Modulus GRAPHITE QUANTUM User manual

OWNER'S MANUAL
QUANTUMQUANTUM

WELCOME TO MODULUS®
And thank you for choosing one of our instruments. This owner’s
manual is intended to be a resource to help you understand and
fully utilize the features and functions of your new instrument.
Located in the heart of the thriving San Francisco Bay Area music
scene, Modulus Graphite began building exceptional handmade
instruments in 1978. Our specialty is utilizing innovative materials to
better serve the needs of the serious player. Modulus pioneered the
use of graphite in the construction of guitar and bass necks. We were
also the rst to combine structural graphite with non-structural tone
woods in our Genesis guitars and basses.
Innovation is meaningless if it doesn’t result in increased playability,
sonic integrity and visual beauty. Modulus is dedicated to building
instruments that showcase all of these features. Let’s take a look at
the many facets of your new instrument and how they work togeth-
er with your ears, hands, and heart. Music is the reason we are here.
QUANTUM TBX™, QUANTUM™, FUNK UNLIMITED™, & VJ4™ NECKS
Modulus instruments feature a composite neck design. Our original
Quantum bass neck is a lightweight, ultra-rigid "D"-shaped shell
made from dozens of layers of aerospace grade epoxy-impregnated
graphite bers. With an amazing strength-to-weight ratio and a
resonant peak far above the range of the notes on a bass, it is an
ideal neck for producing crystal clear, even tone. Because graphite
telegraphs attack more quickly than conventional wood necks, the
Quantum neck aids articulation and is dynamically very sensitive.
FINGERBOARD
Modulus basses come standard with a phenolic (composite) nger-
board. An optional wood ngerboard is available. This provides the
player a choice of feel, look, and sound. Composite ngerboards
are more dense, and harder than a wood ngerboard. Composite
ngerboards oer similar performance to ebony and have a very low
coecient of thermal expansion. That means they expand / contract
far less than wood. This is part of the reason a Modulus neck is so
stable. The composite ngerboard on a Modulus neck delivers clean
and clear tone on fretted basses, and a tighter focus to the sound of
fretless instruments. The optional Chechen ngerboard is an ecolog-
ically sustainable, independently-certied Mexican hardwood with
similar characteristics to rosewood. A wood ngerboard on a Modu-
lus neck adds a touch of warmth to the midrange of the instrument
and provides a more traditional look and feel to the neck.
WOOD
Modulus instruments are crafted from the nest aerospace-grade
composites and hand-selected exotic woods. Wood, whether for
the body of a TBX, Quantum, Funk Unlimited, or VJ4, is chosen for
its tonal characteristics, beauty and long-term stability. Our skilled
builders combine woods to create instruments with individual sonic
and visual character that maintain the signature Modulus sound:
Crisp and clear with warmth and dynamic sensitivity.
GENERAL MAINTENANCE
CLEANING AND STORING YOUR MODULUS INSTRUMENT
Keep a soft, clean cotton cloth in your case. Wipe down the body,
hardware and the back of the neck after each playing session. Use
a separate cloth to wipe down the strings and ngerboard. This will
remove body acids and oils that corrode metal parts and will main-
tain the playability and beauty of the instrument.
All surfaces of your instrument, excluding hardware, pickguards (if
applicable) and ngerboards, are nished with a polyurethane n-
ish. This nish is extremely tough, but can be scratched or chipped
by hard objects such as tools, jewelry or keys. Always store your
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instrument in its case or gig bag when not in use and keep it on a
guitar stand between sets on the gig. In most instances, wiping the
nish with a soft cloth after each use will be enough to keep the
nish looking new. If you desire greater protection, use an automo-
tive paste wax, such as Turtle Wax twice yearly. Never use abrasive
polishing or rubbing compounds or solvent-based cleaners on your
bass. If the body or back of the neck becomes extremely dirty, apply
lukewarm soapy water with a soft, damp cloth to the area. Wipe
clean, then dry immediately.
Do not apply any kind of oil to the composite ngerboard. It will not
sink in and may damage the material. Chechen ngerboards may
benet from an application of gunstock oil or similar light oil, gener-
ally during winter months when humidity is low. Test the Chechen
ngerboard by dropping one drop of water onto the board to see
how long it takes to soak in. If the drop of water takes less than 10-
20 seconds to disappear, the board needs a light coat of oil. Use a
clean cloth slightly moistened with the oil. Gently and evenly rub it
into the wood ngerboard. Allow the oil to soak in for a minute, and
then wipe o the excess. Avoid getting oil on the strings.
Although the graphite neck is impervious to most temperature and
moisture conditions you will encounter, wood and electronics are
still vulnerable. We recommend that the instrument be kept at room
temperature whenever possible.
PICKUPS AND ELECTRONICS
Modulus Quantum instruments come standard with EMG soapbar
pickups run through an EMG preamp. A variety of pickup / preamp
congurations are available. Please visit ModulusGraphite.com for
more information. There you will nd details on additional pickup /
preamp options, along with videos that demonstrate several con-
gurations.
PICKUP HEIGHT ADJUSTMENT
Pickup height is set at the factory for even string balance and out-
put. Depending on your playing style and string choice, you may
want to change the factory settings.
Height is set by turning the adjusting screws clockwise to lower the
pickup, counter-clockwise to raise the pickup. Standard height at the
factory is 1/8" from the top of the pickup cover to the bottom edge
of the string (depressed at the 24th fret). Ensure the angle of the
pickup is parallel to the strings.
CONTROL FUNCTIONS AND LAYOUT
Modulus Quantum Basses typically have a 3 or 4 knob control lay-
out as detailed below.
»Dual Pickup, 4 Knob Conguration: Volume / Blend / Bass / Treble
»Dual Pickup, 4 Knob Conguration with Stack: Volume / Blend / Mid / StackedTreble
& Bass
For additional information on the preamp options, please visit our
website: www.modulusgraphite.com
CHANGING THE BATTERY
To replace the battery in a Modulus Quantum, be sure the instru-
ment cable is unplugged from the bass. Lay the bass face down on a
clean soft surface. Use a medium Phillips screw driver to remove the
screws from the control cavity cover plate. Remove the cover plate.
Lift the battery carefully out of its compartment and gently pull o
the snap-on battery clip. Do not pull on the wires to remove the
clip. Replace the battery, place the fresh battery back in the com-
partment and install the plastic cavity cover with the Phillips head
screws. Take care to dispose of the dead battery properly, and in an
environmentally friendly fashion.
*Do not leave your bass plugged in for extended amounts of
time when not in use as this will drain the battery. Never plug
in or unplug your bass when it is plugged into an amplier. The
loud "pop" as the battery discharges can damage your speakers.
BRIDGE ADJUSTMENTS
The bridge on your Quantum Bass is adjustable for string height
and intonation.
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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 qualied 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
qualied 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
[e-mail]. 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 specically 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 qualied repair person in your area to have the work done.
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©2020 Modulus Graphite, LLC
ModulusGraphite.com [e-mail]
12930 63rd Ave. Noh
Maple Grove, MN 55369 Model QUANTUM
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