The chassis is a piece of steel plate bent at a right angle. When the chassis plate was empty I determined how I would mount it to the amp and where I would add new components.
On the inside all the necessary parts of the amplifier are mounted to this bent steel plate.Since it was really scratched and rusty, I decided to take it apart and paint it. This is the part with the knobs and plugs on it. I partially disassembled the amp to remove the chassis. I decided to incorporate it into my design. The amp sounded way batter than it did with its original speaker. When I tested the Leslie I used this small Guitar Research practice amp to drive the Leslie speaker. This basic design could be done in hardwood and stained and sealed or it can be made from plywood and covered in a classic tweed, faux leather or whatever you want. Take a look at the pics for assembly details. I built the cabinet around the board the Leslie was mounted to. My final cut list was-Įverything was cut down on the table saw and assembled with recycled screws from the original dresser.
The leftover laminated particle board pieces were still out on the carport so I decided to use them for the prototype cabinet. I recently took apart a cheap flat pack dresser. The idea was to create a box around the Leslie unit with a solid top, bottom and front and partial sides with large openings to pass the sound. I decided on a total dimension of 16.25"x18.75"x12" to accommodate the thickness of my material.
I measured the baffle shell and the front cone and support frame and found that I needed about four inches in the back and eight inches up front. Since the Leslie is built on a 15"x17.5" board I made that my inside dimensions. There is no need to consider resonance or bass reflex or any other audiophile mumbo-jumbo- just build a box to protect the speaker unit. Since the speaker is baffled in the back this is the easiest cabinet to build. This is a prototype made from recycled and on-hand items. This is not meant to be a beautiful piece of cabinetry.
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