I picked up a $10 blue toy megaphone/voice changer. It comes with 5 switches down the site to choose different voice changin effects.

After removing the PCB from the plastic case, replacing the microphone with a 1/4″ in, and the speaker with a 1/4″ out. Removing all the plastic switches, drilling out the holes, replacing with metal toggle switches. Finding a way to rewire the LED’s that show the audion level. Finding a way to supress the op/amp chip with a giant resistor so it doesn’t increase the volume 10 times. All I needed to do was stick it in a temp hardboard panel and mount it in my eurorack.

I rather like the effects, they really are very nasty.

It would be great if the intensity of each effect was controllable with a knob, but I tried and nothing seemed to work.

It would be great if the toggles could also be fired with CV triggers, but I have no idea where to start.

So for now, this is it.

I’ll find a link to the actual megaphone and will post here soon.

edit:

There’s a picture on the right of what I started with, it’s not my picture, just one I found on flickr that was the same.

Initial Inspiration came from Casper Electronics

http://casperelectronics.com/​finished-pieces/​megaphone/​cm2/​

Here we go…

http://cgi.ebay.com/​Multi-Voice-Changer-10-VOICE-EFFECTS-NEW-Megaphone_W0QQitemZ220694348490QQcategoryZ106259QQcmdZViewItem