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tonksie93

Second battery, capacitor or neither?

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So i have a 3000w rms system running off a 180a alternator. I have just done the big 3 with 0 gauge but i am still getting some voltage drop with heavy bass hits. I cannot get a bigger alternator than the one currently fitted to my car (BMW F30). I only ever listen to my system with the engine running so i’m not sure if a second battery or capacitor would help or cause more drain?

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I'm running a Rockford t2500-1bdcp and a t1000-4ad on a 240 amp alternator, a Northstar group 31 and a Northstar smsagm220 and I stay in the mid 13s on the most demanding songs. 

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Alternator.  


http://www.stevemeadedesigns.com/board/garage/vehicle/2438-jeep-commander/


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I cannot upgrade my alternator, unless anyone here knows where to get one for a BMW F30?

Would swapping my OEM battery for a AGM one first help with volt drop even if i only play with the engine running?

Edited by tonksie93

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Call custom electrical service in Ohio they seem to be the ones to go to for hard to find alternators they were the only ones that had one for my Ford escape

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If 12.7 is the worse, and its only here and there,.. i wouldnt do anything. If you hold 13,... meh... roll with it. Save your money. 12.7 is battery rest, its just fine. Especially if this is at idle banging.

Is the worse drop with some rev, or at idle ?

Edited by Kyblack76

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