sonicmojo wrote:
All really nice! I've been looking for metal knobs like on the silver one. Where'd you find them????
I got them on eBay straight from China. IIRC, I believe the seller was Wonder_Buy, it's been almost 2 yrs. I turned Brian of CE on to them and he grabbed a batch.
Dumble style knob RN-113 fits CE chassis indicator design.
ER wrote:what didn't you like about the dual masters?
Thanks, Erik
Well these early circuits only had one master. Unless I'm incorrect when wire this circuit for two MV's as commonly seen, when the OD is switched on the resistance of the clean master pot is parallel with the fixed OD network and loads it. In addition if you had a bright cap on the clean master this would become part of the OD circuit as well.
I substituted in several values in place of the 1M as well as leaving or removing the 180K resistor to ground. I found that leaving the 180K and using a 560K resistor gave me a good balance between the channels without the interaction of not having the clean channel totally lifted from the OD circuit, however your mileage may vary.
The better way to do it would be to wire one half of a relay to totally isolate the clean master pot network from the OD circuit.
the Dual MVs in the "70s Hybrid" sport a Clean-Master where the ground is not connected in OD mode, thus the Clean MV is not (!) in parallel to the OD input.
In my 70s Hybrid with Dual MV I do not have any effect of the Clean Master on the OD input circuit.
There is a posting by Tom from a couple of days ago where he shows the Dual MV circuit for the 70s amps.
the Dual MVs in the "70s Hybrid" sport a Clean-Master where the ground is not connected in OD mode, thus the Clean MV is not (!) in parallel to the OD input.
In my 70s Hybrid with Dual MV I do not have any effect of the Clean Master on the OD input circuit.
There is a posting by Tom from a couple of days ago where he shows the Dual MV circuit for the 70s amps.
Cheers,
Electron
If that is Jason's hybrid layout, yes it is wired differently than mine orginally was. IIRC, there's a mistake on it too, the way that the ceramic cap on the bass pot is wired.
Revision 110410_750 looks correct to me. What was wrong with the wiring?
Did you try the MV wiring as per Jasons layout?
Cheers,
Electron
ToneMerc wrote:
ElectronAvalanche wrote:Hi ToneMerc,
the Dual MVs in the "70s Hybrid" sport a Clean-Master where the ground is not connected in OD mode, thus the Clean MV is not (!) in parallel to the OD input.
In my 70s Hybrid with Dual MV I do not have any effect of the Clean Master on the OD input circuit.
There is a posting by Tom from a couple of days ago where he shows the Dual MV circuit for the 70s amps.
Cheers,
Electron
If that is Jason's hybrid layout, yes it is wired differently than mine orginally was. IIRC, there's a mistake on it too, the way that the ceramic cap on the bass pot is wired.
Structo wrote:What is the middle effect between the Furman and TC unit?
Rockman MIDI Octopus, with external loop units you can bypass a signal(s) or use the 8 switched contacts on the back to channel switch. We used to call it a poorman's Bradshaw. Too bad Scholz won't reissue it again, it would sell like hot cakes even today.
The prices on these can be crazy, more than once I thought of making the remote loop boxes and offering them for sale. Eventually, I'm going to make an adapter interface box that I can plug on the amp footswitch jack so the amp channels can be switched via MIDI.
