CLS 50c - Loudspeaker

Designed to match the CLS 50. The CLS 50c audiophile centre channel loudspeaker, is designed to make the most of the demanding digital dialogue information, so important to the success of multi-channel soundtracks. Being a Cyrus loudspeaker, the 50c must also be outstanding in its ability to replay demanding music programme. The compact enclosure incorporates the same tweeter as the CLS 50 and smaller base drivers from the same series, this ensures perfect tonal matching. Recommended to match amplifiers of 50 - 100 Watts.

The compact size and elegant proportions of the CLS50C complement the CLS50 perfectly, together forming a Home Theatre loudspeaker system with a performance which belies their size. The slim cabinet design is made possible through FEA computer modelling technology which is used to optimise the size and placement of internal cabinet bracing for the proportions of the cabinet. This minimises radiation from the upper and lower cabinet walls which can colour the sound of other centre channel loudspeakers.

With the cabinet volume carefully matched to the CLS50 and using drive units selected from the same family, the CLS50C is voiced to match the character and range of the CLS50. This provides the integration necessary between the sound character of the critical dialogue channel and all other matched channels in the system for the reproduction of moving voices and panning special effects.

The 1” silk dome tweeter achieves high linearity and low hysteresis due to an unusually large surround. The surround acts as a second radiating element in addition to the dome. Careful optimisation of the moving structure and its faceplate loading has allowed exceptional control of the drivers directional characteristics. The result is excellent integration between the two drivers. Low viscosity ferro-fluid is used to increase the power handling while preserving micro detailing and stereo focus.

The bass units incorporate a number of technologies combining to provide extremely high performance for the size of the driver. A specially shaped termination to the cone controls resonance allowing natural voicing even under high power. The vented magnet and coil former reduces compression and improves resolution. An advanced polymer chassis material stops “ringing” in the basket of the driver.

The dual gas-flowed reflex port design is used in all Cyrus loudspeakers and enables us to allow these compact boxes to provide stronger and more controlled bass than would normally be prudent for the size of the cabinet.

Technical Information


Enclosure - MDF with a selection of real wood veneer finishes. 
Grille - Removable, with cabinet clearance to avoid grille vibration. Damping Dual layer, deep sculptured polymer.


L.F. Units - 2 x 4" (98mm) with vented magnet and coil former. Low resonance advanced polymer chassis material.
H.F. Unit - 1" (25mm) exposed silk dome.
Cross-Over - Second order, high-grade components.
Input Connections - Bi-wirable multi-way binding posts. 

Enclosure Type - 2-Way Reflex Loaded with rear-facing port.
Frequency Response - 50Hz to 20kHz -3dB Point 55Hz
Sensitivity -  SPL/m/2.83V 86dB
Cross-Over Frequency - 2.5kHz
Effective Volume - 8 Litres
Nominal Impedance - 8 Ohms
Recommended Amplifier - 40-100 W/Ch
Cabinet Dimensions - (W x H x D) 430 x 130 x 260(mm)
Finish - Maple, Cherry or Black Ash real wood veneer

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