HRS MXR User manual

HARMONIC RESOLUTION SYSTEMS
MXR AUDIO STAND
The Foundation of Great System Performance

Introduction
Thank you for purchasing the Harmonic Resolution Systems MXR Audio Stand.
When used properly, it will give you many years of superior musical or video
signal reproduction.
The MXR Audio Stand significantly reduces the negative impact of structure-
borne noise on your audio or video component performance. Decades of
engineering experience, custom material development, and listening tests are
incorporated into the design of the MXR Audio Stand. This reference level
product from Harmonic Resolution Systems, Inc. will enable your audio/video
source and amplification components to achieve peak performance.
The MXR Audio Stand, which includes the HRS Isolation Base as the primary
shelf system, is a perfect match for the HRS Damping Plates and Nimbus
Products. While the MXR Audio Stand and Isolation Bases work to significantly
reduce structure-borne noise, the HRS Damping Plates and Nimbus Products
significantly reduce the harmful effects of air-borne noise and structural
resonance on your components.
Please read this manual completely prior to assembly and use of your MXR Audio
Stand. It contains instructions necessary for proper assembly, use, and care of
this system. Proper care of your MXR Audio Stand will ensure optimum
performance and an aesthetically appealing.

Safety Instructions
IMPORTANT WARNINGS!
Do not place any tall objects on the top shelf of the MXR Audio Stand. A tall
object is any object with a height that is greater than the length of the isolation
base. A tall object is also any object that has a height greater than its own width
or length. Tall objects must not be placed on top of the MXR Audio Stand for any
reason. The object may become unstable and tip over causing damage to the
component, adjacent objects, or injury to people.
Never lift or move the MXR Audio Stand with the shelves (M3 Isolation Bases)
installed. You should always move the MXR Audio Stand frame to its final
location prior to loading shelves and components. Moving the MXR Audio Stand
frame with the isolation bases installed (with or without equipment) can
permanently damage the systems adjustable feet or cause the shelves to fall out of
the rack resulting in potential damage or injury. Always take the time to remove
all of the equipment and shelves to relocate the MXR Audio Stand.
Do not lift the M3 Isolation Base (shelf) by the inner plate or the external feet
attached to the bottom of the rectangular frame. Always lift or move the isolation
base with the inner plate facing up and the external support feet facing down
(same orientation as when used to support your component). Always follow
these handling instructions to prevent personal injury or damage to the unit.

Set-Up Instructions
The MXR Audio Stand consists of a frame structure and the isolation bases that
support each component. The standard three and four shelf frame structures
come in three boxes. Each box will be marked with the model number starting
with MXR. There are two longer boxes that contain the left and right vertical
panels. The third box contains the panel brace system, the isolation base support
brackets, the adjustable rack feet, screws, and wrenches required to complete the
assembly process. The only tools not provided for assembly are:
1. Adjustable wrench - to lock the feet after leveling the frame
2. Philips Head Screwdriver - for unpacking crates (electric drive
recommended)
3. Level - 24" minimum length or equivalent
Work Surface - Prior to unpacking any material, locate a very strong and very
stable work surface (capable of supporting 250 lb. load) or area on the floor that
will give you a very soft scratch resistant work area that is at least three feet by
six feet in size. The more space you have the better, as it will give you room to
move around the frame to complete assembly. It is important that the area be free
of all dirt, screws or small pebbles, and that it is covered with a clean soft
protective blanket (min size 24" x 45") that will prevent damage to the relatively
soft external skin of the vertical panels.
Unpacking Assembly Hardware - Remove all the contents from the smaller
cardboard box containing the hardware required to assemble the frame. Place
them on a table adjacent to your selected work surface and remove all the
wrapping material. Be careful not to drop or allow the anodized aluminum parts
to contact each other as they may scratch the surface. Do not stack the parts on
top of each other once they are removed from the protective packaging material.
Unpacking Vertical Panels - Unpack the vertical panel by removing the top
surface of the crate (see Photo 1). This surface will be marked for clarity and you
will need a Philips head screwdriver (manual or electric) to remove the cover.
Photo 1 Photo 2

Lift the panel out of the crate by lifting vertically at each end (see Photo 2). Move
the panel and packing material directly to your damage free work surface. Once
at the work surface, remove and save the two fitted foam end support cushions.
Then open the protective paper covering the panel to expose the unit for
assembly. Saving all the packing material is critical to secure transportation of
the frame in the future. Shipping or moving the panel by any other means may
expose the unit to permanent damage.
Installation of Adjustable Foot System - Unwrap two of the four feet supplied
with the unit. Remove the screw and washer from each of the feet (see Photo 3).
Photo 3
Hands tighten the nut all the way down on each individual foot. Then back the
nut off one half rotation (see Photo 4).
Photo 4
Place the supplied washer on top of the nut and then screw each of the feet into
the threaded inserts on the bottom of the first vertical panel (see Photo 5 & 6).
The feet should be threaded into the insert until the washer/nut come in contact
with the vertical panel threaded insert. (This ensures maximum engagement
between the insert and the foot). Repeat this procedure and install the second foot
to the bottom of the first vertical panel.
Photo 5 Photo 6

Panel Brace Installation - You are now ready to attach the primary brace system
to the panel. There are two braces that hold the two end panels together to form
the primary MXR Frame Structure. There are two rectangular spacers attached
to each brace system when it is shipped that need to be loosened to complete
assembly. Simply take the T-wrench or Allen wrench supplied with the MXR and
loosen (counter clockwise) each of the eight nuts on the brace assembly (see
Photo 7). You do not want to have lots of play in the assembly, you just want to
break the torque on each nut so that the brace can be properly located.
Photo 7
The HRS logo is machined into the center of each brace. Locate the HRS logo on
the brace and orient it so that when the stand is upright on its feet, the logo will
be in correct orientation. There are two steps at each end of the brace sub
assembly that fit precisely over the attachment block on the panel. Slowly lower
the brace assembly onto the block until the steps in the brace contact the block
(see Photo 8 and Photo 9). Attach at least one of the 1/4-20 x 3/4" screws to the
brace assembly (see Photo 10) prior to removing your hand from the assembly to
insure it stays in place. It is very important that the 3/4" long screws are used at
this location to obtain proper thread engagement.
Photo 8 Photo 9

Install all eight 1/4-20 x 3/4" screws to the brace (see Photo 10) until they are
fully engaged but do not torque the screws at this time. You will want to leave
them just loose enough so that there is a very small amount of play to complete
balance of assembly. All the screws for the brace system will be fully tightened at
a later point in the assembly process. If they are tightened at this time, you may
not be able to complete assembly or it will not be level when complete. You will
need to use the Allen wrench (or ratchet wrench) at the location closest to the
frame because the T-wrench will hit the frame preventing screw rotation.
Photo 10
Repeat the panel brace installation procedure for the second brace at the top of
the panel (see Photo 11). Orient the HRS logo so that when the stand is sitting on
its feet the HRS logo will be right side up and in proper orientation. Make sure
that all eight screws are completely installed on each of the two panel blocks (16
screws total) prior to moving to the next assembly process.
Photo 11

Second Panel Assembly - Remove the second panel from the wooden crate and
place it in a separate area to remove all the packing material (see Photo 12 &
13). As noted before, the area and surface used should not pose any threat to the
integrity of the panel surface finish. Please follow the same procedure as noted
for un-wrapping the first panel.
Note: If assembling an MXR frame that consist of more than two panels then
install center panel (isolation base brackets on both sides) at this time as the
second panel
Photo 12 Photo 13
Remove all the foam and packing paper from the second panel. It is important
that two people perform the next step. With one person on each end of the panel,
very carefully and slowly place the attachment block of the second panel into the
top of the brace assembly until it contacts the step on the brace (see Photo 15).
Immediately install at least one 1/4-20 x 3/4" screw into each end on the panel
block and fully engage, but do not tighten the screws (see Photo 16).
Photo 14 Photo 15

Install all sixteen screws, eight at each panel block on the second panel, 1/4-20 x
3/4" screws to the brace (see photo 16) until they are fully engaged, but do not
torque the screws at this time. You will want to leave them just loose enough so
that there is a very small amount of play to complete balance of assembly. All the
screws for the brace system will be fully tightened at a later point in the assembly
process. If they are tightened at this time, you may not be able to complete
assembly or it will not be level when complete. You will need to use the Allen
wrench at the location closest to the frame because the T-wrench will hit the
frame preventing screw rotation.
Photo 16
Squaring the MXR Frame - It is now time to torque all of the screws in the two
brace assemblies. We recommend using a long level to complete this process.
Place the long level across the top or bottom of the frame assembly (see Photo 17
& 18) and very slowly make minor adjustments in the second panel until it is level
and square with the first panel.
Photo 17 Photo 18

When the proper location has been achieved, torque all 32 of the 1/4-20 x 3/4"
screws at the panel block locations (see Photo 20) and the 16 1/4-20 x 1" screws
in the center of the two brace sub assemblies (see Photo 19). All of the screws
should be very securely tightened by hand. With the wrenches provided you
should apply maximum hand tightening force without straining yourself. Do not
use any extension or large wrenches that could over torque and strip the threads.
Photo 19 Photo 20
Installation of Remaining Adjustable Foot System - Unwrap the other two feet
supplied with the unit. Remove the screw and washer from each of the feet (see
Photo 21). Once the washer is removed, hand tighten the nut all the way down on
each individual foot. Then back the nut off one-half of a rotation on each foot
(see Photo 22).
Photo 21 Photo 22
Place the supplied washer on top of the nut and then screw each of the feet into
the threaded inserts on the bottom of the second panel (see Photo 23 & 24). The
feet should be threaded into the insert until the washer/nut come in contact with
the vertical panel threaded insert (insures maximum engagement between the
insert and the foot). Repeat this procedure and install the second foot to the
bottom of the second vertical panel.

Photo 23 Photo 24
Once all the feet are installed, you can now stand the frame up on the four feet.
You will want to have two or more people carefully lift the frame and clear any
objects so you do not damage the panel finish.
Isolation Base Bracket Installation - Each of the isolation bases has four feet on
the bottom that supports the shelf. Each of these feet sits in the pocket of a
bracket screwed to the MXR panel. There are two brackets on the first panel and
two brackets on the second panel (four total) for each isolation base. The MXR is
designed so that one isolation base sits at the very top location (see Photo 26) and
one isolation base sits at the very bottom of the frame (see Photo 25). When the
brackets are in these locations, the isolation bases will automatically be located
just above the top brace and bottom brace. The other brackets can be located as
needed depending on location for component size. Make sure that all four
brackets for each isolation base are in the same location (plane) on the frame.
There are four 1/4-20 x 5/8" screws used to attach each bracket to the aluminum
panel in the frame (see Photo 26). Locate each bracket on the frame and install
the four screws. You should fully engage each screw prior to applying final
torque. The T-wrench (see Photo 26) should be used to install the screws. You
will find that the handle length clears the end of the bracket for easy installation.
Photo 25 Bottom Bracket Orientation Photo 26 Top Bracket Orientation

Be very careful not to cross-thread the fastener. The fastener should thread in
very easily. If it does not, back it out and start it in again. If necessary, loosen
the other three nuts on the bracket and move the bracket position until all the
screws thread in with minimal torque. Once all four screws on each bracket are
engaged, hand-tighten the screws using the T-wrench. The top of the T-wrench
handle will twist about 10 degrees (1/36th of a rotation) without screw rotation to
obtain correct torque. Do not over torque the screws because you will strip the
threaded holes in the aluminum panel. The brackets can be assembled with the
panels horizontal or with the stand upright on the floor. Repeat this process until
all the brackets for the isolation bases are installed and the screws properly
tightened.
Note: If your MXR has more than two panels, stand the MXR frame up after the
first two panels are complete. Attach the feet on each of the remaining panels and
install them one at a time as shown above until all the panels are in place. Check
the panel orientation by alignment of the letters (a, b etc) that are marked on the
frame to indicating proper orientation of matched wood veneer panels. Square
each additional panel to the first two by using a level across the top. The feet can
then be used to level and stabilize the stand after complete assembly.
Final Assembly of MXR Audio Stand -You are now ready to stabilize and level
the frame. Move the frame to its exact final location for use in your system. Once
the frame is in the final location, check to see if the frame is level and stable. If
not, you can accomplish this by rotating the feet counter-clockwise (note: if
looking down at the feet from the top of the frame the rotational direction appears
to be a clockwise rotation). If there is instability, find out which foot is causing
the instability by rocking the frame with a level across the top. When the frame is
level, adjust only the feet required to make it completely stable and level. Never
back the foot system out more than six rotations from full engagement (.25") for
any reason. There should always be four complete rotations of engagement
remaining on the foot system. If you have lost track of where you are, start over
by fully engaging the foot per the original instructions and work your way back
out. If the floor the frame is sitting on is so uneven that this adjustment range is
not acceptable, then you must place a metal shim under the feet to keep the foot
engagement specified.
Once all the feet are in a location so the frame is stable and level, then tighten the
nut on the feet so that it interferes with the frame insert (see Photo 27). This is
accomplished with clockwise rotation (counter-clockwise rotation if viewing foot
from top of MXR) on the nut only while holding the foot. Once the nut is
tightened, the foot will be very stable and will not change position.

Photo 27
Isolation Base Installation into MXR Frame - Uncrate each of the isolation
bases if not already complete. Make sure you read and follow all of the
instructions in the isolation base manual prior to installing into the MXR Audio
Stand frame. You will want to verify that the frame size matches the isolation
base size. The MXR-1921 uses the 1921 isolation bases. The MXR-1719 uses the
1719 isolation bases.
Match the load range of each isolation base with the component weight.
Matching the isolation base to the proper component weight will insure optimum
performance. The load range can be changed for a nominal factory fee so if you
do not have the correct load range for a component, please contact Harmonic
Resolution Systems or your local certified retail location to arrange to have this
corrected.
Load the Isolation Bases into the brackets (see Photo 28), with the HRS logo
facing the front of the rack system. Be sure that the isolation base (shelf) foot is
located securely in the pocket of the isolation base bracket. This will
automatically occur when the front and back edge of the isolation base is in line
with the front and back face of the two vertical panels. If the front and back edges
do not line up with the front and back of the rack structure then, contact
Harmonic Resolution Systems or your certified retail location because you do not
have the proper size isolation base or frame. Measure the height of each
component and see if the selves are in the proper location. If needed, you can
move the isolation base (shelf) up or down by removing the shelf and adjusting
the location of the four brackets for that isolation base. Always follow the
instructions above for bracket installation when moving brackets. Be very careful
not to cross-thread the fasteners. The fastener should thread in very easily. If it
does not, back it out and start it in again (repeat as necessary). If necessary,
back out the other three nuts and move the bracket until they all thread in with
minimal torque. Apply proper torque once they are all fully threaded into the
rack frame.

Photo 28 Completed MXR Audio Stands. Singlewide shown on left, and double
wide shown on the right.
Loading Components into MXR Frame - Carefully load each component into the
MXR Audio Stand. Be careful not to hit the front edge of the isolation base
because you will scratch the aluminum frame. Once all the components are
loaded, you should check to see that none of the isolation bases are overloaded.
By placing one or two fingers on the bottom of the bracket and your thumb on the
top of the isolation base, you should be able to move the top of the isolation base
slightly (at all four corners) when you squeeze your finger(s) together. If there is
no compliance, remove the isolation base and component to verify the load range
of the isolation base is correctly matched with the component. The load range of
the isolation base is identified as part of the part number on the tag attached to
the bottom (see the isolation base manual for instructions). Please consult with
your authorized Harmonic Resolution Systems dealer or contact Harmonic
Resolution Systems if you need assistance. The isolation base load range can be
easily modified at any time by sending it to Harmonic Resolution Systems or an
authorized dealer to have the primary isolation stage rebuilt.
MXR Cable Organizer Accessory – The cable organizer system is available for
the MXR as an accessory. It bolts into the back of the MXR frame using the
remaining threaded holes in the MXR panel that are used to support the isolation
bases. They should be install using the 1/4-20 x 1/2"bolts supplied with the
organizers. The organizers are installed at a right angle to the panel with the
holes vertically aligned to pass the cables through in an aligned and organized
manner. Be very careful not to cross-thread the fastener. The fastener should
thread in very easily. If it does not, back it out and start it in again. If necessary,
loosen the other fasteners on the cable organizer and move it to a position that
allows all the screws to thread in with minimal torque. Once all four screws on
each organizer are engaged, hand-tighten the screws using the ratchet wrench
supplied with the MXR frame. The cable organizer can also be used to support
the weight of a network box for cables that apply this approach.

Solid Brace System for Oversized Isolation Bases (Accessory) – The MXR Audio
stand can also be set up to accommodate a larger isolation base at the top of the
frame. This is often done for large turntable systems but the brace system can be
used to support and large audio component. The billet machined brace system is
installed directly onto the existing MXR brackets. With the HRS logo in proper
orientation carefully lower the brace system on top of the brackets. The bearing
tape in the machined pockets of the solid brace system will come in contact with
the top of the bracket. There is a precise fit of the width of the brace system to the
frame. Be very careful not to scratch the frame during installation of the solid
brace system. If necessary loosen the top brace that connects the panels in the
MXR frame prior to installation of the solid brace inserts and re tighten after
assembly. Once the solid brace inserts are in place you can load the oversized
isolation base into the top channels of the solid brace system.

Care and Maintenance
The MXR Audio Stand is a very low maintenance item that will provide many
years of trouble-free performance by applying these basic care instructions.
Clean the external surfaces of the MXR Audio Stand frame using a professional
quality ultra soft lint-free micro-fiber cloth available in high quality automotive
stores. Use a lightly water damped cloth if you need to clean dirt from the frame.
Do not use commercial furniture polishes on the MXR. If polishing is necessary
to prevent damage from harsh sun or other elements, then use only HRS certified
furniture polish on the MXR frame. For premium painted MXR frames use only
HRS approved wax or detail solution.
Please follow the care instructions in the isolation base manual to clean and care
for the shelves (isolation bases) of the MXR Audio Stand. Read and follow the
instructions received with the isolation base to ensure optimum performance and
cosmetic appeal.
Do not spray, soak, or submerge the rack frame or isolation bases in water or
cleaning solutions. The rack system and isolation bases are made from many
different parts and materials. Submerging, spraying, or soaking the rack system
or isolation base will cause permanent damage to the assembly.
Clean the metallic parts of the isolation base and MXR Audio Stand using a lint-
free soft (non-abrasive) cloth. Use a damp cloth with a mild soap or Pledge
Surface Cleaner if required. Do not use abrasive cleaners or solvents to clean the
MXR frame or isolation base, as they will damage the quality of finish. Solvents
and solvent-based cleaners will attack and damage some of the materials used in
the MXR frame and isolation base and should never be used.
Do not wash the interior flex element of the isolation base feet even if you see a
coating or white substance on the surface of the flex element. This coating is
intentional and is put in the flex element to protect the isolation material from the
environment
Warnings!
Do not place objects with sharp or pointed feet directly on the isolation base.
Do not immerse in water or spray with water or any other liquids.
Do not use abrasive cleaners or abrasive sponges.
Do not wash with any solvent based cleaning solutions.
Do not wash the interior flex element of the isolation feet even if you see a coating
or white substance on the surface of the flex element.
Be very careful not to cross thread the fasteners when moving the shelf brackets

Limited Warranty
Harmonic Resolution Systems warrants the product designated herein to be free
of manufacturing defects in material and workmanship subject to the conditions
herein set forth, for a period of 90 days from the date of purchase by the original
purchaser. If the purchaser registers the unit with Harmonic Resolution Systems
by mailing in the warranty card, together with a copy of the bill of sale, within 14
days of the date of purchase, said purchaser would be registered for an extended
service contract. The extended service contract extends the 90 days to a period of
5 years from the date of purchase by the original purchaser or no later than 6
years from the date of shipment to the authorized Harmonic Resolution Systems
dealer, whichever comes first. This warranty is subject to the following
conditions and limitations.
1. This warranty is subject to the following conditions and limitations. The
warranty is void and inapplicable if the product has been used or handled other
than in accordance with the instructions in the owner’s manual, abused or
misused, damaged by accident or neglect or in being transported, or the defect is
due to the product being repaired or tampered with or modified by anyone other
than Harmonic Resolution Systems. The product must be packed and returned to
Harmonic Resolution Systems by the customer at his or her sole expense. A
written description of the defect and a photocopy of the original purchase receipt
must accompany a returned product. This receipt must clearly list model and
serial number, the date of purchase, the name and address of the purchaser and
authorized dealer and the purchase price. Harmonic Resolution Systems reserves
the right to modify the design of any product without obligation to purchasers of
previously manufactured products and to change the prices or specifications of
any product without notice or obligation to any person.
2. Warranty does not cover normal recommended care and maintenance.
3. Harmonic Resolution Systems shall not be responsible in any way for
consequential or indirect damages or liabilities resulting from the use of the
product covered herein or resulting from any breach of this warranty or any
implied warranty relating to said product.
4. Harmonic Resolution Systems shall not be responsible in any way for damage to
finishes resulting from normal use and exposure to sunlight and the environment
even within the normal and extended warranty period.

During the warranty period, Harmonic Resolution Systems will repair or replace
any defective components free of charge. A Return Authorization Number (RA
Number) obtained directly from Harmonic Resolution Systems is required before
any product is returned to Harmonic Resolution Systems for any reason. This
number must be visible on the exterior of the shipping container(s) for Harmonic
Resolution Systems to accept the return.
Units shipped to Harmonic Resolution Systems without a visible RA Number on
the exterior of the shipping container(s) are subject to be returned to the sender,
freight collect.
Units to be repaired by Harmonic Resolution Systems must be sent shipping and
insurance prepaid by the original purchaser in the original packaging material.
A returned product should be accompanied by a written description of the defect.
Repaired units will be returned by Harmonic Resolution Systems shipping and
insurance prepaid by the customer.
All other warranties or conditions either written or implied are void.

(MADE IN USA)
All Harmonic Resolution Systems Inc. products are 100% Made In The
United States of America by skilled craftsmen using only the finest
materials and our personal dedication to the highest workmanship
standards.
HARMONIC RESOLUTION SYSTEMS INC.
2495 Main Street, Suite 227
Buffalo, NY 14214
Telephone: [phone]
Web: www.avisolation.com
E-mail: [email protected]