Seting gain using a MultiMeter (volts) help

[dab86 10+ year member]

Question. What is the current volts my amp should be putting out for the following setup?

Two dual 4ohm subs.

Wired to 1ohm load.

Subs are rated at 500rms each (1000 rms total).

Amp is mono 1000 watts rms at 1ohm.

What should my voltage be set at when using a multimeter? Test Tone is 50hz.

Should it be 31.6 volts or 63.2 volts?

Thanks!

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[Boomin_tahoe 5,000+ posts]

31.6 volts

 

[n2audio 5,000+ posts]

31-32v assuming the amp is capable of the power it claims.

 

[2RZ-FE 10+ year member]

I did the whole multi meter thing but with actual music as I could still turn the gain up further without distortion. I use music starting with the sub amp and then do the highs blending it in as much as I want

 

[dab86 10+ year member]

At 31.6 volts it def does not sound like 1000watts rms...i can turn the gain up more with no distortion. At 31.6 volts, the gain is half way up with 0 bass boost and my lc7i bass channel is turned way down with zero accubase.

 

[wew lad 5,000+ posts]

At 31.6 volts it def does not sound like 1000watts rms...i can turn the gain up more with no distortion. At 31.6 volts, the gain is half way up with 0 bass boost and my lc7i bass channel is turned way down with zero accubase.

buy a portable osilloscope for $70 and set it at the amps clipping point regardless of ratings

 

[n2audio 5,000+ posts]

yes, setting for 31.6 is very conservative. If you're using a 0db tone you're basically insuring the amp will never clip at all. Realistically, it will never get close to clipping because most music rarely gets to the 0db level.

Setting it for a little clipping at high volume is not dangerous.

I have often seen -3 and even -6 tones recommended for setting gains.

 

[Jeffdachef 5,000+ posts]

dmm method is severely flawed and doesnt take account in any thing and everything that important.