Specifications

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The acoustically identical AD-C820R/S and
AD-C821R/S loudspeakers measure 91dB sensitivity
(1W/1m) and at full continuous power are capable of
producing 114 dB SPL (1W/1m) output.
AD-C1200
The AD-C1200 is designed for systems that require high-
output, large format ceiling mounted loudspeakers.
Utilizing custom-designed transducers and crossover
networks, in combination with an acoustically
optimized enclosure, the AD-C1200 continues the
AcousticDesign™ Series philosophy to bring this same
versatility and reliability to high-ceiling applications.
Each AD-C1200 has coaxial transducers, a transformer
and a crossover network factory-mounted on a steel
baffle. The baffle is designed to mount to the QSC
enclosure (AD-C1200BB) or to any 2.5 ft
3
enclosure
using industry-standard transducer / baffle mounting
points. A square grille (AD-C1200SG) is available to
finish the installation.
The 12" woofer is made with a treated paper cone
on a steel frame. In the optimized enclosure, usable
low frequency of the system extends down to 37 Hz.
The 1.75" compression driver fires through the center
of the woofer and is acoustically mated to the woofer
for a smooth transition at the crossover. Collectively
these transducers achieve an 85 degree axisymmetric
nominal coverage.
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.
AcousticDesign™ Series
Ceiling Loudspeakers
Installed Sound
AD-C820/821
The AD-C820R/S and AD-C821R/S (R for Round
Grille and S for Square Grille) loudspeaker systems
are designed for systems requiring high SPL output in
a ceiling mounted loudspeaker. These loudspeakers
continue the AcousticDesign™ Series philosophy
of bringing natural and accurate sound quality,
combined with versatility and reliability, to high-ceiling
applications.
Their 8" woofer features a treated paper cone
mounted on a steel frame, while optimized
enclosures offer low frequency of the system down
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.
Collectively, both transducers achieve a 90 degree
axisymmetric nominal coverage.
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-C820R/S Systems ship with the AD-C800BB
backcan and are perfect for pre-installed applications.
The AD-C821R/S Systems incorporate a fully integrated,
factory sealed enclosure and use “dog-ear” style
mounting - perfect for blind mount installations. Both
models also include a set of tile rails and C-rings to
complete the installation.