CSS3 - small-format reference surround

  • 1” soft-dome tweeter with 6.5” HiFi-grade woofer
  • 72Hz. – 20.000Hz. (+/- 3dB)
  • 16 ohms impedance for economical powering
  • Wide dispersion H 90° x V 60°
  • 15° slanted baffle for optimised projection in small rooms

Product description

The CSS3 is a 2-way ultra-compact cinema surround loudspeaker. Featuring a 1” soft-dome tweeter with single 6.5” very high quality “HiFi-grade” woofer, the CSS3 delivers exceptional performance from a very compact and efficient package.

Despite the small size, the CSS3 delivers dynamic, uncoloured and very low-distortion sound reproduction, while the system voicing is specifically matched with Alcons’ pro-ribbon cinema sound systems.

The 16 ohms impedance enables an economical powering of up to 24 units (2.7 ohms) on an ALC amplified loudspeaker controller (4 channels driven). The system includes dedicated (passive) filtering and system equalizing.

The 15° slanted baffle together with the wide horizontal dispersion caters for a very smooth LF/HF blending, in installations where the surrounds are mounted closely to the audience. The CSS3 dedicated bracket enables optimized projection.

The enclosure design provides for low profile wall mounting, with the reflex vent located on the underside of the cabinet. The CSS3 comes with a flush-mount wall plate and has an optional swivel mounting (wall) bracket.

The CSS3 is powered and controlled by the ALC amplified loudspeaker controller,  offering CSS3-specific drive processing with response optimisation, dedicated power and excursion protection, guaranteeing maximized  performance with full system reliability and minimized maintenance.

For perfect interior blending, the CSS3 is available in any color, through the Architect Color Option (ACO™) program.

Dimensional drawing

Technical specifications

Frequency response 67 Hz – 20.000 Hz (+/- 3 dB)
47 Hz - (+/- 10 dB)
Sensitivity nominal 89 dB (200 Hz - 10 kHz)
Nominal impedance   16 ohms
Recommended drive Sentinel3 min., max. 6 pcs. per channel (2.7 ohms)
Nominal SPL peak 113 dB (Sentinel3 200 Hz - 10 kHz)
118 dB (Sentinel10 200 Hz - 10 kHz)
Dispersion H x V 90° x 60° (nom.)

Physical specifications

System 2-way, full-range
Filtering passive
Driver LF 1x AMB6.5 6.5”, vented
Driver HF 1x AST1 1” soft-dome tweeter
Connectors spring-loaded terminals
Physical dimensions  mm                 inches
Height 319                    12.6
Width 248                    9.8
Depth 202                    8.0
Weight (approx.) 5,2 kg               11.5 lb
Warranty 6 years limited

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