Re: C8 v Hybrid in SG w/ ebony board
Why is that? I believe you but ive never heard that or really noticed it
When coils are matched, they cancel 60 cycle RF hum, which is why humuckers were invented. As a byproduct of that, they also have increased mids and a reduction in treble and clarity; the hotter a HB is wound, the more apparent that is. When coils are unbalanced, they're not getting all of the above characteristics. That means that the coils aren't fully cancelling hum, and there's less reduction of treble, so they have a sharper high-end. The unbalanced part has single coil characteristics, the balanced part is humbucker. It's a great sound for a neck HB, you actually get a sharp, biting sound from the neck slot.
I like to make neck hybrids by combining coils from a bridge and neck PAF (or similar low output, like a Jazz). A 4.2K and a 3.8 coil (about 10% difference) really opens up the high-end. Even though the total resistence is 8K, it's noticeably brighter than a stock 7.6K neck PAF. I'll pair up neck and bridge coils from the same model (ie. '59B and '59N), different models (SethB and JazzN), or even different brands ('59B and a Gibson 50SR). The key is getting a 5 to 10+% difference in resistence between the coils; the bigger the difference, the brighter it is. And because you have that sharp treble on top, you can use a warm magnet with a lot of texture and dynamics (A2 or UOA5). I don't know why this isn't much more common with stock neck HB's. This prevents overly-warm, muffled, muddy neck HB's.
You can also get unbalanced coils using spin-a-split, which is a very simple mod that requires no additional parts. I much prefer it over coil cut or parallel, as both are much weaker and thinner, not as useful. In spin-a-split, you still keep some of the HB muscle behind the sound, and add a sharp edge.
My EQ efforts involve warming bridges and brightening necks.