Sub for a 200

[DealsGapCobra]

I spent a few hours yesterday trying to design a sub box for my SN 200 but can't seem to find a way to pull it off without losing far too much storage. I am now considering doing an install like in the Sport 200 with a Polk MM (maybe 12" ?) mounted in the walk-thru. Have any of you listened to this system and is it reasonable? I am not looking for serious bass but the stock 6" polks definitely need some help down low.

What size amp should I be considering to drive the sub?

Thanks in advance.

[ClemsonDave]

My '11 200 (DD) has the upgraded stereo with the sub/amp. Like you said, the sub is mounted in the walkthrough. I was a little concerned b/c I've always mounted subs in a more confined space. I gotta tell you though... this thing rocks! With a skier in the water about 25' away, they can 'feel' the sub through the water.

Even with all that in there, I can still fit two skis, a couple spare buoys, tool box, etc.

[EarmarkMarine]

The pass-through location is definitely workable. But if you are going to use an infinite baffle application (no enclosure other than the large port locker compartment) then absolutely avoid the Polk woofer as its not the IB type. There is no such thing as a woofer that is a jack of all trades unless it is a master of none. Instead, use the JL Audio 10-inch M series infinite baffle marine woofer. Its by far the best IB woofer on the market. Use a minimum of 200 'honest' watts into this 4-ohm subwoofer. A JL Audio JX500.1 monoblock would do the job nicely. Its a little excess power at 340 watts into a 4-ohm load but is a good choice.
There are a number of installation and tuning issues where you would approach an infinite baffle woofer a little differently. But when executed properly there is no acoustic reason why the right IB woofer can't do an impressive job.

David
Earmark Marine

[DealsGapCobra]

Thank you all for the advise. I ended up with a JL Audio 10" IB sub from Earmark with a 200w Polk Audio amp (it was the perfect size for mounting) and am very happy with the results. Here are a few photos of the installation. I still need to do some clean-up on the wiring.

I will say that I wired the speaker and had it on the floor of the boat prior to installation and it sounded very weak. I was disappointed but decided to install it anyway and see if it would do. When installed it sound excellent. I noticed that it is great with the passenger seat closed and not quite as good with it open. I read a post by David (Earmark) on anther forum saying that the front and rear of the speaker need to be isolated from each other which explains why I was disappointed with the premounting test!

Anyway, there are the shots...