Upgrading Electrical For First Time?


Ryann627

CarAudio.com Newbie
Aug 19, 2021
3
1
Pennsylvania
I just purchased a 2000 Chevrolet cavalier LS 4DR. I am going to be purchasing (2) Sundown X 12 2 ohms (1500 watts a piece) and (1) Crescendo Bass Clef 6000W Amp In the next coming weeks. I will be custom building my box.

I was wondering what electrical upgrades I will need to power this system since I’ve never run this much power before to a car audio system. I was thinking 370 AMP alternator (with big 3 kit), capacitor and extra battery. Any other ideas on what else I would need?

side note: Do you guys think this system is gonna slam? Haha

thanks I’m advance :)
 

Dafaseles

CarAudio.com Regular
Nov 12, 2020
208
76
510
I just purchased a 2000 Chevrolet cavalier LS 4DR. I am going to be purchasing (2) Sundown X 12 2 ohms (1500 watts a piece) and (1) Crescendo Bass Clef 6000W Amp In the next coming weeks. I will be custom building my box.

I was wondering what electrical upgrades I will need to power this system since I’ve never run this much power before to a car audio system. I was thinking 370 AMP alternator (with big 3 kit), capacitor and extra battery. Any other ideas on what else I would need?

side note: Do you guys think this system is gonna slam? Haha

thanks I’m advance :)
No cap. They're crap and pointless.
I assume you'll be running the system at 2 ohms? So about 3000-3500 watts?
If so, then yeah, if you can get 2 batteries in there equaling about 140-160 amp hours (ah), along with that 370 (assuming it's a quality brand, not some e bay junk) you should be good.
 
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Ryann627

CarAudio.com Newbie
Aug 19, 2021
3
1
Pennsylvania
  • Thread Starter Thread Starter
  • #3
No cap. They're crap and pointless.
I assume you'll be running the system at 2 ohms? So about 3000-3500 watts?
If so, then yeah, if you can get 2 batteries in there equaling about 140-160 amp hours (ah), along with that 370 (assuming it's a quality brand, not some e bay junk) you should be good.
For the amp I was either getting MechMan or JS Alternator for around 270 AMP. Batteries unsure of at this point.

Do you think I will need the 6000 Watt amp? Or can i go with the 3000W Crescendo. I know alot of people say sundowns usually can take more wattage/load than what they're rated for.
 

Dafaseles

CarAudio.com Regular
Nov 12, 2020
208
76
510
For the amp I was either getting MechMan or JS Alternator for around 270 AMP. Batteries unsure of at this point.

Do you think I will need the 6000 Watt amp? Or can i go with the 3000W Crescendo. I know alot of people say sundowns usually can take more wattage/load than what they're rated for.
If you have dual 2 ohm subs, your final impedance options are 8 ohm, 2 ohm, or .5 ohm. So if you want to send those subs close to their rated power (if they're v2's, the v3's RMS is 2000 watts), you'd need the 6000 unless you wanted to run at .5 ohm, then the 3000 would be fine. Though, I'm not super familiar with cresendo warrantees, running the amp at .5 ohm might void the warranty.
You said in the first post you where going to run a 370 amp alternator. If you can get one that big from mechman or JS, I would go with that. In my opinion, don't skimp on the alternator. That's the heart of it all.
Like I said, 140-160 ah of AGM battery should keep you going, or you could go lithium and just use a single battery, though you can't put it under the hood
 

Popwarhomie

Team Lethal Pressure
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They make a 370 for a cavalier???

I would go 240-270 if you are going to daily drive this car. Then 40ah of Yinlong lithium.
 

Ryann627

CarAudio.com Newbie
Aug 19, 2021
3
1
Pennsylvania
  • Thread Starter Thread Starter
  • #6
They make a 370 for a cavalier???

I would go 240-270 if you are going to daily drive this car. Then 40ah of Yinlong lithium.
Just ordered the alternator, 270AMP Mechman for $399. Have to wait on batteries and all that but thank you for suggestion, will definitely invest in one!
 
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