Bose ShowMatch SM20 Panduan Penggunaan dan Aplikasi - Halaman 17
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ShowMatch Module Presets
ShowMatch module presets are optimized for specific applications and are named accordingly. Preset choice is based
on the high pass selection for the module.
Preset name
HF / LF
Example
Front Fill
150 Hz HPF
SMx_100
Front Fill
150 Hz HPF
SM20_120
ShowMatch Subwoofer Presets
ShowMatch subwoofer presets are named according to their application and allow the creation of custom cardioid
configurations, or pre-configured cardiod arrays.
Preset name
HF / LF
Example
65 Hz LPF
SMS118
90 Hz LPF
65 Hz LPF
SMS118
Cardioid Element
90 Hz LPF
65 Hz LPF
SMS118 x2
Cardioid Stack
90 Hz LPF
65 Hz LPF
SMS118 x
Cardioid Stack
90 Hz LPF
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Notes
For use with SM5|10|20 when deployed as a front fill.
For use with SM20x120 when deployed as a front fill
Notes
SMS118 – (2 per channel)
SMS118 used as cardioid cancellation unit within a
gradient cardioid subwoofer array.
Two SMS118 modules stacked in to deliver gradient
cardioid performance.
Requires two amplifier channels
FR – Front Firing SMS118
BA – Rear Firing SMS118
Three SMS118 modules stacked in to deliver gradient
cardioid performance.
Requires two amplifier channels
FR – Front Firing SMS118
BA – Rear Firing SMS118
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ShowMatch Cardioid Subwoofer Presets
The cardioid presets provided employ the gradient cardioid method to achieve the maximum amount of rejection
behind the array within the array's passband. The standard and cardioid presets can be used as building blocks to
create a variety of array configurations and coverage patterns. The following are few of the most common applications.
2 Module Cardioid Ground Stack
Side Stage Block Array
dB SPL
Horizontal coverage (plan)
dB SPL
Horizontal coverage (plan)
122
128
120
126
118
124
116
122
114
120
112
118
110
116
108
114
106
112
104
110
<103
<109
Preset Guide
Array
Ground Stack
SMS118
SMS118 x2
Sub
SMS118
Cardioid Stack
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Vertical Column Flown
dB SPL
Vertical coverage (elevation)
125
123
121
119
117
115
113
111
109
107
<106
Preset Guide
Preset Guide
(Front)
SMS118
(Front)
Cardioid Element
Cardioid Element
SMS118
(Back)
(Back)
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