I dropped a reply on previous topic
http://bareknucklepickups.co.uk/forum/index.php?topic=14370.0.
One thing to check first before a guitar is condemed, is to invest in a multimeter, and check the actual value of the potentiometers. Pots sold as 500K, in reality, are rarely close to the nominal value due to manufacturing tolerances
+/- 20%, in some cases. Too higher value, the guitar will sound bright and thin, too lower value and the guitar will sound dull and lifeless. Once your pots values are correct, say for Humbuckers, (500K ohms) and using the correct capacitor (0.022uF) you should get a decent tone from the instrument. If you think the guitar is still too bright, you can always roll off some more highs by increasing the size of the cap to say, 0.033uF or even 0.047uF. (However, I personally have never had to change the cap from the norm 0.022uF).
With reference to (_Tom ) post, I have a Charvel 475 (Basswood Body, Rosewood Neck) to which I installed first a VHII. For some reason the pickup seemed to "fight" the guitar. I couldn't quite put my finger on it but it didn't sound right. However, the guitar now has a Nailbomb fitted, everything is now in order, and it also compliments the two Irish Tours also fitted.
However, the VHII in the right guitar would sound the dogs doodles. Van Halen's original guitar I believe had Basswood body and Maple neck, which probably is what makes all the difference.
I found this article on why PRS neck pickups on their 22 Fret guitars sound dull in comparison to PRS 24 fret guitars.
http://www.edroman.com/guitars/prs/prsvsprs.htmThe Custom 22 pickup is situated in a location where the 24th fret harmonic falls. There is a node or phase cancellation at that location. This simply means that a lot of the midrange frequencies are gonna go bye bye because they are cancelled out. You will get a muddy sound just like a Les Paul on a 22 fret model whereas the 24 fret version pickup falls off axis or away from the node. You will get a more clear lively rhythm sound. The 22 fret sounds good for lead but at what sacrifice. The 24 sounds good for lead also but on the 24 you don't have to sacrifice your midrange frequencies.
Cheers
SJ