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Old 8th November 2011, 03:16 AM   #21
diyAudio Member
Join Date: Feb 2008
Location: Jackson,michigan
With raised voltages to 7.5kv (Drive RMS and Bias) to compensate for the increased D/S of 3/16" it calculates about 98.5db at 150hz ,104.5 at 300hz and 110db at 600hz.

According to the simulator.

So this is a pretty good guestimation at 4 meters so you can add another 12db to these figures for 1 meter.

That my friend is quite loud.

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