AB18VFL Posted March 25, 2012 Report Share Posted March 25, 2012 i have a 2005 subaru impreza. i think the stock alt is 120a. With stock alt, big 3, AGM batt, and multiple grounds, what is the most amount of watts YOU guys would feel safe runing on daily music? Quote SUBSCRIBE AT YOUTUBE! 18abVFL < CLICK!! 2005 Subaru Impreza My build log. Head unit- Kenwood Excelon KDC-X695 Front doors- Rockford Fosgate 6.5" Prime components Rear doors- Rockford Fosgate 4" Punch coaxials Sub amp- Audiopipe AP18001d Subs- Two American Bass TNT 10"s Box- 2.6 cubes @ 34hz, 36in of port Big 3 & run of Raptor 1/0 to rear powercell TEAM 808 UPSTATE NY. Can it be heard 2 blocks away, thats how i rate systems. Link to comment Share on other sites More sharing options...
AB18VFL Posted March 26, 2012 Author Report Share Posted March 26, 2012 bump? Quote SUBSCRIBE AT YOUTUBE! 18abVFL < CLICK!! 2005 Subaru Impreza My build log. Head unit- Kenwood Excelon KDC-X695 Front doors- Rockford Fosgate 6.5" Prime components Rear doors- Rockford Fosgate 4" Punch coaxials Sub amp- Audiopipe AP18001d Subs- Two American Bass TNT 10"s Box- 2.6 cubes @ 34hz, 36in of port Big 3 & run of Raptor 1/0 to rear powercell TEAM 808 UPSTATE NY. Can it be heard 2 blocks away, thats how i rate systems. Link to comment Share on other sites More sharing options...
bobobass Posted March 26, 2012 Report Share Posted March 26, 2012 I have a 2000 Subaru outback and have no issues running 1200 watts on the stock 90 amp alternator. All I have done is the big three. Quote 2000 Subaru outback 2.5l Head Unit: Pioneer deh 4300ub front stage: tbd subwoofer: Stock Fi Q 18" amp: Audio que 1200d Link to comment Share on other sites More sharing options...
AB18VFL Posted March 27, 2012 Author Report Share Posted March 27, 2012 anyone have input? Quote SUBSCRIBE AT YOUTUBE! 18abVFL < CLICK!! 2005 Subaru Impreza My build log. Head unit- Kenwood Excelon KDC-X695 Front doors- Rockford Fosgate 6.5" Prime components Rear doors- Rockford Fosgate 4" Punch coaxials Sub amp- Audiopipe AP18001d Subs- Two American Bass TNT 10"s Box- 2.6 cubes @ 34hz, 36in of port Big 3 & run of Raptor 1/0 to rear powercell TEAM 808 UPSTATE NY. Can it be heard 2 blocks away, thats how i rate systems. Link to comment Share on other sites More sharing options...
c.director Posted March 27, 2012 Report Share Posted March 27, 2012 I have a 2000 Subaru outback and have no issues running 1200 watts on the stock 90 amp alternator. All I have done is the big three. Really? Whats your voltage drop at the amp? Quote Facebook: http://www.facebook.com/caleb.arnold.9809 YouTube: http://www.youtube.com/user/CustomAudioChannel?feature=watch Link to comment Share on other sites More sharing options...
jrchevy87 Posted March 27, 2012 Report Share Posted March 27, 2012 (edited) just do the math, if you have a 120 amp alt and your car uses prolly 30% of that so that leaves roughly 90 amps for your system. so 90x14.4=1296watts then factor in the efficiency of a typical class d amp(70% usually) and that gives you 907 watts on your factory electrical system, anything above that and youll need extra batts and upgraded alternator Edited March 27, 2012 by jrchevy87 Quote Jeep Wrangler TJ Hardtop Build Link to comment Share on other sites More sharing options...
bobobass Posted March 27, 2012 Report Share Posted March 27, 2012 I have a 2000 Subaru outback and have no issues running 1200 watts on the stock 90 amp alternator. All I have done is the big three. Really? Whats your voltage drop at the amp? It sits at 14.6 stock and haven't had it drop past 13 volts. Quote 2000 Subaru outback 2.5l Head Unit: Pioneer deh 4300ub front stage: tbd subwoofer: Stock Fi Q 18" amp: Audio que 1200d Link to comment Share on other sites More sharing options...
SnowDrifter Posted March 27, 2012 Report Share Posted March 27, 2012 I would say right around 2k Quote ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444 Link to comment Share on other sites More sharing options...
AB18VFL Posted March 27, 2012 Author Report Share Posted March 27, 2012 i would love to run 2k, i just wanna be sure i can handle it. I will have a 35ah AGM in back, all 1/0 big 3 and power/grounds. Quote SUBSCRIBE AT YOUTUBE! 18abVFL < CLICK!! 2005 Subaru Impreza My build log. Head unit- Kenwood Excelon KDC-X695 Front doors- Rockford Fosgate 6.5" Prime components Rear doors- Rockford Fosgate 4" Punch coaxials Sub amp- Audiopipe AP18001d Subs- Two American Bass TNT 10"s Box- 2.6 cubes @ 34hz, 36in of port Big 3 & run of Raptor 1/0 to rear powercell TEAM 808 UPSTATE NY. Can it be heard 2 blocks away, thats how i rate systems. Link to comment Share on other sites More sharing options...
jrchevy87 Posted March 27, 2012 Report Share Posted March 27, 2012 (edited) you should be good for 2k, at worst just grab a third batt, the good thing about bass is that its not constant the power demands will vary from note to note so you can get away with running more power than your alt can supply at one time but with the extra batts its like a buffer the batts can supply enough power for the amp then the alt can recharge the batts at its own rate Edited March 27, 2012 by jrchevy87 Quote Jeep Wrangler TJ Hardtop Build Link to comment Share on other sites More sharing options...
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