Questions on a huge system in a boat.

[waterboy 10+ year member]

I have a 32' Sunsation Offshore and Im trying to design my system for it. heres what I have so far.

18- Alpine 6x9's SPS-690A w/ 2 Diesel Audio 2000.4's

4 -12" Kicker L7's w/ 1 Kicker 1000.1 Class D

6 - Polk Audio tweeters w/ Kicker 250.2

The reason that Im going with a cheaper amp (Diesel Audio) is the moisture level inside the cabin of the boat is pretty high. In my last boat I was replacing amps about every 3 years.

The 6x9's are in the gunnels on either side of the boat and are in a custom fiberglass panel that aim the vertically placed 6x9's up and out of the cockpit. Ill have 7 on each side behind the drivers/passenger bolsters and 2 more in the front by the driver/passenger. The tweeters will be spaced across the gunnels by the driver/passenger seats so that you can still hear the music at top speed and over the exhaust noise of the motors (LOUD).

For this summer, the subs will be mounted in the Vberth bed area facing straight back. The reason for this is that I wont be able to give up my rear bench seat for a month while they fiberglass a custom rear seat that would be capable of holding the subs until this fall.

Here are my problems. I want to be able to listen to the music at a moderate volume all day long. We primarily use the boat at our local Party Cove and with the flat deck on the boat, it makes a great dance platform for the girls. The boat is only equipped with two batteries. One on each motor.

I will need to add more battery power to necissitate the amps draw. Instead of adding 300 lbs of marine batterys (5 or 6) Im thinking of using one of these:

http://www.lifelinebatteries.com/rvflyer.php?id=7

It will fit in the compartment that is a step into the cabin of the boat.

Do you think that this battery will provide me with 8 hours 0f music with the system im looking at?

The problem is I dont want to weigh down the boat so much that it loses its performance capabilities..

And also. Do I have to run a ground wire from the amps alllll the way back to the batteries??

What about having the subs inside the cabin? Is this going to kill a lot of the sound? We need to be able to hear the music while we are swimming behind the boat.

Thanks for the help, guys.

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[Louisiana_CRX 5,000+ posts]

i'd still use name brand marine amps on a boat that nice....

 

[1000101 10+ year member]

Umm you want a good amp for marine???? Whahaaahahhah i know tha brand for you!!!

MEMPHIS CAR AUDIO.. they have a marine version of a few amps.. these babys kick!!

my buddy had the 600 marine in his car.. he bought the marine version on accident.. but it rocked !!

 

[bones22 5,000+ posts]

memphis and cadence make soem very nice marine stuff

why 6x9s?

 

[waterboy 10+ year member]

the problem with the marine amps is that they are splash resistant but not humidity/moisture resistant.. if theres wet towels/ lifejackets, etc in the cabin and i close the door, it turns into a sauna in there.. Ive been down the "marine" amp road before and the regular amps hold up just as long.. This is the 4th boat ive put a big system and ive had marine amps go bad just as fast as conventionals..

 

[andytb 10+ year member]

how much are the batts

 

[waterboy 10+ year member]

why 6x9s?

I like the 6x9's because they carry more bass to the cockpit area in leiu of having subs out there.. in my own "PERSONAL" opinion, i can hear/feel the bass of the chest/shoulder mounted 6x9's at high speeds than i could with the floor mounted subs i had in my old boat.. your feet could feel the bass goin down the lake but you couldnt hear it.. when we moved the 6x9's up to shoulder level, you could hear everything over the wind noise.

 

[waterboy 10+ year member]

how much are the batts

how much what? cost, weight, amps?

unsure of cost just yet, they are closed right now so I cant get a price quote. Im assuming itll be a few hundred dollars..

 

[dvrmstrng 5,000+ posts]

can we get some pics of this boat....sounds pretty cool man

 

[waterboy 10+ year member]

Heres a pic of the rig..

 

[dvrmstrng 5,000+ posts]

you married cause that thing must be a pussay magnet

 

[waterboy 10+ year member]

notice how its a low profile boat? the back end is very close to the water because of the weight of the motors and low freeboard. I dont want to add more weight to the back so thats why im considering the larger single battery mounted further forward.

 

[waterboy 10+ year member]

you married cause that thing must be a pussay magnet

that, it is.. not sure of the forum rules but, ohhhhh if this boat could talk..//content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

 

[Pop da Hatch 10+ year member]

I dont think that bit of weight will effect it that much, unless we are talking 500+ Ibs.

 

[memphisman 10+ year member]

Build an amp rack with a plexi cover and light it up with neons or leds that would fix the amp problem, also you will want more than one 1000.1 for the l7's my friend has a 10 l7 with a memphis pr1000 on it and it rocks.