Hmm, stereo guys need to chime in. I'm new to this stuff. But, if you add a sub it cuts the ohm load in half each time. (I think)

So one 8ohm + a 2nd 8ohm=4ohm +a 3rd 8ohm= 2 ohm plus a 4th 8 ohm = 1ohm total.

Yes or no?

 

no...

 

How does the math work on that? Ie...what if there were 2 four ohm and 2 eight ohm speakers in the chain?

 

no idea how the math works, I just use diagrams when figuring that crap out. And theres no diagram for 2 4ohm and 2 8ohm subs so I dunno lol

 

lol. oh well. I have 3 12's in my truck and was running a 1/2 ohm. My amp didn't like that. Popped the 40A fuse almost instantly. I had to rewire 2 of the subs to be at 6.6 ohm and then the 3rd was at 2 ohm. Ended up being 3.5 ohm total. Threw in an 80A fuse and called it done.

 

i have had no problems except not enough bass!!!!!!!!!!!!!!!!!!!! thinking about getting to captains chairs and building a console with either 3 w7's or 3 solo barics

 

I don't have that problem. I think I saw my windsheild flex when it hit and all the windows were up It sounds like you are talking into a fan because your voice vibrates.

 

yea my buddy had 12 w0 12's in his tahoe it was crazy loud

 

I need to see pics. No way In hell you got 1 cu ft each behind or under the seats.

 

The speakers are wired in parallel therefore you take the reciprocals of the resistance of each sub and add them, the reciprocal of the sum gives you the total resistance.
ex. 1/8 + 1/8 + 1/8 + 1/8 = 0.5 = 1/2
= 2 ohms

if there were 2, 4ohm and 2 8ohm it would look like this
1/4 +1/4+1/8+1/8 = 1/.76 = 1.32ohms

I was thinking about putting two of those shallow Premier 12's behind my back seat in my ecsb, i think there is just enough room for them since they only require 4" of depth, might have to make a fiberglass box to get the airspace. I have two 10's under the seat allready. Theres not a lot of room under there for 12's again unless you went with a fiberglass box. 10's fit nicely and sound better