DIAPHRAGM
Ø 18" CONE WITH 18 g MASS
multi-axial carbon fibre & polyethylene terephthalate composite
MAX LOAD
100 000 x
mass of part
MAGNETS
NEODYMIUM RARE EARTH MAGNETS
permanent magnets with high magnetic flux strength
10.89
Boron
B
5
55.85
Iron
Fe
26
144.24
Neodymium
Nd
60
COILS
2 x Ø 82mm COPPER COILS
8 Ω RESISTANCE
- capable of converting 500A / 1000W to kinetic energy
- can be wired in series or parallel
- reinforced by carbon fibre sleeve
PUSH / PULL DRIVE
coils above and below diaphragm prescribe position at all times and produce "lightning fast" response
CORE
>16kg precision machined component
FUNDAMENTAL COMPONENT IN TORUS DESIGN
THERMAL TRANSFER
acts as a heat sink to conduct heat away from the coil
STRUCTURE
conducts structural borne resonance directly to ground
MAGNETIC FLUX
combines magnetic flux to create push-pull drive
STRUCTURE
PRECISION LASER CUT BRACE
optimised to provide structure while maximising cabinet volume
PERFORMANCE
FREQUENCY RANGE: 10Hz - 150Hz
PEAK OUTPUT: -6dB at -18Hz
SENSITIVITY: 100dB at 1m
CABINET
PIANO BLACK GLOSS FINISH
minimalist cylindrical design
"Strokes of genius are rare in any field,
but I think Milnes’ Torus qualifies”
"Strokes of genius are rare in any field,
but I think Milnes’ Torus qualifies”
The Torus places an 18” light-weight, super-stiff, multi-axial Carbon Fibre cone at the end of a phenomenally powerful push-pull motor. Unlike a common subwoofer that relies upon a high hysteresis suspension to reset the cone to zero, the cone position in the Torus is dictated at all times by electromagnetism. The result is low frequency sound with absolute precision and integration across the frequency range.
At the heart of the Torus is the core, a formidable 16kg precision machined steel column, with the two large rare earth magnets of the push-pull motor either side. The core is the reference point for every other component in the design, acting both to focus structural borne resonance directly to earth with zero reference to the outer enclosure and also a high capacity heat sink.
In the Torus, where huge amounts of low frequency energy are generated, thermal efficiency is a critical concern. In addition to the steel core, Wilson Benesch developed a Boron Nitride coil in collaboration with Oxford University. Boron Nitride offers the high electrical conductivity required by any coil design, but its thermal conductivity supersedes that of copper by several orders of magnitude.
The elegant and minimal toroidal shape of the Torus is a testament to the use of purist geometry in every component. Whether it be often earth shattering low frequencies in a home cinema, or the attack and dynamics of a drum solo, the Torus never misses a beat or fails to deliver the physical impact that we know and love of low frequency sound.
The Torus places an 18” light-weight, super-stiff, multi-axial Carbon Fibre cone at the end of a phenomenally powerful push-pull motor. Unlike a common subwoofer that relies upon a high hysteresis suspension to reset the cone to zero, the cone position in the Torus is dictated at all times by electromagnetism. The result is low frequency sound with absolute precision and integration across the frequency range.
At the heart of the Torus is the core, a formidable 16kg precision machined steel column, with the two large rare earth magnets of the push-pull motor either side. The core is the reference point for every other component in the design, acting both to focus structural borne resonance directly to earth with zero reference to the outer enclosure and also a high capacity heat sink.
In the Torus, where huge amounts of low frequency energy are generated, thermal efficiency is a critical concern. In addition to the steel core, Wilson Benesch developed a Boron Nitride coil in collaboration with Oxford University. Boron Nitride offers the high electrical conductivity required by any coil design, but its thermal conductivity supersedes that of copper by several orders of magnitude.
The elegant and minimal toroidal shape of the Torus is a testament to the use of purist geometry in every component. Whether it be often earth shattering low frequencies in a home cinema, or the attack and dynamics of a drum solo, the Torus never misses a beat or fails to deliver the physical impact that we know and love of low frequency sound.
"Adding the Torus transforms the timing and integration of the instruments. The picked melody is more fluid, quicker and more sinuous, the snare more snappy and insistent, the space around the instruments much more apparent, with walls and a floor. Suddenly the music takes on a feeling of underlying urgency that dovetails perfectly with the lyrics”
FINISHES
DESIGN
DIMENSIONS
PERFORMANCE
Precision machined MDF cabinet with steel bracing
Sealed enclosure
Super low compliance suspension.
18" carbon fibre diaphragm
Diameter: 450mm ( 17.7")
Height: 330mm ( 12.9")
Weight per unit: 32kg ( 70.5lbs)
Internal volume: 24L
Impedance: 8Ω per coil (can be wired in series or parallel)
Frequency response: 10Hz - 150Hz
Peak: -6dB at 18Hz
Sensitivity: 100dB at 1 metre
Biwireable
1000W peak program
Black piano gloss cabinet
Black anodised linished terminal block
High gloss carbon fibre diaphragm
Polished chrome anodised exterior pole component
explore
IN 3d
click the image to launch
Wilson Benesch Ltd | Falcon House | Limestone Cottage Lane | Sheffield | United Kingdom | T +44 (0)114 285 2656
Designed and Built by Wilson Benesch 2019 | All rights reserved
INFRASONIC GENERATOR
The Torus places an 18” light-weight, super-stiff, multi-axial Carbon Fibre cone at the end of a phenomenally powerful push-pull motor. Unlike a common subwoofer that relies upon a high hysteresis suspension to reset the cone to zero, the cone position in the Torus is dictated at all times by electromagnetism. The result is low frequency sound with absolute precision and integration across the frequency range.
At the heart of the Torus is the core, a formidable 16kg precision machined steel column, with the two large rare earth magnets of the push-pull motor either side. The core is the reference point for every other component in the design, acting both to focus structural borne resonance directly to earth with zero reference to the outer enclosure and also a high capacity heat sink.
In the Torus, where huge amounts of low frequency energy are generated, thermal efficiency is a critical concern. In addition to the steel core, Wilson Benesch developed a Boron Nitride coil in collaboration with Oxford University. Boron Nitride offers the high electrical conductivity required by any coil design, but its thermal conductivity supersedes that of copper by several orders of magnitude.
18" CARBON FIBRE DIAPHRAGM
The powerful push pull motors are capable of handling 500 amperes, converting over 1,000 watts of electro magnetic energy into kinetic energy. As a result, the Torus cone is subjected to huge compression and decompression forces. In order to deal with these forces, Wilson Benesch developed a carbon fibre diaphragm.
Carbon fibre is renowned for its high strength-to-weight ratio, and this property makes it the ideal for the Torus cone. A novel multi-axial carbon fibre weave developed by the company is used to create a phenomenally stiff, light and highly damped diaphragm.
Thus, despite its relatively small size, the Torus boasts an 18” diaphragm, that weighs in at just 18g and yet is capable of displacing huge volumes of air instantaneously. Transients are handled with ease, giving rise to the chest moving kick drum and attack, impossible to achieve with a conventional subwoofer design.
PUSH / PULL DRIVE
Huge 82 mm diameter motor coils are deployed on both sides of the diaphragm in order to provide for perfectly balanced kinetics. This novel “push pull” is often seen in other engineering applications, where maximum control and power transfer is required.
While the Torus motor converts electrical energy from the amplifier into kinetic energy in the same way as a regular woofer, the fundamental difference comes from a push-pull motor design. Unlike a common subwoofer that relies upon high hysteresis suspension to reset the cone to its resting point, the cone position of the Torus is dictated at all times by electromagnetism. This enables the Torus to reproduce low frequency sound with a stunning degree of precision and allowing the reliable communication of transient low frequency information.
The powerful push-pull motor is capable of handling 500 amperes, converting over 1000 watts of electromagnetic energy into kinetic energy, generating huge compression and decompression forces.
NdFeB MAGNETS
Two Neodymium Rare Earth Magnets are deployed either end of the core to create a dual motor push / pull drive.
CORE
As its name suggests, the Core is at the heart of the Torus design.
It is a formidable structural element of Brunelian proportions.
Weighing in at over 16 kg, the precision machined assembly,
combines with high energy Rare Earth magnets to create a dual
motor / push pull drive.
The Core also provides a number of other important benefits that
are elaborated upon below:
1. Converts electrical energy into kinetic energy.
2. High capacity metal sink conducts all structural borne resonant energy directly to ground with zero reference to the outer enclosure.
3. High metal mass efficiently conducts all heat away from the coils.
INTERNAL BRACE
A precision laser cut steel brace resides beneath the slick Piano Black Gloss Torus enclosure. This component stiffens the cylindrical form of the enclosure further.
CYLINDRICAL CABINET
Finished to the same exacting standards as the rest of the Geometry Series, the Torus Infrasonic Generator comes in a slick and understated Piano Black Gloss finish.
Technology
REVIEWS
awards
Product of the Year
The Absolute Sound
2006, USA
Technology Award
What HiFi?
2007, UK
Best Buy
Hi-F Choice
2007, UK
Product of the Year
Hi-Fi+
2008, UK
<
>
DESIGN
DIMENSIONS
PERFORMANCE
FINISHES
Precision machined MDF cabinet with steel bracing
Sealed enclosure
Super low compliance suspension.
18" carbon fibre diaphragm
Diameter: 450mm ( 17.7")
Height: 330mm ( 12.9")
Weight per unit: 32kg ( 70.5lbs)
Internal volume: 24L
Impedance: 8Ω per coil (can be wired in series or parallel)
Frequency response: 10Hz - 150Hz
Peak: -6dB at 18Hz
Sensitivity: 100dB at 1 metre
Biwireable
1000W peak program
Black piano gloss cabinet
Black anodised linished terminal block
High gloss carbon fibre diaphragm
Polished chrome anodised exterior pole component
SPECIFICATIONS
gallery
Click an image and then swipe to view the gallery
download manual
find your
closest dealer
Wilson Benesch Ltd | Falcon House | Limestone Cottage Lane | Sheffield | United Kingdom | T +44 (0)114 285 2656
Designed and built by Wilson Benesch 2019 | All rights reserved