Alpine headunit not sure of the model at the moment.

I have all 4 ohm speakers hooked up rite now.

If i were to hook up in exaple two 8 ohm speakers.. Would i mess up my headunit fom the diferent impeadences?

Maybe a noobish question but i've never tried it.

Thanks for the help.

Exactly how would you be hooking up the speakers? Series? Parallel? Series-parallel?

Parallel

Like two 4 ohm on front and two 8 ohm on the rear? That should be fine.

Lets say i have a 4 ohm speaker on the front door.. Can i hook up an 8 ohm parallel to that 4 ohm speaker? And do the same for the other front door?

Your going to end up with a 2.667 ohm load at the HU.

http://www.bcae1.com/spkrmlti.htm

Would you know if my HU be stable down to that impeadence?

I looked on the manual and didnt say anything about the impeadence it produces the power at

I wouldn't do it. I doubt the HU is meant to run anything below 4 ohms.

Alright thanks for the help guys. Ill just replace speakers then.