In Reply to: Re: Wow! Very interesting! posted by Michaelz on December 12, 2002 at 16:34:10:
The volume of the rear chamber should change if another compression ratio is used. In fact this volume varies lineair with this ratio.For some horns it really makes a difference if the volume is chosen wrong. Might cause 5-6dB bumps! Use McBean to model a rearloaded hyberbolic horn with:
l=2.8m
ah=75cm2
am=850cm2In this case the volume should be kept as small as possible!
Best regards,
Walt
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