Re: Why does the middle position on my Les Paul sound so honky?
To precise what I've said: the acoustic "mid notch in a bump" typical of LP's is rather around 400hz, finally. It won't be really seen below because it appears mostly when strings are played altogether.
The charts that I'll share below, conversely, just stack single notes played all along the fretboard in strictly identical conditions.
1-Here are the frequencies produced by two P.A.F. style HB's in parallel, in a LP (in red) vs in a SG (in blue):
Now, here is the same LP in red vs another LP with two FILTERTRONS in parallel (in blue):
Filtertrons are rather different pickups compared to P.A.F. replicas. Conversely, the pickups in the SG are pretty close technically to those in the LP...
But the two LP's with vastly different pickups have much more comparable responses in mid position / with 2 PU's in parallel than the SG and the LP with their similar pickups... and these responses with a comb filtering in the high mids but not much high freq are what we perceive as honkiness in LP's. I still attribute this to the parms evoked in my first post.
FWIW: a slice of my archives dropped there as general information grossly on topic, as usual.
EDIT - The specificity of vintage LP honkiness is that it sounds almost like OOP although the pickups are actually in phase. Line6 made this character really obvious when miodeling the mid position of a LP in the Variax 500.