Acoustic Matrix
Active Acoustic Guitar Pickup
Includes Installation Instructions for Models
Acoustic Matrix Natural I
Acoustic Matrix Natural II
Wide Format
.125” (3.2 mm) Width
Narrow Format
.094” (2.3 mm) Width
2.125” String Spacing
Pickup Dimensions
WIDE FORMAT
NARROW FORMAT
Width:
.125" (3.17mm)
Width:
.094" (2.39mm)
Height:
.053" (1.35mm)
Height:
.043" (1.09mm)
Length:
2.650" (67.3mm)
Length:
2.650" (67.3mm)
Sensing Area:
2.620" (66.55mm) Sensing Area:
2.620" (66.55mm)
Maximum recommended string spacing for both formats : 2.500" (63.5mm)
NOTE:
The overall length of the Acoustic Matrix™ pickup is 2.650" (67.3mm).
We recommend a saddle slot length of at least 2.875" (73mm).
The actual sensing area of the pickup is 2.620" (63.5mm) long and can accom-
modate string spacings of up to 2.500" (63.5 mm). Poor string balance may
result with string spacings greater than this.
DO NOT
trim the end of the pickup's
length as ground hum will be introduced. Custom pickup lengths are available
from Fishman.
Tools
• Plunge Router with 1/8" (3.15mm) cutter for Wide Format
OR
3/32" (2.4mm)
cutter for Narrow Format
• Caliper
• 400 Grit Sandpaper or Scraper
• Soldering Iron
(30 watt max)
• Rosin Core Solder
• Wire Strippers
• 1/2" Open End Wrench
• 3/32" (2mm) Allen Wrench
• 15/32" (11.9mm) Tapered Reamer or .....Variable Speed Drill
X-Acto
®
Saw
Center Punch
1/8" (3.15mm)Twist Drill
Parts List
15/32" (11.9mm)Spade Bit Drill
• Acoustic Matrix™ Pickup
• 1/4” endpin-mounted miniaturized preamp
• 3 adhesive-backed plastic wire guides
• Battery clip & screws
Important
1.
Both the pickup and preamp are integral components of the Acoustic Matrix™
system. Neither the pickup nor the preamp is meant to be used separately or in
conjunction with other pickups or endpin preamps. Degraded performance will
result from using the pickup or preamp with other systems.
2.
Particular attention must be paid to the flatness and squareness of both the sad-
dle and the saddle slot. Pickup performance and balance will be be greatly
enhanced by a properly fit pickup. If you are new to undersaddle pickup instal-
lation,
The Finer Points of Piezo Installation by Ken Parker is available at
www.fishman.com.
3.
Handle the pickup carefully! Mishandling may result in ground hum or intermit-
tent signal. Fishman Transducers will be in no way responsible for any damages
to the pickup that occur due to misuse or poor installation.
Mechanical Factors
Affecting Pickup Performance
Before you install the pickup, make sure the bridge and saddle are within our
recommended "safe zone" of usable parameters.
Break Angle
For the pickup to perform opti-
mally, there should be a 20° (mini-
mum) string break angle across
the back of the saddle. An ade-
quate break angle can often be realized by "ramping" the string slots. In
extreme cases, where the break angle is much less than 20° and the saddle is
so low that it is nearly flush to the top of the bridge, the instrument probably
requires a neck re-set. In these cases, resetting the neck to a higher angle will
restore the saddle height and the string break angle required for good pickup
performance.
50/50 Rule
We have found that there is a critical relationship between the overall saddle
height and the bridge slot depth. For adequate mechanical coupling and pickup
balance, we recommend that the saddle slot depth (with pickup installed)
measures no more than 50% of the total height of the saddle. If the slot
measures more than 50% of the total height of the saddle, balance and/or output
level of the pickup may suffer. In these cases, add a hardwood shim under the
pickup. To determine the shim's thickness, subtract 1/2 of the total saddle height
from the slot depth. Then remove an equal amount of material from the bottom
of the saddle.
Exception to the 50/50 rule:
Pickups in bridges (especially Martin
®
style,
3/32" width) with exceptionally steep string break angle will generally perform
very well, even if the saddle slot depth measures more than 50% of the total sad-
dle height.
Prepare the Saddle Slot
A large percentage of string balance problems
with undersaddle pickups can be traced to an
unevenly cut or warped saddle slot.
Irregularities on the bottom or sides of
the slot can often prevent the saddle
from uniformly pressurizing the pickup.
For this reason, we strongly recommend that
before you install any undersaddle pickup, re-mill
an existing slot with a plunge router, jigged up in an
appropriate slot cutting fixture.
1.
Rout a .125" (3.17 mm) wide saddle slot for the Wide Format pickup.
OR
Rout a .094" (2.38 mm) wide slot for the Narrow Format pickup.
2.
Be certain that the bottom of the slot is flat. Deepen an existing slot only
enough to obtain a clean, flat surface.
Locate the Wire Hole
1.
Locate the center of the wire hole no less than .100" (2.54 mm) from the clos-
est string.
2.
Mark the location where the wire will enter the saddle slot. Center the mark
between the walls (width) of the slot.
3.
Drill a .094" hole.
4.
Clear wood chips and foreign materials from the saddle slot.
5.
Carefully insert (do not bend) the pickup. The fit must be loose in the slot,
without binding on the sides or the ends of the pickup. If the ends of the pick-
up come in contact with the saddle slot, pickup failure could result.
Prepare the Saddle
We highly recommend the Fishman Cleartone™ saddle for enhancing the per-
formance of the Acoustic Matrix™. We also suggest synthetic materials such as
Micarta™ or Corian™ as adequate substitutes. Organic saddles such as bone or
ivory can not be recommended since these are not structurally as consistent as
synthetic materials and could produce poor string to string balance through the
pickup.
1.
Prepare a .125" or 3.17mm wide saddle (.094" or 2.38mm for Narrow
Format). For adequate pickup performance, the bottom and sides of the sad-
dle must be absolutely FLAT.
2.
Remove only enough material from the width of the saddle to provide a slid-
ing fit in the slot. To test the fit, the saddle should slide easily in the slot, but
should not fall out when overturned. To maintain your current action, the new
saddle must be .053" shorter in height (.043" for Narrow Format pickups)
than your current saddle.
Thank you for choosing the Fishman Acoustic
Matrix™. We are confident that you will find it to
be the finest acoustic guitar pickup available.
The active Acoustic Matrix™ system employs
state-of-the-art surface-mount technology in its
exclusive endpin-mounted, miniaturized preamp.
The versatility and ease of installation are
unparalleled. The pickup may be plugged into
any acoustic or electric guitar amplifier, sound
system, recording console or direct box with
excellent results.
The Pickup
The Acoustic Matrix™ under-saddle pickup is made with a unique co-polymer sensing
material available exclusively from Fishman. This material exhibits a sensitivity and
dynamic range that far surpasses all other known materials. The fully shielded Acoustic
Matrix™ transducer is a multi-layer arrangement of co-polymer strips that run the length
of the pickup. This design allows the pickup to sense the motion of an entire guitar
saddle’s length, providing superb string to string balance, as well as sensitivity to both
the strings and top of the instrument.
The Preamp
The Acoustic Matrix™ preamp is a fully-buffered, miniaturized circuit; housed in an
elongated shielding cap. The design features discrete transistors for low noise and
incredibly long battery life. The preamp's extremely low current consumption allows
years of use between battery changes. An onboard microphone or a second active
pickup may be wired (stereo) directly to the Acoustic Matrix™ preamp, thanks to our
integral Switchjack™ switching endpin jack (for use with the Fishman Blender
®
System).
Natural I
The Acoustic Matrix™ Natural I is the perfect choice for musicians who want accurate
reproduction of their guitar’s acoustic tone. The Natural I was designed for instruments
with well balanced, evenly voiced top to bottom response. It complements all small
bodied instruments such as concert/auditorium guitars. This pickup is frequently the
choice of finger-pickers and solo performers. When played at low to medium volumes,
the Acoustic Matrix™ Natural I also works well with most full-sized instruments.
Natural II
The Acoustic Matrix™ Natural II is designed for instruments that are amplified at high
volumes on stage, especially full-size guitars with big bottom. It is voiced to control
boominess and to provide extra brightness. The Natural II is recommended for
musicians in situations where the guitar needs to stand out and sound natural, without
feeding back.
Important !
Installation of the Acoustic Matrix™ requires
fine woodworking & soldering skills and should
be performed only by a qualified repairman.
Fishman Transducers will not be responsible
for any damages that may result from improper
installation.
Please read these instructions carefully.
For technical assistance, contact Fishman
Customer Support at 978-988-9665 or
INSTALLATION BY A QUALIFIED PROFESSIONAL REPAIRMAN IS STRONGLY
RECOMMENDED. FISHMAN TRANSDUCERS WILL NOT BE RESPONSIBLE FOR
ANY DAMAGES THAT MAY RESULT FROM IMPROPER INSTALLATION.
The FISHMAN ACOUSTIC MATRIX™ is warranted to function for a period of One (1)
Year from the date of purchase. If the unit fails to function properly within the warranty
period, free repair and the option of replacement or refund in the event that FISHMAN is
unable to make repair are FISHMAN’s only obligations. This warranty does not cover any
consequential damages or damage to the unit due to misuse, accident, or neglect.
FISHMAN retains the right to make such determination on the basis of factory inspec-
tion. Products returned to FISHMAN for repair or replacement must be shipped in accor-
dance with the Return Policy, as follows. This warranty remains valid only if repairs are
performed by FISHMAN. This warranty gives you specific legal rights and you may also
have other rights which may vary from state to state.
RETURN POLICY
To return products to FISHMAN TRANSDUCERS, you must follow these steps...
1.
Call FISHMAN TRANSDUCERS at 978-988-9199 for a Return Authorization Number
(“RAN”).
2.
Enclose a copy of the original Bill of Sale as evidence of the date of purchase, with
the product in its original packaging and a protective carton or mailer.
3.
FISHMAN TRANSDUCERS’ technicians will determine whether the item is covered
by warranty or if it instead has been damaged by improper customer installation or
other causes not related to defects in material or workmanship.
4.
Warranty repairs or replacements will be sent automatically free of charge.
5.
If FISHMAN TRANSDUCERS determines the item is not covered by warranty, we
will notify you of the repair or replacement cost and wait for your authorization to
proceed.
L
I M I T E D
W
A R R A N T Y
FISHMAN TRANSDUCERS, INC.
340-D Fordham Road Wilmington MA 01887 USA
Phone 978-988-9199 • Fax 978-988-0770
www.fishman.com
009-066-004 • Rev 5 • 2-9-04
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9 Volt Battery
Pickup
Preamp
NO MORE THAN 50%
RAMP
No less than .100" (2.54 mm)
I n s t a l l a t i o n G u i d e
I n s t a l l a t i o n G u i d e
TM
EQUIPPED!
