inverted subs, how to cut hole??

97eXpo · Post by **97eXpo** » Thu Dec 20, 2007 5:32 pm

got my boxes built to 1.8cf per rsd12 and im now ready to cut the opening for the subs...what should i use for the template of the circle?? i took off the gasket and layed that down on the box but the screw holes seem wayyy to close to the cut. doesnt seem to be enough "meat" for the screw to grab onto w/o splitting the wood...anyone know a good diameter for the circle so its not too close to the screw holes or wont rub on the surround?? thanks for the help

444 FED · Post by **444 FED** » Thu Dec 20, 2007 5:37 pm

I usually cut the hole the same as it would if the sub was not inverted.
I can then set the sub into the hole as normal and drill the mounting holes. Remove, and invert the sub.

Enjoy.

dedlyjedly · Post by **dedlyjedly** » Thu Dec 20, 2007 6:02 pm

x2. If you need tighter tolerance I would typically use a large caliper to gauge a smaller diameter that still won't interfere with the surround.

Post by **VW337** » Fri Dec 21, 2007 4:45 pm

take a strip of wood drill a 1/8" hole in on end, measure the cutout for the sub to the 1/32" take half that diameter (the radius) mark that on the wood from the center of the previously drilled hole, now drill a hole big enough for a pencil in the the end of your measurement, you now have a compass to mark out your cut line. place the 1/8" drill through the small point, poke that into the center of your cutout area, draw your circle. Test fit your dimension on a piece of cardboard first if there is any question of your measurements, this will give you an idea of how things line up before you waste the wood.