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Thiel Coherent Source CS.5 - User Manual

Thiel Coherent Source CS.5
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THIEL • 1026 Nandino Boulevard • Lexington, Kentucky 40511 • USA
Telephone: 859-254-9427 • Fax: 859-254-0075 • E-mail: mail@thielaudio.com
Web: www.thielaudio.com 5/00
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.
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Summary

THIEL Design Philosophy

Performance Goals

Identifies four key areas for describing musical performance: tonal, spatial, transient, and dynamic fidelity.

Fundamental Design Considerations

Discusses natural spatial reproduction, dynamic drivers, and challenges like diaphragm and cabinet resonances.

Technical Requirements

Translates musical performance goals into technical requirements, focusing on accuracy and fidelity.

Design Goals

Lists the major technical design goals derived from technical requirements, such as uniform frequency response and low distortion.

THIEL CS.5 Specifications

Woofer Specifications

Details the CS.5 woofer: size, radiating area, cone material, voice coil, motor system, and magnet configuration.

Tweeter Specifications

Details the CS.5 tweeter: aluminum dome, short coil, ferrofluid, vented pole, and reinforced chamber cup.

Design and Engineering Features

Frequency Response

Focuses on achieving accurate tonal balance through uniform octave-averaged response and minimizing errors.

Driver Response

Explains how aluminum diaphragms and low resonance frequencies contribute to accurate driver performance.

Diffraction Reduction

Describes the CS.5's curved grille board design to minimize cabinet edge diffraction and improve fidelity.

Off-Axis Response

Highlights the importance of uniform off-axis response for natural spatial reproduction and consistent sound character.

Time Response and Phase Coherence

Time Correction

Explains how driver placement and a sloped baffle ensure sound arrives simultaneously, preserving spatial and transient cues.

Phase Response (Coherent Source)

Details the use of first-order crossovers for phase coherence, avoiding waveform alteration and preserving musical accuracy.

Energy Storage Reduction

Step Response

Illustrates the speaker's ability to reproduce a step waveform accurately, demonstrating phase, time, and amplitude accuracy.

Cabinet and Driver Construction

Discusses thick MDF cabinets and cast magnesium/aluminum chassis to minimize stored energy and improve clarity.

Distortion Minimization

Driver Motor Systems

Explains how copper sleeves, short coil/long gap motors, and inductance control reduce distortion in the woofer.

Thiel Coherent Source CS.5 Specifications

General IconGeneral
BrandThiel
ModelCoherent Source CS.5
CategorySpeakers
LanguageEnglish

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