Univerisal Bolt pattern

There must be a bolt pattern that allows you to fit any of the common 18" drivers!

Any one looked into it?

Clamps are one option but i would prefer cleverly located mounting holes

Not being the most accurate wood worker I recently made the desision to always use clamps. God I hate T nuts smiley35

Here are a few of the 18" I found:

[attachment=5:2c0saoyd]<!-- ia5 -->18lw1400.jpg<!-- ia5 -->[/attachment:2c0saoyd]
[attachment=4:2c0saoyd]<!-- ia4 -->18nw100.jpg<!-- ia4 -->[/attachment:2c0saoyd]
[attachment=3:2c0saoyd]<!-- ia3 -->1800i.jpg<!-- ia3 -->[/attachment:2c0saoyd]
[attachment=2:2c0saoyd]<!-- ia2 -->1850.jpg<!-- ia2 -->[/attachment:2c0saoyd]
[attachment=1:2c0saoyd]<!-- ia1 -->v1200.jpg<!-- ia1 -->[/attachment:2c0saoyd]
[attachment=0:2c0saoyd]<!-- ia0 -->ftr18-4080hdx.jpg<!-- ia0 -->[/attachment:2c0saoyd]