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Example #3 –Gentle Rake with Balcony
Description – This example is also common for performance spaces and auditoriums. Shown are the CBT
100LA, CBT 70J and the CBT 70J+70JE combination. All are set at the Broad Vertical Coverage setting.
Listening Planes = Main: Rise of 0.6 m (2 ft) in 9.1 m (30 ft) of depth, beginning 1.2 m (4 ft) above the floor.
Balcony: Rise of 1.5 m (5 ft) in 7.6 m (25 ft) of depth, beginning 4.6 m (15 ft) above the original floor.
Mic Placement = 6.1 m (20 ft, red icon) and 11.6 m (38 ft, blue icon) on main seating; 10.7 m (35 ft, green
icon) and 16.8 m (55 ft, pink icon) on balcony.
CBT 100LA in Broad Setting
Trim Height = 4.3 m (14 ft,
Down Tilt = 0°
Vertical Coverage Setting = Broad
SPL
(Full rated power, low-Z, SPEECH setting, 4 kHz, scale in feet)
30
25
20
15
10
5
0
0
10
Frequency Response
Top of Speaker)
20
30
(Full rated power, low-Z, speech setting, mic positions as designated above)
:
40
50
CBT Quick Start Guide 14
105
100
95
90
85
80
75
60
70
4 kHz
:
SPL Range
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