JBL CBT 70J-1 Column Installation Speaker - White Reviews
The JBL CBT 70J-1 passive line array column speaker uses JBL's breakthrough Constant Beamwidth Technology to produce a column speaker with incredibly balanced projection across a large area. Passive column speakers normally create inconsistencies in sound when you move about the room, but not the CBT 70J-1! JBL's patent-pending "J" design uses an array of four 5" LF drivers and sixteen 1" HF drivers, and the result is consistent, natural sound coverage — both horizontally and vertically. You can even tailor the vertical dispersion to optimize the sound to any room! Perfect for large rooms like churches, school auditoriums, and theaters, the CBT 70J-1 is easy to install as well as easy to optimize for your room.
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Highest Rated Reviews
Surprisingly full
Two of these fill the worship center at my church that holds about 300 people. It is an old fashioned building with a very tall ceiling, so I mounted them low. For the size and price, they fill the space incredibly well. Very clear audio, very easy to install.
Best option for price and quality
Using these speakers as a L & R setup in a church seating 600 people. Replaced 6 directional speaker center cluster. Reduced the amount of reverb in the room. Allowed for a better mix in the house and reduced the number of individuals needing to use the hearing loop as well as the hearing assistant. Most of the time we have folks coming in asking where the speakers are because the are so inconspicuous. Everyone is so amazed by how the entire sanctuary evenly fills with sound.
CBT works better than expected!
Installed a pair of these in our sanctuary and everyone is delighted with the result. We're getting good stereo imaging even near the edges of the sanctuary and about 1.5db falloff front row to back wall. I am using them with a subwoofer so they get a lo-cut version of the mix. The spectrum analyzer shows them to be flat response throughout the room with the music setting on the enclosure. Great intelligibility for the sermon as well as vocals during music. Because of their wide horizontal beam width and their positions at the extreme left and right of the room, I am aiming them at nearly a 45 degree angle into the room which is providing excellent even coverage. Great technology!
JBL CBT 70J-1
Work great, using for rear channel on a 400 watt per channel Carver amp. On 5 channel they are loud at high volume, but don't boom in a particular direction, in other words the sound is more evenly distributed.
Great sound quality.
Installed two of these in a 350 seat sanctuary. Fills the house with great sound. Speech is clear and music is crisp.
CBT 70J-1 + 70JE-1
they are not meant to mount on a side wall to replace existing column speakers on each side of a long room. They don't say you can do that but they don't say you can't in anything i found. The speakers have an approximate 135 to 150 degree horizontal beam width. If you mount them on a side wall facing to the rear of a 85 foot long room, intelligibility is gone at about 45 feet unless you make them so bright they sound terrible. 1/3 or more of the horizontal beam bounces off of the adjoining wall and destroys the carefully crafted vertical beam. If you put them 10 feet from the wall the sound if fine to 85 feet. Don't use these to directly replace wall mounted columns in the front of the room. They work better but not optimally. K arrays are slightly better against the wall but constraining an interference pattern device by ruining its interference pattern with first reflections 12 inches away is not good. The need space on each side
