I was wondering if someone here can give me some, or some more, advice as to this amp. I know JBL makes some good stuff but I can get this amp for $150.00 and I was thinking of useing it for a subwoofer amp. I found out that it is high passed at 50hz and was wondering if it would be able to be adjusted down to 20hz. I do need a center channel amp so it might just be used for that but if it can be moded for a lower frequency easy enough I would use it for the sub. Also if any one has opinions about JBL amps in general I would love to hear them....Thanks....:scratchhead: Amp info..