MIKE-2U Posted July 10, 2012 Author Report Share Posted July 10, 2012 150 amps made up with baterries. Does that mean there amp hours need to add up to that ? And did you factor in my d3400 starter battery? Quote 2006 Jeep Grand Cherokee LaredoPioneer AVH- 3200DVD2/0 Flex-A-Prene Welding Cable (2) Fully Loaded Fi Sp4's dual 1-------> My YouTube Channel <------- Needs more power those woofers will laugh at that turd Link to comment Share on other sites More sharing options...
Kranny Posted July 10, 2012 Report Share Posted July 10, 2012 (edited) for an amp that is 70% efficient, wired to 1 ohm outputting 100 amps, it has to draw 130 amps from the electrical system edit: im not sure if im completely correct though, so dont quote me Edited July 10, 2012 by Kranny Quote Link to comment Share on other sites More sharing options...
ch0sen Posted July 10, 2012 Report Share Posted July 10, 2012 you have the right idea Kranny Quote My current 95 Jetta Build w/ pioneer h/u 2 RD Sonance 10's with flatwind coils 2 Audiopipe apsm 1500.1s 1 Hifonics Brutus Elite 60x4 1 XS d925 1 Stinger spv35 1 1000 amp lead acid 50 ft of 0/1 ofc from Audiotechnix all powerbass components, and coaxils, 4 sets buildlog = http://www.stevemead...2-rd-10s-build/ My build for my wife. http://www.stevemead...01-f-150-build/ Link to comment Share on other sites More sharing options...
MIKE-2U Posted July 10, 2012 Author Report Share Posted July 10, 2012 So battery ahs need to be 150 at least chosen? Quote 2006 Jeep Grand Cherokee LaredoPioneer AVH- 3200DVD2/0 Flex-A-Prene Welding Cable (2) Fully Loaded Fi Sp4's dual 1-------> My YouTube Channel <------- Needs more power those woofers will laugh at that turd Link to comment Share on other sites More sharing options...
siucsaluki11 Posted July 11, 2012 Report Share Posted July 11, 2012 Im now lost, but I'm interested in this thread, since I'm trying to get my electrical squared away. How do you figure out how much you really draw? How do you then figure out what you need? Just add up output of your alt plus Ah from your batteries? Quote woman..cant live with em...cant shoot em...guess were all fucked You might be a Redneck if you use your leftover gutters for a speaker box port... YOU JUST LOST THE GAMER.I.P. Blazer=========================Last setup was in the 141s on music (37hz) with 2 12s and 1kw in a 4dr blazer.2010 Mitsubishi Lancer DE2 12in Clarions (kept from blazer)HiFonics BRZ1700.1d (at 2 ohms BLOWN) [JBL GTS180X for subs currently 60wRMS x2ch!!!!!! This works for till i get the blown amp fixed] Alpine 4ch salvaged from blazer (currently near death)9887 peerless 7s in the doors and CDT tweeters ran active no speakers in the rearKintik HC1400 under the hood.metered once a while ago, dont remember it...was piss poor compared to the blazer, mid 130s i think....looking to replace subs and amp when i have money. Link to comment Share on other sites More sharing options...
Tim Lam Posted July 12, 2012 Report Share Posted July 12, 2012 Im now lost, but I'm interested in this thread, since I'm trying to get my electrical squared away. How do you figure out how much you really draw? How do you then figure out what you need? Just add up output of your alt plus Ah from your batteries? well the equation for Watts is AmpsxVolts so if you have a 3500watt system and your car idles at 14V, you'll need 250amps which comes from the alternator. but you also have to figure in the draws from the stock electricals of the car itself. the actual draw of the amp is something you have to take a multimeter to, these people on here are just guessing how efficient that amp is at .5 ohms Quote Link to comment Share on other sites More sharing options...
siucsaluki11 Posted July 14, 2012 Report Share Posted July 14, 2012 Im now lost, but I'm interested in this thread, since I'm trying to get my electrical squared away. How do you figure out how much you really draw? How do you then figure out what you need? Just add up output of your alt plus Ah from your batteries? well the equation for Watts is AmpsxVolts so if you have a 3500watt system and your car idles at 14V, you'll need 250amps which comes from the alternator. but you also have to figure in the draws from the stock electricals of the car itself. the actual draw of the amp is something you have to take a multimeter to, these people on here are just guessing how efficient that amp is at .5 ohms i knew P=VI I was trying to figure out what the amps are really drawing....to figure out efficiency. Quote woman..cant live with em...cant shoot em...guess were all fucked You might be a Redneck if you use your leftover gutters for a speaker box port... YOU JUST LOST THE GAMER.I.P. Blazer=========================Last setup was in the 141s on music (37hz) with 2 12s and 1kw in a 4dr blazer.2010 Mitsubishi Lancer DE2 12in Clarions (kept from blazer)HiFonics BRZ1700.1d (at 2 ohms BLOWN) [JBL GTS180X for subs currently 60wRMS x2ch!!!!!! This works for till i get the blown amp fixed] Alpine 4ch salvaged from blazer (currently near death)9887 peerless 7s in the doors and CDT tweeters ran active no speakers in the rearKintik HC1400 under the hood.metered once a while ago, dont remember it...was piss poor compared to the blazer, mid 130s i think....looking to replace subs and amp when i have money. Link to comment Share on other sites More sharing options...
Tim Lam Posted July 14, 2012 Report Share Posted July 14, 2012 Im now lost, but I'm interested in this thread, since I'm trying to get my electrical squared away. How do you figure out how much you really draw? How do you then figure out what you need? Just add up output of your alt plus Ah from your batteries? well the equation for Watts is AmpsxVolts so if you have a 3500watt system and your car idles at 14V, you'll need 250amps which comes from the alternator. but you also have to figure in the draws from the stock electricals of the car itself. the actual draw of the amp is something you have to take a multimeter to, these people on here are just guessing how efficient that amp is at .5 ohms i knew P=VI I was trying to figure out what the amps are really drawing....to figure out efficiency. well you cant really know how efficient amps are unless you clamp them. Quote Link to comment Share on other sites More sharing options...
n8ball2013 Posted July 14, 2012 Report Share Posted July 14, 2012 At. 5 you should factor for about 600 amps of draw. For about an additional 300 watts or so. Quote THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger. Link to comment Share on other sites More sharing options...
MIKE-2U Posted July 14, 2012 Author Report Share Posted July 14, 2012 At. 5 you should factor for about 600 amps of draw. For about an additional 300 watts or so. At. 5 you should factor for about 600 amps of draw. For about an additional 300 watts or so. So 600 amps , subtract 200 (80%) of my alt and thats 400 amps left. soo where do i get that 400 from ? Quote 2006 Jeep Grand Cherokee LaredoPioneer AVH- 3200DVD2/0 Flex-A-Prene Welding Cable (2) Fully Loaded Fi Sp4's dual 1-------> My YouTube Channel <------- Needs more power those woofers will laugh at that turd Link to comment Share on other sites More sharing options...
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