Audio Authority Access EZ 922, System Installation Manual

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11
List the Switching Modules
Figure 15 shows the modules needed to switch each type of product in this example display. Each electronics
module supports four products, and each speaker module supports eight speakers. To switch eight speaker
pairs , use one 932 module for the right, and one for the left. The Access System’s architecture was designed for
up to sixteen unique speaker groups, with a capacity within each group for 99 pairs of speakers.
Put the System Together
The only other essential module is the Model 980 “System Module” which controls certain functions of the Access System.
A 980 System Module is shown installed in the signal path between the Source Group and the Receiver Group. By
connecting the modules with bus cables ( see page 18 for instructions ) you now have a working switching system.
How to Add Product Capacity
Simply add enough modules to accommodate the number of additional products you plan to demonstrate.
Instead of eight sources and eight pairs of stereo speakers, the example in Figure 16 can switch twelve sources
and sixteen pairs of speakers. If you plan to use a 903 Control Panel, you can demonstrate up to 99 products in
each of eight Product Groups
Bass Modules with Satellite Speakers
Multi-speaker packages or “bass module” packages are referred to here as un-powered sets of speakers which
are switched essentially the same as pairs of conventional speakers. They belong in the same Product Group as
the other full range stereo speakers. A bass module with a pair of satellite speakers would be connected to the
932 switching modules on each side, and the satellite speakers would be connected to their bass module.
932 932
942
922 922
942
8 Sources 8 Receivers 8 Pair Speakers
932 932
942
922 922
942
980
System Bus
Low-Level
Speaker-Level
8 Sources 8 Receivers
8 Left
Speakers
System
Module
8 Right
Speakers
932 932
942
922 922
942
980
922
932 932
System Bus
Low-Level
Speaker-Level
12 Sources 8 Receivers
16 Left
Speakers
System
Module
16 Right
Speakers
Figure 15. Switching modules needed for this example stereo switching system. For high power amplifiers, you may wish to substitute 949X and
939 modules for receiver group.
Figure 16. Typical small stereo switching system.
Figure 17. Expanded stereo switching system. 903 Control Panel connects to the 980 System Control module.