rockford alternators
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=80935
Printed Date: April 18, 2024 at 7:43 AM
Topic: rockford alternators
Posted By: derrickg
Subject: rockford alternators
Date Posted: July 29, 2006 at 1:09 PM
i wanted to know if anyone has info on these alternators i have a friend that has one that is supposed to be 220 amps with a external voltage reg. i wanted to know what the idle voltage would be.
Replies:
Posted By: derrickg
Date Posted: July 29, 2006 at 1:29 PM
i wanted to know the amperage at idle on this 220 amp unit
Posted By: haemphyst
Date Posted: July 29, 2006 at 10:09 PM
Probably around 65 amps or so. The owner's maual would have the information, I'm sure.
I had a 165A alternator from Alterstart on my Civic, and it was specified to put out 80A at idle. Without a current meter in the system, or without the manufacturers information, there's no way to guess.
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: derrickg
Date Posted: August 02, 2006 at 9:32 PM
the part no. on the alternator is "9290D G" does that help any
Posted By: jazzcustom131
Date Posted: August 02, 2006 at 11:10 PM
I'm gonna prolly sound silly here, but is this rockford fosgate we're talking about? Cause I did a general internet search for Rockford alternators and nothing really came up, it all referenced back to fosgate, but they don't have anything on their page about it.
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Greed is for amateurs.
Disorder,chaos,anarchy now THAT is fun!!
Posted By: derrickg
Date Posted: August 02, 2006 at 11:15 PM
yes it is rockford fosgate it is a old alternator
Posted By: elicoleman
Date Posted: August 03, 2006 at 12:53 AM
I think Rockford should stick to stereo compontents rather than auto parts. There are plenty of high output alternators on the market that the company specialzes in. I don't think I would every buy a Bosch stereo or Delco speakers.
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2003 GMC Yukon, Kenwood 815DVD w/ Nav. Memphis speakers. Kenwood 1200W Amp, Alpine 400W amp. Rear view camera, headrest monitors. Parrot CK3100
Posted By: jazzcustom131
Date Posted: August 03, 2006 at 12:57 AM
lol, well, they don't make them anymore, least not that I can see. Derrickg, I emailed fosgate, should have you some numbers sometime tomorrow ------------- Greed is for amateurs.
Disorder,chaos,anarchy now THAT is fun!!
Posted By: jeffchilcott
Date Posted: August 03, 2006 at 2:17 AM
You arnt by chance rom Missouri are you? I know rockord had some alts made with a rockford badge done for competitors a few years ago and they were 220 at 1200 engine RMS.......this could get interesting.
Post back with what you hear from rockford please!
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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
Posted By: derrickg
Date Posted: August 03, 2006 at 6:57 AM
i am from chicago. i guess that alternator wouldnt be good for a everyday driver 220 amps at 1200 rpm whoa.
Posted By: Custom_Jim
Date Posted: August 03, 2006 at 10:35 AM
Chances are Rockford Fosgate had another company that specializes in alternators and regulators at the time make them and they then had their logo put on it. They might have also spec's the case to be slightly different so it was not easy to compare or have people know who the parent manufacturer was. I remember years ago Alpine when they had security systems first coming out had some Autopage guts in them and back when they started offering the first indash CD players they had Sony transports inside. Jim ------------- 1968 Chevy II Nova Garage Find 2012
1973 Nova Custom
1974 Spirit of America Nova
1973 Nova Pro-Street
Posted By: jeffchilcott
Date Posted: August 03, 2006 at 2:41 PM
its just fine for an everyday driver. amperage must be drawn it cannot be pushed.
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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
Posted By: jazzcustom131
Date Posted: August 03, 2006 at 2:56 PM
jeff, is that saying that when I put in a second alternator, it only creates as much amperage as what's pulled? Or is it always making that amperage. Also, i'm looking at getting into SPL systems, and I heard (though I don't trust the person that said it) when installing secondary alternator systems, batteries are needed. You can just wire stright to your block. That would be false correct?
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Greed is for amateurs.
Disorder,chaos,anarchy now THAT is fun!!
Posted By: jeffchilcott
Date Posted: August 03, 2006 at 7:06 PM
The whole point of a second alternator is generally to charge multiple batteries. I have found it to be best for competiton use to use a Muilti-Alternator regulator, something like what HO-ALTS and Powermaster make. This will sub the outputs of the alternators and you can connect to one battery under the hood, then connect thier to more batteryies in the back of the vehicle.
Thats just the way I run them, but I have seen other setups as well
1 alt per battery bank (1 up front 1 for in back)
aLL ALTS to the back batts then a 1/0 gauage wire from back batts to front batt
There are numerous options but the first I meantioned is what I use
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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
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