Here is a little helper/cheater to help you calculate


https://www.rapidtables.com/calc/ele...alculator.html

 

Doesn't work if you don't know how many watts your amp puts out at 2.7 ohms. The only known value is 2.7

 

you want to set to what the speaker can handle not what the max output of the amp is. If the speaker is only rated 100w rms then 200 or 250 would be way to high. Plus, it's only a starting point and shouldnt be your final setting

 

While that does make sense, that's the first time I've heard that. If you read the Sticky or google "Setting Gains with a DMM" speaker rating is never mentioned or taken into account, only impedance.

 

 

And the tune by ear is the part that I bank on. In the long run, like USA says. It's simply a starting point.
Kris

 

Using a DMM has fried more **** than you can imagine when using one to set gains as a complete Noob to Audio. Always set by ear until you have a good feel for what you're doing. Your ears will tell you when it's not right versus trusting a meter reading.

 

Well this isn't quite true you do know the RMS Value of the speaker lets say its 100 Watts RMS Voltage = square root of Watts x Ohms

So lets say you want to know what your voltage setting should be to obtain 100 watts to the speaker with a volt meter the your looking at Voltage = Square root of 100 Watts * 2.7 Ohms which would be Voltage = 10 * 2.7Ohms so Voltage to your speakers would need to be 27 Volts as a starting point

I personally depending on the speaker would start a % of Full RMS watts and then as everyone has said finish tuning by ear when you hear distortion back up a bit on your gains

 

Then there's this.