[email protected] Posted February 13, 2016 Report Share Posted February 13, 2016 (edited) I am building a system in my boat, please advise as to what I will need battery and alternator. Will be running: -two Alpine PDX M12 (1200 RMS) with Type R 10 inch subs -one Alpine PDX V9 (1100 RMS) with two sets of SPR 60s and two Type R 8 inch subs. I would like to be able to run my system for as long as possible with the motor off at or near peak and then recharge quickly while making runs up the lake. Thx in advance for any pros who can offer some advice Edited February 13, 2016 by [email protected] Quote Link to comment Share on other sites More sharing options...
[email protected] Posted February 13, 2016 Author Report Share Posted February 13, 2016 bump Quote Link to comment Share on other sites More sharing options...
reedal Posted February 14, 2016 Report Share Posted February 14, 2016 I don't think anyone with any sense will recommend playing your system with the engine off and the batteries not being charged for "as long as possible", over and over again. That will stress the batteries a lot shortening their life span dramatically. And then the alternator(s). Using an alternator to bring batteries at low voltage back to life isn't good. Leave the engine running, and bring extra gas with you. That's my suggestion. Quote SMD Tool Map https://www.stevemeadedesigns.com/board/topic/193176-smd-tool-map-new-november-2014/ Build log https://www.stevemeadedesigns.com/board/topic/197217-reeds-03-tahoe-hat-sqaq-singer-xs-shca-cockbox-80prs/?page=32 Link to comment Share on other sites More sharing options...
Ron36 Posted February 14, 2016 Report Share Posted February 14, 2016 I would keep an extra set of paddles around lol Quote 2022 Ford Maverick on 22’s Skar SK1500.1 on 4 Skar VD-8’s Mids Sundown Super tweeters, Skar TX 6.5 components on Skar SKM400.4 LC2 for audio control , XS Power D680 XS Series Extra Battery Link to comment Share on other sites More sharing options...
Kyblack76 Posted February 14, 2016 Report Share Posted February 14, 2016 Just put a couple bats in there, take a charged JUMP MATE with you at all times, get a nice charger to plug it in when sitting around. People put systems in boats all the time. My neighbor has 4 10's and a dozen 6.5 in his. Just add bank, keep it charged. Its not science math. Quote SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
[email protected] Posted February 14, 2016 Author Report Share Posted February 14, 2016 Thx for your opinions gents Letting the motor run is not practical it is a high performance 454 and not meant to idle. I realize that the system will be taxing the batteries, the battery bank (two Deep cycles) for the stereo would be isolated from the starting batteries. Looking for someone with knowledge to advise on alternator size and battery size for best chance and meeting my goals here. Quote Link to comment Share on other sites More sharing options...
andru Posted February 15, 2016 Report Share Posted February 15, 2016 (edited) XS power has a marine battery calc on their website on the top http://4xspower.com/ Edited February 15, 2016 by andru Quote Link to comment Share on other sites More sharing options...
x infektid x Posted February 17, 2016 Report Share Posted February 17, 2016 not being an ass but if your 454 cant idle you have other issues with cooling. check your timing.. . my neighbors 632 idles all day . trrust me. it .. just ... idleeesssss... allll dddaaayyyyy.. but truly, long playtime 'sucks" 'the life out of a batt and the more you do it , the less it is replenished. it dosent matter what brand or size they are, they will kill themselves by being discharged all the time.. now what do you consider 'all the time' is up too you. like once a month? or once a day . it makes a difference Quote if my ears dont buzz. you need more .. Link to comment Share on other sites More sharing options...
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