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Message: <blockquote data-quote="aceorama1" data-source="post: 5623029" data-attributes="member: 606076">I am planning on installing two 12" Alpine Type-R's in my car. I have been looking at a few different wiring options and I was wondering if someone could tell me1. the advantages of wiring dual 4ohm subs down to 1 ohm to an amp... or wiring dual 2ohm subs to 4ohms and back down to 2ohm into the amp.2. If i run them between 1000 and 1200 rms am i going to need to upgrade anything in my car? (i have a 2009 bmw 128i) and if so are we talking the battery or will it need to be the alternator?3. will i have to run a bigger power wire from my amp to my battery? or anything else thats going to become a problem?Thanks in advance</blockquote>

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