Powering 4,000 rms Amp
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=54683
Printed Date: October 31, 2025 at 12:53 PM
Topic: Powering 4,000 rms Amp
Posted By: payback001
Subject: Powering 4,000 rms Amp
Date Posted: April 26, 2005 at 6:19 PM
Ok i have two 2,000rms audiobahn, totaling
4,000rms. My lights dim a LITTLE right now with 1,500rms + 2.4FARAD cap.
I realy can't (don't want to) my ALT in the car so how can i run 4000 watts fine. i was Thincking adding a battey and a 5.0FARAD cap will that work.
Some one plezz help or tell me were i can go for help . thanks.
Replies:
Posted By: Ravendarat
Date Posted: April 26, 2005 at 6:43 PM
Nope that aint gonna help you. THE ONLY WAY TO DO IT, that is run legit 4000 watts rms in a vehicle properly is to upgrade the altenator to a high output altenator. However being that you are under the impression that those audiobahn woofers are actually 2000 watts rms, I would like to know what you actually consider to be 4000 watts rms.
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double-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer
Posted By: payback001
Date Posted: April 26, 2005 at 7:05 PM
ok ya i'am just going by box specs there 2 A1500HCT if that helps any.
So the only thing i can do is change the ALT???????? theres only 1 option???
Posted By: pimpincavy
Date Posted: April 26, 2005 at 7:18 PM
The only way you will be able to power 4,000 watts of amps power is with a HO alt. One that puts out at least 250 amps. You gotta have power to make power. As a side note, those audiobahn amps do not buy out the power they claim they do, you are looking at more like 2500W of power, not 4000.
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Posted By: Mad Scientists
Date Posted: April 26, 2005 at 8:04 PM
Alternators make the power Capacitors smooth the power Batteries start the car Ok, I'm kidding a little on the last one, but all three components are important. Alternators provide the 14v or so that runs the car/electronics.. the capacitor is there to help smooth out the surges when the amps hit hard. The alternator can't change output quick enough to prevent a voltage drop.. so the cap helps supply the power required until the alternator catches up. The battery only comes into play when system voltage hits approximately 12.6v Thoughts? Jim
Posted By: payback001
Date Posted: April 26, 2005 at 8:12 PM
ok THanks so much for your guys help. thanks now I just got to find a Hight volt ALT , i think
Posted By: Poormanq45
Date Posted: April 26, 2005 at 10:17 PM
hehe, check out Harbor Freight. You can get a 10kilowatt 120/240ac generator without the motor. Just connect it via an accessory belt and voila, ready for arc welding on the go  .
Seriously though, you'll need a high output alternator -------------
Posted By: overworked2
Date Posted: April 27, 2005 at 1:29 AM
Jim, I whole heartedly agree, the battery is for starting the car and nothing else, especially if using high powered audio gear, or anything that has a high current usage for that matter. Everything works better at 14.4 then 12......
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Check all advice given with a meter
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