THX approves JBL column loudspeaker and extension box


Harman’s JBL Professional announced that its CBT 70J-1 column loudspeaker and CBT 70JE-1 extension box are now THX-approved. This enables exhibitors to include CBT 70J-1 loudspeakers in their THX-certified theatres.

The CBT 70J-1 is a high-power, two-way line-array system consisting of 16 high-frequency drivers and four high-power low-frequency drivers, all in a fully coaxial column loudspeaker, featuring JBL's patented CBT Constant Beamwidth beam control circuitry. The vertical coverage of the loudspeaker is asymmetrical, sending more sound toward the far seats of the auditorium than the near seats. When used as surround speakers, they provides a much wider "sweet spot" where the audience hears a similar amount of both left and right surround speakers.