Postretro
Inspired
This is my favorite hack for reducing interference and note-to-note IM in a Bass Amp.
(Amp block; Speaker page)
1) Choose your favorite Impedance Curve -- any curve at all. (The Jazz 120 is nice for Jazz sounds.)
2) Set "High Freq" to 40000 -- the max.
3) Set "HF Reso" to 0.0 -- the min
This will completely flatten the the HF Resonant Peak -- even more than an SS amp.
If you feel like you are missing something in your HF sound, then add some HF lift back in by increasing "HF Reso,"
This will give the Impedance Curve a bit of a lift in the HF's.
Flat will give you a clearer sound with less wavering between multiple notes.
A lift will bring some of that wavering back.
But, it will also be closer to a SS amp which is flatter than a high impedance tube amp, but not completely flat.
4) Set "Xformer HF" by ear. I end up at around 16K for bass sounds. Whatever sounds good to you.
My thoughts are to decrease it until I feel like something is missing or wrong (100% subjective.)
5) Adjust "Cab Resonance" to taste; down = cleaner but less organic, up = more organic, more complex, less clear
While, the same thing can be done for the LF Resonant Peak, it is less satisfying.
The LFRP provides a lot of the bass amp's characteristics and qualities.
A flat LFRP is cleaner, some people will like it.
To me, it just sounds boring with less interesting characteristic tone.
(Amp block; Speaker page)
1) Choose your favorite Impedance Curve -- any curve at all. (The Jazz 120 is nice for Jazz sounds.)
2) Set "High Freq" to 40000 -- the max.
3) Set "HF Reso" to 0.0 -- the min
This will completely flatten the the HF Resonant Peak -- even more than an SS amp.
If you feel like you are missing something in your HF sound, then add some HF lift back in by increasing "HF Reso,"
This will give the Impedance Curve a bit of a lift in the HF's.
Flat will give you a clearer sound with less wavering between multiple notes.
A lift will bring some of that wavering back.
But, it will also be closer to a SS amp which is flatter than a high impedance tube amp, but not completely flat.
4) Set "Xformer HF" by ear. I end up at around 16K for bass sounds. Whatever sounds good to you.
My thoughts are to decrease it until I feel like something is missing or wrong (100% subjective.)
5) Adjust "Cab Resonance" to taste; down = cleaner but less organic, up = more organic, more complex, less clear
While, the same thing can be done for the LF Resonant Peak, it is less satisfying.
The LFRP provides a lot of the bass amp's characteristics and qualities.
A flat LFRP is cleaner, some people will like it.
To me, it just sounds boring with less interesting characteristic tone.