Audison – The Epitome Of Instinctive Innovation
Since 1987 Italian audio virtuoso Audison has been crafting some of the world’s finest mobile electronics. It firmly believes that sound reproduction is a fascinating world where emotion and technology cohabit. Like any form of art, the greatest result is achieved when these two values embrace at their peak. Following this dogma, every project Audison develops is conceived with an attitude drawing from its love for music and a desire to challenge the existing standards. As Audison say, it’ll forever follow its istinto innovative.

Thesis Series - Beyond The Absolute
The illustrious history of the Thesis juggernaut began in the Marche region in eastern Italy; a geographical location world-famous for the production of esteemed musical instruments. Obstinately leaving no stone unturned during their arduous development, the Thesis range of components are designed to combine pristine boutique electronics with absolute musical fidelity. The ambition being that the components become completely transparent, leaving you solely with the emotion evoked by your music.

Design Ideologies
Many have said the Thesis range of speakers sound head and shoulders above the competition. This search for the best acoustic result started by overcoming the intrinsic limits of traditional loudspeakers. Through a finite element simulation software (FEM) conceived by the Audison engineering team a mathematical model was developed to create the ideal transducer. With the Thesis speakers the team reached a significant revolution; producing a speaker system that can reveal every minute detail and nuance from your high-end amplifier.

Design Features
When listening to the beautiful tones of the Thesis speakers you can tell immediate there is some unique and groundbreaking about them. Their clarity, their cleanliness, their superb response. Just everything about them is brilliant. Without further ado let’s have a look at what goes into them shall we?

Handling The Highs – The Thesis Violino Tweeter
The TH 1.5 II Violino project can be defined with only one word: unique. The materials, tolerances and assembly process were designed from scratch and without any compromise, to overcome the absolute. Extensive research has been dedicated to the selection of proper fibre size, textile weaving and profile geometry of the natural silk dome to obtain an extremely linear phase and frequency response up to 26 kHz; an exceptional goal for a 29 mm dome.

High Frequency Engine Room – The Motor
The top plate and T-Yoke are made of low-carbon content steel CNC machined from solid. A magnet tailored to the Audison TH 1.5 II has also played a key role on its compactness, allowing cables in pure OFC 16 AWG section copper to cross the whole magnetic / acoustic structure from the point of electrical contact with the coil terminals to the exit on the bottom case. In this way the cables are integrated without increasing the footprint.

Only a 34 mm coil would allow the TH 1.5 II to express its best in the most complex musical passages thanks to the low dynamic compression. A single layer copper clad aluminium wire is wound on an aluminium former, a material selected for optimal damping. The choice of the single layer and a higher than average electrical resistance of the car audio tweeters at 6.1 ohms derives from the need to combine a low thermal resistance to a relatively low weight winding considering the size of the voice coil.

The magnetic circuit was sized with a flux saturation which can guarantee a low residual inductance at high frequencies, thus not requiring a magnetic short-circuit solution such as copper rings. As these reduce the flux into the magnetic gap.

High Speed membrane – The Dome
Even more than in a cone speaker the tweeter membrane is directly responsible for its sonic characteristics. Even before designing and testing the profile the designers have selected the suitable varieties of silk membrane cataloguing them by the weaving material, density and damping treatments to characterize them with the use of the Klippel Scanning Vibrometer. Only after a thorough physical analysis of the various materials available and the creation of a refined model of vibro-acoustic simulation was it possible to offer a set of eleven different dome profiles. These profiles matrix-combined with the material variants in the finite elements simulation software generated 33 different combinations for as many frequency and phase responses. Three of these lived to see the light and have then been tested and subjected to extensive listening assessments, they’ve since been combined to form the current structure used in the TH 1.5 II so successful.

Rock Solid Foundation – The Body
The solidity of TH 1.5 II is also well noticeable in its mechanical all-metal structure, for a considerable weight of 370 g. Each part was designed exclusively for the TH 1.5 II including the screws. The faceplate, also made of die-cast aluminium; s a perfect example of harmony between elegance and technique. The Audison logo is cut into a solid piece of material that’s been finished using a CNC high precision machine. While the radial profile of the faceplate is engineered for minimum acoustic impact ensuring optimal frequency dispersion Unparalleled low-frequency roll-off has been achieved by a sophisticated air-loading system. A high precision aluminium die-cast bottom case offers an electro-acoustic load to lower the system total compliance for a resonance frequency below 800Hz.

Twelve radial vents around the T-yoke centre hole guarantee uniform pressure between the gap chamber and the bottom case. A high-density porous absorber under the dome combined with a disc of compressed felt minimises the resonances caused by internal geometries for a smooth frequency response over the whole range. All these measures result in an incredibly natural low-midrange reproduction and allow for crossover point with woofer starting as low as 1500 Hz. All efforts in the design would have been vain if the industrialization of assembly processes had not been obsessive. The dome and coil combination encompasses the real heart of the TH 1.5 II, for this reason its assembly is totally independent from the rest of the production. In a high automation department, using a high-density support reinforced with glass fibres. Allowing a 34mm diameter coil to extend at high frequency up to 26 kHz would have been unthinkable unless supported by an exhausting phase of tuning of the dome / former junction coupling, both in terms of choice of glue and geometry. A special high technology glue is applied using 3D robotic systems to ensure high repeatability of glue quantity and perimeter of application.

The TH 1.5 II tweeter has been developed with the aim of achieving the highest performance possible, as well as flexibility of in-car integration. This is why the engineering team offered two types of electro-acoustic loads; bottom case or bottom disk. By using the bottom case the low frequency response of the tweeter further extends so that the crossover point with the woofer can be lowered, for the benefit of the acoustic stage and image. When space is limited the bottom case can be removed and space saved using the bottom disk, with this still maintaining a high-performance level.

The Larger Siblings
Let’s turn our attention to the larger siblings within the Thesis stable; the cones. For these are the real musical powerhouses that produce the delectable middle and low tonality that must be heard to be believed.

Middle Business – The Thesis Voce Midrange
The human auditory system processes the range of medium frequencies with maximum sensitivity and selectivity because it makes the voice intelligible from the rest of the audio spectrum. Audison’s engineering team started from this simple principle to design a speaker dedicated to this fundamental range of frequencies from scratch. Their simple yet ambitious target was extreme linearity, in order to successfully reveal every single nuance.

The TH 3.0 II Voce is a pure mid-range specialized in the reproduction of the 250 – 3500 Hz range. It integrates perfectly with tweeters and woofers in a three-way system elevating the emission point in order to create an astonishing sound stage. The optimized force factor (BL) together with an FS lowered at 100 Hz allow it to obtain a QTS value of 0.48. This is ideal for a perfectly damped behaviour in the 400 – 800 Hz frequency range. All electroacoustic parameters have been optimized to maximize performance in small volumes such as in A-pillars and pod installations.

The TH 3.0 II Voce azimuth is refined for both on-axis and off-axis response. This is fundamental prerequisite to obtain a correct and realistic reconstruction of the sound stage in the car cabin.

Building The Foundation – The Thesis Sax Midbass
Remember above we said the dogma of the Thesis component sets was overcoming all the limits dictated by compromise-oriented design choices. This philosophy allowed Audison to obtain extreme performance from the TH 6.5 II Sax midbass driver, affording it the ability to capture every detail of the musical message with maximum transparency.

One ambitious goal for the larger driver, mainly because it can play quite high as a midrange too; is producing a frequency response as smooth as possible in all listening positions on or off axis. It it designed to distribute acoustic energy over a wide azimuth without any distortion in the frequency response. This allows the TH 6.5 II to play optimally when mounted in a door facing sideways; a situation where it’s not aligned with the listener.

Attractive Poling – The Magnet
Both the TH 3.0 II and TH 6.5 II feature N38 and N48 H-grade neodymium magnets. These magnets release a phenomenally high quantity of energy and are ultra stable in high temperature environments, thus ensuring an unparalleled dynamic. The geometry of the magnetic group has been optimized through finite element simulation software to maximize efficiency by concentrating the magnetic field in the gap. A great deal of research has been carried out to reduce the modulation of the voice coil inductance by magnetically saturating the motor pole and using an aluminium short-circuit ring that allows a greater extension when playing towards the midrange frequencies.

Reciprocating With accuracy – The Suspension
The development of the suspension system is a crucial element for every transducer, and these were no different. Requiring a lot of research work, the development team created computational models to simulate every aspect of the multi-physical behaviour of the loudspeaker. The spiders were designed thanks to a long series of mechanical simulations performed to define its structure. A large elastic surface with five waves ensured an improved distribution of the elastic force. The waves’ profile and gluing are optimised to obtain the best symmetry in the voice coil and basket connection areas. The spider composition is a mix of two fibre to achieve the best elastic linearity and without mechanical compression effects even at high excursion levels. Like the spider, the surround was also designed using mechanical simulations. The result is guaranteed by use of natural rubber IIR profile, optimized to ensure wide excursion through a maximisation of linear elastic behaviour without mechanical compression effects.

Rigid Holdings – The Basket
The mechanical structure of the TH 6.5 II is a perfect combination of design and performance. The aluminium alloy basket incorporates all the components ensuring high precision in the various couplings. The structure featuring four pairs of spokes allows for solidity and damping of the vibrations as well as offering very low resistance to the cone air flow. The wide spider distributes the elastic load optimally. A generously sized venting hole is protected by a filter cloth and prevents air compression phenomena under the spider. This eliminates deleterious resonance at medium frequencies. The central opening in the bottom plate ensures optimal decompression of the air column inside the voice coil and the output vortex splitters diffuse the turbulences.

Impressive Transparency – The Cone
During the design of the cone the engineering team selected TPX® thermoplastic polymer due to it’s excellent acoustic and mechanical features. More specifically, its low density and its high mechanical damping contribute to produce an exceptionally smooth frequency response in all possible listening positions. Being transparent, it leaves the precious Thesis diamond logo machined from a solid block of aluminium in full view. TPX® is injection moulded, a technique that has made it possible to create a variable thickness profile thus giving the structure even more rigidity.

Taking advantage of innovative finite element calculation methods that allow the simulation of the speaker overall vibro-acoustic performance, Audison designed a monolithic cone, which simply means it’s of one block including diaphragm and dust cap. This resulted in an extremely rigid structure with a single gluing point with the voice coil. This particular structure allows the cone vibration modes to be moved. A cone vibration mode is a frequency in which the cone is deformed introducing irregularities in the frequency response. These modes were shifted as much as possible towards the high frequency range, leaving the entire mid-frequency band free from any irregularities. This this provides the speaker with an extremely transparent and detailed voice in the mid-range and a stallion like kick in the lower frequency range.

Electrical Specifications
– Nominal configuration: three-way 6.5” & 3″ & 1.5” active component set
– Continuous power handling: 150 Watts
– Maximum power handling: 300 Watts
– Voice coil diameter: 50 mm
– Frequency response: 40 Hz – 45000 Hz
– Sensitivity: 87 dB
– DC resistance (Re): 4 Ohms
– Resonant frequency (Fs): 55 Hz
– Xmax: +/- 5.4 mm
– Compliance (Vas): 8.6 l
– Total Q (Qts): 0.43
– Mechanical Q (Qms): 5.3
– Electrical Q (Qes): 0.47

Physical Specifications
– Mounting diameter: 143 mm
– Mounting depth: 74.5 mm
– Weight: 4.6 kg

Documentation
– 1.5″ Specifications sheet
– 3.0″ Specifications sheet
– 6.5″ Specifications sheet
– User manual

Important Disclaimers
Given the dynamic nature of electronics industries these days; below are listed some very important specifics you need to be aware of.

Brand Authorization And Stock Sourcing
We are a fully authorised Australian dealer of this brand and all stock is sourced through legitimate channels. It therefore enjoys full Australian warranty, backing and support.

Pricing Structure
Whilst we endeavor to offer the best price possible, we ask that if you do find a better price elsewhere from an authorised dealer; please contact us. Also be aware that we regularly conduct group buys and sales, therefore pricing can sometimes be subject to change without notice.

Stock Structure
Being a dynamic store is conducive to our inventory constantly changing. We list only a small portion of our stable online, usually products most popular. Aside from these we also stock numerous other variants and configurations of these products, hence if you don’t see what you’re after please contact us.

Shipping
All our products are shipped with registered and insured postage. Upon ordering you’ll be issued with a receipt, a consignment note via which you can track your order, and we’ll also SMS you photos of the package for identification purposes.

Technical support
This last one we cannot emphasise enough! Please contact us if you require any further information or assistance with the setup and use of this product, especially pertaining to aspects more technical. As we want you to get the very best from this product.