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RE: Hornresp 1st pass - comments/critiques welcome. 40hz "L" horn




Your right about length, that defines the lowest F it can have any gain over a direct radiator.

You posted a drawing of an old friend, the A-7. I wasn't sure i had the measurements but i found them.

In 2003 i rebuilt a pair of them for a good cause and he didn't care what i did.
If i have seen anything in my life, it is that driver properties and the ability to model things have actually made a pretty big and for me giant difference at work and worth considering drivers when building.

So here i have posted that Altec A-7 with the normal drivers and ones i picked.
For hf it's a bms 4550 an excellent driver and keeping it at least partly Lansing a JBL2226 which i had on hand and looked good at the time.

Notice the difference, on the low end and top end a very noticeable diffidence in raw bandwidth (there is no crossover involved here, these were measurements for figuring that out).

When done, this was a considerably wider bandwidth and flatter speaker than it started and sounded good.



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