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Audison Thesis TH 6.5 II SAX

£1,149.99 inc. VAT
Designing a speaker for performance without compromise is a very complex under taking. Not only does cone geometry need to be spot on, its components require engineering to the highest degree. Surround and Spider construction needs to control the movement of the cone without any distortion or mechanical compression. The voce coil needs to be able to work efficiently and dissipate large amounts of heat generated at high levels without changing the electro mechanical performance. The highest possible efficiency is required to allow every nuance of music to be clearly defined and heard. This means low level sound should sit alongside high level sounds without being lost or distorted in anyway. The toughest of brief's for any manufacturer and we can think of no other as capable of realising it as Audison. In this product, the devil is very much in the meticulous detail. A mere list of electrical specifications and mechanical materials used only scratches the surface. This exceptional product needs to be heard to be believed!
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TOTAL TRANSPARENCY
 
The TH 6.5 II Sax was born from a blank sheet with the aim of overcoming all the limits dictated by compromise-oriented design choices. This philosophy allowed us to obtain extreme performance and a design projected into the future, faithful to the inspiring principle of maximum transparency of the musical message.
 
MAXIMUM LINEARITY, MINIMUM INDUCTANCE, EXCELLENT VENTILATION
 
The magnetic circuit uses a N48 “H-grade” Neodymium magnet that releases a very high quantity of energy and is ultra stable in temperature, ensuring an unparalleled dynamic. The geometry of the magnetic group has been optimized through a 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 also allows a greater extension towards the mid frequencies.
 
TOTAL ABSENCE OF MECHANICAL COMPRESSION
 
The development of the suspension system, a crucial element for each transducer, required a long research work: the development team created computational models to simulate every aspect of the multi-physical behavior of the loudspeaker. The spider was designed thanks to a long series of mechanical simulations performed to define its structure: a large elastic surface with 5 waves, ensuring an improved distribution of the elastic force; waves profile and gluing optimized to obtain the best symmetry in the voice coil and basket connection areas; spider composition made of a mix of two fibers to achieve the best elastic linearity, 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; maximization of linear elastic behavior without mechanical compression effects.
 
TOTAL ABSENCE OF THERMAL COMPRESSION
 
The 50 mm mobile coil in CCAR (Copper Clad Aluminum Ribbon), wound with flat wire to obtain a very compact winding, maximizes the force factor and at the same time allows for optimal heat dissipation.
 
TOTAL ABSENCE OF AERODYNAMIC COMPRESSION
 
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 offering very low resistance to the cone air flow. The wide spider distributes the elastic load optimally. A generously sized hole, protected by a filter cloth, prevents air compression phenomena under the spider, eliminating 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 expanded material diffuses the turbulences and protects it from ingoing foreign bodies.
 
TECHNICAL SPECIFICATION
 
Size: 165 mm (6.5?)
Power Handling: 150 W Continuous Power, 300 W Peak
Impedance: 4 ohms
Frequency Response: 40 - 4500 Hz
Sensitivity: 87 dB/Spl
Magnet: N48 “H-grade” Neodymium
Cone: TPX®

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