El: Thanks for taking the time to not only perform the testing that you did, but for sharing the results with us. I look forward to your confirming both your earlier test results and my prior comments in your next post : ) Sean
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PS... Try a bandwidth limited signal for greater accuracy. The larger / heavier / less efficient the driver, the more apparent the variances in drive levels will be until the threshold or "knee" in the curve is reached. After that, the input / output ratio should remain relatively consistent until driver compression comes into play. As can be seen by your initial testing, this is exactly what took place and what i said would happen.
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PS... Try a bandwidth limited signal for greater accuracy. The larger / heavier / less efficient the driver, the more apparent the variances in drive levels will be until the threshold or "knee" in the curve is reached. After that, the input / output ratio should remain relatively consistent until driver compression comes into play. As can be seen by your initial testing, this is exactly what took place and what i said would happen.