Axe=Edit alphabetizes them. Ignore the numbers, use the names. You want "Plexi".Different on an FM9?
Axe=Edit alphabetizes them. Ignore the numbers, use the names. You want "Plexi".Different on an FM9?
Very cool! I've always wanted to experiment with that.Dumble tone stack which is plate driven instead of cathode follower driven.
Yes.Very cool! I've always wanted to experiment with that.
So the cathode follower stage will still be in the model affecting distortion etc. but the tone stack is fed with higher impedance?
There is no "best" or "most accurate". Marshall amps in those days were wildly inconsistent. There are conflicting reports of the tone stacks. Our reference amp has log pots. George Metropolous says most of the amps he's seen had log pots. Some people claim linear pots were more prevalent.Is it best to use the 100W High with the Plexi tone stack for the most accurate “‘68” style Plexi/Super Lead or is the 1970 with the modded presence cap a better option?
I don’t mean “better” as in better/worse.
Appreciate that - I didn’t mean best in that sense.There is no "best" or "most accurate". Marshall amps in those days were wildly inconsistent. There are conflicting reports of the tone stacks. Our reference amp has log pots. George Metropolous says most of the amps he's seen had log pots. Some people claim linear pots were more prevalent.
In the end it doesn't matter. Set the tone controls to where it sounds best to you. You can achieve the same sounds regardless of the tapers. You just have to put the controls in different spots. Don't obsess about it. Make music.
The 1970 model doesn't have a "modded presence cap", whatever that means. It has less negative feedback.
You lost me. I don't know what you're trying to achieve. Putting what up to where?Appreciate that - I didn’t mean best in that sense.
Re the “modded presence cap”, I meant changing the presence value @James Freeman was referring to earlier in the thread.
Less negative feedback means more perceived gain, is that right? So putting that up to where the ‘69 has it would bring it in line with that? The 1970 seems gainier and squishier, which I’m guessing is the negative feedback.
It has an extra gain stage and a 1uF bypass cap on the last triode.@FractalAudio what mods to the stock "Brit 800" are baked into the "Brit 800 Mod" amp model? It sounds killer.
@FractalAudio thisYep, that worked perfectly.
Anyone who wants to try a Super Lead with a 0.68u presence cap, set "Presence Frequency" to 0.147 on the 1970 100W model.
Waiting patiently for separate channels, otherwise it's a really nice 1959 Super Lead.
5k+0.1u = 318Hz (Presence Frequency: default 1)
View attachment 130732
5k+0.68u = 47Hz (Presence Frequency: 0.147)
Almost a full bandpass, very noticeable with Pre-PI Master Volume mod like Jose.
View attachment 130733
That's for a MKII. A '68 SLP does not have those values.
Ahhh gotcha. Thanks.That's for a MKII. A '68 SLP does not have those values.
There's the poster for the wallDon't obsess about it. Make music.
Love this amp model. I do all my Aerosmith side project’s rhythm tracks with it.FWIW, our reference 100W Plexi is sort of in between 1968 and 1969. It has an 820 ohm cathode resistor on V1B. Coupling cap is 2.2n. Feedback is 47K off the speaker jack (!!!). The model assumes a full stack w/ (2) 16-ohm cabs so that would equivalent to 8-ohm tap.
Yes, 100W Plexi is my favorite. You can do all the Jose mods etc. and it’s a beast!Love this amp model. I do all my Aerosmith side project’s rhythm tracks with it.
Its a mix of pre/post Mastervolume, Sat switch, negative feedback, input gain etc.
I posted a preset in another thread but I will post a preset here tomorrow.Do you know how you'd alter those settings for the mod? I've really wondered that.