Thiel Coherent Source CS.5 Technical Information Download Page 1

THIEL • 1026 Nandino Boulevard • Lexington, Kentucky 40511 • USA
Telephone: 859-254-9427 • Fax: 859-254-0075 • E-mail: [email protected]
Web: www.thielaudio.com

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Technical Information

THIEL CS.5

Coherent Source

®

Loudspeaker

This paper describes some of the technical performance aspects, design
considerations and features of the THIEL model CS.5 loudspeaker system. It is
intended to supply information for those who are interested in such matters. It is not
intended to imply that good measured technical performance is sufficient to
guarantee good sonic performance.

Summary of Contents for Coherent Source CS.5

Page 1: ...IEL CS 5 Coherent Source Loudspeaker This paper describes some of the technical performance aspects design considerations and features of the THIEL model CS 5 loudspeaker system It is intended to supply information for those who are interested in such matters It is not intended to imply that good measured technical performance is sufficient to guarantee good sonic performance ...

Page 2: ...ploy dynamic drivers Dynamic drivers have the advantages of providing a point source radiation pattern with good dispersion of sound over a wide area great dynamic capability good bass capability and a lack of rearward out of phase energy Another advantage of dynamic drivers is that their small size allows the multiple drivers to be arranged in one vertical line This alignment avoids the problem o...

Page 3: ...reated paper cone cast frame 1 diameter voice coil Underhung coil short coil long gap motor system Linear travel 1 4 pk pk Two magnets with total weight of 1 4 lb Copper pole sleeve Tweeter 1 aluminum dome with short coil ferrofluid vented pole to rear chamber reinforced chamber cup 55Hz 20KHz 55Hz 20KHz 3dB minimum 10 87dB 2 8v 1m 4Ω 3 2Ω minimum 30 150 watts 8 x 11 x 31 inches 35 pounds ...

Page 4: ...rities Diffraction Diffraction causes frequency response and time response errors and therefore a reduction in tonal spatial and transient fidelity Diffraction occurs when some of the energy radiated by the drivers is reradiated at a later time from cabinet edges or other sudden change of environment For musical signals that remain constant for a few milliseconds diffraction causes by constructive...

Page 5: ...ights provided the listener is 8 feet or more from the speakers PHASE RESPONSE We use the trade mark Coherent Source to describe the unusual technical performance of time and phase coherence which gives THIEL products the unusual ability to accurately reproduce musical waveforms Usually phase shifts are introduced by the crossover slopes which change the musical waveform and result in the loss of ...

Page 6: ...most speakers are not able to reproduce it recognizably That THIEL speakers reproduce the step so recognizably is the result of accurate phase time and amplitude response Figure 5 shows the step response of the CS 5 ENERGY STORAGE Any part of the speaker that absorbs energy will reradiate it later in time in a highly distorted manner Although not loud enough to be consciously heard stored energy c...

Page 7: ...cting on the coil becomes less intense because the coil is further from its rest position where the magnetic field is strongest This weakening of field strength as the coil moves away from its rest position is the primary distortion producing mechanism in woofers To eliminate this problem the CS 5 woofer uses a very unusual short coil long gap system where the coil is much shorter than the magneti...

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