[blueswah]

Does anybody know the diameter of the speaker cut out in a HT style cab?

[hippieguy1954]

I can't remember off the top of my head, but I'm sure someone will. Or just go to the Hard Truckers web site and call them. They are great people and will tell you any dimensions you want to know.

[mgbills]

For JBL's it would be:
281 mm
11-1/16"
or for the fractionally minded....11.0625"

Stolen from http://www.wald-electronics.com/jbl_info.htm

[blueswah]

Thanks!

11-1/16" (or 11.0625) was what I had for three different 12" speakers (non- JBL's)

Sounds like 11-1/6" may be sort of a "standard" opening that could work for many front loaded speakers.

[hippieguy1954]

http://www.usspeaker.com/jbl%20e120-1.htm

Front Mount Baffle Cutout 11.0625" / 281mm

Rear Mount Baffle Cutout 11.0625" / 281mm

Bolt Circle Diameter 11.5625" / 294mm

Sorry if this is already posted.