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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

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