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Message: <blockquote data-quote="donpisto" data-source="post: 3650313" data-attributes="member: 568577">I sorta have a feel what you're working with. I have an RF T30001bd and I had it on my stock 90A alt and Odyssey PC 1200 and it got a lot of voltage drop. I threw in a 170A alt and at the amp, not the battery, the voltage was 11.4V with the vehicle on at idle. I'm going to be adding an Odyssey PC 2150 and that should help quite a bit, however I will be putting in another 4 channel and I do want to keep voltage up as high as possible. I want to be clear of the 12V range so I'm adding a second 2150.In my opinion, you would need a deep cycle battery under the hood (as large as you can fit), the big 3, an HO alt, and probably even another large deep cycle in the trunk.</blockquote>

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