I upgraded the speakers on NGG yesterday. There’s no need to spend big bucks on an aftermarket pinball speaker set when you can do it yourself.
Changing the lower speaker to a 6.5″ sub woofer and swapping out the left back box speaker with a 5.25″ automotive speaker is easy. The tricky part is changing the right tweeter. Unlike older Bally / Williams games that used a wooden panel and plastic overlay, the later WPC95 games went with a cheap looking generic panel and plastic speaker insert.
The right side speaker hole is too small and the insert must be removed. To replace it and make the new speaker fit, I built an adapter out of 1/2″ MDF panel. It’s a pretty straight forward job. Once the old insert is removed, trace it on the MDF panel and cut it out. Then drill out all the smaller holes that will align it properly in the panel. The speaker hole will be a 5″ hole cut exactly in the middle of the panel. A 5″ hole saw is perfect for the job and makes it look perfect. The final step is to paint it semi-gloss black.
The new adapter plate is mounted with screws and simply mount the speaker directly to it. Rewire the new speakers to be in series instead of parallel and you’re done. I used Soundstorm SSL F252 5.25″ speakers because they were blue and matched the game. They look and sound great!
Here’s a link to Amazon where I bought the speakers. Click Here.