1981 Roland Jazz Chorus JC-120 Microphonic Troubleshoot

[msmith2013]

I recently purchased a Roland JC-120 from a music studio that had been sitting in a garage for a few decades. Upon plugging the amp in to begin tests, I noticed...

[michaelbarrett1]

Jazz Chorus amp chorus and vibrato not working. I think this is the 1984 model. I have opened it up and am looking for help. Trying to figure out what is...

[michaelbarrett1]

Looking for schematic and help repairing chorus and vibrato. I can almost hear it but it is faint.

[zulu89]

Hello!

And first of all, thank you in advance for any guidance or help anyone can provide me with.

I recently picked up a dirt...

[Brad707]

Hi, can anyone tell me whether it is possible to mod a JC120 and send channel 1 to power an external 2 x 12 cabinet, while channel 2 powers the inbuilt 2...