Why were Juno 106 made with black epoxy over the voices?

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Why were Juno 106 made with black epoxy over the voices?

Postby NCChao1268 » Wed Jan 03, 2018 6:41 am

This question just popped out of my curiosity; I am wondering why Roland made Juno 106 with the black epoxy/resin covering the voices that causes them to fail over long periods of time. Some say it is to hide their design from competitors, some say to protect the pcb's. What's your guy's input?

-Nathan
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Re: Why were Juno 106 made with black epoxy over the voices?

Postby Broadwave » Wed Jan 03, 2018 8:28 am

It's more than likely there to stabilize the VCF/VCA from temperature and moisture fluctuations. I doubt it was to protect the design as the epoxy is so easy to remove.
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