Coleco ADAM Sound Enhancer

$30.00

The Coleco ADAM Sound Enhancer board plugs into the Expansion Port on the ADAM computer. It contains an AY-3-8910 programmable sound generator chip and 74 series logic chips.

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Description

The Coleco ADAM Sound Enhancer board plugs into the Expansion Port on the ADAM computer. It contains an AY-3-8910 programmable sound generator chip and 74 series logic chips.

Some more information is available in this AtariAge thread. The board was designed by chart45 and the original PCB can be found at https://www.pcbway.com/project/shareproject/ColecoVision_Adam_sound_chip_Ay_3_8910_030010b9.html

This board works out of the box with RF (TV) output but if you are using the AUX VIDEO port (composite) then the ADAM needs to be modified to fix a design flaw that causes audio from the expansion port to be quiet. The modification requires moving a soldered wire and optionally adding a capacitor. More information is available in this Service Bulletin (PDF).