QSC expands its range of passive ceiling speakers with high-output systems

At Integrated Systems Europe 2010, Amsterdam, QSC Audio debuted an extension to its AcousticDesign ceiling speaker range, with the release of two new high-output models: the AD-C1200 and AD-C820/C821. The AD-C1200 high-output ceiling mount loudspeaker system features 12" low frequency woofer, 1.75" diaphragm compression driver, 300W continuous power rating, and a 70V / 100V multi-tap transformer enabling the system to operate in distributed or low-impedance mode. The AD-C1200 has been designed for music playback, public address and distributed audio in applications that require high output from a ceiling mounted loudspeaker. The AcousticDesign Series of installation loudspeakers has been designed for trouble free operation and versatility. Utilising custom designed transducers and crossover networks, in combination with the acoustically optimised enclosure AD-C1200BB, the AD-C1200 embraces the AD Series philosophy by bringing the same versatility and reliability to high-ceiling applications. Each AD-C1200 includes the coaxial transducers, a transformer and a crossover network, factory mounted on a steel baffle. The baffle is designed to mount to the QSC enclosure or to any enclosure using industry standard transducer mounting dimensions sized about 2.5ft³ (7 liters). A square grille (AD-C1200SG) is available to complete the installation. The 12" woofer is made with a treated paper cone on a steel frame. In the optimised enclosure the usable low frequency of the system extends to 37Hz. The 1.75" compression driver fires through the centre of the woofer and is acoustically mated to the woofer for a smooth transition at crossover. The AD-C1200 loudspeaker system measures 93dB sensitivity (1W/1m) and at full continuous power is capable of producing 117dB SPL (1W/1m) output. The system achieves 85° axisymmetric coverage. This model is complemented by the AD-C820/C821, which features 8" low frequency woofer, 1.75" diaphragm compression driver, 200W continuous power rating, 70V / 100V multi-tap transformer and AD-C820 transducer/baffle assembly for separated backcan installation. The AD-C821 has been designed as a fully integrated blind-mount system. The AD-C820 and AD-C821 are acoustically identical and designed for music playback, public address and distributed audio in applications that require high output from a ceiling mounted loudspeaker. Both models use custom designed transducers and crossover networks, in combination with an acoustically optimised enclosure (AD-C800BB), or as a fully integrated, sealed system (AD-C821). Each AD-C820 includes the coaxial transducers, a transformer and a crossover network, factory mounted on a steel baffle. The baffle is designed to mount to the QSC enclosure. The AD-C821 is a fully integrated, factory sealed system using a ‘dog-ear’ style mounting scheme. An optional round (AD-C800RG) or square (AD-C800SG) grille is available to complete the installation. The 8" woofer is also equipped with a treated paper cone on a steel frame with the mated 1.75" compression driver firing through the centre. In the optimised enclosure the usable low frequency of the system extends to 52Hz. The system achieves 105° axisymmetric coverage. The AD-C820 loudspeaker system measures 91dB sensitivity (1W/1m) and at full continuous power is capable of producing 114 dB SPL (1W/1m) output. The 70V / 100V custom designed transformers which are included with all models are optimised for low line loss as well as accurate and transparent acoustic performance.