ehckz Posted January 24, 2012 Report Share Posted January 24, 2012 Im going to order a 250A alternator from singer and it will be running with a good battery up front and 1 maybe 2 batteries in the back. I was wondering how many watts I could run before I started to strain the electric system....I'm looking at wanting to run 2000-2500, nothing to insane but a decent amount. Quote Build In Progress for Slamology 2013 3 m1xl 18s walled in a gti 1 5k 4 batts audio technix 1/0 8 cheap r/f 6.5s mb quart 4.60 Link to comment Share on other sites More sharing options...
LoudBimmer Posted January 24, 2012 Report Share Posted January 24, 2012 (edited) 4k+ with 2 good batteries Edited January 24, 2012 by LoudBimmer Quote Link to comment Share on other sites More sharing options...
dwright27 Posted January 24, 2012 Report Share Posted January 24, 2012 15,000 Quote 2006 F-150 4 DC XL M2 18's Walled Daily Driver XS Power 4 DC 3.5kw Team DC Team S.P.L. Lot of Audio Technix and 1/0 DC Audio Dealer American Bass Dealer XS Power Dealer Audio Technix Dealer Link to comment Share on other sites More sharing options...
ehckz Posted January 24, 2012 Author Report Share Posted January 24, 2012 4k+ with 2 good batteries Thanks Quote Build In Progress for Slamology 2013 3 m1xl 18s walled in a gti 1 5k 4 batts audio technix 1/0 8 cheap r/f 6.5s mb quart 4.60 Link to comment Share on other sites More sharing options...
alaskanzx5 Posted January 24, 2012 Report Share Posted January 24, 2012 wouldnt it depend on the effeincy of the amp? Quote t1500bdcp 2 t2d4 15" 1 t600.4 1 t400.2 1 set p1 tweets singer alt, tons of wiring, smd vm-1, 80prs, back seat delete, still in the works, aiming for a 145-147 with the ability to play 25hz up to 50hz. Link to comment Share on other sites More sharing options...
ehckz Posted January 24, 2012 Author Report Share Posted January 24, 2012 15,000 LOL I dont think I would want to put that much power into a g6. Quote Build In Progress for Slamology 2013 3 m1xl 18s walled in a gti 1 5k 4 batts audio technix 1/0 8 cheap r/f 6.5s mb quart 4.60 Link to comment Share on other sites More sharing options...
CHEVY4X4BLAZER Posted January 24, 2012 Report Share Posted January 24, 2012 Your setup should be fine as you stated. Remember to do big 3 and fuse appropriately. Quote Link to comment Share on other sites More sharing options...
snafu Posted January 24, 2012 Report Share Posted January 24, 2012 (edited) Guys, this is simple math. We're all over the map here. I'll answer the question for 14.4 volts with Class D amplifiers, assuming: - the alternator mentioned can indeed make its rated output at 14.4 Volts - the vehicle requires 50 amps to run all stock accessories - the batteries require between 7 and 10 amps each to maintain a surface charge - the audio system is played at clipping (as loud as it'll play cleanly) 250 Amps - 50 Amps - 30 Amps (batteries, worse case scenario) = 170 Amps left for amplifiers 170 Amps x 14.4 Volts = 2,448 Watts 2,448 Watts x 75% Amplifier Efficiency = 1,836 Watts of amplifier power when reproducing sine waves With music, even bass discs, duty cycle is about 50% 1,836 Watts / 50% duty cycle = 3,672 Watts of amplifier power when playing music This number will indeed increase at 12.6 Volts (nominal voltage of the batteries) but too many variables are missing from the OPs question to make a SWAG (Scientific Wild Ass Guess). Having said that, I have approximately 3,000 Watts RMS in my daily driver and a DC Power 250 Amp alternator with a single Red Top. And guess what . . . I can JUST pull voltage into the 12s with it all full tilt on Bass Mekanik. This is indeed a case where the math simply doesn't lie. Edited January 24, 2012 by snafu Quote Tony Candela - SMD Sales & Marketing Email me at [email protected] to learn about becoming an SMD Partner! Link to comment Share on other sites More sharing options...
CJ18 Posted January 24, 2012 Report Share Posted January 24, 2012 Guys, this is simple math. We're all over the map here. I'll answer the question for 14.4 volts with Class D amplifiers, assuming: - the alternator mentioned can indeed make its rated output at 14.4 Volts - the vehicle requires 50 amps to run all stock accessories - the batteries require between 7 and 10 amps each to maintain a surface charge - the audio system is played at clipping (as loud as it'll play cleanly) 250 Amps - 50 Amps - 30 Amps (batteries, worse case scenario) = 170 Amps left for amplifiers 170 Amps x 14.4 Volts = 2,448 Watts 2,448 Watts x 75% Amplifier Efficiency = 1,836 Watts of power to reproduce sine waves With music, even bass discs, duty cycle is about 50% 1,836 Watts / 50% duty cycle = 3,672 Watts This number will indeed increase at 12.6 Volts (nominal voltage of the batteries) but too many variables are missing from the OPs question to make a SWAG (Scientific Wild Ass Guess). Having said that, I have approximately 3,000 Watts RMS in my daily driver and a DC Power 250 Amp alternator with a single Red Top. And guess what . . . I can JUST pull voltage into the 12s with it all full tilt on Bass Mekanik. This is indeed a case where the math simply doesn't lie. I would listen to this guy. He just might know his stuff! Quote Link to comment Share on other sites More sharing options...
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