Audio Authority Car Audio System installation manual Setting the Parallel Speaker Limits

Page 25

Here are the three different Power Modes:

Power Conserve allows only one component from each electronic group to be ON at any given time. New selections have a turn-on delay of either 3/4 seconds or 3 seconds, depending on how the T switch is set on each main module.

Smart Power Mode allows up to three components in each electronic product group to be on at any given time. When a fourth component in the group is selected, the first selected component in the group powers down, and so on. If there is no new selection activity in the group within 5 minutes, all components in the group power down; then, a new selection cycle begins. There is a turn-on delay for each new selection (no delay for the products recently selected); the length of the delay is determined by the T switch setting on the selected component’s main module.

Continuous Power Mode allows all electronic components in the display to be ON and ready for immediate selection with no delay. Since all components are ON it is extremely important to have an adequate source for DC power, for car applications, like the Audio Authority® Model 2/77 HybridDC Power Source. (In very large displays two 2/77s may be required if Continuous Power Mode is used.) Choose either the Continuous Mode or the Smart Power Mode if you desire instant A/B or A/B/C comparison of components in your display.

Set the 980’s “Power Mode” switch and each main module’s “D” and “T” switch .

Mode

Effect on

Power Mode

Delay or “D” Switch

 

Product Groups

Switch on 980

on Main Modules

 

 

 

 

Power Conserve

1 unit ON;

ON

ON

 

delayed turn-on

 

 

Smart Power

Up to 3 units ON;

OFF

ON

 

delayed turn-on

 

 

Continuous Power

All units ON;

OFF

OFF

 

no turn-on delay

 

 

 

 

 

 

Remember, T set to OFF = 3/4 second delay for head units, processors or small amps (Models 910, 958) T set to ON = 3 second turn-on delay for large power amps (Model 942).

G. Setting the Parallel Speaker Limits.

The AccessSystem can be programmed to allow multiple pairs of speakers to play in each Speaker Group at one time from the same amplifier.

When the system is programmed to allow this, you should consider the possible effects on your amplifiers. For example, when 2 pairs of speakers play in parallel in the same group, the load presented to the amplifier is increased in exactly the same manner as connecting the two pairs of speakers directly to the amp’s output. The amp now “sees” a lower impedance or higher load and works a little harder, by playing a little louder. If you were to choose two pairs of speakers, both at 4 ohms, connected in parallel, the two pairs would present a 2 ohm load to the amp. If three pairs of 4 ohm speakers were selected, the load impedance could be 1.7 ohms or lower.

Many amps are stable down to a 2 ohm load, however, many are not. We recommend that the programming switches be left at the factory default setting which allows two pairs of speakers in each speaker group to be played simultaneously. Playing 2 pairs of front speakers, 2 pairs of rears, and a pair of subs is a very power- ful demonstration.

25

Image 25
Contents Demonstration Network Car Audio Page Contents Introduction Definition of Terms What is the Access System?Product Select Selecting Products in the Access System HOW the Access System WorksBuses 922Access User Interfaces Access System ComponentsControl Panels Full-Featured Control Panel Features includeSwitching Modules Expander Modules System ModuleSystem Specific Components DC Distribution Modules Product Groups Choosing the Correct Switching ModulesHead Units 910Amp Sharing Amplifier Product GroupsSpeakers Ampifier BypassAddress and Other Settings Begin InstallationPreparation Number the Product GroupsDetermine the Module ID settings How to Use These TablesSources, EQs and Amplifiers Speakers Set the Programming Switches Set the Address SwitchesProgramming Switch Settings S M B T D Timeout Minutes and Model Set the Left-Right SwitchSilenTouch and Model Speaker LimitDesignate the Switching Module Locations Installing the System HardwareDetermine Other Module Locations Mount the ModulesBlue Low-Level Buses Install Speaker BusLow-Level Bus Illustration.Low-Level EQ and Amplifier BypassInstall the DC Power Distribution Cables Power Supply Ventilation Choosing the Power Mode for Your DisplaySetting the Parallel Speaker Limits Check Your Work to This Point Install the RF Antenna Distribution SystemObserve correct polarity for all bus connections Rear view of the 902 Control Panel Installing a Control PanelControl Panel Cutout Sizes Control Panel ExpandersBe careful to maintain PSB Cable polarity at both ends Installing Product Select Buttons and Product IndicatorsRemote Power Switch System Module AccessoriesTheftAlert Remote System Reset Testing Network Function902 Page Display Component Hookup Install the First ProductsPage Test Your Initial Product Installation Install the Remaining Products Connect the BatteryTroubleshooting Noise Problems Test Product SelectionDeselecting Products with PSBs Selecting Additional Speaker Pairs with PSBsB System Comparison TheftAlert ProtectionProduct to Switch Module Wiring Diagrams System, DC and Signal Bus Wiring DiagramsAddressing Low-Level Bus Example SystemSystem Bus Speaker Bus DC Bus Amplifier Bypass Addressing System BusAmp Bypass EQ Bypass AMP Shared System 942 916X 932 Ch. High-Level 2-Ch Low-Level Head Unit Example of split Model 910D SetupPower Expander Channel Signal Processor Or Equalizer915X DC EQ Bypass NoteModel 980 System Module / 2- and 6-Channel Hookup Channel Setup for 980EZChannel Amplifier Amplifiers / 2-Channel Hookup916X Amp Bypass NoteBAT+ Amplifiers / 4-Channel Hookup942 Shared Amplifier HookupLeft Speaker Right Left/Right and Mono Speaker HookupLimited Warranty Access WarrantyWarranty Service Procedures Out of Warranty ServiceIndex