bassaddiction Posted July 23, 2012 Report Share Posted July 23, 2012 my truck drops to 11.9 volts and stays at 13.7 when everything is off . i got big 3 done, 1 run of 0 g, 1400 kinetic battery and i "had" a 16f battery cap. im running a aq 2200 and rf p850.4 old school amp. 2 moths ago when i had the cap and everything was new my voltage was 14.7 is 11.9v ok or am i cliping? what can i do? h/o alt is to much money right now should i add a 3rd batt thanks Link to comment Share on other sites More sharing options...
Tarball Posted July 23, 2012 Report Share Posted July 23, 2012 U really need alt. CURRENT SYSTEM: Alternator: Stock alt on mids/highs Isolated DC Power 270 SP - Charging @ 16.8v Batteries: (2) XS D1400s Power Cable: Double Runs of 1/0 KNU Kolossus Fleks Headunit: 80-PRS Sub Amp: DC 5.0k Subwoofers: 2 RE MT 15s /PSI dual .7ohm recones Subwoofer Enclosure: 9.1cubes @ 32hz - brutal. Mids & Highs Amp: CT125.4 Active Components: Mids RE XXX 6.5c Highs - 3 RE XXX tweeters per side(A pillar) Noise Control: Damplifier Pro all over the cab. Build Log If you do business with me please leave feedback here: FEEDBACK THREAD Highest Legal Score: 151.0 db Highest Musical 30 Second Average: 151.6 db Link to comment Share on other sites More sharing options...
Kranny Posted July 23, 2012 Report Share Posted July 23, 2012 get a new alternator from mechman or dc power if you want to keep those amps alive. adding more batteries wont really help that much. your alt is already using 20 amps of its power to charge your two batteries. your alt, if i looked it up correctly (01 sierra) is 145 amps. you have two options here. either 1) turn the volume down. or 2) get a ho alt. you also have to realize that your batteries take a LONG time to charge. shit, the alternator doesnt even really charge them fully since thats not its job. so having the voltage dip down that much, then stopping your music for like two minutes, and playing full tilt again, means that your batteries never get a good charge. edit: not to mention your kinetik isnt really big enough to suit your stereo. Link to comment Share on other sites More sharing options...
bassaddiction Posted July 23, 2012 Author Report Share Posted July 23, 2012 with the battery cap and batterys at full charge it drops to 12.5v ish so your say get a high output alt or play it till batterys get low? how many amp alt do i need? thanks for the help Link to comment Share on other sites More sharing options...
Crandis16 Posted July 23, 2012 Report Share Posted July 23, 2012 If you go with 3rd battery then you need to charge your batteries at night IMO. It would be easier to maintain your voltage by getting a HO alt like Kranny already stated. My Red zx2 Build Log My Black zx2 Build Log My Red zx2 UBL Link to comment Share on other sites More sharing options...
Kranny Posted July 23, 2012 Report Share Posted July 23, 2012 with the battery cap and batterys at full charge it drops to 12.5v ish so your say get a high output alt or play it till batterys get low? how many amp alt do i need? thanks for the help capacitors do absolutely fucking nothing in your case. they're doing more harm than good. you either spend the $500 and get the biggest high output alt you can get from either of those companies i listed, or dont let your voltage drop down into the 12's. the voltage is going to drop regardless of how many batteries you put in it. the alt will only be able to output so much power. the more batteries you put in, the longer it will take the alt to charge them. Link to comment Share on other sites More sharing options...
bassaddiction Posted July 23, 2012 Author Report Share Posted July 23, 2012 ok what if i get a off brand alt or and a 2nd stock alt from junk yard wood it be cheaper Link to comment Share on other sites More sharing options...
Real96SS Posted July 23, 2012 Report Share Posted July 23, 2012 You get what you pay for when it comes to alternators and batteries. Electrical is one thing you dont want to go cheap on. Especially if you want your system to last and sound great while doing it Vehicle 2007 Chevrolet Avalanche(Co-Co) DNX9980HD 6 Team Fi 15's(King Edition) 3 DC 9k's 8 Nendo PWX 8's 4 Custom Steg 4" Super Tweeters 1 DC Audio 175.4 1 DC Audio 90.4 Rockford 360.3 3 DC Power 370xp Alts(Externally regulated) 21 D1600's 2 D4800's All SMD RCA's AudioTechnix Deadner Viper Alarm My YouTube- http://www.youtube.c...NG?feature=mhee Link to buildlog- http://www.stevemead...4-15s-2-dc-9ks/ Link to UBL- http://www.stevemeadedesigns.com/board/topic/165059-ublkings-avalanchecoco-new-build-starting8-king-edition-15-team-fis-in-a-wallyes-a-wall/ Link to comment Share on other sites More sharing options...
bassaddiction Posted July 23, 2012 Author Report Share Posted July 23, 2012 maybe i will just turn the gains down on my amps, if i do that should i remove the 2nd battery . or get rid of my mid's and hi's lol, bass is to inportant Link to comment Share on other sites More sharing options...
bassaddiction Posted July 24, 2012 Author Report Share Posted July 24, 2012 is this good enough http://www.ebay.com/...4019f5f&vxp=mtr or http://www.ebay.com/itm/HIGH-OUTPUT-250AMP-ALTERNATOR-CHEVROLET-AVALANCHE-5-3L-03-04-/280918910989?pt=Motors_Car_Truck_Parts_Accessories&fits=Year%3A2004|Make%3AGMC|Model%3ASierra+1500|Engine+-+Liter_Display%3A4.8L&hash=item416812680d&vxp=mtr Link to comment Share on other sites More sharing options...
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