Using Auditioner
®
Playback System III
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Auditioner
®
Playback System III User Guide
Note:
The Sound Pressure Level meter in the Bose
®
Modeler
®
Plus software always shows
the average Sound Pressure Level that would be measured with a bare microphone at the
active listener position in the absence of any background noise.
Auditioner playback system can mix together 2 additional analog sound sources into the
playback audio (using the RCA line-in and the 3.5 mm stereo line-in). This is useful for
situations such as adding in background noise in addition to the program material. When you
mix in additional sources, the Sound Pressure Level meter on the Auditioner playback system
will display the combined sound pressure level of the source material plus the additional
analog sources. Please note that the Sound Pressure Level meter in the Bose
®
Modeler
®
Plus
software only displays the level of the source material. It will not take into account the
additional analog sources that are input into the Auditioner playback system. In summary:
Follow these steps to monitor the Sound Pressure Level using Auditioner playback system.
1.
Connect Auditioner playback system to a Windows XP PC running Bose
®
Modeler
®
Plus
software, or connect Auditioner playback system to an external audio device.
See “Con-
necting Auditioner® Playback System III to a PC” on page 10 or “Connecting an audio
device to Auditioner® Playback System III” on page 12
.
2.
With an audio source selected, choose a particular listener location in the Bose
®
Mod-
eler
®
Plus software and play the sound system simulation.
3.
Monitor the Sound Pressure Levels on the Auditioner playback system and adjust the
source level in the Bose
®
Modeler
®
Plus software.
See Table 1 on page 14 for the correlation between the LED display and actual Sound
Pressure Level values. The Sound Pressure Level values represent an averaged level over a
100 ms time constant. Each LED lights and stays lit when the average sound has exceeded
its dB SPL value.
For example, the first yellow LED lights when the average Sound Pressure Level exceeds 85
dB SPL over a 100 ms time constant. This LED (and all green LEDs below it) is lit while the
average Sound Pressure Level is below 90 dB SPL. When the average Sound Pressure Level
exceeds 90 dB SPL the second yellow LED will become lit (and all the green and one yellow
LED are lit).
If you have:
Bose
®
Modeler
®
Plus software SPL
meter will display:
Auditioner
®
Playback Sys-
tem III SPL meter will dis-
play:
Program material play-
back with an absence
of background noise
SPL level that would
be measured with a
bare microphone at
listener position
SPL level at listener position
plus a small variation due to
the Playback E
Q
Program material play-
back with additional
background noise
sources
SPL level that would
be measured with a
bare microphone at
listener position
Higher SPL level than at lis-
tener position (SPL level at
listener position plus Play-
back E
Q
, plus background
noise level)
Auditioner
®
Playback System III Overview
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Auditioner
®
Playback System III User Guide
Auditioner
®
Playback System III Overview
Auditioner
®
Playback System III contents
Figure 2
Auditioner
®
Playback Sys-
tem III box contents
The Auditioner playback system box contains the following items. If any items are missing,
contact Bose:
• Carrying Case
• Auditioner playback system unit
• User Guide
• Cables
• U.S. Line cord (Purchase a local power cord if outside North America)
• 10 ft. USB male A-B cable
• 6 ft. Stereo 3.5mm to 3.5mm stereo cable (for CD line-in jack)
• 6 ft. Stereo RCA to RCA cable (for analog input)
WARNING:
Never pick up the Auditioner playback system by the high frequency or low fre-
quency loudspeakers. Auditioner playback system should only be picked up by the handle, or
with both hands on the two outer arms that connect the base to the loudspeakers.
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