Height Adjustments — are made by turning the set screws
located on either side of the string on top of each bridge saddle
clockwise to raise the string height, or counter-clockwise to lower
the string height. Be sure that both screws are set at the same
height so that they contact the base plate equally. Generally, the
string action should follow the curve of the ngerboard. Factory
specs for string height are:
Quantum 4: 5/64" measured from the top of the 12th fret to the
bottom of the "E" string and 4/64" from the top of the 12th fret
to the bottom of the "G" string.
Quantum 5 & 6: 6/64" measured from the top of the 12th fret
to the bottom of the "B" string, 5/64" measured from the top of
the 12th fret to the bottom of the "E" string and 4/64" from the
top of the 12th fret to the bottom of the "G" string and "C" string
(Quantum 6).
Intonation Adjustment — is made by turning the Phillips head
screws at the back of the bridge. Use an electronic or strobe
tuner to match the pitch of the fretted and twelfth fret harmonic
for each string, using a fresh set of the brand and gauge strings
you will normally use on the instrument. If the fretted note is at
compared to the harmonic, turn the screw counter-clockwise until
the two notes match. If the fretted note is sharp compared to the
harmonic, turn the screw clockwise until the two pitches match.
Have the intonation set by a qualied repairperson if you are not
familiar with this procedure.
NECK RELIEF ADJUSTMENT
Neck relief on Modulus basses is set at the factory to accommodate
most playing techniques and string gauges. Though the Quantum™
composite neck on your Quantum Bass is able to resist many times
the tension of a standard set of strings, we have provided a relief
adjusting system to allow for personalized setup of your bass. The
Modulus system provides for two-way truss rod adjustment (over-
bow and under-bow). Turning the truss rod nut clockwise will move
the center of the ngerboard closer to the strings. Turning the truss
rod nut counter-clockwise will move the center of the ngerboard
farther away from the strings. Use the provided 5mm hex wrench to
make relief adjustments. The hex socket is visible under the nger-
board at the end of the neck is the access point for the adjuster.
There is a center "dead" spot you will feel when the system is at its
neutral point. We recommend having this adjustment made by a
qualied service tech.
Quantum Specs
QUANTUM NUT @24 FRET STRING SPACING @ BRIDGE SCALE LENGTH
Q4 1.60" 2.40" 0.75" (19 mm) Center to Center 35"
Q5 1.85" 2.75" 0.67" (17mm) Center to Center 35"
Q5-19 1.90" 3.00" 0.75" (19 mm) Center to Center 35"
Q5-21 2.00" 3.25" 0.85" (21.5 mm) Center to Center 35"
Q6 2.00" 3.25" 0.67" (17 mm) Center to Center 35"
String Gauges for Quantum 4, 5, & 6
»Quantum 4: 45-65-85-105
»Quantum 5: 45-65-85-105-130
»Quantum 6: 35-45-65-85-105-130
»Modulus Nickel Roundwound, Extra Long Scale – Available for purchase
CUSTOMER ASSISTANCE / FAQ
Answers to Frequently Asked Questions can be found on our
website, www.modulusgraphite.com. If you encounter an issue
or question that is not covered in the FAQ section, please contact
info@modulusgraphite.com. Following the adjustment and mainte-
nance procedures in this manual will help ensure peak performance
and long-term reliability for your instrument. We suggest you do
a monthly inspection of your bass to keep your instrument in top
working condition. Unless specically noted, all procedures in this
manual apply to Quantum 4, 5, & 6 string versions.
*As with any situation needing technical expertise or manual dexterity, be honest with yourself about
what you do and don’t feel comfortable attempting. If you feel the least bit hesitant about making an
adjustment, take the instrument to a qualied repair person in your area to have the work done.
Modulus Graphite Owner's Manual
www.modulusgraphite.com
Modulus Graphite Owner's Manual
www.modulusgraphite.com
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