My Final Project

I am thinking of making a speaker capable of creating rotation effects in the sound. Musicians from a variety of genres could use this speaker to modify and enhance their sounds.

My sketched

Inspiration

I am referring to Leslie speakers, which are specialized sound devices commonly used with musical organs, keyboards, and guitars, producing a rotating modulation effect. These speakers are known for their distinctive sound, often associated with musical genres such as jazz and rock..

1969 leslie speaker

Step 1

I started with the internal part of the speaker. In the first drawing of the speaker, I had planned to put three buttons with three different pre programmed speeds, but once I got into the project, I decided it would be better to use a knob to control the motor speed. With this concept, I designed the following circuit tha is extremely simple yet functional, which consists of an NPN transistor, a 10k potentiometer, and the DC motor.

For the audio, I will use an LM386 audio amplifier, a 220uF 16V electrolytic capacitor, a 10k potentiometer, a 5mm female mini jack, and a speaker of one watt or higher.

I tested the circuit and the audio is really bad; the speaker makes a lot of noise and the sound is barely distinguishable :( I will make changes to the circuit.