Weslie Modulator

Here’s the ‘Leslie Effect Simulator’ from March 1971 Popular Electronics. Contributed by Dean Hazelwanter. 1971 was a long time before the advent of the modern Leslie Simulators e.g. Hughes and Kettner Rotosphere, etc. This circuit is nowhere near the type of simulator available on today’s commercial stompbox market. But it is a unique and interesting modulation device. We named it “Weslie” Since it’s not really much like a Leslie, but it does have some wah and warbling.

• 1971 Leslie Simulator Article
• General Build Instructions
• Weslie Modulator Instructions
• Weslie Modulator Bill of Materials
• Weslie Modulator Schematic
• Weslie Modulator Layout
• Weslie Modulator PCB file – For use only if you are a complete DIY person who wants to etch and drill your own PCB. Otherwise, we recommend you ignore this PCB mask and buy the Ready-to-Solder Printed Circuit Board or Complete Kit.
• Weslie Project Revisions History

Buy a Weslie Modulator Complete Kit. Includes all the parts and materials you need to build one, all for about the price you would pay for a PCB and parts.

Would you like a Ready to Solder Circuit Board for this project?