Help please Roland Cube CH 60 (Cube Chorus) schematic needed

[Panacha]

Hello guys!
I'm working with this amp and it isn't easy to me to find a trouble in the preamp section.
I found in a thousand sites schems about Cube 60 (Orange), but this is a bit different...
Thanks a lot!
Best,
M

[nosaj]

Hello guys!
I'm working with this amp and it isn't easy to me to find a trouble in the preamp section.
I found in a thousand sites schems about Cube 60 (Orange), but this is a bit different...
Thanks a lot!
Best,
M

So this is not it? https://www.manualslib.com/manual/13...-Cube-60d.html
What is the amp doing or not doing?

nosaj

[Panacha]

Hi nosaj, thanks!
Nop...
It's a old one...like the old orange, but with a basic chorus built in. From the 80's...all discrete, FETs 2SK117 and OP JRC4558...
The amp have a variable hiss (like an open imput), works in his overdriven mode like a clean chanel, and with very pour volume at the max. in the normal input.

[Enzo]

Is it a Cube-60 or a CH-60? I get the impression those are two different models. And always include Roland in the search window.

[nosaj]

Hi nosaj, thanks!
Nop...
It's a old one...like the old orange, but with a basic chorus built in. From the 80's...all discrete, FETs 2SK117 and OP JRC4558...
The amp have a variable hiss (like an open imput), works in his overdriven mode like a clean chanel, and with very pour volume at the max. in the normal input.

How about a pic of the circuit board and the amp? Even without a schematic we should be able to logically work it out.
nosaj

[nosaj]

How about a pic of the circuit board and the amp? Even without a schematic we should be able to logically work it out.
nosaj

Think I found it. http://www.freeinfosociety.com/elect...ew.php?id=1327
nosaj

i just don't see the jrc 4558 though

[Panacha]

Think I found it. http://www.freeinfosociety.com/elect...ew.php?id=1327
nosaj

i just don't see the jrc 4558 though

Very close...it is similar to that (same period I suppose), but with the chorus and discrete reverb driver...I had this schem, and the pre is similar but not equal.
Thanks!

[Panacha]

Yes, asap I will upload the pics.

[Panacha]

Hi Enzo,
the model name is Roland Cube CH-60, near 1983...
thanks!

[doctor]

Yes, asap I will upload the pics.

Try this:
https://www.dropbox.com/s/pdtwlo2u8u...me%7D.pdf?dl=0

Direct uploading to this page does not work.

[nosaj]

Try this:
https://www.dropbox.com/s/pdtwlo2u8u...me%7D.pdf?dl=0

Direct uploading to this page does not work.

Actually when you reply look for the go advanced button, then scroll down to manage attachments which will give you the file upload manager.
I've only had a problem when files exceed the 4.5meg mark.

nosaj

[doctor]

It's a procedure, which I used all the time.
Today it does not work.
File's size is only 570KB.

[nosaj]

It's a procedure, which I used all the time.
Today it does not work.
File's size is only 570KB.

Cube CH-60 {Scheme}.pdf


Here it is.

nosaj

[doctor]

Perhaps I have some problems with my local Internet.
But if you want, you can always find a way out.

[nosaj]

Hi nosaj, thanks!
Nop...
It's a old one...like the old orange, but with a basic chorus built in. From the 80's...all discrete, FETs 2SK117 and OP JRC4558...
The amp have a variable hiss (like an open imput), works in his overdriven mode like a clean chanel, and with very pour volume at the max. in the normal input.

Ok we have a schematic for you now. If effects are off. And you plug a guitar into Main In Do you hear the hiss? (albeit vol Will be low).
Now if you have a second amp with a Main In Take your roland with a guitar plugged into Normal(then Overdrive) >Pre OUT into Main in on second Amp Do you have the Hiss?

Thanks,
nosaj