Kranny Posted May 25, 2009 Report Share Posted May 25, 2009 having dual 200amp alternators, i dont think your voltage would go below 14.5v Quote Link to comment Share on other sites More sharing options...
Dr. Johnson Posted May 25, 2009 Report Share Posted May 25, 2009 I dont think I would go out on a limb and say that since there are way too many unknown variables. Quote Link to comment Share on other sites More sharing options...
lowrider77 Posted May 26, 2009 Author Report Share Posted May 26, 2009 would replacing the yellow top in the back with a powermaster d2700 do me any good cuz theres one locally for sale for 200CND Quote Link to comment Share on other sites More sharing options...
Gregggg Posted May 26, 2009 Report Share Posted May 26, 2009 (edited) Heres the fomula to calculate how much your alt is putting out: AMPS * VOLTAGE = WATTS In your case 140 (140 because 20amps is going to your lights and other electronics) * 14.4 (volts) = 2016 watts Remember that 140 is max, your idle will be putting out less wattage too. I think this is right Edited May 26, 2009 by mccanng Quote 2002 Toyota Solara SLE V6 Headunit - Pioneer DEH P3900MP Door Speakers - Polk Audio db6501 6-1/2" 2-way Component System Rear Speakers - Polk Audio db691 Speaker Amp - DD C4b Sub - 2 12" Alpine Type R's in a 2 @ 33hz Sub Amp - DD M2A Electrical - Big 3 - Stinger HPM 1/0 guage Wires, Optima Yellow Top Battery, 180/120 DC HO Alternator w/ MLA Confuscious say "he who say it can't be done shouldn't be bothering man busy doing it" Now feel free to go crawl back under that rock and leave this to the professionals.... refs: DC_Power_Kyle Link to comment Share on other sites More sharing options...
lowrider77 Posted May 27, 2009 Author Report Share Posted May 27, 2009 well it looks like im pickin that xs power d2700 up this weekend for 150 so we will see wat happens Quote Link to comment Share on other sites More sharing options...
Guest KyleCannon Posted May 29, 2009 Report Share Posted May 29, 2009 (edited) Batteries only allow the voltage to be "cushioned" per say... the alternator is what keeps your voltage up... notice when you turn your car off and your car voltage is at 12.8-13? well thats the max voltage those batteries hold while no alternator is on... the alternator gives you 2+ extra volts on top of that so when you exhaust those 2 volts you're alt cannot produce more power so you're running on batteries... hence more batteries will help cushion the voltage but not increase the voltage... you want more voltage? you need a bigger, better alt. Batteries never hurt though. For the record, look at my sig... then my vids on there as well... thats with one D2400 XS Power Battery at idle. Edited May 29, 2009 by KyleCannon Quote Link to comment Share on other sites More sharing options...
Noobtastic14 Posted May 29, 2009 Report Share Posted May 29, 2009 (edited) If thats true why have alot of batteries like some do. im not doubting you but i dont fully understand that comment. because i bought a H/O at 200 amp and i have one battery and only a 2000 hifonics amp and my lights dim like crazy. Clip Clip Clip -Drew Edited May 29, 2009 by Noobtastic14 Quote I am a United States Military Arts and Crafts Professional. Sand it off, Paint it on. uhoh_45 said: dont be a pussy P give the jeep to drew Link to comment Share on other sites More sharing options...
Guest KyleCannon Posted May 29, 2009 Report Share Posted May 29, 2009 Clip Clip Clip -Drew x2 Quote Link to comment Share on other sites More sharing options...
Noobtastic14 Posted May 29, 2009 Report Share Posted May 29, 2009 Playing with the Oscope i was amazed at how much more the voltage would drop with the slightest clip. guarantee you can support that amp if you had the gain set properly -Drew Quote I am a United States Military Arts and Crafts Professional. Sand it off, Paint it on. uhoh_45 said: dont be a pussy P give the jeep to drew Link to comment Share on other sites More sharing options...
Gotloud555 Posted June 1, 2009 Report Share Posted June 1, 2009 hey guys im still having voltage problems in the truck 2002 blazer 4dr with a 4.3L, right now i got a 160amp alternator(AD244 case) and 2 yellow top batteries everything in knu flex 0 guage, battery grounded thru the body and right on the frame in the back and a pro series MLA running at the 15.3 and if i turn the system up to 28 out of 35 the truck dimms HARD like into the 12s while im driving (gains set with a o-scope). im running a t20001bd(1ohm) and a t8004, and in the future im gonna be running 380c Viair compresser. . . am i gonna need to replace the battery out back with something bigger or add a second alternator? any help will be appreciated thx UHmm, something there don't sound right. Where and what kind of 160 amp alternator you have? From what i heard the 2 yellow top batteries need to be charge before you hook it up. What size optima battery is it you have? Quote Link to comment Share on other sites More sharing options...
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