I also own one, early 80's and created a stereo balanced XLR line out on it to connect to the band's PA mixer. The end stage is a true, fairly flat stereo (2 channel) amplifier. The part that makes it mono is the noisy mono pre-amp, having it's inputs at the front. The famous built-in chorus and vibrato effects in the pre-stage however have an internal stereo output connected to the end stage that creates the famous broad and rich stereo chorus that made this amp a succes. The solid state 2x60W end stage and superb Roland speakers are a great combo to produce a powerful and rich, noise-free sound. So what I do, running the beast as a keyboard amp, I use the 2 main in's at the back as stereo input. (not the line in which is mono). Then the pre-amp is bypassed by the built-in switch at the main-in connectors and the noise is gone. That however causes the front inputs being blocked as soon as you plug in to the main in inpus. This also opens opportunity for guitarists. You could use a high-end stereo pre-amp as a top and run that into the JC-120 main inputs, having all the modern facilities like (stereo) effect send-return etc. I'm not sure if the same scenario is to be used on modern JC-120's
Hello, I was actually watching for one but your video makes me have some doubt... Is the new JC-40 true stereo? From roland website: from 2015 "JC-40 First feature in JC history, stereo input. [...]"
JC-40 and JC-22 are true stereo with dedicated L & R inputs. I own both & a JC-77. JC-77 is High & Low inputs. Roland really should make a JC-True Stereo amp sim pedal or 120 stereo head these days!
I also own one, early 80's and created a stereo balanced XLR line out on it to connect to the band's PA mixer.
The end stage is a true, fairly flat stereo (2 channel) amplifier. The part that makes it mono is the noisy mono pre-amp, having it's inputs at the front.
The famous built-in chorus and vibrato effects in the pre-stage however have an internal stereo output connected to the end stage that creates the famous broad and rich stereo chorus that made this amp a succes.
The solid state 2x60W end stage and superb Roland speakers are a great combo to produce a powerful and rich, noise-free sound.
So what I do, running the beast as a keyboard amp, I use the 2 main in's at the back as stereo input. (not the line in which is mono).
Then the pre-amp is bypassed by the built-in switch at the main-in connectors and the noise is gone.
That however causes the front inputs being blocked as soon as you plug in to the main in inpus.
This also opens opportunity for guitarists. You could use a high-end stereo pre-amp as a top and run that into the JC-120 main inputs, having all the modern facilities like (stereo) effect send-return etc.
I'm not sure if the same scenario is to be used on modern JC-120's
Hello, I was actually watching for one but your video makes me have some doubt... Is the new JC-40 true stereo? From roland website: from 2015 "JC-40 First feature in JC history, stereo input. [...]"
JC-40 and JC-22 are true stereo with dedicated L & R inputs. I own both & a JC-77. JC-77 is High & Low inputs. Roland really should make a JC-True Stereo amp sim pedal or 120 stereo head these days!
Had the original from the 80s
That thing is even more static noise then the new one.