i know this has been beaten' into the ground but figured I'd get some advice as well.
I'm looking to add a sub to my current sound setup. currently i have the following (sorry for not knowing specs on everything as she is still shrink wrapped and i don't recall everything that's in the boat to the exact spec):
Alpine head unit (installed by me)
MTX amp (4 channel i think, can't recall model number off hand)
8 Clarion speakers (6.5 i believe)
i would love to add a free air for space and mount it under the kick panel of passenger seat. where the passengers feet would be. the backside would be under the front bow seat. I've always done all my own car audio and have always build boxes and never heard a free air but would hate to loose storage space, especially for those lake Powell trips. 8 days on the water with all beer/gear eats up huge space.
I've thought about this amp and free air setup due to $, but worried about the get what you pay for factor.
http://www.google.com/products/catalog?hl=en&q=kenwood+marine+subwoofer&cid=55978799740295957&ei=2Xi7S9X2CJeIxQWo_qyvCA&sa=title&ved=0CAcQ8wIwADgA#pon the 2001 horizon my back seat does not have much depth to it under the seat so worried to put a sub in there, but maybe it could be done with a box and work i dunno.
my other worry is the current sound is ok. i have to get the amp just right and head unit adjusted just right for no distortion from bass at high levels but then after a couple hours the amp will shut off from heat. all due to running 8 freak'n 6's i'm sure. still don't know why they overloaded this little amp with 8!!!! this was in the boat when we got it. i'd be down to take 4 off that amp and maybe on the head unit to save the amp some wear or even gone all together. problem with that is the location of 4 which are on the tower and made to go inside the tower. so to remove these I'd still have to leave them for "looks" or plug the holes somehow. you really don't hear these unless you are in/on the back of the boat.
other problem is there are no bow speakers and you can't hear anything up there!
thanks for any and all advice. I've been poking around in the audio section for sometime but felt some more direct assistance might help me realize what might be best at a minimal cost.
picture of the tower speakers:

just basically looking to get some thump in the boat!
thanks all.
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2006 Nissan Titan SE 6" Lift
2000 Four Winns 190 Horizon 5.0GL

