Williams System 6, 7, 9 Sound Board

Price: $95

Machine Name

This is a drop in replacement for the Williams D-8224 Sound Board. Same as all the other Kohout Enterprises boards, it uses new components (when available), and replaces any obsolete components to keep your machine running for another 20 years. It is particularly important on this board because of the large capacitors used for the power supply and the amplifier section, which do not age well, causing poor performance, such as bad humming. Capacitor technology has also improved greatly since 1980, as can be seen on this board.  The same value capacitors require about half the room of the original, leaving extra space for larger heatsinks to keep the regulator and amplifier running cooler.

This sound board was used in a variety of Williams pinball machines as well as some arcade games. Unlike the original Williams board, the jumpers are clearly labeled and easily changed without soldering, so anyone set up the board for their application with little work.

This board is built on a 0.094″ board instead of the typical 0.063″ board.  This makes a HUGE difference in the rigidity of the board.  You can feel a difference just holding the replacement board and it makes a BIG difference when installing while removing or installing the connectors as it greatly reduces the chance for stress cracks.

System 6 and System 7 pinball machines that use this sound board with a speech board include:

System 6 and System 7 pinball machines that use this sound board without a speech board include:

Shuffle Bowlers that use this sound board include:

Video Games that use this sound board include:

The board can be used in older Williams system 4 pinball machines that used the previous version sound board that are rectangle.  The board can be used as long as slight mounting modification are made.  These machines include Phoenix, Stellar Wars and Flash. 

This board comes supplied with a EEPROM and configured for the game of your choice from the list above, so be sure to provide the correct machine when ordering. This EEPROM will be one of the few I.C.s on the board that will not be new, along with the Motorola 6802 Microproccesor and Motorola 6821 PIA.  Changing these would require a code conversion and specialized EEPROM.  As a result, these three devices may not be “new” devices, however they are readily available from multiple sources.

The new Kohout Enterprises System 6/7 Sound Board mounted in the backbox with original Williams speech module:
The original Williams D-8224 Sound Board