[nostradamo]

OK, Head Unit has no high pass crossovers.Played with fader ect-nothing.I only hear minimal low frequencies. Woofer on tube doesnt move.Rear speakers have more bass. I bypassed tube and kept rear car speakers on and i get more bass from 5 1/2" 's !! I am stumped and going to return tube. BTW I purchased it through Tech for less as refurbished. If that means anything. I left message for tech support.Thanks for all your help, Mark