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<blockquote data-quote="southkrypt" data-source="post: 8492680" data-attributes="member: 669589">I am confused &amp;amp; concerned on what power output alternator I will need formy car. I have talked to mechanics, people on Subaru Forums and car stereo installers and have been given different answers by all.Car: 01 Subaru Forester S Model(non Turbo)Current Alt (90 Amp) with Big 3 Upgrade(1/0 Awg wire)KNU Kol 1/0 Wire(also have a 6.0 Farad Cap to install in needed)System Setup:Double Din Pioneer Radio(4) Alpine Type R 10&#039;s in Custom Ported EnclosurePower Acoustic 6000.1 Gothic Series Amplargest Deep Cycle Battery that Fits in my car. No extra batteries for system* Subs wired to mono channel at 2ohm. The RMS output of the amp will not exceed 4000 watts.The car is a daily driver, but might go to amateur SPL Comps to see what it can push.I have been told I need a 350amp ALT is needed, Then told by another my 90amp alt would work with a 6.0 farad cap &amp;amp; all the other upgrades I did would work. What size alt do I need. I am trying to keep my electrical system being strained and having the needed power for the amp.</blockquote>

[QUOTE="southkrypt, post: 8492680, member: 669589"] I am confused & concerned on what power output alternator I will need formy car. I have talked to mechanics, people on Subaru Forums and car stereo installers and have been given different answers by all. Car: 01 Subaru Forester S Model(non Turbo) Current Alt (90 Amp) with Big 3 Upgrade(1/0 Awg wire) KNU Kol 1/0 Wire(also have a 6.0 Farad Cap to install in needed) System Setup: Double Din Pioneer Radio (4) Alpine Type R 10's in Custom Ported Enclosure Power Acoustic 6000.1 Gothic Series Amp largest Deep Cycle Battery that Fits in my car. No extra batteries for system * Subs wired to mono channel at 2ohm. The RMS output of the amp will not exceed 4000 watts. The car is a daily driver, but might go to amateur SPL Comps to see what it can push. I have been told I need a 350amp ALT is needed, Then told by another my 90amp alt would work with a 6.0 farad cap & all the other upgrades I did would work. What size alt do I need. I am trying to keep my electrical system being strained and having the needed power for the amp. [/QUOTE]

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