Amina MobiusiB User manual

®
THE INVISIBLE SPEAKER CO.
V0 draft 6 June 2019
Compatibility
This installation guide covers installation of the Amina MobiusiB Invisible loudspeakers into cavity
walls and ceilings.
Other installation guides are available to download at www.aminasound.com for walls built with
different construction methods.
Always choose the installation guide that matches the speaker and wall type for your installation.
Amina MobiusiB, Plaster Over Invisible
Loudspeakers
Installation Guide
Audio for very smart homes®

The Amina MobiusiB series of Loudspeakers
is designed to deliver best in class audio
performance in fully concealed in-wall
and in-ceiling applications, preserving the
interior aesthetic of any space.
Featuring an integrated Backbox housing,
Amina MobiusiB products are designed
for quick installation into cavity walls and
ceilings of any construction type.
Wall Construction
This installation guide describes fully
the installation of the Amina MobiusiB
loudspeaker into cavity stud walls or
ceilings constructed of plasterboard panels.
This method must not be used to install
MobiusiB speakers into other wall types.
Refer to www.aminasound.com to
download installation guides for installation
of the MobiusiB speaker into other wall
types.
What’s in the box
The following items are included with each
Amina MobiusiB loudspeaker -
1 x Amina MobiusiB loudspeaker
2 x Mounting strips
8 x Countersunk head, stainless steel
fixing screws.
1 x Quick reference installation guide
with installation template
2 x Lever splice connectors*
*Other connectors may also be included,
allowing the installer to choose a preferred
connection method.
Amina MobiusiB Fully Concealed Loudspeakers

Caution: Read before installing this
product ..........................................................................1
Environmental............................................................3
Sound in your home ...............................................4
Sound in your work or leisure
environment ...............................................................4
Message from the Managing Director ..........5
About the Manufacturer .......................................5
Introduction ................................................................6
Installation options.............................................6
Unpacking ...................................................................6
Packaging....................................................................6
Compatibility .............................................................6
Overview......................................................................7
Setup tips.....................................................................8
Installation.................................................................10
Speaker protectors ..........................................10
Cutting the opening for the speaker....... 12
Locating joist work ....................................... 13
Check the width between the joists..... 13
Check width between the joists ............. 14
Fix the template to the wall ..................... 15
Cut around the template ........................... 15
Remove the cut section.............................. 16
Fitting the speaker ........................................... 17
Fitting the mounting strips ....................... 17
Feed the cable ................................................ 18
Splice options.................................................. 19
Prepare the wires........................................... 19
Connecting the positive wires ................ 19
Secure the positive wires .......................... 19
Connecting the negative wires .............. 19
Fit the speaker into the wall ...................20
Fix the speaker in place ............................. 21
Check the screw fixings ............................. 21
Testing ........................................................................ 22
Testing the speaker......................................... 22
Resistance test............................................... 22
Connect the APU protection device.... 22
Sweep test ....................................................... 22
Music test.......................................................... 22
Problems during test...................................... 23
Insecure drywall............................................ 23
Metal studs....................................................... 23
Cable buzzing ................................................ 23
Lighting fixtures ............................................ 23
Finishing .................................................................... 24
Preparing the speaker for plastering..... 24
Filling the perimeter.................................... 24
Taping the joints and panel surface.... 24
Plastering.............................................................. 25
Full plaster skim coat.................................. 25
Cutaway view .................................................... 26
Decorating................................................................ 27
Drying................................................................. 27
Re-test ................................................................ 27
Decorating........................................................ 28
Non-permeable coatings ......................... 28
Final Test ................................................................... 29
Checking the completed installation.. 29
Maintenance and cleaning...............................30
Re-decoration .........................................................30
Accessories................................................................ 31
Subwoofers .......................................................... 31
Troubleshooting..................................................... 32
Advice for testing............................................. 32
No or low sound output................................. 32
Distortion, buzzing or rattles at
modest volumes................................................ 33
Very low output after speaker passes
electrical tests ................................................... 33
Distortion at higher volume levels .......... 33
Specifications.........................................................34
Mobius series - Plaster over products ...34
Fire resisting installation................................... 35
Warranty information......................................... 35
Copyright information ....................................... 35
Contact information............................................36
Contents

1
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Caution: Read before installing this product
WARNING:
No attempt should be made to install
this product within existing building
structures unless you are certain that no
electric cables, water pipes, gas pipes or
supporting joists will be cut through.
FIRE PROTECTION:
When making an intrusion into an
internal wall or ceiling to install an
Amina loudspeaker be sure to check the
appropriate regulations pertaining to the
required fire rating. Depending on the
location of the intrusion and the applicable
regulations it may be necessary to build in
or install additional fire rated components
or products to enclose the speaker and
back box. Amina Technologies take no
responsibility for the correct specification
and installation of any such fire protection
system that is required behind their
loudspeakers.
SPEAKER PROTECTION:
Amina loudspeakers should be installed
with an APU or other suitable electrical
overload protection device. These devices
help ensure the loudspeaker operates
reliably for many, many years ahead, by
limiting and protecting against temporary
excessive audio signals that could damage
the product.
Common sense should always prevail
though. Your product should never be
operated at repeated or consistently
excessive audio levels. Never operate your
Amina loudspeakers at a level where audio
reproduction sounds distorted.
For the ultimate in protection, Amina
recommend using the Amina A100Q digital
amplifier to drive your loudspeakers. It
continuously prevents unwanted and
excessive electrical energy from reaching
the speaker whilst allowing it to perform at
its very best at all times.
METAL FRAME CEILINGS:
When installing in metal frame (MF) ceilings
(& walls), please ensure the assembled metal
frame is fully solid and secure and that all
metal mating joints are mechanically fixed
or bonded together. Metal joints that are not
tightly fixed have the potential to generate
spurious buzzing noises as the two free
edges rub against each other when activated
by the acoustic energy generated by the
Amina Loudspeaker. All debris, loose screws,
excess materials etc, should be removed from
above ceilings to avoid unwanted rattles.

2
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• To ensure optimal performance, please
read this guide carefully and keep in a
safe place for future reference.
• Install this product in a cool, dry, clean
place - away from direct sunlight,
cold bridges and heat sources, strong
vibrational forces, chemical fumes, dust
and moisture (steam).
• Do not expose this product to sudden
temperature changes or locate it in an
environment with high humidity. This
is to prevent condensation forming
inside which may cause damage to the
product.
• Do not clean this product with chemical
solvents as this may damage the finish.
Use a clean, dry or damp cloth.
• Ensure that all installation mounting
surfaces are able to support the weight
of the product and any mounting
accessories.
• After installation, avoid pushing on the
wall or ceiling surface immediately
in front of the speaker. Excessive
excursion can crack the plaster around
its perimeter and can damage the
loudspeaker.
• Do not attempt to modify or repair the
product. Contact your distributor or
Amina if a fault should occur.
• When plastering over, ensure only 2mm
of material covers the product. More
than this will degrade the performance
of the product and could lead to
product failure.
• Avoid the use of silicone sealants
within the area of the loudspeaker.
Sublimation of silicone will deposit a
thin layer of silicone material on the
panel surface, severely degrading the
ability of plaster to bond to its surface.
• You will require a minimum cavity depth
of 70mm behind the plasterboard for
installation of a MobiusiB.
• Prior to plastering, wipe the front panel
surface clean with a damp cloth.
Caution: Read before installing this product

3
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Environmental
• Before installing, ensure that the
building is environmentally sealed, de-
humidified to a maximum of RH50%,
and at a stable temperature of at least
16 degrees centigrade (61 degrees
Fahrenheit)
• This product should not be used with
single thick coat plaster solutions or
with other finishing methods that take
days (rather than hours) to dry out.
• Please be aware that when this product
is directly fitted into a solid brick, block
or concrete wall structure, vibrational
energy is inevitably transferred into the
solid wall structure. This energy can
travel for some considerable distance
up, down and along the structure. It is
therefore recommended the product
be fitted within acoustically isolated
stud walls or ceiling sections where
possible. The use of the product
directly embedded in solid walls is
not recommended in multi occupancy
buildings.
• Please be aware that when this product
is fitted in simple (stud or rafter with
plasterboard/floorboard attached on
either side) stud walls or wooden rafter
ceiling/floor structures, vibrational
energy is inevitably transferred into
the building structure. This energy can
travel for some considerable distance
up, down and along the structure. It is
therefore recommended the product
be fitted within acoustically isolated
stud walls or ceiling sections where
possible. Special care should be taken
when installing the product in multi
occupancy buildings.
• Completed and fully dried plaster
surfaces should be finished with
permeable coatings / materials, to
allow moisture in that coating or
the adhesives used to apply those
materials, to dry into the environment,
rather than trap moisture in the
speaker.
• During installation take care to use
appropriate and suitable joint filling
compounds to fill the gap between
speaker and the surrounding surface.
This gap should be no less than 2mm
and no more than 5mm in width.
Inappropriate compounds used in such
a joint can shrink and crack excessively
and lose strength.
Allow the joint to dry thoroughly
before applying surface skim coats,
as shrinking in the joint depth whilst
drying could create a very slight
embossed outline in the finished and
decorated surface.
• As a general rule in the construction
industry, any drying process should
be gradual rather than forced with
excessive heat otherwise materials can
lose strength and can crack.
• Amina Technologies take no
responsibility for inappropriate use of
materials and environmental conditions
under which they are applied.

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Sound in your home
Amina products are widely applied
in whole house audio systems and
multichannel home cinemas to create the
very best entertainment source whilst not
impinging on the design of your home.
Never imagine though that sound
reproduction is isolated to one room only
and will not be heard elsewhere in the
home. Sound from any audio source (a
person talking, a conventional speaker, a
TV or an Amina speaker) will transfer in air
through open doors, ventilation structures,
gaps under doors etc, to other areas of the
house. Sound will also pass mechanically
through the structure of the building (a
good example is the central heating boiler.
Most homeowners know exactly when it
is on!) to other areas quite some distance
away.
Whole house/multi-room audio systems
are designed to give you the very best
audio experience in the space/room you
might occupy at any one moment. This
does not mean to say that occupiers of
other rooms will not hear some of that
sound at the same time. They are more
than likely to experience it in some lesser
level and lesser quality than the intended
room.
Please remember therefore that it is
not always possible to enjoy the full
capabilities of your audio system when
other members of the household want to
remain undisturbed.
Sound in your work or
leisure environment
Amina products are widely applied in
prestigious retail, hotel, restaurant, office,
spa and other leisure facilities.
The Amina Active Sound Board technology
creates an incredibly even level of sound
across an entire space.
This creates an entertaining yet naturally
comfortable sound field for users and
occupiers.
At the same time the physical embodiment
of the speaker is totally unobtrusive,
allowing interior designers complete
freedom from technology.

5
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Message from the
Managing Director
Congratulations and thank you for
purchasing an Amina Technologies high
performance invisible loudspeaker.
At Amina we are proud of being at the
forefront of flat panel Active Sound
Board loudspeaker technology. All
the components that make up your
loudspeaker have been developed
specifically to provide the ultimate in
sound quality and reliability, whilst allowing
you to decorate, furnish and enjoy your
home in any way you wish without any
visible ‘clutter’ created by your audio
system.
At the heart of an Amina loudspeaker is our
high performance acoustic panel driver,
featuring a unique high power neodymium
magnet motor system. This enables the
product to provide high quality, high
loudness levels from such a compact
design. Please take a moment to read this
guide which will help you achieve the best
possible performance from your product.
Thank you and enjoy listening.
Richard Newlove
MD - Amina Technologies Ltd
About the Manufacturer
Amina Technologies Ltd is the world’s
leading designer and manufacturer of
truly invisible loudspeaker solutions. Our
flat panel loudspeakers have been used
in a wide range of both commercial and
residential applications for over twenty
years.
Luxurious hotels & spas, exclusive retail
outlets and stunning private residences
have all benefitted from using Amina
invisible loudspeakers, not only for its’
incredible aesthetic quality, but for its’
absolute ability to reproduce sensationally
clear audio across any space. Amina
has created the very best discrete audio
solution for architects, interior designers
and design conscious clients.
See our website for more details about
Amina and a selection of prestigious
projects completed using our products.

6
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Introduction
Thank you for purchasing Amina MobiusiB
series invisible loudspeakers. Properly
installed, these loudspeakers will provide
high quality sound for many years, even
decades, to come.
Installation options
Installation is simple, but should only be
attempted by professional building trades
with plastering experience and who have
completed an Amina installation training
course.
Please read the instructions carefully,
particularly the Installation section.
Unpacking
Check that your carton contains the
correct number of items and accessories.
Retain this Installation Guide. If you pass
the unit on to a third party make sure you
pass on the Installation Guide.
Packaging
CAUTION:
Take care when removing the loudspeakers
from the carton.
The packaging for Amina MobiusiB
loudspeakers has been carefully designed
to protect the product during transit.
Please retain it in the unlikely event you
need to return the product to your dealer
or to Amina. Please recycle the packaging
should you wish to dispose of it.
The outer carton is made up of 80%
recycled board.
Compatibility
This installation guide covers installation
of the Amina MobiusiB range of Invisible
loudspeakers into cavity walls and ceilings
of plasterboard construction.
Other installation guides are available
at www.aminasound.com for installing
MobiusiB series loudspeakers into walls
built with the following construction
methods -
• Drywall.
• Retrofit into a cavity wall that is already
plastered.
• Solid walls.
Always choose the installation guide that
matches the speaker and wall type for your
installation.
Ensure that the Amina MobiusiB is
mounted using the stainless steel
screws provided to avoid screw
head rusting causing marks in the
wet plaster.

7
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Overview
1. Tubular splice connectors
2. Button splice connectors
3. Lever splice connectors
4. Audio cable to amplifier
5. Mounting tab x 4
6. Integrated Backbox
7. Active panel surface
8. Mounting strips
The MobiusiB speaker is supplied with three connector options for the speaker wiring.
• Conventional tubular splices that require a crimp tool for fitting (non-removable).
• Button splices that require a pair of large pliers for fitting (non-removable).
• Lever splices that may be fitted by finger pressure alone (removable).
All three connectors are reliable. Choose the connector that best suits your installation.
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