T Series Technologies Explained
CONTENTS 1 INTRODUCTION PART 1 - T SERIES COMPONENTS 2 ULTRA SLIM BASS DRIVER 3 LARGE NEW VENTED TWEETER 4 TOTAL SYSTEM DESIGN PART II - T SERIES TECHNOLOGIES 5 VENTED TWEETER 6 TWIN LAYERED MF DRIVER 7 TANGERINE WAVEGUIDE 8 SLIM SYSTEM DESIGN 9 WALL-MOUNT BASS EXTENSION 10 Z-FLEX SURROUND KEF T Series Technologies Explained 2
INTRODUCTION With a flat screen TV, you want speakers to match. Really flat. More impor tantly, you also want to fill the room with high definition 3D sound that’s every bit as involving as what’s on screen. The best of home theatre With KEF’s new T Series, you get exceptionally slim profile speakers that generate all the intricacy, spaciousness and dynamic range of a high end conventional design. You’d expect no less from KEF.
The new T Series is aimed at delivering true hi-fi performance in ultra-shallow speaker enclosures to meet the demand for speaker systems to physically match the new generation of OLED and LED TVs.
• CAD cutaway showing the new T-Series midrange driver mounted into the T-Series cabinet. LARGE NEW VENTED TWEETER In recent years KEF has made great progress in tweeter technology and for the new T-Series we have been able to use some of the technology we use in our high end products. The diameter of the tweeter has been increased to 25mm instead of the 19mm that is more usual on products of this kind.
All of this means that the T2 is an ideal subwoofer if you want a ‘no compromises’ performer without the hassle of a large box that just doesn’t look right in your room; whether you are listening to your favourite music or watching the latest Hollywood blockbuster. PART II T SERIES TECHNOLOGIES VENTED TWEETER The T-Series has a Vented Tweeter. This increases the amount of air enclosed behind the dome to reduce distortion of the sound.
TWIN LAYERED MF DRIVER The T-Series Midrange Driver features a twin layered radiating diaphragm. This technology (patent pending) allows the driver to be slim and flat whilst still maintaining pistonic motion up to a high frequency. The design has been optimised by finite element analysis. Slim Driver The Slim System Design means the the Midrange Driver can be only 27mm deep.
SLIM SYSTEM DESIGN Satellite speakers designed to match the current generation of plasma and LCD flat panel TVs typically have a depth of around 100mm (4 in.). The KEF KHT6000, for example, is one of the shallowest at a basic speaker depth of 85mm. However, the latest LED and OLED flat TVs are significantly shallower than this and there is a definite requirement for speaker systems of similar depth propor tions but with true hi-fi performance.
Z-FLEX SURROUND An impor tant feature of the T Series Midrange Driver is the new Z-Flex Surround. The surround is a critical component of any bass/midrange driver. The designer must carefully choose the material and shape so as to avoid irregularities in the midband response due to resonance in the moving par ts whilst at the same time allowing sufficient excursion of the cone in order to reproduce bass frequencies. Most modern drivers use a half-roll design typically moulded from butyl rubber.
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