Can someone tell me the difference in quality and sound between a 2ohm 6x8 and a 4ohm 6x8 please? Thanks.

 

There will be no sound quality difference due to ohms. It is simply a resistance, 2 ohm is harder to drive than 4 ohms. Keep in mind a short circuit is zero ohms.
If you are hooking to a RADIO (no amp) or the stock Ford sytem (500 or 1000) go with the 4 ohm speaker. If you trying to get more power out of a 2 ohm stable amp, then the 2 ohm speaker may make sense. However, with that type of amp, you'll likely get more power, but what they don't tell you is that at 2 ohms, distortion and damping factor figures are terrible. But with rap or bass heavy music - that is not an issue.

Basically stick with the 4 ohm speaker and you'll be far ahead in 99% of any situation.

 

It should be added that amplifiers have a minimum impedance. So wiring 2 ohm speakers to an amplifier with a minimum of 4 ohm will probably blow up the amplifier.

 

oops I forgot to post the amp, sorry guys. It's an Inifinty Reference model, 520/4.

http://www.infinitysystems.com/caraudio/pr...Ser=REF&Cat=AMP