Prior to picking my boat up I was searching high and low for stereo installs on non-arch Formula 330's and couldn't find anything. Since then the boat has made it home and I've significantly upgraded the stereo system. Figured that someone else may be in the same spot I was two months ago so here are some photos of the install. All of the speakers are Polk audio. The cabin, cockpit, and transom are all setup as different zones with their own power switched for amps and volume controls. Installing the sub by the rear bar was easy with plenty of clearance. The driver seat sub had absolutely zero clearance or room to spare. If you want to put one in that spot make sure the sub you get doesn't require a hole larger than 9 1/4". In addition the driver seat sub required modifying one of the trim boards which is not complete in this photo. It also required moving the light a few inches.



One 4 channel powering the 6x9's, one 2 channel for the subs, and the last 2 channel is for two transom speakers. All of this is tucked away in the cubby under the stairs. Not sure why my phone distorted the photo but everything is square.


The wall this sub is installed in has WAYY to much reverberation. To fix that and make the sound come out clear I pulled the sub out and fiber-glassed in 4 panels between the wall and the hull that make and enclosed box for the sub. It was a PITA but sounds amazing and the flex goes away. Not showing off my fiberglass work, especially when it was done through a 10" hole but it gets the job done and since no wood was used it should last a long time.

Can't go wrong with rockville. I'm running a rxm-t2 on 8 fosgates and it is barely cracked on. Great sql.

Nice install, I like how you did the sub in the back.

What did you do in the factory locations? Just new 6x9's?

Yes, the factory locations got new 6x9's. We added two 6" speakers on the transom as well and they have their own volume so we aren't cranking tunes out the back through channels or while docking.