Redlines own Martin Morecroft talks us through Amina, our demonstration facilities and Redlines very popular ‘White Glove Service’ for specifying and installing invisible audio.
Invisible loudspeakers
Sapphire ‘Plaster Over’ Range
Sitting behind a 2-3mm skim of plaster, the Amina Mobius invisible loudspeakers push the sonic boundaries of what is possible with plaster-over loudspeaker technology.
Discover the future of sound with Amina’s Sapphire Series, the latest innovation in hidden speaker technology. Powered by our breakthrough Symphony Cell composite panel, these concealed speakers produce warm, natural tones while maintaining unparalleled clarity. Our hidden in-ceiling speakers integrate seamlessly into residential and commercial spaces, disappearing behind plaster, wood, leather, or laminate finishes. Whether designing a multi room home audio system, hotel lobby, or wellness centre, the Sapphire Series delivers precise, high-clarity audio throughout every listening area. Celebrating 25 years of excellence, Amina speakers remain the most versatile and innovative hidden audio solution on the market.
Sapphire 250
The new Sapphire range of invisible loudspeakers represents the culmination of a quarter-century of research and developmentin Distributed Mode Loudspeaker (DML) technology. Building upon the legacy of its award-winning predecessors - the Mobius and Evolution ranges of fully covered invisible loudspeakers - The Sapphire Series 250 introduces a ground breaking approach to invisible audio.
Featuring the all-new proprietary ‘Symphony Cell’ resin-impregnated composite soundboard, a meticulously optimised aluminium frame and robust, proprietary drive units, the Sapphire range of invisible loudspeakers can be installed and operated under more extreme conditions of heat and mositure including saunas, steam rooms and exposed exterior locations. Intentionally crafted for a rich, bass-driven sound, these advancements provide a hi-fi experience that stands robustly on its own, requiring subwoofer augmentation only in the most demanding applications
Sapphire 375
The Sapphire 375 represents the pinnacle of innovation in the Sapphire range of invisible loudspeakers, marking the apex of over 25 years of cutting-edge research in Distributed Mode Loudspeaker (DML) technology. Building upon the award-winning foundation of the Mobius and Evolution ranges, the Sapphire 375 delivers an unparalleled listening experience with unmatched power, precision, and aesthetic integration.
Equipped with the advanced ‘Symphony Cell’ resin-impregnated composite soundboard, a meticulously engineered aluminium frame, and state-of-the-art proprietary drive units, the Sapphire 375 can be fully covered with an even greater range of finishes, adding particularly wet or long-curing materials such as lime plaster, clay plasters and spray-on plaster systems. Offering a rich, immersive audio experience without compromise, the Sapphire 375 is designed for discerning clients who demand the very best in invisible sound.
MOBIUS PLASTER ‘OVER’ RANGE
Sitting behind a 2-3mm skim of plaster, the Amina Mobius invisible loudspeakers push the sonic boundaries of what is possible with plaster-over loudspeaker technology.
Mobius7i
The Mobius incorporates OptiDrive and OptiDamping technology as well as Reduced-Resonance Exciter technology, offering greater low frequency extension and smooth high frequency dispersion all the way to the ultrasonic region.
Single panel no APU included
Use APUi70C_2, APU-RS8iC or APU-RS16iCPlaster in-wall /in-ceiling speaker
Dimensions: H/W/D (mm) 450 x 345 x 40
Power Handling: 75W RMS, 150W Peak
Frequency Response: 70Hz - 29KHz +/-6dB
Can be mounted in stud, joists, metal frame or Solid wall
Finish options; plaster, paint, wallpaper, wood veneer, corian
Mobius5i
The perfect price to performance Mobius product. Incorporating OptiDrive and OptiDamping technology as well as Reduced-Resonance Exciter technology, the Mobius range offers smooth high frequency dispersion all the way to the ultrasonic region.
Single panel no APU included
Use APUi50C_2, APU-RS8iC or APU-RS16iCPlaster in-wall /in-ceiling speaker
Dimensions: H/W/D (mm) 450 x 345 x 40
Power Handling: 50W RMS, 100W Peak
Frequency Response: 75Hz - 29KHz +/-6dB
Can be mounted in stud, joists, metal frame or Solid wall
Finish options; plaster, paint, wallpaper, wood, veneer, coria
Mobius5i/S200
The Mobius5i/S200 is a slimline alternative to the Mobius5i, measuring 200mm wide. The Mobius5i/S200 incorporates OptiDamping, OptiDrive and Reduced-Resonance Exciter technology to give smooth high frequency extension and low frequency performance with medium power-handling capabilities.
Single panel no APU included
Use APUi50C_2, APU-RS8iC or APU-RS16iC
Plaster in-wall /in-ceiling speaker
Dimensions: H/W/D (mm) 450 x 200 x 32
Power Handling: 50W RMS, 100W Peak
Frequency Response: 90Hz - 32KHz +/-6dB
Can be mounted in stud, joists, metal frame or Solid wall
Finish options; plaster, paint, wallpaper, wood, veneer, corian
Mobius3i
The Mobius3i is the smaller alternative in the Mobius range for use when there is limited stud/joist spacing. The Mobius3i can also be used to supplement Mobius speakers within a large project, providing a cost-effective solution for smaller rooms such as spare bedrooms or hallways.
The Mobius3i uses the same OptiDriver and OptiDamping technology found on the flagship Mobius7i invisible loudspeakers. The new ‘i’ update provides significant acoustic upgrades with the introduction of brand new proprietry high frequency transducers, as well as increasing the speakers sensitivity and reducing impedance to 4ohms.
Single panel no APU included
Use APUi30C_2, APU-RS8iC or APU-RS16iCPlaster in-wall /in-ceiling speaker
Dimensions: H/W/D (mm) 400 x 300 x 43
Power Handling: 30W RMS, 60W Peak
Frequency Response: 87Hz - 19KHz +/-6dB
Can be mounted in stud, joists, metal frame or Solid wall
Finish options; plaster, paint, wallpaper, wood veneer, corian
NEED HELP SPECIFYING OR INSTALLING THESE PANELS?
and find out how Redline’s specification and installation service can help
EDGE ‘Tape and join’ RANGE
Designed for drywall installations using tape and join walls / ceilings. Ideal for office / shop installs using 100v line with optional TX.
EDGE7i
Louder, deeper, and more efficient, the Edge7i goes down to an impressive 50hz +/- 6dB. Perfect for high-power residential/commercial distributed audio solutions and multi-channel surround sound systems.
Single panel no APU included
Use APUi70C_2, APU-RS8iC or APU-RS16iCPlaster "up to" in-wall /in-ceiling speaker
Dimensions: H/W/D (mm) 450mm x 345mm x 40mm
Power Handling: 75W RMS, 150W Peak
Frequency Response: 50Hz - 27KHz +/-6dB
Can be mounted in stud, joists, metal frame or Solid wall
Finish options; plaster, paint, wallpaper, wood veneer
EDGE5i
The Ultimate Plaster up to Invisible speaker sets a new standard at this price point. The perfect option for medium-power residential/commercial distributed audio solutions and multi-channel surround sound systems.
Single panel no APU included
Use APUi50C_2, APU-RS8iC or APU-RS16iC
Plaster "up to" in-wall /in-ceiling speaker
Dimensions: H/W/D (mm) 450mm x 345mm x 40mm
Power Handling: 50W RMS, 100W Peak
Frequency Response: 55Hz - 26KHz +/-6dB
Can be mounted in stud, joists, metal frame or Solid wall
Finish options; plaster, paint, wallpaper, wood veneer
EDGE3i
Furthering on the award winning Edge Series, the Edge3i has been reformulated into the 300mm smaller frame. Perfect for installations where there is reduced stud spacing.
Single panel no APU included.
Use APUi30c/RS8ic/RS16ic
Plaster "up to" in-wall /in-ceiling speaker
Dimensions: H/W/D (mm) 450mm x 300mm x 40mm
Power Handling: 30W RMS, 60W Peak
Frequency Response: 90Hz – 24KHz +/-6dB
Can be mounted in stud, joists, metal frame or Solid wall
Finish options; plaster, paint, wallpaper, wood veneer
bass
Compact ALF hidden in-wall/in-ceiling bass options
ALF100
The Amina ALF100SM passive subwoofer is designed to partner Amina invisible, in-wall panel speaker systems in applications such as home cinema systems and large room, high pressure stereo systems.
Dimensions: H/W/D (mm) 1066 x 409 x 99
Weight: 20Kg
Slot Ported
Power: Handling 200W
Nominal Impedance: 4 Ohms
Frequency Response: 30Hz-160Hz +/- 6dB
Sensitivity: 90dB @1m/2.83Vrms
ALF 50
New for 2025
The Amina ALF50SM passive subwoofer is designed to partner Amina invisible, in-wall panel speaker systems in applications such as home media systems and large room, high pressure stereo systems.
Dimensions: H/W/D (mm) 653 x 409 x 99
Weight: 9Kg
Slot Ported
Power: Handling 200W
Nominal Impedance: 4 Ohms
Frequency Response: 45Hz-165Hz +/- 6dB
Sensitivity: 90dB @1m/2.83Vrms
ALF40
ALF40
A compact bass-enhancer perfect for adding extra warmth and punch. The ALF40 is designed to integrate with all Amina Invisible speakers.
Dimensions: H/W/D (mm) 157 x 134 x 359
Weight: 3.2Kg
Ported Acoustic Bandpass with built in protection
Power: Handling 40W
Nominal Impedance: 8 Ohms
(4 Ohm in passive configuration)Frequency Response: 65Hz-155Hz +/- 6dB
(18dB/octave roll off)Sensitivity: 88dB @1m/1 W
ALF80
ALF80
Delivering a smooth, accurate and deep bass response at 108dB with only a small grill to show.
Dimensions: H/W/D (cms) 605 x 270 x 156
Weight: 9.2Kg
Ported Acoustic Bandpass with built in protection
Power: Handling 150W
Nominal Impedance: 4 Ohms
Frequency Response: 39Hz-140Hz +/- 6dB
(18dB/octave band pass)Sensitivity: 86dB @1m/2.83V RMS half space
Maximum SPL: 108dB
Accesories
FIREHOODS
PLASTERBOARD BACKBOXES
Amina's custom-designed firehoods offer an additional 60 minutes of fire protection
Fire Tested to BS EN 1363-1: 2012 in various ceiling and floor constructions
Fire Hood 200 for 200mm wide panels
Fire Hood 300 for Mobius3i and Edge3i Panels dimensions 550mm x 320mm x 102mm
Fire Hood 345 for Mobius and Edge panels dimensions 600mm x 360mm x 102mm
Retains fire integrity of the ceiling
Lightweight and flexible
Can be used in plasterboard ceilings and walls
Whichever speaker you choose, a Backbox can assist in giving consistent audio performance and limit rearward sound transmission. All are fitted with composite sound proofing material
CV200 (For 200mm wide panels)
Dimensions: H/W/D (mm) 500 x 206 x 71.5mm
Wall and ceilings back box for use with Mobius5i/S200
CV300 (For 300mm wide panels)
Dimensions: H/W/D 450mm x 306mm x 71.5mm
Wall and ceilings back box for use with Edge3i, Mobius3i
CV345 (For 345mm wide panels)
Dimensions: H/W/D (mm) 500 x 351 x 71.5mm
Wall and ceilings back box for use with Edge5i/7i, Mobius5i/7i
SOLID WALL BACKBOXES
Whichever speaker you choose, a Backbox can assist in giving consistent audio performance and limit rearward sound transmission. All lined with ‘Inno-Therm’ soundproofing baton and constructed from 304 Stainless steel.
SW200 (For 200mm wide panels)
Dimensions: H/W/D (mm) 455 x 209 x 50mm
Solid, brick and stone wall back box for use with Mobius5i/S200
SW300 (For 300mm wide panels)
Dimensions: H/W/D 405mm x 308mm x 50mm
Solid, brick and stone wall back box for use with Edge3i. Mobius3i
SW345 (For 345mm wide panels)
Dimensions: H/W/D (mm) 455.4 x 354 x 50mm
Solid, brick and stone wall back box for use with Edge5i/7i, Mobius5i/7i
PROTECTION UNITS
SINGLE channel protection units
Amina Protection Units make sure your speakers are safe and working at their best. Professionally installed panels with an APU are covered under warranty for 10 years in residential properties and 5 years commercial
Single channel high-pass filter featuring current sensing with self-resetting fuse protection
APUi30c - for use with Edge3i, Mobius3i, Mobius Dual and Mobius5i/S200
APUi50c - for use with Mobius5i and Edge5i
APUi70c - for use with Mobius7i, Edge 7i
8 CHANNEL PROTECTION UNITS
8 Channel rack mounted version of the Amina Protection Units. Can be used with all Amina residential panels.
8 Channel, 19 inch, 1U rack mounted protection unit
High-pass filter featuring current sensing with self-resetting fuse protection
Works with all panels
16 CHANNEL PROTECTION UNITS
16 Channel rack mounted version of the Amina Protection Units. Can be used with all Amina residential panels.
16 Channel, 19 inch, 1U rack mounted protection unit
High-pass filter featuring current sensing with self-resetting fuse protection
Works with all panels