Gottlieb Sys 1 Soundboard with Aux Input added

I added on a 1/8th stereo ( i should have used mono, oh well lol ) jack input.

 

Funny enough it has a spot on the board made perfect for the ground tab of the jack mount, then I soldered a wire to both left and right channel legs to the resistor right before the VR. Then I also have the RCA to 1/8 jack converter temporarily.

 

So I took one of those Plug in TV games and plugged in the RCA audio cable and whammo nice clean adjustable sound coming from the pinball speaker.

 

Now I just need to hook up my individual replacement sound circuits and join them at a hub under the playfield, then run one single male to male 1/8 cable from the hub to the sound board (12ft). This way the cable can be easily removed from either the sound board or the speaker output hub under the playfield for service.

 

More pictures and better details as the project develops. My MP3/WAV triggers should be here tomorrow.

 

All the speaker outputs from each of the 8-10 units will be wired in parallel to a single hub box under the playfield.

 

Unlike other devices this will allow multiple sounds to be played at once at least that's the hope. :)

 

Also again by original design I guess the chime sounds are silenced while the aux input is being used. If you unplug the RCA-1/8th adapter you get your game sounds back, if you want those anyway. :)

 

So basically this mod should qualify as a non permanent modification to any game features.

 

The clamps are holding the audio jack on until the gorilla glue dries. :)

 

Rob

D & D Amusements

Done