JMW 9 Tonearm
VPI JMW-9 Scout
Tonearm Manual
THIS MANUAL IS GOOD FOR COMPLETE ARMS OR ARMTUBES ONLY
Setup and Instruction Manual
VPI Industries, Inc., 77 Cliffwood Ave. #5D, Cliffwood, NJ 07721
http://www.vpiindustries.com
BEFORE YOU BEGIN

Be very careful when handling the tone arm. The internal arm wire is exposed at the
headshell and at the rear of the arm. The wire is very delicate and physical damage to
the wire is not covered by the warranty after the arm is removed from its box.

When you remove the black tube covering the unipivot male bearing assembly be very
careful it is sharp, do not touch it, you will get punctured or cut.

There are a number of setscrews on the JMW Scout Arm, the Allen wrenches that come
with your arm will only fit the setscrews that you will need to adjust. All other screws
are factory set and should not be adjusted, except by our trained technicians.
Resetting any of the factory settings is not covered by the warranty.
A. CARTRIDGE MOUNTING:
FOR CARTRIDGES WITH THREADED MOUNTING HOLES:

Use the screws supplied by the cartridge manufacturer to mount the cartridge. Any
other screws may not fit the thread properly and may even damage the threads and
cartridge. USE ONE OF THE SUPPLIED WASHERS UNDER THE SCREW HEAD.

For all cartridges with pass through mounting holes use the hardware supplied with the
arm. Remember to use the washers under the screw heads to prevent damage to the
finish on the JMW Scout Arm. In this step, the connectors will be attached to the
cartridge's terminals. Disregard the color of the insulators on the cartridge clips go by
the color of the wires.
THE COLOR CODE OF THE WIRE IS:
RED = right hot
GREEN = right ground
BLACK OR WHITE = left hot
BLUE = left ground
IF YOUR PHONO SECTION INVERTS PHASE, THE HOT COLOR BECOMES THE
GROUND COLOR

Using tweezers or fine tipped pliers, grip the center of the red wire's connector (do not
grip the wire) and push it onto the cartridge's right hot terminal pin. In the same way,
connect each of the remaining connectors to its respective cartridge terminal. Do not
push the connectors all the way on, as this could damage the cartridge. Always back
up the cartridge with your finger when pushing on the clips.

The Scout tonearm comes with one dropped counterweight installed on the rear shaft
of the tonearm. For most cartridges you will only need this large weight. The
counterweight is held in position by a setscrew. If the stock counterweight does not
work with your cartridge please contact your local dealer/distributor or VPI directly to
swap your counterweight or purchase of an additional weight.

Pick up the arm tube, taking care not to strain or damage the fine 4-color wire and
Lemo connector.
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
For now, position the large counterweight as close to the bearing housing as you can
(toward the front of the arm) but not touching the balance ring. The object here is to
balance the arm while keeping the counterweight as close to the bearing housing as
possible. This results in the least inertia for a given cartridge weight.

In some rare cases it may be necessary to use two counterweights together or a larger
counterweight. Contact your dealer if a second or larger counterweight is needed.
B. OVERHANG ADJUSTMENT:

This adjustment will yield the lowest distortion in the last third of the record, the
hardest to track, when playing a typical 12" record. Do not go crazy over this
adjustment. You do not know if the stylus is aligned properly on the cantilever. You
are also facing a constantly moving target when playing a record. The arm is moving
in 3-dimensions and will only approximate the accuracy you have built into your
alignment.

Place the arm tube assembly on the lower bearing, taking care not to strain or damage
the 4-color wire and Lemo connector. Place the arm in its rest.

At the rear of the arm base assembly is the connector block. Plug the Lemo connector
into its receptacle on top of the block. Notice that the connector can plug in only one
way. Align the red dots on the arms plug with the red dot on the receptacle. Push
gently, do not force the plug.

Place the Alignment Jig into position by sliding the narrow end with the circular cutout
between the arms lateral balance weight and the platform that supports the armrest.
Make sure that the jig's cutout fits against and around the bearing well and the hole is
over the spindle.

Move the counterweight so there is a slight amount of tracking force, just enough to
keep the stylus on the alignment jig. Slightly tighten the set screw so it doesn’t slip
but can still be moved.

While the arm is in its rest, loosen the screws that hold the cartridge just enough that
the cartridge can be moved back and forth.
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
Carefully swing the arm over the grid at the far end of the jig and place the stylus as
close to the dot in the center of the grid as possible. Using a lighted magnifier glasses
will make this job very easy.

BE VERY CAREFUL NOT TO DAMAGE THE CARTRIDGE'S STYLUS:

Move the cartridge so that the stylus rests on the dot. Now, viewing the cartridge from
above, line it up so that its sides are symmetrically positioned between the lines of the
grid. If the cartridge has parallel sides, these should be made parallel to the grid lines.
Also make sure that the cartridge is centered between sets of lines. If you can see the
cantilever clearly you can align the cantilever to the alignment grid. This is difficult
and may produce no increase in sound quality.

Double check the adjustments made above. The cartridge needs to be both centered
and "square" between the gird lines and have the stylus resting on the dot.

Place the arm back in its rest.

Without letting the cartridge move, tighten the screws holding the cartridge to the arm
head. Make it tight, but don't over do it and strip the threads or distort the cartridge
body.
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FIG #2: THE PROPER WAY TO ALIGN A CARTRIDGE, ALIGN THE CARTRIDGE, NOT THE
TONEARM HEADSHELL! SHOWN IN WHITE FOR CLARITY.
C. TRACKING FORCE AND AZIMUTH

Make sure the turntable is level. Refer to your turntable instructions and use a bubble
level to check level. In most cases, the best place to put the level is on the platter.
With a unipivot arm it is particularly important to level the turntable.

First, the lateral balance or azimuth must be set. Because the phono cartridge is
offset, there is an unbalancing force that tilts the arm to one side. For the cartridge to
properly track the record groove, the stylus must be ninety degrees to the record
surface. Place a record on the platter and move the counterweight so a slight tracking
force is applied and the stylus just sits on the record surface.

Use the counterweight or azimuth ring to set correct azimuth. Lay the long thin rod
supplied behind the cartridge mounting screws into the V groove and use it as a guide
for setting azimuth. Rotate the flat part of the ring towards the side that is lower and
that side will become lighter causing it to rise. Playing with this will give very accurate
azimuth settings. You can also rotate the counterweight around its axis to do the
same thing.

Unlike other unipivot arms, the JMW’s lateral balance weight does not hang off to the
side of the arm. Instead, its position around the bottom of the upper bearing housing
places the weight below the pivot point. This increases mass below the pivot and
increases arm stability.
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
The JMW Scout does not have a built-in tracking force gauge but a Stylus Force Gauge
is supplied with your arm on a new unit. Place the stylus on the lower flat section of
the digital gauge and using the counterweight set the tracking force to the cartridge
manufacturer recommendation plus 1/10 of a gram more. We always recommend
going to the high side when it comes to tracking force. High frequency vibrations can
cause a light-tracking cartridge to cause more damage to the grooves than running a
cartridge at a heavy setting.

The JMW Scout arm has vanishingly low friction and will move very easily, be careful.
VERY IMPORTANT: MAKE SURE THE TONEARM IS PARALLEL TO THE PLATTER WHEN
SETTING THE TRACKING FORCE. IF IT IS NOT THE END RESULT WILL BE HIGHER OR
LOWER VTF THAN YOU WANTED.

Recheck the azimuth and the VTF at least twice to make sure they are correct. A little
extra time here will result in better sound. Make sure you do not go light on tracking
force that is a really bad idea!!!
D. ANTI-SKATING:

Anti-skating is one of the least understood forces acting on a tonearm. Skating force is
created by friction between the stylus and the record, causing a force vector in a
direction towards the center of the record when the headshell of the tonearm has an
offset angle. Putting a stylus down on a flat, groove less record will cause the arm to
move toward the center of the record. Arm manufacturers have tried to compensate
for this force, but that is impossible because the force is constantly changing as the
music and velocity change.

VPI has conducted careful listening tests and determined that every tonearm we tried
sounded better with its mechanical anti-skating disabled and the tracking force very
slightly increased.
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VPI has a unique solution to anti-skating: the coiled wire of the JMW Memorial Tonearm
acts as a spring and pushes the arm back without affecting the sound quality.
For those who love to play with test records you now have the option of using a
mechanical anti-skate.
IF YOU TRY ADJUSTING THE ANTI-SKATE WITH A GROOVE LESS RECORD, YOU
WILL RUIN THE TWIST IN THE TONEARM WIRE AND VOID YOUR WARRANTY. DO
THIS WITH THE MECHANICAL ANTI-SKATE IF YOU MUST NOT USING JUST THE
WIRE.
IF ADDITIONAL ANTI-SKATE IS NEEDED FOR WORKING WITH TEST RECORDS YOU CAN
GO TO THE MECHANICAL ANTI-SKATE SUPPLIED. THE THREE RUBBER RINGS SET THE
ANTI-SKATE FORCE, THE CLOSER THEY ARE TO THE END OF THE ROD THE MORE ANTISKATE FORCE YOU ARE APPLYING.
E. ARM HEIGHT:

Place a record on the turntable. Loosen the two setscrews in the base of the arm
(right side and rear of base). Lower the arm onto the record and make the arm tube
parallel to the record surface by rotating the wheel with the 4 prongs sticking out.

This is a good initial setting. You may wish to vary it depending on the cartridge you
are using and or the particular record being played.

Remember to always retighten those two setscrews when listening.
loose the sound will be unfocused.
If they are left
F. CABLES

Use shielded cables for lowest hum and noise.
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VPI Industries, Inc. Limited Warranty
VPI Industries, Inc. (VPI) warrants this unit against defects in materials and/or
workmanship for three (3) years from the date of purchase by the original retail
purchaser. VPI’s sole obligation under this warranty is limited to the repair or replacement,
at VPI’s option, of any part(s) found to be defective. VPI’s obligation to repair or replace
defective parts is the purchaser’s sole and exclusive remedy, and VPI shall not be liable for
any direct or indirect injury and/or property damage arising out of the use of the product
or defect in or failure of the product.
This warranty does not extend to any unit whose serial number has been defaced or
altered. Any product that VPI determines causes a defect or malfunction due to incorrect
installation, modification, misuse, or servicing by the purchaser, or service technician not
authorized by VPI to perform such service will not be warranted. This warranty does not
cover trivial or cosmetic defects that do not impair the unit’s normal function.
VPI reserves the right to make changes in this product without assuming any obligation to
install such change in any product previously manufactured. This warranty to repair or
replace defective parts is in lieu of all other express or implied warranties of
merchantability or fitness for a particular purpose. There are not warranties that extend
beyond the description herein.
Some states do not allow exclusion of implied warranties or limitation of incidental or
consequential damages, so the above exclusion or limitations may not apply to you. This
warranty gives you specific legal rights, and you may also have other rights that vary from
state to state.
Register your Product Online:
http://vpiindustries.com/warranty/
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