this is probably a really dumb question but i just want to make sure before i decide:

is there any avantage to running an amp at say 4 ohms vs 8 besides trhe power difference? Say i have an amp rated at 600 x 1 at 4 ohms and i run it at 8 ohm instead so it puts out about 350-400 x 1, is that bad for the amp in any way? i know if is stable at 4 and 8 ohm and at 2 ohm also if you are careful with it but i just wanted to nkow if there is any advantage to going with 4 ohm instead of 8.

Thinking of trading my eDi nine.2 and 110v.2 (backordered) for a nine.2x (350x1 at 8 ohm) and a 10w6v2 (run at 8 ohm). def wanna stick with eDi amp so it matches the other one i have

comments?

thanks

 

I think the only real thing is the power. Bascially, the lower the ohm the more your amp has to work. So theoretically you may have to replace fuses more and your amp (and sub) life expectancy lowers. When I played with my audiobahn, I noticed a little sound difference, but hearing that depends on how good your hearing is!

 

A lower ohm rating (resistance) will require less gain on the amp to achieve the same level of output. Another way to look at it is for the same gain level, the 4ohm will be 3dB louder. There's typically no hard running an amp to a higher ohm rating, but exceeding the amps recommended rating can fry one fast (ie - if it's rated to 2 ohms don't go any lower).

 

Your SQ will increase with a higher ohm load. Also, at the higher ohm load the amp will work less, leaving you a cooler running amp. They higher the ohm load, the less power the amp will produce.

Amp gain has nothing to do with the impedance (not resistance) of the speaker(s) attached to it. The amp gain is used to match the signal output to the amps input. If your head unit uses a 4V output you would want to set your gain to a 4V input to advoid clipping and unwanted distortion.

LS350z we'll have to get together sometime, I'm only 45 mintues North of you in Dayton!