Rich859 Posted November 26, 2011 Report Share Posted November 26, 2011 I have a 1200 watt stero system, interior leds, halogens, and soon I will have exterior leds, HIDs, and a train horn on my truck. How many amps would I need at idle from an alternator to power all of this? I do have a XS d3400 under the hood, but my stock 136 amp alt isnt enough to power it all without my lights dimming and voltage droping. Also does any one have any good brands they would recommend? I was looking into mike singer alts. Quote Link to comment Share on other sites More sharing options...
vettedude102 Posted November 26, 2011 Report Share Posted November 26, 2011 Do you have the big 3 done? Quote 2 polk audio 4x6'skenwood head-unit 220 amp Mechman alt1979 Corvette 2003 corvette z06 alpine radio and the bose system that came stock Link to comment Share on other sites More sharing options...
Rich859 Posted November 26, 2011 Author Report Share Posted November 26, 2011 Do you have the big 3 done? Yes with all 0 guage wire. Quote Link to comment Share on other sites More sharing options...
BassMunky Posted November 26, 2011 Report Share Posted November 26, 2011 should be fine. re check all of your grounds man Quote Shakin not Stirred....my buildhttp://www.stevemead...ngle-cab-build/412 CVX And put a sealed enclosure in your trunk cut a hole in your deck and call it ported Link to comment Share on other sites More sharing options...
Miguels Posted November 26, 2011 Report Share Posted November 26, 2011 (edited) big 3 should have helped, if not get the 270a from mechman its like 165a at idle Edited November 26, 2011 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...
Rich859 Posted November 26, 2011 Author Report Share Posted November 26, 2011 should be fine. re check all of your grounds man It only goes down to about 12.4 volts when it drops, but with the stuff im planning to add you dont think I will need a bigger alt with more amps at idle? My alt now does 136 max amps. Quote Link to comment Share on other sites More sharing options...
Hitman813 Posted November 26, 2011 Report Share Posted November 26, 2011 a 270 from mechman will do the trick Quote Link to comment Share on other sites More sharing options...
Tarball Posted November 26, 2011 Report Share Posted November 26, 2011 A beefier ALt with more @idle amps will definately not hurt. Quote 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...
deeje Posted November 26, 2011 Report Share Posted November 26, 2011 You should be fine with a stock alt and a good battery with all 0 gauge and the big 3 maybe possibly get your alternator re wound. Quote --2004 Toyota 4runner New Build Log -2002 Acura Tl-S Old Build Log Team DC Audio spl dust is an option you can get on the coils... it's great for extra 1000 watts of power where can i get this spl dust and how much is it. is it hard to apply? lol Link to comment Share on other sites More sharing options...
BassJunkie Posted November 26, 2011 Report Share Posted November 26, 2011 I don't get why everyone is suggesting keeping the stock alt or modding the stock alt when the OP wants to upgrade the alt. The big 3 can only do so much, it doesn't make an alt 10x as powerful. /rant A mechman, singer alt, or dc power alt would do your rig justice. Anything with 100+ amps at idle should be sufficient and leave you room to upgrade things in the future. Just make your purchase based on what you want to spend. Quote 1986 C20 Suburban 9 American Bass XFL 15's B2 M1MKII 14v XS Power Batteries Maxwell Caps Acoustical energy is free. Electrical energy is not you havent lived until you've hit a screw with a router. Link to comment Share on other sites More sharing options...
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