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In the Forum: Horn-Loaded Speakers
In the Thread: Driver Alignment, and Where to Draw the Line
Post Subject: Driver Alignment, and Where to Draw the LinePosted by jessie.dazzle on: 5/26/2007
Some thinking about Romy's Injection Channel (see the following thread) :
GoodSoundClub - Romy the Cat's Audio Site - The "Macondo Ultimate" MK-XXVII, Revision 432
... brings me to a question that I've had a for quite some time:
When aligning a "normal driver" with a compression-type driver, what point on the "normal driver" should be referenced as that to be aligned with the membrane of the compression driver?
On the "normal driver" viewed from the side :
• Is it the center of the coil at rest in its gap?
• Is it the mounting flange of the basket?
• Or is it somewhere in between?
In the case of a 15" Bass driver, the difference is substantial.
I suppose it is also possible that of the above three possibilities, there is no correct answer, and that such measurements will only get you in the ball park (Macro-Driver-Alignment?)... The final step requiring painstaking trial and error.
Up to now, I have sort of assumed a correct point to be about half way between the coil and the suspension of the "normal driver" (viewed from the side)... And that perhaps it would make sense to reference a point a bit closer to the mounting flange in acknowledgement of the membranes greater area toward the front (due to the conical form).
Anyone have thoughts on what might be correct?
Thanks in advance,
jd* Rerurn to Romy the Cat's Site