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Appendix A: FreeSpace

A.1

Acoustic specifications

Sensitivity: 70V & 100V – 81dB 1W 1m, maximum 90dB 8W 1m

Sound pressure level (SPL) sensitivity is measured in an anechoic

chamber as follows:

• Full bandwidth pink noise is applied through a Model 8 equalizer

and fed into a power amplifier.

FreeSpace Model 8

Wattage tap

SPL at 1 meter at wattage input indicated

When the operational bandwidth is limited to speech (paging) applications,

sensitivity is increased by 1dB at each tap setting.

Impedance: 625 (70.7V),

1250 (100V) @ 8W

Power handling: 8W maximum

Bandwidth: 80Hz – 16kHz

Beamwidth: 121 at -3dB,

150 at -6dB

A.2

Mechanical

specifications

Dimensions: 10.42" x 10.87" x 6.02"

Weight: 70V & 100V – 4.2 lb (1.9 kg)

installed

Finish:

Front baffle – Arctic white polymer

Rear enclosure – aluminum,

painted black

Grille – vandal resistant,

expanded metal mesh

1 Watt

81dBA

10.87"

276.1 mm

.77"

19.6 mm

6.02"

152.9 mm

Minus "T"

AM177915_03_V.pdf • May 6, 2002

Model 8 Loudspeaker Specifications

2 Watt

4 Watt

84dBA

87dBA

10.42"

264.67 mm

5.60"

142.2 mm

6.27"

159.3 mm

8 Watt

90dBA

Figure 25