JBL Professional JBL Control 47C/T Coaxial in-ceiling loudspeaker with conical RBI waveguide

The Control 47C/T uses JBL's conical RBI waveguide to hold a 120-degree pattern across the band, which means fewer speakers to cover a given floor area - the reason it shows up in casinos and large retail floors rather than a plain cone-and-dome ceiling can.

A 165 mm woofer and a 25 mm compression driver give 91 dB sensitivity and 110 dB maximum in low impedance, reaching 55 Hz. It runs at 8 ohms in bypass or off a 70/100 V line with 60, 30 and 15 W taps. A formed steel blind-mount backcan is included for plenum use. Ceiling cutout is 282 mm; C-rings, tile rails, a paint shield, a cutout template and the grille are in the box.

Type	Coaxial in-ceiling loudspeaker with conical RBI waveguide
Impedance	8 ohms (in bypass mode)
Power rating	150 W continuous program; 75 W continuous pink noise (low-Z direct)
Maximum SPL (1 m)	110 dB low impedance (116 dB peak); 109 dB on top 70/100 V tap
Sensitivity	91 dB (1 kHz - 16 kHz)
Frequency range	55 Hz - 20 kHz
Coverage angle	120 degrees conical, constant directivity
Transformer taps	60 W, 30 W, 15 W (7.5 W at 70 V only)
Drivers	165 mm (6.5-inch) LF; 25 mm (1-inch) HF compression driver
Backcan	Formed steel blind-mount, included
Plenum use	Yes, backcan included; UL1480 / UL2043
Ceiling cutout	282 mm (11.1 in) diameter
Dimensions (diameter x depth)	305 x 259 mm (12.0 x 10.2 in)
Included accessories	C-rings, tile rails, paint shield, cutout template, grille