Hey guys, I just put in a c500.1 to power a sr124-dvc sub. Being that they are both Polk, I am thinking people on here would be able to help me set the adjustments on the amplifier. Firstly should I use the pre-eq button on the c500.1? Also how should I go about setting the subwoofer amp gain? There are subwoofer level as well as bass controls on my alpine cda-9885 that I am using with the amp and I don't know the proper way to adjust the gain on the amp. I know for the stereo amps you turn the volume 3/4 of the way up then turn the gain up until it distorts and back down a little. Is it the same procedure for the subs? I should mention that this is in the trunk of my acura rsx type s and the sr124 dvc is in a 1.21 sealed box. I am using the pre-eq button now but somehow I think that that button is only to be used with the momo subs. I think I need to set the crossover and bass control setting on the c500.1 manually. I am confused and need help.