AD-C8T-ZB
The ceiling-mount 2-way co-axial system shall incorporate a 8-inch woofer with treated-paper cone and a common-motor integrated coaxial HF compression driver.

The system shall meet the following performance criteria: conical coverage angle of 90 degrees; frequency response of 58 Hz to 20 kHz +0/-10 dB, measured on axis; sensitivity of 92.5 dB SPL in half space at 1 meter with an input of 2.83 V rms; maximum continuous output of 114 dB SPL; maximum peak output of 126 dB SPL on axis at 1 meter; power handling of 200 watts for 2 hours with an IEC noise signal; recommended amplifier power of 300 watts; nominal impedance of 8 ohms.

The loudspeaker shall have a switchable low-distortion, wide-bandwidth laminated core transformer with taps for 200, 100, 50, and 25 watts at 70V and 200, 100 and 50 watts at 100V. The system shall be switchable between 8Ω (bypass) and constant-voltage operation.

The loudspeaker shall have a powder-coated steel back can. The Zero-Bezel grille shall have a white (RAL 9010) paintable finish with UV inhibitors to prevent discoloration. The baffle shall retain the Zero-Bezel grille magnetically. Any logo on the grille shall be removable without leaving a blemish.

The loudspeaker shall have a double-stepped long-travel dog-ear blind mounting system that can capture ceiling thicknesses from 0 to 2.75 in. The conduit cover plate shall be removable, retained by 2 (two) captive Phillips head screws. A C-Ring and tile rail shall be provided for secure mounting in a ceiling. The loudspeaker connections shall be a locking 4-pole Euro-block that accepts four 14 AWG wires.

The loudspeaker shall be listed as safe for use in air-handling spaces under UL1480A and UL2043. The loudspeaker shall meet or exceed IP-34 for ingress protection; it shall meet the IEC 60529 IP-X3 splash rating. The switchable transformer shall be listed under UL1876. The baffle shall meet UL94-V0 and UL94-5VB flammability ratings and shall comply with IEC60849/EN60849 safety standards.

The loudspeaker shall fit in a cutout of Ø 305 mm (Ø 12 in)

The loudspeaker's enclosure shall be 13.8 in (33 cm) high and 11.8 in (30 cm) in diameter. The loudspeaker shall weigh no more than 23.7 lb (10.75 kg).

The ceiling mount 2-way co-axial system shall be the QSC AD-C8T-ZB.