Neckbeard Posted June 2, 2013 Report Share Posted June 2, 2013 So, in the opel, i want to do a dc 2k and a dc 175.4. I will have a 1998-ish chevy 4.3L which i think has a 90amp alt on it. Can i just do some XS batts and call it good without having to upgrade the alt? like 2 D3100 or something? Build log, Super slow!!: http://www.stevemeadedesigns.com/board/topic/168096-slow-neckbeards-1970-opel-gt/ Link to comment Share on other sites More sharing options...
Sergeant_Skyrim Posted June 2, 2013 Report Share Posted June 2, 2013 Depends, is this for a daily application or spl purposes? If it's for daily I'd suggest a HO alt + maybe 1 extra battery. You're gonna be drawing more current than your stock alt can supply so you're gonna want to be able to handle that current draw. Build in progress Link to comment Share on other sites More sharing options...
Neckbeard Posted June 2, 2013 Author Report Share Posted June 2, 2013 fuuuuuuck, was really hoping i didnt have to get one Build log, Super slow!!: http://www.stevemeadedesigns.com/board/topic/168096-slow-neckbeards-1970-opel-gt/ Link to comment Share on other sites More sharing options...
Smoove Posted June 2, 2013 Report Share Posted June 2, 2013 Key thing to remember, your stock alt is really there to keep the car running and lights on. The manufacturer never expected anyone add a 200+ amp of additional draw. 2 Team Fi 15's v1 2 DD M5's 970amps of Alt 6th order blowthroughThe truck Blowthrough build : http://www.stevemeadedesigns.com/board/topic/155555-smooves-1996-chevy-ext-cab-c1500-slow-build/The 350z build : http://www.stevemeadedesigns.com/board/topic/170694-smooves-2003-nissan-350z/ My FB page https://www.facebook.com/pages/Smooves-Car-Audio-and-performance/719746144805343 Team Fi Audio http://www.ficaraudio.com/ Link to comment Share on other sites More sharing options...
Tarball Posted June 2, 2013 Report Share Posted June 2, 2013 the good news is there are plenty of options for the 4.3 vortec. 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...
Neckbeard Posted June 2, 2013 Author Report Share Posted June 2, 2013 the good news is there are plenty of options for the 4.3 vortec. Truth, i think im gonna do the 250amp DC power before i get the subs in. Otherwise the subs would be useless lol Build log, Super slow!!: http://www.stevemeadedesigns.com/board/topic/168096-slow-neckbeards-1970-opel-gt/ Link to comment Share on other sites More sharing options...
Crandis16 Posted June 2, 2013 Report Share Posted June 2, 2013 if it's a daily drive then I'm gonna say yes because all you're doing essentially is making the pool bigger. So it will simply take longer to run out of juice than if you only had only one battery..... output > input = bad My Red zx2 Build Log My Black zx2 Build Log My Red zx2 UBL Link to comment Share on other sites More sharing options...
Neckbeard Posted June 2, 2013 Author Report Share Posted June 2, 2013 if it's a daily drive then I'm gonna say yes because all you're doing essentially is making the pool bigger. So it will simply take longer to run out of juice than if you only had only one battery..... output > input = bad Or should i get the HO alt THEN the subs? edit:And is output the electrical? Wouldnt that be bad to run a 90amp on 2 huge batteries with just 3k watts in audio? D: Build log, Super slow!!: http://www.stevemeadedesigns.com/board/topic/168096-slow-neckbeards-1970-opel-gt/ Link to comment Share on other sites More sharing options...
ChevyBoy95 Posted June 2, 2013 Report Share Posted June 2, 2013 you are essentially running close to 3krms. I personally would go with a HO alt after 2k. Best Score to Date : 160.5 dB Outlaw (47Hz)[4 XM 15's & 2 Taramps Bass 12k's] BL : http://www.stevemeadedesigns.com/board/topic/147800-chevyboy95s-4-15s-7krms-wall-1533-db-on-half-power/YouTube: http://www.youtube.com/hitemwiththeflex/ Link to comment Share on other sites More sharing options...
Crandis16 Posted June 3, 2013 Report Share Posted June 3, 2013 putting that much strain on a stock alt will be the death of it I say alt then subs from personal experience... loved my sub after I got it, but amp was always cutting out because I didn't have proper electrical (alt and batts) My Red zx2 Build Log My Black zx2 Build Log My Red zx2 UBL Link to comment Share on other sites More sharing options...
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