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Wiring, Electrical & Installation
Will my alternator handle my audio system?
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<blockquote data-quote="nik_72" data-source="post: 8218554" data-attributes="member: 659467"><p>I have a 2010 ford focus and I will soon be adding a sub. I have read online that some car alternators can't handle large amp.</p><p></p><p>Now I haven't decided if this is the exact items I will go with but the specs around what I want.</p><p></p><p>Amp-</p><p></p><p><a href="http://www.crutchfield.com/p_500MRPM500/Alpine-MRP-M500.html?tp=35834#accessories-tab" target="_blank">Alpine MRP-M500 Mono subwoofer amplifier — 500 watts RMS x 1 at 2 ohms at Crutchfield.com</a></p><p></p><p>Sub-</p><p></p><p><a href="http://www.crutchfield.com/S-I0grmgmc7yo/p_13612W3V32/JL-Audio-12W3v3-2.html?tp=111#details-tab" target="_blank">JL Audio 12W3v3-2 W3v3 Series 12" 2-ohm subwoofer at Crutchfield.com</a></p><p></p><p>Already in the car, I have installed 4 6x9 kicker speakers in the doors (can't remember the specs) and when I install the sub I will be adding a double din head unit.</p><p></p><p>Now to the main question, will my alternator be able to handle the sub/amp without effecting the electrical system? I searched on the internet and from what I can find, the stock alternator has an output of 120 amps. It that enough to handle everything in the car without damage to the battery or alternator?</p><p></p><p>I know people maybe suggest a cap but that only cover a big hit and not a constant draw, right?</p></blockquote><p></p>
[QUOTE="nik_72, post: 8218554, member: 659467"] I have a 2010 ford focus and I will soon be adding a sub. I have read online that some car alternators can't handle large amp. Now I haven't decided if this is the exact items I will go with but the specs around what I want. Amp- [URL="http://www.crutchfield.com/p_500MRPM500/Alpine-MRP-M500.html?tp=35834#accessories-tab"]Alpine MRP-M500 Mono subwoofer amplifier — 500 watts RMS x 1 at 2 ohms at Crutchfield.com[/URL] Sub- [URL="http://www.crutchfield.com/S-I0grmgmc7yo/p_13612W3V32/JL-Audio-12W3v3-2.html?tp=111#details-tab"]JL Audio 12W3v3-2 W3v3 Series 12" 2-ohm subwoofer at Crutchfield.com[/URL] Already in the car, I have installed 4 6x9 kicker speakers in the doors (can't remember the specs) and when I install the sub I will be adding a double din head unit. Now to the main question, will my alternator be able to handle the sub/amp without effecting the electrical system? I searched on the internet and from what I can find, the stock alternator has an output of 120 amps. It that enough to handle everything in the car without damage to the battery or alternator? I know people maybe suggest a cap but that only cover a big hit and not a constant draw, right? [/QUOTE]
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