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932 932
940
Figure 11. Model 932
Speaker Selectors. This
configuration could switch
eight speaker pairs.
Figure 12. Model 940EZ.
This module could switch
four speaker pairs, but does
not have the
AutoDamping
Circuit.
Front Speakers Tweeters
Rear Speakers Mid Range Speakers
Subwoofers Subwoofers
Figure 11. Some suggestions for group arrangements.
Sixteen unique speaker groups are possible.
Possible Speaker/Amplifier Product Groups
Ampifier Bypass
The source signal is supplied when no products in an amp group are selected. For the bypass option, remem-
ber to leave the fourth position open on the last 942 module in each Amp Product Group. That position is
reserved for the bypass connection, so no amp can be connected there (see pp. 6, 40).
There are many other hookup and demonstration possibilities for amplifiers, many of which are shown in this
manual. Please call us at 800-322-8346 if you have questions about the type of switching modules you need,
or with any other questions.
Speakers
The final component(s) in the signal path are the speakers.
Each speaker Product Group is powered by the selected
amplifier in its corresponding group. So, front type
speakers are powered by front amps, rear type speakers by
rear amps, etc. The Access System’s architecture was
designed for a maximum of 16 unique speaker groups,
with a capacity within each group for 99 pairs of speakers.
Speakers use the special 932 switching module. Each 932 switches eight speakers in one channel (8 left or 8
right speakers) so two Model 932s are required for each eight pairs of speakers. The 932’s AutoDamping™
circuit shorts unselected speakers to ground so that they do not resonate sympathetically with the selected
speaker pair.
In very small systems, it could be more cost effective to use the Model 940EZ high-level switching module for
speakers. Each 940EZ module handles 4 pairs of speakers. Unselected speakers are NOT shorted to ground
(AutoDamping) when the 940EZ is used, but that usually isn’t an issue when there are only a few speaker pairs
in the system.