Hi, i have a JVC KD-R626 headunit it works fine apart from the fact that the sub i have connected to it sounds like the gains down somewhere but i have the head unit on low pass 125hz +8 on the subwoofer gain the amps on max gain and no pass frequency cut out ive checked it with a different amp no difference ive also checked the av cord to see if that was the problem is there sumthing im missing or is ther a chance the subout is stuffed iv even tried using the front pre out that didnt make a difference is it maybe im use to 4v pre outs and ther is nothing wrong at all with these 2.5v preouts?
