Alternator Size - Amp Install
#1
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Alternator Size - Amp Install
I did some searching and reading but couldn't find what I am looking for. I am looking to add an amp or two for subs. At what amp size do you recommend upgrading the alternator? 500w, 1000w, 2000w? And, if I use a cap, does that change the need for a different alternator?
I really don't have any additional mods done to the car. The only thing added is an Escort Passport 9500ix.
I really don't have any additional mods done to the car. The only thing added is an Escort Passport 9500ix.
#2
![Smile](https://www.rx8club.com/images/icons/icon7.gif)
I started selling of things i kept in my RX-8 2008. Only problem i had were to fit the 2x 12" in the trunk. But i built the subwoofer box inside the trunk.
such as
http://cgi.ebay.com/ebaymotors/ws/eB...#ht_964wt_1167
So you can install it like a real navigation system for the Mazda's
Also i used a 2000watt rockford fosgate amp.
http://cgi.ebay.com/ws/eBayISAPI.dll...#ht_812wt_1139
And 2x 12" rockford fosgate subs with it..
The grill i had for em are here.
http://cgi.ebay.com/ws/eBayISAPI.dll...#ht_500wt_1154
such as
http://cgi.ebay.com/ebaymotors/ws/eB...#ht_964wt_1167
So you can install it like a real navigation system for the Mazda's
Also i used a 2000watt rockford fosgate amp.
http://cgi.ebay.com/ws/eBayISAPI.dll...#ht_812wt_1139
And 2x 12" rockford fosgate subs with it..
The grill i had for em are here.
http://cgi.ebay.com/ws/eBayISAPI.dll...#ht_500wt_1154
#3
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I just installed the Pioneer AVH-3200BT with a 900 watt Kicker zx.750 amp, and 2 kicker 12" CVR's..With the custom RX8 subwoofer box on ebay. Kept the bose amp and speakers. THIS SYSTEM ROCKS! Oh and I added a 2 farand Cap which seemed to help a little
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No I havn't noticed any dimming yet. I used to have an Altima with 100A alternator, with a similar setup and the lights dimmed. The RX8 doesn't. Also, if you get the molded box for like $120 of ebay, it fits so perfectly in the back there is no air space, so the bass is so smooth and give zero rattle. I can crank this setup so loud it hurts and it sounds great inside and outside the car.
#8
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As far as amps and watts, it doesn't matter which one you are working with, or a combonation of both. Watts = Amps x Volts & Amps = Watts / Volts
#9
I have a 10inch kicker l5 with a 750watt kicker amp(dont remember the modle) and a cap, but my interior doome and reading lights dim, and when the car is at a stop light and the music i at around 20 and the sub turned alll the way up my RPM flickers lightly and i can for sure tell the diffreance in the cars performance, also if i turn it all the way up and turn my steering wheel everything in my car dies for a sec and my wheel jerks like crazy...
im sure i need a bigger alternator, where can i get one?
im sure i need a bigger alternator, where can i get one?
#10
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Ahhh but it does. In the discussion at hand, we need to look at amplifier efficiency. Having a 1000WRMS class A/B amplifier and a 1000WRMS class D amplifier is a night and day difference regarding electrical load. So although you're spot on with your Ohm's Law, it doesn't give us the whole picture we need for this discussion.
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