Halloo,
Does anyone have JBL published bolt hole circle spec for the K130 or K140 drivers? Looking online I have only found the more general K series pages , which don't give those specific mechanical details for each of the drivers in the series.
Dropping in a couple of 1/4" bolts, getting them as close to straight in as I can and measuring across I believe the distance is 14 9/16" which is very close to the D130's 14 5/8" but not exact.
The D130 spec sheet gives the hole size as 3/16" but the ones on the K130 basket are a generous 1/4" so I think the circles could be different as well.
Splitting hairs maybe but I can't guarantee my measurement was with the bolts 100% straight in and I'm eager not to do anything to distort the rim when it gets tightened down.
My first post , I'd rather be contributing than asking for help, but perhaps when the project is done I'll have something worth showing.
Thanks !