MK Ultra.... ROTFLMAO!!!![]()
What a trip
MK Ultra.... ROTFLMAO!!!![]()
It's an absolutely horrible name ... unless you're a fan of brainwashing, psychological torture and drug abuse/manipulation.I laughed, it's a great name!
It's an absolutely horrible name ... unless you're a fan of brainwashing, psychological torture and drug abuse/manipulation.
Does it come with its own megadose of Owsley-25 ?
It uses 2 x 12AX7s. That makes me think that it has a cathodyne phase inverter, which Orange was using even in their big amps back in the day.
those big amps used only 2 x 12AX7s. This amp is cathode biased.
The Origin 20 is interesting in that the JTM Marshall used 3 preamp tubes and a cathode follower on the tone stack.My Marshall Origin 20H is cathode biased and has a long tailed pair PI. It has 3 12AX7s, but one is exclusively for the effects loop.
So if that Orange amp doesn't have an effects loop, and there isn't a cathode follower prior to the tone stack, I'm guessing the preamp might potentially be similar to what the Origin 20H has (tone stack is plate loaded after V1B). Or maybe it's BF/SF-like, but with more Brit-like values in the tone stack, and potentially a larger fixed midrange resistor (possibly 12K to 15K or so).
The Origin 20 is interesting in that the JTM Marshall used 3 preamp tubes and a cathode follower on the tone stack.
The Origin repurposes one for the effects loop, but it retains a cathode follower stage - on mine clicked in or out on the footswitch it appears to be in the preamp chain.
It uses 2 x 12AX7s. That makes me think that it has a cathodyne phase inverter, which Orange was using even in their big amps back in the day.
those big amps used only 2 x 12AX7s. This amp is cathode biased.
Someone who offers a mod for the Origin (to convert it into a 2204-alike, although not sure why anyone would want to do that to this particular amp) has a roughly-drawn schematic of it in stock form, and it shows the tone stack following V1B's plate, and then the effects loop send (V2A) falls after it. The send is driven off of V2A's cathode.The Origin 20 is interesting in that the JTM Marshall used 3 preamp tubes and a cathode follower on the tone stack.
The Origin repurposes one for the effects loop, but it retains a cathode follower stage - on mine clicked in or out on the footswitch it appears to be in the preamp chain.
The amp has that 'feel' like a JTM or most Marshalls of touch sensitivity that seems to come from a cathode follower - Vox too.
I think it's interesting to consider when they each came from considering Tom Jennings of Vox copied a Bassman initially and so did Jim MarshallI don’t know how this thread got to some Marshall amp.??? Orange has never had a tendency to follow in Marshall’s footsteps.
I have no idea where Orange put the bass other than it follows the volume with the treble prior to the volume. Those two tone controls could sit in between the first two gain stage, or the bass could follow the second gain.
Until someone opens one up and analyzes the circuit, we will not know what is there, but IF I were a betting man I would put my m9ney on this circuit having some resemblance to the old MK amps.
I was more thinking of the Origin 20 specifically, for the following reasons:I don’t know how this thread got to some Marshall amp.??? Orange has never had a tendency to follow in Marshall’s footsteps.
I thoughts tubes were unavailabl-um