Ok, I got my new replacement amp back finally. Amp has a sensitivity switch between .1-2 volts and 2-8 volts. My new headunit has 4 volt preouts. When I try to set the gains using the 2-8 volt setting I max the gain and never reach 40 volts (1600 rms). I get around 12 volts on the dmm. When I switch it to the .1-2 volt setting gain goes about 1/3 of the way up and hits 40 volts. Will I damage the amp if I just leave it at the .1-2 volt switch position? And any idea's on why if I have 4 volt preouts I can't reach 40 volts on the 2-8 volt setting?

Right now everything is hooked up but I have the amp off on the headunit. Waited 3 weeks to get the new amp back so I am really needing to violate my persons with some violent bass!

Its a Kenwood KDC-X794 headunit and a Soundstream Rub1.1600d amp. My old headunit before the amp blew had 2 volt outs so I didn't ever think about it.

Any help is much appreciated. I tried to google it but didn't come up with anything. Maybe I was just wording it wrong though.

Edited August 10, 201015 yr by Teampapi79

question answered off site... feel free to delete mods.

Mind posting the answer so others who search and have the similar issue can learn something

Answer I received is leaving it on the .1-2 volt switch is fine. That the head unit isn't putting out a true 4 volts. Which I am going to verify tomorrow with a dmm

Your head unit may only put out 4 volts at absolute maximum into a perfect load, so I wouldn't sweat it....