- Double-tuned, bass-reflex loaded cardioid-control subwoofer system
- Triple 18” woofer with all-carbon cone for high pressure loading
- 5.3" voice-coils for low power compression and accurate performance
- Large, centrally-located vent for improved breathing and low compression
- Selectable cardioid rearward rejection patterns with up to 42dB rearward rejection
- SIS pre-wired for very high damping and further reduced distortion (with ALC)
The BC543 is a self-contained, high-output cardioid subwoofer system for both permanent and portable applications. It is designed to offer a very high output, tight and accurate sub-bass response, as low-frequency extension of any Alcons pro-ribbon system.
By means of a front and rear located woofer configuration, in combination with dedicated processing, the system offers selectable cardioid low-frequency pattern control and excellent rear rejection (up to 42dB), without the need for additional cabinets.
Two state-of-the-art 18” long-excursion woofers with 5.3-in. voice-coil with vented triple-spider frame, Neodymium motor structure and all-carbon-fibre cone and dust cap are mounted in a direct-radiating configuration, with centrally-located X-Venting™; Taking more than 25% of the baffle surface, this port is designed to maximise the system’s breathing capacity, while minimising port-compression. The excursion capabilities of the 18” design, extends the output by 3.5dB compared to traditional 18” designs (not included in SPLpeak spec).
On the rear side, a single state-of-the-art 18” long-excursion woofer with 5.3-in. voice-coil, Neodymium motor structure and all-carbon-fibre cone and dust cap is mounted in a direct-radiating configuration, with Flank-Venting™ port; This folded port design enables optimal reflex-breathing, under minimal baffle dimensions.
The BC543 in road version is fitted with 12 handles for easy logistics.
The BC543 is powered and controlled by the ALC amplified loudspeaker controller; The ALC offers system-specific drive processing with dedicated optimisation, power and excursion protection, and hybrid filtering.
The preset library contains BC543 settings for sub/bass/punch response curves, as well as different cardioid patterns for maximum rear-/side-ward attenuation.
Through the SIS™ (Signal Integrity Sensing) circuit, the cable-length and connector resistance between the BC543 and ALC is completely compensated (system damping factor >10.000), for further increased accuracy and controlled cone-travel, resulting in a tighter sub and bass response.