ccrider540 Posted March 9, 2010 Report Share Posted March 9, 2010 So im going to get a new alternator but im not sure what amp alt I will need. Im going to have two amps for my subs that both run at 1700 rms at 2 ohms and a 4 channel for my mids and highs that is 170 x 4 at 2 ohms. And i have 1 yellow top unnder the hood with the big three and i have 1/0 for everything. So I was thinking about a 260 amp alternator, will that be enough or should i get a 300 amp alt? Quote 1)Alpine CDA-117 1)hifonics brutus bxi 2610 1)hifonics zeus zxi6410 3)Alpine sps-600c 2)Fi BL d1 15s fully loaded Link to comment Share on other sites More sharing options...
skittlesRgood Posted March 9, 2010 Report Share Posted March 9, 2010 any reason not to get the biggest one? Quote If I answered you in a well mannered, informative way, you asked a good question or had a good attitude. If I was an asshole, you asked a stupid question or you had a fucktard attitude... or I was in a bad mood. Team BassickHU: Pioneer AVIC Z110Front: Peerless SLS 6.5", Peerless HDS 4", Rainbow tweeter - running activeAmp: JL HD600/4 and DC 4 channel (bridged to midbass)Processor: JBL MS-8Subs: 2x 12" AA MayhemsAmp: DC 3kElectrical: DC power 270xp alt. 1/0 big 4. XSpower D3400 and six D680s. http://www.stevemeadedesigns.com/board/topic/121795-29-update-the-buick-is-getting-a-rebuild/ Top career scores: DBdrag 151.7 MECA SQ 82.25My SOTM build Yeah. im pretty sure they dont warranty retarded people. Link to comment Share on other sites More sharing options...
n8ball2013 Posted March 9, 2010 Report Share Posted March 9, 2010 in some cases the larger alternators will have a lower output idle. 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...
ccrider540 Posted March 9, 2010 Author Report Share Posted March 9, 2010 any reason not to get the biggest one? not really just trying to say an extra 50 bucks but i was thinking about sayin fuck it and get the 300 Quote 1)Alpine CDA-117 1)hifonics brutus bxi 2610 1)hifonics zeus zxi6410 3)Alpine sps-600c 2)Fi BL d1 15s fully loaded Link to comment Share on other sites More sharing options...
sully Posted March 9, 2010 Report Share Posted March 9, 2010 Compare the idle output more than the max output, you will be surprised how much time you spend at lower RPM's Quote 2003 Ford F-150 Reg Cab layin body on 26's 2003 Tahoe 3/5 drop on 26's with a 408cid Supercharged engine. 2011 Camaro 2SS 2005 VW GTI Stage II ECU, CAI, 3" turbo back exhaust, FMIC, lowered 2" on some plastidipped 18's 2003 Hayabusa lowered, stretched, cams, nitrous and custom paint Link to comment Share on other sites More sharing options...
ccrider540 Posted March 9, 2010 Author Report Share Posted March 9, 2010 Compare the idle output more than the max output, you will be surprised how much time you spend at lower RPM's ya i just checked it out and it makes almost 30 more amps at idle, that is im atlkin about the 260 vs the 300. But do u think ill be fine with the 260 amp alt for the three amps i have? Quote 1)Alpine CDA-117 1)hifonics brutus bxi 2610 1)hifonics zeus zxi6410 3)Alpine sps-600c 2)Fi BL d1 15s fully loaded Link to comment Share on other sites More sharing options...
sully Posted March 9, 2010 Report Share Posted March 9, 2010 I would personally rather have 30 more amps at idle than 40 at high rpm, that's just my opinion Quote 2003 Ford F-150 Reg Cab layin body on 26's 2003 Tahoe 3/5 drop on 26's with a 408cid Supercharged engine. 2011 Camaro 2SS 2005 VW GTI Stage II ECU, CAI, 3" turbo back exhaust, FMIC, lowered 2" on some plastidipped 18's 2003 Hayabusa lowered, stretched, cams, nitrous and custom paint Link to comment Share on other sites More sharing options...
ccrider540 Posted March 9, 2010 Author Report Share Posted March 9, 2010 I would personally rather have 30 more amps at idle than 40 at high rpm, that's just my opinion thats what i was thinking. ill take ur word for it man thanks for the help Quote 1)Alpine CDA-117 1)hifonics brutus bxi 2610 1)hifonics zeus zxi6410 3)Alpine sps-600c 2)Fi BL d1 15s fully loaded Link to comment Share on other sites More sharing options...
mr.p Posted March 9, 2010 Report Share Posted March 9, 2010 unless your a dick and blast at a STOP light or in a parking lot (even then) you should go for the up top. just remember when you give a demo to giver her a little throttle. Quote DCAUDIO BALLS DEEP Link to comment Share on other sites More sharing options...
Guest DC Power Kyle Posted March 11, 2010 Report Share Posted March 11, 2010 http://www.dcpowerin...ruth-about-idle and it's not always the case that a large alternator has poor output capabilities. We have 400 amp alternators that do 160~ at idle. It's just all in the design Quote Link to comment Share on other sites More sharing options...
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