Bose FreeSpace 8 Manuale dell'installatore - Pagina 14
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Appendix B: Safety Requirements
B.1 Safety agency listings
B.1.1 UL
®
®
The Bose
FreeSpace
system controller (Model 8/32) is UL listed:
• Commercial audio equipment - UL 813
• Fire protective signaling - UL 1711 Control number 42S9, File number E63079
B.1.2 Other agencies
The controller is also listed with the following safety agencies:
• TÜV Rheinland
• CSA
• Dentori
B.2 Fire protective signaling
B.2.1 Signal processing equipment
Bose offers 70V fire safety models of both FreeSpace Model 8 and Model 32 loudspeak-
ers listed under UL 1480, category UUMW, as fire protective signaling devices. The Bose
FreeSpace system controller (Model 8/32) is the only equalizer listed for use with these
loudspeakers in fire protective signaling and warning systems. These loudspeakers will
not perform as specified for this application if used with another controller.
B.2.2 Gain adjustment
In order to achieve the UL listed SPL output of the FreeSpace Model 8 and Model 32
loudspeakers when used as a fire protective signaling and warning system, the warning
signal must be bandwidth limited to approximately the range of 400Hz – 4kHz. This signal
should be tested to confirm that a full 70 Volt signal is achieved at the amplifier output.
This signal must be directed through the system controller, with the input signal to the
controller properly adjusted to achieve the amplifier output specified.
14
AM177675-2_04_V.pdf • May 7, 2002
Warning
Do not use this gain adjustment
for full bandwidth audio material
or speech. Amplifier and/or
loudspeaker distortion may
result.