Presence question

[Rafa]

For the ones who have built the LXh2 marshall simulator or now some about electronics
The presence control in my LXH2 is working as a gain control, is that wrong or maybe Im wong calling it presence?
Here is the schematic

Thanksssssssssssssssssss
Cheers
Rafa

[MartyMart]

Mine is the same, it adds some "air" but also quite a bit of gain !

MM.

[JHS]

This is a Marshall preamp sim and no Marshall preamp has a presence control.
The P-control on a Marshall is a treble control for of the poweramp, based on neg. feedback.

If you want a P-control for this preamp, use a P-control similar to the one you find in the Egnater/Mesa/Kitty Hawk/Engl preamps.( a small filter circuit connected the Mastervol). Mayby the cap-values must be slightly adapted to this preamp.

JHS

[MartyMart]

This is a Marshall preamp sim and no Marshall preamp has a presence control.
The P-control on a Marshall is a treble control for of the poweramp, based on neg. feedback.

JHS

NOW I understand that control !!  thanks JHS 

[Rafa]

Thanks a lot guys
I saw this photo at LXH2 site so I was convinced it was a presence control

Cheers
Rafa