Some Discussion on Amp EQs

Thanks so much I will look strait into that then, as Sowter are great on quality transformers but I think £152 is a lot for a few small coils of wire.

 

What about a Peavey VB2's eq? How do the resonance and presence controls work? Some kind of hpf/lpf that affect the treble and bass?

 

Well bit late as we already have invested in the Lundahl transformers as they have a reputation like god.

 

The TSC is a great visualization tool, but actual measurements are a bit more useful when they're available.

I modified the second channel of my F2B to do mid boost in such a way that you could sum both channels and have controllable mid boost and cut. The guy I sold it to preferred just using the second channel though.

There are some graphs in my DIY tube preamp thread showing various mid boosts achieved with no inductors, starting here. Personally, I like some aspects of the interactivity of the Fender stack, so I tried to do my own riff on that with active bass and mids, and a quasi-passive treble circuit. And being the contrarian that I am, I made the whole thing optimized for active basses only.

 

Very true!

I don't suppose you have an F-1X on hand to see the actual results of those settings...? (I'm not set up for such things, or I'd do it myself.)

 

This is all I could find. Controls are bass, middle, four way mid toggle switch, treble. And of course presence and resonance.

http://assets.peavey.com/literature/manuals/03595970_4.pdf

 

Nope. There was one around here for a while which I worked on and played through, but it's long gone, as is the F2B.

 

NFB?

Never understood how the pres/res controls worked.

It functions alot like an ampeg tone set up but the mid selector just sounds/reacts pretty different.

 

Ah ok gotcha. Thank you sir

 

Is the 60's Sunn EQ just your basic FMV?

 

Ah right, just without an actual mid control for the 200S/2000S.

 

That be interesting to see. Never gonna say no to free knowledge.