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In the Forum: Horn-Loaded Speakers
In the Thread: Another time aligned 5-way horn project
Post Subject: Three octaves onlyPosted by anthony on: 10/15/2015
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 Murataltuev wrote:
 Paul S wrote:
Mura, it sure seems like a good 12" driver would be OK above 300 Hz. So, what's up?

Best regards,
Paul S
I'm not sure that it is driver issue. May be 42hz horn equalization is effective only in 70-300 range.Real measurements are completely matched with the model!

You get three octaves of horn loading and then the horn attenuates the signal at 24db/octave below the lower knee and 6dB/octave above the upper knee.  So a horn with a lower knee of 42Hz will have an upper knee of about 336Hz regardless of the driver, and will attenuate higher frequencies at 6dB/octave.

EDIT:  Have you figured out why 42Hz is about 15dB down? 

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