Matching Products JBL Control 321CCeiling loudspeaker with 12"/1" equipment, coaxial, 250 Watt, 94 dB SPL and 90° dispersion angle for installation in ceilings above 5 m height. JBL Control 322CCeiling loudspeaker with 12"/1" equipment, coaxial, 400 Watt, 95 dB SPL and 90° dispersion angle for installation in ceilings above 5 m height. JBL Control 328CCeiling loudspeaker with 8"/1" placement, coaxial, 250 watts, 93 dB SPL and 100° dispersion angle for installation in ceilings over 5 m high.