cocoleveo7686 Posted February 21, 2015 Report Posted February 21, 2015 I currently have a 110a alternator with 2 yellow tops 1 up front one in the back. They are about 5 years old. no big 3 done and im running ab vfl 200.1 and alpine 5 channel amp for my mids highs. Right now I get voltage drop to 11.9 lowest at full tilt for a song. I am thinking the batteries arent that good anymore but what size altetnator would you go with? 240 or 270? I am gonna buy 1 100ah battery for the rear. Can I get away with big 3 and 2 big batteries on the 110a alt? My idle is turned up to 800 bc the car is tuned
redwolf2 Posted February 21, 2015 Report Posted February 21, 2015 Someone with more expertise will chime in... But from experience get away from Optimas. You'd be a lot happier running a quality AGM battery (northstar, Xs power) Assuming that amp is 2k watts, you would benefit from a bigger alternator as well. You're not driving anything crazy, so you could get away with doing something smaller
cocoleveo7686 Posted February 21, 2015 Author Report Posted February 21, 2015 Someone with more expertise will chime in... But from experience get away from Optimas. You'd be a lot happier running a quality AGM battery (northstar, Xs power) Assuming that amp is 2k watts, you would benefit from a bigger alternator as well. You're not driving anything crazy, so you could get away with doing something smaller Vfl 200.1? Its rated 3800 rms my alpine ks 500rms. So 4.3k total. Im driving 2 12 xfl 12s
Tarball Posted February 21, 2015 Report Posted February 21, 2015 Do you big 3 like yesterday and get a bigger alt and some good batteries like suggested. 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
cocoleveo7686 Posted February 23, 2015 Author Report Posted February 23, 2015 Do you big 3 like yesterday and get a bigger alt and some good batteries like suggested. What size alt do you suggest for 4k rms keeping voltage above 13.8?
rockFord_Expedition Posted February 24, 2015 Report Posted February 24, 2015 110A alt no bueno. Yellow tops are ok, obviously there are better to be had but make sure that whatever you run is in good shape. For 4k on music a 270 should be fine as far as amperage goes. When talking about voltage, that would depend on PCM Old School/New School RF Build March 2015 SOTM Winner How to crimp large wire
Kyblack76 Posted February 24, 2015 Report Posted February 24, 2015 Yellow tops are fine... why would batteries matter when your trying to hold OVER what they can provide???? people are weird.... SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold
rockFord_Expedition Posted February 24, 2015 Report Posted February 24, 2015 Yellow tops are fine... why would batteries matter when your trying to hold OVER what they can provide???? people are weird.... Been in many a heated discussion trying to get that SAME point across bro. Old School/New School RF Build March 2015 SOTM Winner How to crimp large wire
cocoleveo7686 Posted February 24, 2015 Author Report Posted February 24, 2015 110A alt no bueno. Yellow tops are ok, obviously there are better to be had but make sure that whatever you run is in good shape. For 4k on music a 270 should be fine as far as amperage goes. When talking about voltage, that would depend on PCM Well the only person who does alts for my car is singer alternator. He told me that he has designed the alt for my car to internally regulate voltage at 14.8 or I can get an external regulator. He said I will have a battery light on because I wont be using any of the stock wiring. Think that sounds right he had his internally regulate at 14.8?
rockFord_Expedition Posted February 24, 2015 Report Posted February 24, 2015 110A alt no bueno. Yellow tops are ok, obviously there are better to be had but make sure that whatever you run is in good shape. For 4k on music a 270 should be fine as far as amperage goes. When talking about voltage, that would depend on PCM Well the only person who does alts for my car is singer alternator. He told me that he has designed the alt for my car to internally regulate voltage at 14.8 or I can get an external regulator. He said I will have a battery light on because I wont be using any of the stock wiring. Think that sounds right he had his internally regulate at 14.8? I am not even going to pretend to know as much as Mike about alternators, not even close. I will say that if he says it, it's probably true. Old School/New School RF Build March 2015 SOTM Winner How to crimp large wire
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