Quick start guide for sound system designers jbl cbt series constant beamwidth technology™ column loudspeakers (note: some models shown with the included grilles removed to illustrate driver composition.) rev a3.
Cbt quick start guide 2 contents introduction .................................................................................................................... 3 • understanding the charts o spl maps o frequency response charts • room sizes shown example #1 – flat listening plane cbt 50la ..........
Cbt quick start guide 3 excellent coverage of a wide variety of room types can be accomplished using jbl’s cbt line array column loudspeakers. This guide shows some starting-point examples of placement, aiming and resulting performance of the various cbt models in a variety of simplified sectional-v...
Cbt quick start guide 4 example #1 -- flat listening plane description -- this is the most basic of rooms. All four cbt models are shown, as well as both “broad” and “narrow” vertical coverage settings for those models that have the switchable coverage capability (cbt 100la & 70j) listening plane = ...
Cbt quick start guide 5 example #1 -- flat listening plane cbt 100la in broad setting trim height = 4.9 m (16 ft , top of speaker) down tilt = 15° vertical coverage setting = broad spl (full rated power, low-z, speech setting, 4 khz, scale in feet) : 0 5 10 15 20 25 30 0 10 20 30 40 50 60 70 105 100...
Cbt quick start guide 6 example #1 -- flat listening plane cbt 100la in narrow setting trim height = 3.4 m (11 ft, top of speaker) down tilt = 10° vertical coverage setting = narrow spl (full rated power, low-z, speech setting, 4 khz, scale in feet) : 0 5 10 15 20 25 30 0 10 20 30 40 50 60 70 105 10...
Cbt quick start guide 7 example #1 -- flat listening plane cbt 70j in broad setting trim height = 4 m (13 ft , top of speaker) down tilt = 5° vertical coverage setting = broad spl (full rated power, low-z, speech setting, 4 khz, scale in feet) : 0 5 10 15 20 25 30 0 10 20 30 40 50 60 70 105 100 95 9...
Cbt quick start guide 8 example #1 -- flat listening plane cbt 70j in narrow setting trim height = 3.7 m (12 ft, top of speaker) down tilt = 5° vertical coverage setting = narrow spl (full rated power, low-z, speech setting, 4 khz, scale in feet) : 0 5 10 15 20 25 30 0 10 20 30 40 50 60 70 105 100 9...
Cbt quick start guide 9 example #1 -- flat listening plane cbt 70j+70je in broad setting trim height = 5.5 m (18 ft, top of speaker) down tilt = 10° vertical coverage setting = broad spl (full rated power, low-z, speech setting, 4 khz, scale in feet) : 0 5 10 15 20 25 30 0 10 20 30 40 50 60 70 105 1...
Cbt quick start guide 10 example #1 -- flat listening plane cbt 70j+70je in narrow setting trim height = 3.7 m (12 ft, top of speaker) down tilt = 5° vertical coverage setting = narrow spl (full rated power, low-z, speech setting, 4 khz, scale in feet) : 0 5 10 15 20 25 30 0 10 20 30 40 50 60 70 105...
Cbt quick start guide 21 how far each cbt model “throws” – speaker “throw” has many possible definitions, some of which require knowledge of venue-specific factors, such as acoustics, seating plane particulars, or spl differences between one listening location and another. One speaker-specific defin...
