(Topic ID: 304748)

Williams Sound Board Conversion: Taxi --> Cyclone

By GLSP3022

2 years ago


Topic Heartbeat

Topic Stats

  • 20 posts
  • 6 Pinsiders participating
  • Latest reply 2 years ago by barakandl
  • Topic is favorited by 2 Pinsiders

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#3 2 years ago

This is the section that is not stuffed/populated.

cvsd_lane.jpgcvsd_lane.jpg

There are some component value differences between 11A, early 11B and late 11B. Note the values on the board and in the manual and cross check to be sure. The value differences will likely affect volume levels (mixing) between the lanes.

The value differences are not limited to the CVSD lane. The differences are across all the lanes.

#13 2 years ago
Quoted from ChrisHibler:

DumbAss ... If you have the component values that vary across the System 11 models, I'd love to add that info to the PinWiki.

Sorry I don't have the time to better present the material (i.e. a more readily consumable form). I am trying to finish off some loose ends and I am coming in warm to hot to complete the tasks before a hard deadline (that you are already aware of).

When I was building the reproduction board capture I collated all the different values. Everything is based on the manual BOM but I did verify some of them with different boards from actual machines. I didn't verify it against every board from every different machine as I only have a few System 11 games.

These are the value differences. The jumper selection (A, B or C) aligns to the resistor value above.

01_values.jpg01_values.jpg

These are the selection criteria (A, B or C) grouped by games.

02_groups.jpg02_groups.jpg

Cyclone and Taxi only differ in the value of R16 (corresponding W16 in the table). The difference is 6.8k to 10k. You have already noted that. Fortunately Cyclone and Taxi are groups A and B. If you try to change boards between groups 1/2 to 3 there are many more notable value changes.

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