LOUD98ES said:
I'm finding several 4 channel amps that are rated both at 4 ohms and 2 ohms per channel. Are there any midrange speakers, the 6.5's and 6x9's that'll run at 2 ohms? The amp I have in mind is the KX350.4, it'll run 60x4 RMS @ 4 ohms per channel, or you can go 90x4 RMS @ 2 ohms per channel.
Heres the skinny on this......
Chances are that you will not find any 2 ohm speakers for your system. Thats OK. even though the amp puts out more power at 2 ohms than 4 ohms, its no big deal really. The difference between 60 watts and 90 watts as you stated translates into a mere 2 or 3 Db increase in output from your system, that means in that its not that big of a difference,.........(unless its an SPL system!)
If you really want to run the amp at 2 ohms per channel, the only way to do it is to run 2 sets of speakers per channel, not very realistic....
Now, if you bridge the 4 channels and make it a 2 channel amp, and run a pair of 4 ohm speakers, the amp will see a 2 ohm load per channel. that is pretty much how it works on any amp. You run it in "MONO" and each channel see's half the impedance of the load....
Just run it at 4 channels ,,,,,one per each corner of the car, you will be OK and like it! (if anyone tells you too put a 4 ohm resistor in parrellel with the speakers to drop the impedance and get more power, PUNCH THEM IN THE HEAD!!!!!!!)