I searched my documents and found instructions which I don't know what the source is, I copied it from somewhere on the internet, maybe even from somebody at LTG ???
All the text below is from that unknown (to me) source:
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Guild (later Westerly) set humbuckers with a gap of 1/16" (1.59mm) treble side and 3/32" (2.38mm) bass -- between the top of the pickups and the bottom of the strings,
fretted at the last fret.
I like mine a tad lower, but it's a general rule to get you in the ball park of your personal preference.
In my experience, just let your ears decide: set to the approximate height as per the specs and then try it out. treble side is always a bit higher.
Put your amp loud enough on a clean setting and using the pickup switch try neck and bridge separately to make sure they come out at the same volume both in strumming mode and individual string picking. Too low the guitar will sound flat and lack tone, too close to the strings weird things happen; buzzing, unpleasant overtones, and the guitar may sound out of tune due to pull of magnet on the string.
It's best to set both pickups with equal volume. You can always favor one over the other using the individual volume pots.
For the record mine are at the following distances from the strings and sounds just right (to my ear anyway):
Neck bass side - 3.5 mm, treble side - 2 mm
Bridge bass side - 2 mm, treble side - just a hair over 1 mm
(
with ruler sitting on top of pickup pole screw):
I am just going thru this in my IV. I am playing thru a Marshall Class 5 and when I first got the amp I was unable to use the EQ - base had to be set to zero. In search of new pickups I found a lot of information on this topic at Seymour Duncan's Forum. There are several 335 players there who recommended lowering the front pick up on semi-hollows even with , or lower than the front ring. I have no experience with pickups but it piqued my curiosity so I followed their suggestions and am surprised and very happy with the results.
Since mud is not my thing I used the front pickup as my test piece.
First I set all the pole pieces level with the front pickup. Then I lowered the front pickup as described and immediately I could use the EQ on the amp. Then I adjusted the poles until they followed the contour of the fret board. I
lowered the Low E pole (as suggested) a half turn below the pickup. This allowed me to use the base control on the amp. For some reason the Fender pickups seem to be sensitive to the B string on my guitar so I drove that pole down even with the top of the pickup. I would strum a
1st position G chord and listen for any strings sounding louder than the others.
I then set the height of the rear pickup to match the volume of the front pickup and followed a similar pattern for the poles. Some set this to be slightly louder so they can set the two guitar volumes the same, but have a little more presence on the bridge for lead work.
After playing this for several days I removed the strings and using a 6" rule and a line level I leveled the guitar until the neck was level and then leveled the pickups front to back and side to side (pickups level to strings). Then restrung and played some more tweaking the poles.
Finally, last night, I had the
amp at volume fairly low. I turned the
guitar volume to zero and then would pluck a string and
bring the guitar volume up until I could just hear the string thru the amp. Then I moved to the next string and repeated. I would adjust the pole pieces until each string could be heard
at the same volume setting on the guitar.
When it is said and done the poles look random and strange, but they are adjusted to each individual string voicing.
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EDIT: I found my source! One source is hideglue and other members at LTG! Sounds like I copied the above for myself sometime ago from various posts from here:
http://www.letstalkguild.com/ltg/showthread.php?165032-Pick-up-height-on-SF-IV
Ralf
