Originally Posted by
Tedmond
travis is right. however if you mismatch your voltage input, you will burn the amp low freq inputs. often they are rated for 4.2volts max.
I do know that most amps can take an average of about 10-12 volts of signal input. This is you average amps like Alpine, Kenwood, Rockford Fosgates, JL Audio, and amp companies like this. When you look at the owners paperwork of the amp that you are useing it will tell you what the amp can take.