So I got the Polk db6501 and the Polk db691. They are both rated for 100w rms @ 4 ohm. Now I dont want to go with a 4 channel amp because those cost more. So I can bridge the 4 speakers right? Like the two on the right and two on the left or rear and front? What specs would I need out of a 2 channel amp? For example: 200w rms x 2 @ 2 ohm

I just dont understand what the specs are after bridging...

 

yes, you can bridge the right and left sides together, or fronts and backs together. 4 channel amps really arent that much more, but you will have to look for 2 channel amps that do about 150 -200 watts per channel at 2 ohms. It will be considerably easier to find a 4 channel that will do that with two or the 4 channels bridged at 2 ohms.

Kicker Zx350.4
Rockford Fosgate T4004

 

How do you like your Kicker Zx350.4 ?

Some people said it just sounded better when bridged too...

 

Also, if my speakers are 4 ohm could I do the following:

200 RMS x 2 @ 4ohm

Someone told me the lower the OHM the more noise you will get so you want to keep running it at 4 ohm. If I did that above would I be fine?

 

The lower the ohm, the lower the resistance. Doesn't really involve noise at all. Getting power at a lower 2 or 1 ohmsis better than at 4 or 8 ohms.

 

yes, the lower the ohm the lower the resistance, true. but the other two statements are totally false. More noise is introduced at a lower ohm load,a nd amps are more effecient at a higher ohm load. amps are happier at a higher load. a higher ohm load will produce a cleaner ouput, less heat for the amp. Keep in mind, that doubling your power only increases your output (sound) by 3db.

 

ya, I wish I had an amp that did 2500rms at 8ohms, that would be sweet.

 

i have an amp that does about 1800 at 4 ohms.