jc77 into external cab

[feet]

i have an old jc77 (has the roland heavy duty transducer speakers) and i was thinking about trying it out with the other cabs i have lying around. it has a mono and a stereo out, but it doesn't say anything about ohms or what have you. the speakers are also unlabeled as far as ohmage.

anyone happen to know the values, and what is safe to plug into? thanks!

 

[feet]

bump

 

[feet]

its time we got over our reservations about discussing this matter

 

[feet]

bump

 

[Michael Hunter]

Have you tried looking for a schematic? There's schematics on the Internet for almost everything if you look hard enough.

 

[feet]

found a schematic for the 120 here: http://music-electronics-forum.com/t23346/,
which is as close as i got. i have no idea how to read the thing.

 

[musicman1]

I have a JC90 and as far as I can tell there are no spkr outs on this amp. Mine has a stereo efx loop and a line out to go to a console. Can you post a pic of the back of your amp? I did not think that Roland put spkr outs on these combos.