What size is the oval cutout on a combo?

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Normster
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What size is the oval cutout on a combo?

Post by Normster »

Odd question, eh? I'm about to put the finishing touches on my combo but it's really hard to judge the dimensions of the oval cutout on the back of the Dumble combo. As close as I can figure, it looks like a 5" radius for the arc and 3.5" inside from the edge of the board on all sides. Has anyone actually measured a Dumble?

Thanks,
Norm
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Funkalicousgroove
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Re: What size is the oval cutout on a combo?

Post by Funkalicousgroove »

11.5 x 9. I forget my geometry, but a circle that has a 9" diameter would have a 4.5" radius right? The back pannel is 15" tall. The front and rear baffles on Dumble cabs are 3/4" BTW.
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Normster
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Re: What size is the oval cutout on a combo?

Post by Normster »

Funkalicousgroove wrote:11.5 x 9. I forget my geometry, but a circle that has a 9" diameter would have a 4.5" radius right? The back pannel is 15" tall. The front and rear baffles on Dumble cabs are 3/4" BTW.
Exactly what I needed to know. Thank you Mr. Groove!!! :)
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Funkalicousgroove
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Re: What size is the oval cutout on a combo?

Post by Funkalicousgroove »

I usually cut 2 9" diameter circles, then cut out the middle rather than try to freehand that thing. if that's any help.


Strike that, it's 15 3/4" tall, I was going from memory! Sorry!
Owner/Solder Jockey Bludotone Amp Works
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