Gakken Theremin Kit Hack

Step 5 Wire it up

Now is time to wire up the jack. This may require adding in a little extra wire.

First wire SP- (the wire on the right) to both the audio signal tab on the jack and the minus tab on the speaker (where it was just connected). Or, to put another way, wire the audio signal tab on the jack to SP- and the minus tab on the speaker.

Then wire the SP+ wire (the wire on the left) to the tab that connects to the big rounded metal bit on the back of the jack. Wire the + terminal on the speaker to the only other free jack (the tab that connects to the the little metal switch on the inside of the jack). This will turn off the speaker (break the connection) when someone plugs in an audio cable.