Congrats Bill glad it worked out !!!!!
Congrats Bill glad it worked out !!!!!
Bowtie, I was not aware of the part about the spider shims. Is there some other way I can do this? I do have Mylar shim stock from 0.0005 to 0.030 thickness in sheet form. Maybe I could make one? I was thinking that it was as easy as the small format drivers.
BillWojo
Just got off the phone with Bill at GPA. He is going to send me one in the mail. He also said that it can be centered with a 200Hz test tone and after centering to do a sweep to see if it sounds ok.
Can anybody suggest a good frequency generator for an android?
Thanks
BillWojo
I didn't realize there was any difference between replacing a small and large format diaphragm either. So you have to center it?
I don't know what the appropriate thickness is, most important that the shim isn't too thick such that the assembly gets stuck on the pole. A quick call to Bill at GPA would be definitive.Originally Posted by BillWojo
You could try just plopping one in, if it buzzes, you'll have to loosen the locating dowels and shim it. Take your time, you're working with eggshells and a 30lb hunk of iron.
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Must be you didn't get the memo.
http://www.greatplainsaudio.com/LgDrvrDiaRepl.pdf
The locating pins on lg format drivers are not fixed. They allow you to remove and replace the same diaphragm in situ. But, they do not allow interchangeability like the guide pins on the small format drivers.
Not all vegetables make good leaders.
Ah I was wondering why the guide pins have phillips head screws. That makes sense!
Guess I'll have to do the same thing when I get my new GPA diaphragms
Your new phragms will have the spider shims packed with them.
Not all vegetables make good leaders.
Sweet!
Does anyone know what the 30904 attenuation curve looks like and what varying the components in the attenuator does to that curve? Thanks.
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