Bose FreeSpace 8 Manuale dell'installatore - Pagina 18
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Appendix B: FreeSpace
B.1
Acoustic specifications
Sensitivity: 4 ohm – 87dB 1W 1m, maximum 102dB 32W 1m
Sound pressure level (SPL) sensitivity is measured as follows:
• Full bandwidth pink noise is applied directly to a low output
impedance amplifier with the output limited to the wattage specified.
Sensitivity: 70/100 Volt – 88dB 1W 1m, maximum 102dB 32W 1m
Sound pressure level (SPL) sensitivity is measured in an anechoic
chamber as follows:
• Full bandwidth pink noise is applied through a Model 32 equalizer
and fed into a power amplifier.
FreeSpace Model 32 Loudspeaker
Wattage tap
1 Watt
SPL at 1 meter
at wattage
87dBA
input indicated
When the operational bandwidth is limited to speech (paging) applications,
sensitivity is increased by 1dB at each tap setting.
Impedance: 156 (70.7V), 31 (100V) @ 32W
Power handling: 32W maximum
Bandwidth: 80Hz – 16kHz
Beamwidth: 104 at -3dB, 132 at -6dB
B.2
Mechanical specifications
Dimensions: 10.87" x 11.75" x 7.45"
Weight: 4 – 5.13 lb (2.33 kg) installed
70V & 100V – 5.77 lb (2.62 kg) installed
Finish:
Front baffle – Arctic white polymer
Rear enclosure – aluminum, painted black
Grilles – vandal resistant, expanded metal mesh
18
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Model 32 Loudspeaker Specifications
2 Watt
4 Watt
8 Watt
90dBA
93dBA
96dBA
AM177915_03_V.pdf • May 6, 2002
16 Watt
32 Watt
99dBA
102dBA