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.

Possible Speaker/Amplifier Product Groups

Front Speakers

Tweeters

Rear Speakers

Mid Range Speakers

Subwoofers

Subwoofers

Figure 11. Some suggestions for group arrangements.

Sixteen unique speaker groups are possible.

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.

Figure 11. Model 932

932

932

Figure 12. Model 940EZ.

Speaker Selectors. This

This module could switch

 

 

configuration could switch

 

 

four speaker pairs, but does

eight speaker pairs.

 

 

not have the AutoDamping

 

 

 

Circuit.

940

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Audio Authority Car Audio System installation manual Ampifier Bypass, Speakers