Menu

Show posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Show posts Menu

Messages - KB0NES

#1
Already ahead of you there. I actually still have the printed manual I got when I bought the amp and I did download a PDF of it too.

A high school friend of mine had a JX30B that we added a HF horn to use for his keyboard amp. Indeed all the variants are likely very similar. If I can't find the actual manual I'm sure I can just inspect and markup the JX30 manual which is likely quite similar.

I saw on another thread where the OP was looking looking for a JX25 manual that he stated he had found one for the JX20, so they must be out there. Funny I can't dig it up with the search engines.

Phil

#2
I just pulled my 1981 Yamaha JX20 amp out of the closet for the first time in decades. Playing around with it a bit and would like to mess with the circuits a little and retro in a digital reverb etc. Looking for service docs/schematic, I've been Googel'ing for a spell and haven't got lucky yet. Found the owners manual and service docs for a JX30 & JX40 (those may be close enough).

Does anyone have a JX20 service manual or have a link to one in an archive that I haven't found yet?

Thanks,

Phil, KB0NES
Burnsville, MN