Amp Voltage Calculator?

dako · Post by **dako** » Tue Oct 07, 2008 3:25 pm

Damn, I just went to do some figures for my new amp setup and the calculator that was linked in the DMM amp gain how-to is gone. Does anyone know of a new link or the parameters needed to come up with the voltage totals? I'll be running a Tantrum 1200.1 (1200 x 1 watts nominal) at 4 ohms and a Tantrum 600.4 (75 watts x 4 nominal) at 4 ohms. Thanks!

Post by **Bfowler** » Tue Oct 07, 2008 3:29 pm

i have always used this site:

http://www.bcae1.com/

what exactly are you wanting?

11, 12, 14 or 16 are likly the pages you need

dako · Post by **dako** » Tue Oct 07, 2008 3:36 pm

I'm looking to set the gains with a DMM, but just want to make sure I've got the correct voltage calculations for each amp. I think the last time I did it on the 1200.1, it was around 53 volts or so. I"m not too sure about the 600.4 though. If I remember correctly, i think 75 watts per channel at 4 ohms should be around 17.5 volts? Hmm. Thanks for the link by the way. I'll see if I can find a voltage calculator in there.

Post by **Bfowler** » Tue Oct 07, 2008 3:42 pm

ah, the formula for that is

squareroot (rms watts * ohm load)

so for 1200 watts at 4ohms is 69volts ...but you could probably go for 1400 watts at 4 ohms which is 75volts

and you are right on for the 17.5 number

dako · Post by **dako** » Tue Oct 07, 2008 7:16 pm

Cool. I've got it all dialed in now! And I just noticed, I totally should've checked the How-To section on DMM setting as stipud put a google calculator link in there awhile back after the other link went down. *slaps own forehead*