Opening the back of a closed-back guitar cab

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Opening the back of a closed-back guitar cab

Postby Rusty the Scoob » Wed Oct 31, 2012 10:46 am

So another forum member has a 1x12" closed-back cab that he'd like me to convert to open-backed, to hold one K120. I'm thinking: why not cut the hole in the shape of a lightning bolt with a jigsaw? Would that allow enough air to pass?
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Re: Opening the back of a closed-back guitar cab

Postby JonnyBoy » Wed Oct 31, 2012 11:15 am

Rusty the Scoob wrote:So another forum member has a 1x12" closed-back cab that he'd like me to convert to open-backed, to hold one K120. I'm thinking: why not cut the hole in the shape of a lightning bolt with a jigsaw? Would that allow enough air to pass?




Actually every little bit you leave has an effect, i think. I had a cross cut out on the back, not for religious reasons, but for support/a place to mount a jack plate, that really wasn't needed after all. It had about 2/3 of the back opened. It sounded better when I got rid of it (totally open), not huge of a difference, but some. YMMV. I have no idea how geometry and physics affect tone in this circumstance. It may have been how I had the back opened. I would make it kinda big?
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