JBL 2426


I just bought a couple of these. The spec says that the top plate
where the horn is bolted to can be removed so that a 1 3/8 18 TPI
type horn lens can be thread onto the 2426. Does anyone know how
to remove the top plate? Do I just turn it counter clockwise real
hard till it moves or do I need to unscrew 3 screws that are located
on the bottom of the driver, where the binding post are located.
Thanks


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