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A properly intoned guitar will sound in tune no matter where you play along the fretboard.
Intonation is determined by the length of each string as controlled by the location of each
string’s saddle. To check intonation, complete all adjustments to the truss rod and string
action, and tune your guitar. Then, compare the fretted sound of the 12th fret to the open
harmonic of the 12th fret. (Harmonics are created by lightly placing a nger against a
string—in this case, at the 12th fret—and striking normally with your picking hand. You’ve
done it correctly if you hear a clear, loud, bell-like tone.) If the notes are the same, no
adjustment is required. If they do not match, you will need to ne-tune each offending
string using the adjustment screws to move the saddle location. If the fretted 12th
note is at, adjust the saddle toward the neck. If sharp, move it away from the neck.
Note that on some guitars, you will need to loosen strings before making saddle
adjustments. Repeat the process until the fretted sound of the 12th fret matches the
open harmonic of the 12th fret.
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Every Peavey steel-string guitar features an adjustable truss rod inside the neck. Truss
rods allow for adjustments in the neck to accommodate changes in string tension
caused by humidity, changing string gauges or tuning. As the backbone of your
instrument, the truss rod should always be adjusted rst during instrument setup.
(Peavey recommends that you enlist the services of a qualied technician to make
the required truss rod and/or tremolo adjustments on your instrument. Improper
adjustment may damage your neck and void your Peavey warranty.) To gain access
to the truss rod, look for a mm or mm allen wrench adjustment screw either at
the end of the neck near the body or at the opposite end near the headstock. Note
that some guitars may require neck removal to gain access to the neck pocket truss
rod. The goal of truss rod adjustment is to create the correct amount of bow in your
guitar’s neck to facilitate optimal playability.
To check the neck’s bow, hold the guitar in normal playing position and follow
this procedure for both E strings (string 1 and string 6). Fret and hold the string at
the rst fret, while fretting and holding the same string with your picking- hand
Intonation
Neck and Truss Rod