diegoclass2010 Posted June 18, 2012 Report Share Posted June 18, 2012 whats up guys, so im having some voltage drop in my electrical system.. just to give you guys some info i have about 340 Amp of current drawn from all my amps, i have a the big 3 all done with zero gauge wire stinger spp1200 front battery and then 1 run of zero gauge wire to a XS Power D3100 back battery and all amps are hook up to the back battery... i have a DC 270 Alt charging 15.1 Volts cold then 14.4V when hot. I know i should of got the 350 alt but i was a NOOB back then, well still are but learning more... when playing my system at full tilt my voltage drops to 12.3Volts on really bass heavy songs, or on normal songs at 13.8-13 sometimes 11.9 on High notes of bass (dont know why, since the subs dont move that much lol XD )... any help would be appreciated Quote Link to comment Share on other sites More sharing options...
AMI CUSTOMS Posted June 18, 2012 Report Share Posted June 18, 2012 Add another D3100 and some more wire. Done Quote TEAM SOUNDQUBED -- TEAM SOUTH TEAM S.O.B. - Founder & Captain 3x Streetbeat World Record Holder 2017 MWSPL 1st place Mayhem & 4th Xtreme 4 2016 MWSPL 1st place Mayhem/2nd Adv 4/2nd Xtreme 4 2015 MWSPL 2nd place Mayhem & 4th Xtreme 4 2014 USACI 2nd place Streetbeat 5 - 162.6 db 2014 MWSPL 2nd place Xtreme 4 - 144.9 db 2013 USACI 1st place Streetbeat 4 - 161.9 db 2013 USACI 1st place Street Q+ - 162.8 db 2013 MWSPL 3rd Kaos2 & 4th Xtreme 4 2011 USACI 2nd place MOD 1001-2k - 160.0 db 2011 MWSPL 4th place: Adv3 - 157.8 db, Kaos2 - 150s db, Xtreme4 - 140s db 2010 ARSPL 1st place 501-750 - 160.3 db Arkansas loudest Best score to date 164.4 db - Termlab Outlaw Streetbeat 4 - 161.9 db Streetbeat 5 - 162.6 db MWSPL on Dash Legal door open (Music) - 162.5 db Sealed on dash Legal (Music) - 161.1 db - Termlab THE BLACK NASTY CURRENT BUILD & FAB The Black Nasty (6) 15 Rebuild Log 2012 (4) 15 Walled Sierra Build Log Evo X build log Facebook page The Black Nasty Link to comment Share on other sites More sharing options...
diegoclass2010 Posted June 18, 2012 Author Report Share Posted June 18, 2012 what do you mean by more wire add another run of Zero gauge?? or how many?? this time from the alt to the back battery??? and i think another battery would really help Quote Link to comment Share on other sites More sharing options...
Miguels Posted June 18, 2012 Report Share Posted June 18, 2012 (edited) check your grounds and maybe have another run of 1/0 to back batteries right now i have the stock alt and i have no voltage drop. i have 3 runs of wire to my back batteries. you shouldnt have a problem with the 270a alt you have edit: damn ninja Edited June 18, 2012 by Miguels Quote my logshttp://www.stevemead...-my-new-set-up/my blow through loghttp://www.stevemead...future-updates/ 96 ss http://www.stevemeadedesigns.com/board/topic/164094-96-impala-ss-build/ Link to comment Share on other sites More sharing options...
AMI CUSTOMS Posted June 18, 2012 Report Share Posted June 18, 2012 Do another run from alt back and I would do a ground run at the very least from alt case to battery negative in rear. Quote TEAM SOUNDQUBED -- TEAM SOUTH TEAM S.O.B. - Founder & Captain 3x Streetbeat World Record Holder 2017 MWSPL 1st place Mayhem & 4th Xtreme 4 2016 MWSPL 1st place Mayhem/2nd Adv 4/2nd Xtreme 4 2015 MWSPL 2nd place Mayhem & 4th Xtreme 4 2014 USACI 2nd place Streetbeat 5 - 162.6 db 2014 MWSPL 2nd place Xtreme 4 - 144.9 db 2013 USACI 1st place Streetbeat 4 - 161.9 db 2013 USACI 1st place Street Q+ - 162.8 db 2013 MWSPL 3rd Kaos2 & 4th Xtreme 4 2011 USACI 2nd place MOD 1001-2k - 160.0 db 2011 MWSPL 4th place: Adv3 - 157.8 db, Kaos2 - 150s db, Xtreme4 - 140s db 2010 ARSPL 1st place 501-750 - 160.3 db Arkansas loudest Best score to date 164.4 db - Termlab Outlaw Streetbeat 4 - 161.9 db Streetbeat 5 - 162.6 db MWSPL on Dash Legal door open (Music) - 162.5 db Sealed on dash Legal (Music) - 161.1 db - Termlab THE BLACK NASTY CURRENT BUILD & FAB The Black Nasty (6) 15 Rebuild Log 2012 (4) 15 Walled Sierra Build Log Evo X build log Facebook page The Black Nasty Link to comment Share on other sites More sharing options...
diegoclass2010 Posted June 18, 2012 Author Report Share Posted June 18, 2012 check your grounds and maybe have another run of 1/0 to back batteries right now i have the stock alt and i have no voltage drop. i have 3 runs of wire to my back batteries. you shouldnt have a problem with the 270a alt you have edit: damn ninja now that you remind me about grounds i never sanded anything when doing the big 3 well the one to the motor should not that much of a problem since it was bare metal.. but the other one connected to he chassis i know i did have some paint... Quote Link to comment Share on other sites More sharing options...
diegoclass2010 Posted June 18, 2012 Author Report Share Posted June 18, 2012 Do another run from alt back and I would do a ground run at the very least from alt case to battery negative in rear. ok... now thats a new one for me... getting the ground from the basket alt... but if it works it work... last question do you guys think i still need the other battery?? or should i just try with the wire and see what happens??? Quote Link to comment Share on other sites More sharing options...
AMI CUSTOMS Posted June 18, 2012 Report Share Posted June 18, 2012 Do another run from alt back and I would do a ground run at the very least from alt case to battery negative in rear. ok... now thats a new one for me... getting the ground from the basket alt... but if it works it work... last question do you guys think i still need the other battery?? or should i just try with the wire and see what happens??? What is your voltage difference at the alt verses at the amp? If is over .5 volt then more wire is a must. Quote TEAM SOUNDQUBED -- TEAM SOUTH TEAM S.O.B. - Founder & Captain 3x Streetbeat World Record Holder 2017 MWSPL 1st place Mayhem & 4th Xtreme 4 2016 MWSPL 1st place Mayhem/2nd Adv 4/2nd Xtreme 4 2015 MWSPL 2nd place Mayhem & 4th Xtreme 4 2014 USACI 2nd place Streetbeat 5 - 162.6 db 2014 MWSPL 2nd place Xtreme 4 - 144.9 db 2013 USACI 1st place Streetbeat 4 - 161.9 db 2013 USACI 1st place Street Q+ - 162.8 db 2013 MWSPL 3rd Kaos2 & 4th Xtreme 4 2011 USACI 2nd place MOD 1001-2k - 160.0 db 2011 MWSPL 4th place: Adv3 - 157.8 db, Kaos2 - 150s db, Xtreme4 - 140s db 2010 ARSPL 1st place 501-750 - 160.3 db Arkansas loudest Best score to date 164.4 db - Termlab Outlaw Streetbeat 4 - 161.9 db Streetbeat 5 - 162.6 db MWSPL on Dash Legal door open (Music) - 162.5 db Sealed on dash Legal (Music) - 161.1 db - Termlab THE BLACK NASTY CURRENT BUILD & FAB The Black Nasty (6) 15 Rebuild Log 2012 (4) 15 Walled Sierra Build Log Evo X build log Facebook page The Black Nasty Link to comment Share on other sites More sharing options...
wmrcs Posted June 18, 2012 Report Share Posted June 18, 2012 sometimes 11.9 on High notes of bass (dont know why, since the subs dont move that much lol XD )... any help would be appreciated I've noticed that the sub moves MORE in the upper range of my box... Quote E34 540iT/6 Link to comment Share on other sites More sharing options...
Socky Posted June 18, 2012 Report Share Posted June 18, 2012 adding more runs will increase it a little, not much, but sounds like you need more reserve compacity, since you are drawing more power than your alt can make. Need more batteries to matain a higher voltage. Quote Jeep Cherokee 4dr -4.75 in front, new rusty's 4.5 in rear leafs -micky thompson 35x14.50x15 -locker rear -Rusty's offroad Engine/transmission/transfer case/crossmember/gas tank skid plates -Warn front bumper with 8000lb winch -Custom rear bumper -Warrior product tube doors (summertime) -Optima redtop (starter) -26XK miles and still runs like a bat out of hell Kenwood H/U 1/0 wire, 136 amp alt 200 ah batteries 12.7 daily 2 Apsm 1500 @ 2 ohm strapped on zv3 d1 with ns softparts Mb quart 125.4 wired to 4 aura 6's 3.6 cube box tuned to 36 plays down to 23hz Link to comment Share on other sites More sharing options...
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