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In Reply to: RE: JBL 2441Throat Diameter posted by Jim Hodgson on February 25, 2017 at 15:33:09
You're absolutely right - the JBL 2441/2440 throat is smaller than 2" by just about 1/16. God only knows why JBL decided to make them this way. It has no impact on the sound and Dr. Bruce Edgar has routinely used a 2" forstner bit to manufacture mounting plates for 2" JBL compression drivers for his Edgarhorns.
Edits: 02/25/17Follow Ups:
Thanks for the information / confirmation.
I'm wondering if the horn that I have in mind for these, which has a 1-15/16" throat opening (measured carefully -- not based on specs), is going to be too tight for the 2441? I guess that depends on how my particular drivers match up to the "smaller than 2" by just about 1/16" figure you just gave!
I think why JBL did that is to avoid any horn throat obstruction
edge do to mfg. variations and misalignment due to the side
play due to the bolt holes.
Or, am I overthinking this?.
I think that sounds totally reasonable.
It also gives effect to the idea that, if there is going to be a slight mismatch between driver throat opening and horn throat, better the driver throat opening be the smaller of the two ... with the preference for any "step" to be in that direction (i.e., narrow-to-wide as opposed to wide-to-narrow)? Isn't this correct?
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