Neither.
I own several and they all have this "feature"......and I'd like to figure out a mod that would retain the extra diode clipping in the red channel, but compensate for the extreme volume loss.
That way I could keep the extra gain/compression at a giggable level.

Looking at the second pic (red channel), you can see where the clipping diodes are switched with the "pull" treble knob.
When you do this there is a huge volume drop in that channel (by design).
I'm trying to wrap my head around a fix for this issue.......keeping the clipping diodes on but compensating for the huge volume loss.

Quote from: J M Fahey on June 07, 2008, 08:11:07 AM
I split my PDF into a few functional blocks:

J M Fahey,
What is the trimmer pot for?

Does anyone have any info on the CFH mod for the Randal 80/100?
I think it's supposed to eliminate a lot of the volume drop caused by pulling the treble knob out which introduces the diode clippers.
anyone?

Thanks for the reply....the RG80 sounds KILLER through the 5150 cabinet!
(I mean...didja' think I hadn't already tried it?)


As far as the channel cloning is concerned.....
One thing is that with two RED channels only the Pull/Treble/sustain works on the original RED channel, so you could switch between standard and diode clipping modes....there's that, I guess.
The guy I picked up the combo from stated that he had already done the channel clone mod to this amp so I gues I'll have to open it up and compare it against the schematic to see what was done.
I was just curious as to whether there was a site or discussion dedicated to modifying Randall amps already in progress.....any info on that stuff in the future is appreciated.
Thanks again.

-sixgunner

Hello, this is a great forum I recently found, and I have some questions for y'all....

First of all, I have a Randall RG-80 112sc combo w/ an 8ohm speaker and an additional 8 ohm speaker out.
Amp is rated:
80w @ 8 ohms
100w @ 4 ohms

Now, I'd like to run the combo into my 4x12 5150 cabinet.

The 4x12 has been rewired from 16 ohms to 4 ohms

The combo has two 8 ohm speaker jacks

Question:
Can I run my combo safely into the single 4 ohm load by simply first unplugging the combo's internal speaker?
If no, then how can I run this setup?


Next question......
Can anyone provide info about the channel cloning mod for these amps?
(turning the Green channel into an additional RED channel)
How to? Who offers it? etc.

Thanks for your help!
sixgunner