Good afternoon everyone. I am searching for the maximum voltage I can run on my 99 RX300, yes the 1st gen old man car 🥴. I am in the process of replacing my stock Alt with a 320a aftermarket alt, and adding 2 more to power my audio system. Making a total of 960a of power. The system will consists of 4-10,000+ watt(yes that's 40k watts) amplifiers for the subwoofers, 5-4,000+ watt midrange and highs amplifiers, to push 8-6.5", 4-10", 4-3.5", 2-2.5" super tweeters, and 4-1.5" done tweets. I need to find the voltage limit because I am running 2-90 ah CMAX lithium battery banks, that require 15.0v+. I am also adding in a Sony XAV-AX8100 head unit(400watt) along with more fhan2,000 watts worth of aftermarket external lighting, true 750w tru fiber optic star show ceiling installation. All amplifiers will have Acrylic w/LED backplates. So the total amount of amperage draw is going to be 1,000a max with a constant draw of 600 amps. I need as much voltage as I can get. Thank you all on advance.

 

I'd love to know how you plan on fitting 3 alternators in the engine bay. Not sure if serious.

 

Oh I am 1000% serious. I have an engineer making me a one off bracket and sizing the belt as we speak. They other 2 alts will be located, 1 very close to the frame rail, and 1 almost touching the radiator.

 

750 watt LED ceiling lighting is this for real? Assuming 100 lumens per watt (conservative) = 75,000 lumens this is so insanely bright that it would literally blind you.

....also your math is not mathing 40,000 watts of amplifiers is 3300 amperes there is no way you will be able to wire a car for that.