Okay so I have 4-ohm speakers in the front and rear, but a 2-ohm polk sub. I need to get these suckers amped, or at least the front components and sub.

Would a 5 channel amp fit the bill? Would I be able to run the speakers at 4 ohm and the sub at 2 ohm or does everything on the amp have to be either 2 or 4?

 

I have the Hifonics zeus 8thousandsomething. It has 5 channels, 1X300 into 2ohms and 4X55w 4ohms or 4X110watts 2ohms RMS. I really like it, it is a great amp. I'm running my speakers and sub off it now.
EDIT: The reason I have the five channel is because my hu won't out put anything through the speaker wires. So either I run just the fronts and no backs or amp them all.

 

While they do make good 5 channel amps, I would highly recommend just doing a 4 ch. and a separate class-d 1 ch. amp. It comes out quite a bit cheaper (generally) and you generally get more power on all the channels when they are split up especially when you look at the power/$$$. I'm not saying good 5 channels don't exist, they do, but typically you will pay more to have it in one unit.

You can however run different channels on a 5 channel with a different load (ohms).

edit: and to the above, either

A) get a head unit w/ 3 outputs (F R & Sub) so you can control everything on the head unit (I don't know how you can live w/o this :p).

B) use the line out on the main amp and run it to the sub amp (assuming the amp has them)

 

ya you can do that and on some you can even run them @1ohm for the substage. I would look on ebay and see if you can find any Memphis Belle's. Great amps for the money and put out plenty of power.

 

Is there an amp out there that can run 4 ohms to the front speakers and then 2 ohm stable to the sub?

Edit: Would this work? http://www.crutchfield.com/p_113X600...0F.html?tp=115

 

Do you mean bridge 2 of the channels for the sub and use the other 2 for the two front speakers? I'm pretty sure it will work. Lets let someone else confirm though.

 

your better off getiing a four channle for the speaker and a mono for the sub,
your going to have better results that way.

 

Okay so if I did that would I run a 4 gauge wire into a distribution block and then an 8 gauge to each amp?

How do I run two remote turn on wires from the head unit? Do I just run 1 and then splice the other?

 

4 then 8 would work, I've done it. But if your pulling a lot of power, I might even go thicker. But that would work fine.

As far as the turn on, ya you can just daisy chain them (run one to the first which has two wires, the second going to the second amp).

 

yes,
just as he said i have that done in my civic now,
i have a 1000 watt 2 channle and 400 watt 4 channle
im runing a 4 guage from batt into block 4 guage into the 2 channle and 8 into the 4channle ,
do the remote just as he said.
remember if you power it with a 4 guage ground it with 4 guage.