Originally Posted by Tommy1005 (Post 4272705)

I don't think you'll be happy with the 500/3 on the sub, 180 watts just won't get it moving very well. If it were me I'd go with the 800/8 for the cockpit and cabin speakers and a 600/1 for the sub, this gives the same 75 to each of the 8 speakers, plus 400 to the sub. That extra 220 watts to the sub will make all the difference. This would give you a simple 2 amp setup with good sound quality and a noticeable low end. JL subs can always handle more power than they're rated for I had a 8W3 in my truck for 3 years on 400 watts and never had an issue. I bring that up because the 8W3 and 10IB5 have similar power ratings. If it's setup correctly and you don't just turn the gains all the way up it will last for years without issue. By the way, I run my stuff extremely hard.

Originally Posted by ChargeIt (Post 4272752)

Should sound ok. Depending on your sound preference, a sub with enclosure will deliver significantly better bass. Maybe not important, just a comment.
Really need to spend some time understanding how it is currently wired, both switches and charging.
Your boat is a little out of my familiarity with rigging and general system requirements but starting and operation duties should be able to be combined under a single battery while the alternator charging can be sent another direction. On the other hand, a recreational 47 should have enough room to add more batteries without touching the existing system and not be significantly impacted by an extra 150# of lead.

A point to stress, standard battery chargers like the Promariner WILL BURN UP if attempting to play an amplified stereo while charging, especially with discharged batteries. A Power Supply is the correct tool for the job to power, charge and maintain a battery (within the ratings of that power supply) The 55amp and two batteries (or one big 8D) should handle the transient draws of those two ampifiers.
As with anytime a PS will be used, it is better to start the PS earlier in the day if you know it is going to be a long, hard day of playing. It still strains the PS to try to maintain adequate voltage with a depleted battery.

Originally Posted by ChargeIt (Post 4272529)

I would have someone familiar with marine setups figure out your current battery switch configuration and determine alternatives.
You really only need one start battery while directing the alt output from engine 2 to the house bank. Worst case, the genny start with little juice and with the power supply, can quickly charge any battery bank.
A battery per amp is a good rule of thumb for moderate cove playing.
You have he luxury of a genny. I would look at installing a power supply (powerful charger that can continue charging batteries while playing. do that with a regular charger and it will burn up) Check out Iota DLS-55IQ4.

Wet sounds 6.5 would be a nice sounding in-boat. The cone does have more excursion than most speakers which may be a problem depending how you mount the speaker or how the custom grills attach.
IF you find you cant hear tunes while running or lack while coved, consider the Krypt 6.5. It is a mild compression horn. I say mild because the cross over cuts some of the sharpness often found in a horn. Also, your lower traditional mounting locations are not conducive to highs which travel in a straight line. Thus the extra powered horns help get the sound up. They do need 150watts each. They do require the black grill that comes with and are as deep as a tall boy can so depth should be considered. Also, for best midbass they need an enclosure which can be modified from standard car audio speaker baffles.

Originally Posted by HyFive578 (Post 4272800)

You're right that I went this way because of the power ratings on the sub; the power to the main speakers is the same. We really never run the stereo while running, do you still think this isn't enough power for the sub if we're just anchored listening to tunes?