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Posted by deafbykhorns on February 21, 2019 at 12:38:17:
You measure 5 volts out when it begins to clip
If you want to check freq response doing manual plots, you can do a frequency sweep starting at 5hz ending at 20K and plot it on paper.
Your meter needs to have a good freq response to do this. Simply plot the voltage as it drops across the sweep. You could simply sweep 5hz, 10hz, 20hz, 30hz, 40hz, and then start at around 12KHZ up to 20KHZ