Perhaps that GOTO hole centred on about 225Hz is to do with using the incorrect throat in the horn? First thing I would do is extend the profile of that big horn so that it reaches the correct throat size for the GOTO units. It is going to be much longer than 2m long though: small diameter driver = longer horn...there is no way around it. You may be able to mitigate this by using a tractrix horn profile because they are shorter than most of the others.. |
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