Thats for real. It wasn't a normal preout. It was a cord that went to the amps. I cant real explain it. It was only available on the RF decks.

 

I know Denon made a deck for RF which was around 8V, just never heard of a deck having an 18v preout. Maybe you're talking about something different. I run an Eclipse H/U which has an 8V preout that goes to a Zapco SLB-U which will increase preamp voltage, balanced. I love the Zapco stuff.

http://www.zapco.com/prod/symb_prods/slbuFrame.htm

 

I have a set up like dieselminded, Two 15's sitting on the back seat....not much room for guests, but the girl doesn't mind. Plus...I've got a long bed, so everything unimportant goes there. I can't imagine life w/o a big thump!!!!

 

i have a sealed box with 2 12" rockford P1's on the back seat with a pioneer 760w pushing them, thumps hard on the inside, i get barely any sound outside...nothing like you hear with the little cars...i should port my box because i have too much airspace for a sealed box...and the subs are actually hitting to hard

 

here's what I built for my 02, with 2 8" fosgate ported

https://www.dieseltruckresource.com/...NOseat-med.jpg