Im due to fit an alnico black hawk in one of my guitars within the next week. I was gonna try and record a direct comparison with EMG 81's and show the results, id be happy to do a review if any one was interested.
We are always happy to read other reviews around here. There are many BKPs and they work so differently with different guitars and gear, plus everyone hears things differently. Also you may say something about a PU I have thought too but could not put my finger on...etc, etc.
Just write one up mate!
I see Dimarzio solve this by using a cap between the middle and right leg of the volume pot. Is this kind of like doing the same?
That is what should be done when you wanne stick to modern wiring. It is called a treble bleed mod. The cap bypasses the volume pot and allows some high end to go through when the pot is rolled down.
Thing is getting the values right is quite a challenge, youŽll have to do a lot of trying for that. There are different values of caps, different types of caps, you can put resistors parralel or in series with the cap, play with values for the resistors....
It just is really, really hard to get it right cause there are so many possibilitys.
That is why I like the 50s wiring. Simple to do and effective and much easier to get right. You have only the type or the cap and the value. Which does have only a small effect on the treble passing I believe and is just responsible for the amount of possible rolloff and sound of the toneknob.
I would first try the 50s wiring with different values of caps with an aligator clip and cheap caps. It is just the easiert and cheapest way to get started on this.
Get the range from about 47nf to 1nf (so 47nf, 33nf, 22nf, 15nf, 10nf, 2,2nf, 1nf for example, might even throw a 100nf / 0.1uf in there). The lower the values the smaller the effect. I personally like smaller values cause I never do the extreme rolloffs and the lower values give me a larger sweetspot. Some of the most common values are 47, 33 and 22. You are likely to find one of these in your axe.
When you got the right value upgrade the quality of the cap to something like a Jensen cap (BKPs caps) or a Orange Drop.
If you are then not happy you at least got the tone pot right can go into trying all the possibilitys for the treble bleed.