Peavey humbucker model - Manual (Page 21)

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Factory settings place pickups at the same volume level; however
many players change the height of one or more neck or bridge
pickups to create their own output levels. Should you choose to
alter the height of a pickup, remember that it is magnetic. To keep
your factory warranty intact, Peavey suggests you take your guitar
to an Authorized Peavey Service Center to have the pickup adjust-
ments made.
Pickup Adjustments