i just bought a multimeter and wanna set the gains on my jl 500/1 amp, but i cannot find a 50hz sinewave test tone at 0db, does anyone have one then can send me please?

 

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very funny. do a search on google for nch test tones. They have a free tone generator that you can download and save to a disc.

This should be sufficient. However, I have heard that nch tones are not at 0dbs but attenuated very slightly. This shouldn't make that much of difference though.

 

Here is the link for the NCH generator
http://www.nch.com.au/tonegen
you can set up the wave to 0db in the relative amplitude option.