User manual QSC AUDIO AD-C820 DATASHEET 09-01-10

[. . . ] AcousticDesignTM High-output Ceiling Mount Loudspeakers Features · 8" low-frequency woofer · 1. 4" diaphragm compression driver · 200 watt continuous power rating · 70V/100V multi-tap transformer included (system can operate in distributed or low-impedance mode) · AD-C820 transducer/baffle assembly for separated backcan installation · AD-C821 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. The AcousticDesignTM Series of installation loudspeakers has been designed for trouble free operation and versatility. [. . . ] When ordered as a system (AD-C821R SYSTEM; AD-C821S SYSTEM) a set of tile rails and a c-ring are included as is a round or square grille. The 8" woofer is equipped with a treated paper cone on a steel frame. In the optimized enclosure the usable low frequency of the system extends to 52 Hz. The 1. 4" compression driver fires through the center of the woofer and is acoustically mated to the woofer for a smooth transition at crossover. High-current, low tolerance network components provide smooth full-range, passive performance. The included 70V/100V, custom designed transformer is optimized for low line loss as well as accurate and transparent acoustic performance. The AD-C820/C821 loudspeakers measure 91dB sensitivity (1W/1m) and at full continuous power are capable of producing 114 dB SPL (1W/1m) output. AD-C820/C821 Specifications Configuration Transducers Low-frequency High-frequency Frequency Range1 Frequency Response (-6 dB) Useable Frequency Range (-10 dB) Maximum Output 2 Calculated Peak Output Calculated Continuous Output Nominal Coverage Nominal Impedance Power Rating RMS Power Handling3 Recommended Max Amp Power Sensitivity Bass Loading Transformers Type Taps Agency Rating Enclosure Volume Enclosure Connectors AD-C820 Passive 8" (203 mm) ferrite woofer 1. 4" (36 mm) neodymium compression driver 61 Hz ­ 18 kHz 52 Hz ­ 18 kHz 120 dB SPL 114 dB SPL 90° horizontal and vertical 16 200 W 400 W 91 dB SPL, 1W/1m Ported AD-C821 Custom low distortion laminated core, wide bandwidth design 100 V: 16 bypass, 100 W, 50 W, 25 W 70 V: 16 bypass, 100 W, 50 W, 25 W, 12. 5 W CE, UL 1480 (commercial/professional use) UL 2043 (air handling spaces) AD-C800BB: 18 L (0. 64 ft 3) Back box (AD-C800BB): ceramic block connector inputs and "through" connectors (rated for 400 W max). Loudspeaker Baffle (AD-C820): 10-pin MATE-N-LOKTM connector and faston connectors. AD-C820: 8 lb (3. 6 kg) AD-C800BB: 9. 5 lb (4. 3 kg) System Weight: 17. 5 lb (7. 9 kg) Diameter: 14. 9" (379 mm) Enclosure only Depth: 8. 3" (211 mm) Enclosure with mounting straps Depth: 11. 2" (284 mm) AD-C820R SYSTEM: includes AD-C820 speaker baffle, AD-C800BB backbox, AD-C800RG round grille AD-C820S SYSTEM: includes AD-C820 speaker baffle, AD-C800BB backbox, AD-C800SG square grille 18 L (0. 64 ft 3) Two 2-pin Euro-style connectors Mounting Hardware Captive, integral Mounting Clamps. Suspended ceiling Split-ring and Suspended Ceiling Tile Rails - sold separately. [. . . ] QSC and the QSC logo are registered trademarks of QSC Audio Products, LLC in the U. S. Patents may apply or be pending. please recycle 1675 MacArthur Boulevard · Costa Mesa, CA 92626 · Ph: 800/854-4079 or 714/957-7100 · Fax: 714/754-6174 AD-C820/C821 Spec Sheet - 09/01/10 qscaudio. com [. . . ]