YG Acoustics RACK Series User manual

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Important Safety Instructions .......................................................... 3
A Message from Yoav Geva ............................................................ 4
Introduction ....................................................................................... 5
About the Manual and Limited Warranty ....................................................................... 6
Configuration .................................................................................... 7
Unpacking ......................................................................................... 8
Contents of the Cartons ................................................................................................ 8
A Note about Semi-Cosmetic Surfaces ....................................................................... 10
Assembly ........................................................................................ 11
Setup ............................................................................................... 22
Maintenance .................................................................................... 24
Spikes ......................................................................................................................... 24
Technical Specifications ................................................................ 25
Available configurations: ............................................................................................. 25
Shelf space: ................................................................................................................ 25
Uniform load limit: ....................................................................................................... 25
Outer dimensions: ....................................................................................................... 25
Net weight: .................................................................................................................. 25 
Troubleshooting ............................................................................. 26
Service Information ..................................................................................................... 26
Contact Details ............................................................................................................ 26

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Important Safety Instructions
 Please read all instructions in this Owner’s Manual carefully and completely before
you start assembling and/or using your YG Acoustics™ Rack.
 Always disconnect AC power before connecting or disconnecting any cables, or
when cleaning any component.
 Never use combustible or flammable chemicals for cleaning any component.
 Never allow any liquid or moisture to penetrate this product.
 Never attempt to repair this product yourself. If a problem occurs, contact your YG
Acoustics™ dealer. There are no user serviceable parts inside.
 Never expose this product to extremely high or low temperatures.
 Never operate this product in an explosive atmosphere.
 Always keep hazardous equipment out of the reach of children.

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A Message from Yoav Geva
Dear Music Lover,
Congratulations and thank you for your purchase of a YG Acoustics™ Rack.
You have acquired a product that is at the leading edge of the art of science and sound.
We are confident that it will bring musical joy into your home for many years to come.
I’d like to personally welcome you into our family, a very exclusive group of discerning
listeners who expect nothing but the natural sound of live music reproduced in the
comfort of their homes.
As part of this family, you enjoy a strong and knowledgeable support network. We here
at YG Acoustics™, and our dedicated partners worldwide, are at your service.
We wish you many wonderful musical and emotional experiences.
Truly Yours,
Yoav Geva, President
And the YG Acoustics™ Team

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Introduction
YG Acoustics™’ Rack series was initially designed as a tool for internal use. The
factory’s critical listening room needed a vibration-free, solid platform to allow equipment
to play under optimal conditions. In a challenging environment, full of hostile vibration,
other equipment racks couldn’t deliver the desired result.
When designing Rack 1.3, 1.4 and 1.6, YG Acoustics™ adhered to its core values:
straightforward, no-nonsense, precise science. The result is a rack series that isolates
equipment from vibration extremely well. This is partly thanks to the fact that each shelf
can be optimized in minutes for the weight of the specific component that it supports.
A video that demonstrates the effectiveness of Rack 1.3 can be found on the YG
Acoustics™ website.
YG Acoustics™ Rack 1.3, 1.4 and 1.6 – straightforward, no-nonsense, precise science...
handmade in U.S.A.

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About the Manual and Limited Warranty
To begin enjoying your new YG Acoustics™ Rack, first carefully read and follow the
instructions set forth in this Owner’s Manual. Maximal performance depends on following
all instructions described here, as well as those found in the Owner’s Manuals of all
other components in your audio system. Save these instructions for future reference.
YG Acoustics™ Rack is covered by a limited 5-year warranty, so save the bill of sale to
protect your purchase and aid in any service-related questions. The terms of such limited
warranty are set forth on the limited warranty card. In addition, be sure to send us the
copy of the limited warranty card, which is used as a product registration card. Only once
we receive the card and have you listed in the customer database, can we locate the
manufacturing protocol of your Rack and provide quality service. Failure to complete and
submit the copy of the limited warranty card to us could affect your rights.
IMPORTANT! It is imperative that you fill out both the limited warranty card and
the supplied copy, including the model. After doing so, mail us the copy for use as
a Product Registration Form, to this address (which also appears on the back of
the limited warranty card):
YG Acoustics LLC
4941 Allison St., Unit 10
Arvada, CO 80002
U.S.A.

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Configuration
As with YG Acoustics™’ world-famous speakers, Rack is available in several modular
configurations. The construction allows for the addition of shelves, and for horizontal
expansion, without the need to replace the existing Rack.
 Rack 1.3 – 3 shelves.
 Rack 1.4 – 4 shelves.
 Rack 1.6 – 6 shelves (3 high, 2 wide).
Other configurations available upon request.

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Unpacking
IMPORTANT! Do not attempt to lift YG Acoustics™ Rack alone – your dealer
should install Rack for you using specialized tooling, and your assistance should
be limited to actions that do not require the use of high force. Even so, to avoid
possible injury, use extreme care during unpacking. Always stand as straight as
possible and use your leg muscles to lift any item. Do not lift while bending from
the waist. To avoid possible injury, always seek the advice of a qualified medical
professional if you suffer from any relevant medical condition, or if otherwise
applicable.
Note: When storing Rack in its shipping cartons (either before initially unpacking,
or after repacking), always place the cartons right side up. The internal foam
package will not endure prolonged placement on any side except the intended
bottom.
Each YG Acoustics™ Rack is packed in one or more cartons with a shipping weight of
up to approximately 82 kg (180 lbs). To avoid personal injury and possible product
damage, we strongly urge you to allow your dealer to perform the whole unpacking
process using specialized tooling.
To unpack Rack, perform the following steps:
1. Place the carton right side up. Carefully open the carton – never slice any deeper
than 6 mm (1/4”) into the carton to avoid damaging the Rack parts inside.
2. Carefully lift the parts one by one from the carton, and place them on a soft surface
for assembly.
3. Your dealer will at this point assemble Rack together using specialized tooling.
Always assemble all parts together securely, and make sure they cannot rattle or
otherwise loosen over time.
After unpacking, carefully inspect Rack for possible damage due to shipping. If you
discover any damage, immediately contact your YG Acoustics™ dealer for assistance.
Keep all packaging for future shipping. In the unlikely event a product needs repair,
YG Acoustics™ will only accept units in their original shipping cartons. The use of any
other packaging may result in damage to the product that is not covered by the product’s
limited warranty.
Contents of the Cartons
Each carton contains several Rack parts, which vary by configuration (fully read this
manual before using any of the supplied tools).
Rack 1.3 is packaged in a single carton that contains the following parts:

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 1 bottom shelf with titanium-colored trapezoid
 2 middle/top shelves
 3 shelf inlays
 2 uprights
 3 YG Acoustics™ spikes (4 available upon request)
 3 black composite disks to prevent the spikes from damaging the flooring (4 available
upon request)
 2 hex keys – a small one for adjusting spikes, and a larger one for bolting shelves to
uprights.
 18 screws for bolting shelves to uprights
 A tube of blue Loctite, to prevent screws from loosening over time.
 18 isolators. The actual number needed may vary depending on the weight and
construction of your audio gear. More can be purchased separately if needed.
 6 stainless steel balls. The actual number needed may vary depending on the weight
and construction of your audio gear. More can be purchased separately if needed.
 A USB stick containing this Owner’s Manual, as well as 2 copies of a limited warranty
card: one titled “Limited Warranty” which you should fill and keep in case service is
required, and a “Copy of Limited Warranty” which should be filled and mailed to YG
Acoustics™ as a product registration card.
Rack 1.4 is packaged in two cartons that contain the following parts:
 1 bottom shelf with titanium-colored trapezoid
 3 middle/top shelves
 4 shelf inlays
 2 taller uprights
 3 YG Acoustics™ spikes (4 available upon request)
 3 black composite disks to prevent the spikes from damaging the flooring (4 available
upon request)
 2 hex keys – a smaller one for adjusting spikes, and a larger one for bolting shelves
to uprights.
 24 screws for bolting shelves to uprights.
 A tube of blue Loctite, to prevent screws from loosening over time.
 24 isolators. The actual number needed may vary depending on the weight and
construction of your audio gear. More can be purchased separately if needed.
 9 stainless steel balls. The actual number needed may vary depending on the weight
and construction of your audio gear. More can be purchased separately if needed.
 A USB stick containing this Owner’s Manual, as well as 2 copies of a limited warranty
card: one titled “Limited Warranty” which you should fill and keep in case service is
required, and a “Copy of Limited Warranty” which should be filled and mailed to YG
Acoustics™ as a product registration card.
Rack 1.6 is packaged in two cartons that contain the following parts:
 2 bottom shelves with titanium-colored trapezoids
 4 middle/top shelves
 6 shelf inlays
 2 uprights
 1 shared upright
 6 YG Acoustics™ spikes (8 available upon request)

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 6 black composite disks to prevent the spikes from damaging the flooring (8 available
upon request)
 2 hex keys – a small one for adjusting spikes, and a larger one for bolting shelves to
uprights.
 36 screws for bolting shelves to uprights.
 A tube of blue Loctite, to prevent screws from loosening over time.
 36 isolators. The actual number needed may vary depending on the weight and
construction of your audio gear. More can be purchased separately if needed.
 15 stainless steel balls. The actual number needed may vary depending on the
weight and construction of your audio gear. More can be purchased separately if
needed.
 A USB stick containing this Owner’s Manual, as well as 2 copies of a limited warranty
card: one titled “Limited Warranty” which you should fill and keep in case service is
required, and a “Copy of Limited Warranty” which should be filled and mailed to YG
Acoustics™ as a product registration card.
Contents may vary when Racks are purchased as a retroactive expansion, and/or when
customized Racks are purchased.
If any of the foregoing parts seem to be missing, immediately contact your YG
Acoustics™ dealer for assistance.
A Note about Semi-Cosmetic Surfaces
The undersides of Rack shelves and inlays, and the inner side of Rack uprights, are
semi-cosmetic surfaces (just like with bottoms of YG Acoustics™ speakers). This means
that a visual finish is applied to them as if they were cosmetic surfaces, but minor
cosmetic blemishes may appear due to the utilized machining and anodizing processes.
With semi-cosmetic surfaces, such blemishes are unavoidable and thus allowed.

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Assembly
1. The entire assembly process is a job for two professionals - enlist the help of a
second technician for performing the tasks below safely and carefully. Prepare a soft,
clean surface for assembly, to prevent damaging parts. Place one of the uprights on
the surface, curved face down and screw holes facing upward.

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2. Attach the top shelf to the upright’s topmost row of holes using 3 screws. Snug-
tighten the screws, but do not fully tighten yet.

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3. Attach the middle shelf/shelves to the desired row(s) of holes using 3 screws each.
Snug-tighten the screws, but do not fully tighten yet. Make sure the trapezoidal tabs
on all shelves (marked with yellow arrows in the second photo below) face the same
direction. Space the shelves as evenly as your audio gear would allow.

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4. Attach the bottom shelf, which has wider spaced holes, to the bottom-most row of
holes using 3 screws. Snug-tighten the screws, but do not fully tighten yet. Make
sure that the titanium-colored trapezoid faces the same direction as the above-
mentioned trapezoidal tabs.

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5. Attach the next upright (curved with screws facing downward for Rack 1.3, or shared
for Rack 1.6 as shown) using 3 screws per shelf. First snug-tighten, and then fully
tighten all 6 screws per shelf. The recommended tightening torque is 11.5 Nm1. If
you do not have a suitable torque-controlled tool on hand, use a small drop of the
supplied blue Loctite on each screw’s thread and tighten securely, but be careful not
to overtighten.
1 The joint is rather soft, so a slow-acting tool is required to achieve proper torque. Do not use a
pulse-tool.

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6. Carefully rotate Rack so that the titanium-colored trapezoid faces upward, and the
rear of all shelves is on the soft work surface.

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7. For Rack 1.3 or Rack 1.4, skip the next two stages and continue to stage 9 below.
For Rack 1.6, attach the remaining 3 shelves from top to bottom, using 3 snug-tight
screws per shelf. Monitor the direction of the trapezoidal tabs and titanium-colored
trapezoid to make sure they continue to match.

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8. Attach the remaining upright using 3 screws per shelf, and fully tighten all 6 screws
of the last 3 shelves. Use the same torque/Loctite process as described above.

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9. Tilt the Rack upright, move into position, and only then install spikes with or without
floor-protector disks if desired. The photo below, which shows spikes installed before
tilting upright, is provided for illustration purposes only to help locate spike-holes.

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10. Using the precise Setup calculation-sheet below, tune each shelf using the
appropriate number of isolators or stainless steel balls. If more than the included
isolators or stainless steel balls are required, they may be purchased separately.
Shown below are three of the many possible setups – 3 stainless steel balls, 3
isolators and 6 isolators.