Audio Authority Car Audio System User Manual

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Demonstration Network

Car Audio

System Installation Manual

2048 Mercer Road, Lexington, Kentucky 40511-1071

Phone: [phone] • Fax: [phone]

Customer Toll-Free USA & Canada: 800-322-8346

Website: http://www.audioauthority.com

The Access™ Demonstration Network is protected by U.S. Patent numbers 5,422,631 and 5,646,602 with foreign patents pending.

Audio Authority, and the double-A symbol are registered trademarks of Audio Authority Corporation. Access, AccessEZ, AccessPC, SilenTouch, AutoDamping, AutoLimiting, AutoCal, and TheftAlert are trademarks of Audio Authority Corporation. The software imbedded within the Access™ System is not sold, but rather licensed for this product specific use. The original purchaser is licensed to use this software in this product and this application only. Under this license, the software may not be reproduced, copied, disassembled, distributed by any means, licensed, rented, sold, or in any way revealed to or used by a third party.

752-267 9/00

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Contents

Orientation

INTRODUCTION ..................................................................................	4
DEFINITION OF TERMS ......................................................................	5
HOW THE ACCESS™ SYSTEM WORKS .............................................	7
ACCESS SYSTEM COMPONENTS ....................................................	8

Planning

CHOOSING THE CORRECT SWITCHING MODULES .....................	12
HEAD UNITS ......................................................................................	12
PROCESSORS, EQUALIZERS AND BYPASS ..................................	12
AMPLIFIERS AND AMP SHARING....................................................	13
AMPLIFIER BYPASS ..........................................................................	14
SPEAKERS ........................................................................................	14

Installation

PREPARATION ...................................................................................	15
ADDRESSING ....................................................................................	15
INSTALL THE SYSTEM HARDWARE ................................................	19
INSTALL THE BUS CABLES ..............................................................	20
CHECK YOUR WORK TO THIS POINT ..............................................	26
INSTALLING A CONTROL PANEL ....................................................	28
CONNECT ACCESSORIES TO THE 980 SYSTEM MODULE ..........	31
TESTING NETWORK FUNCTION .....................................................	32
COMPONENT HOOKUP ....................................................................	34
DEMONSTRATION FEATURES .........................................................	38

Reference

APPENDIX A: SAMPLE SYSTEMS...................................................	40
APPENDIX B: PRODUCT CONNECTION DIAGRAMS .....................	45
ACCESS WARRANTY........................................................................	52
INDEX .................................................................................................	53

3

Orientation

INTRODUCTION

The AccessEZ™ series of demonstration system modules provides a plug-in solution for car audio, hi-fi, and video switching systems in retail display environments. This second generation of the highly capable, indus- try-acclaimed Access™ System modules offers many new features and benefits:

•AccessEZ offers a compact module to fit each kind of product, compared with a patchwork of printed circuit boards.

•Modules are protected by attractive and rugged steel covers.

•Gold jacks and terminals are clearly and specifically labeled.

•Expansion, when needed, is done by directly “docking” modules.

•Simplified module addressing.

•New audio switching capabilities include Digital (coax) connections and Optical adapters for Toslink® inputs and outputs.

•Master volume controls offer level presets.

•Touchscreen and Graphical control panels invite user interaction.

•Single product group control panel for sub rooms, speaker displays, or any product category.

All these new AccessEZ features are added to the existing capabilities of the Access System which include:

•Your choice of button-per-product, central control panel/computer touchscreen, IR remote, or any combination of user interface.

•Sophisticated SilenTouch™ interval muting for quiet switching.

•Capacity for hundreds of products.

•Comprehensive control panels with automated demonstration features.

•Single button recall of up to 99 stored system configurations.

All of these features make it EZ to design the demonstration system that fits your specific merchandising needs. Your Account Manager and our Application Engineering staff can assist you in selecting and configuring the appropriate AccessEZ modules to build the ideal system for you.

This manual is provided as a framework to help you successfully install your Access System, test its operation, and then use the system to demonstrate and sell your merchandise. This manual covers the proper installation of the switching system hardware only (if your system includes a 902, 903, or 906 Control Panel, or AccessPC touchscreen interface, please refer to the separate User Guide provided with your control panel for operation instructions).

Please read and follow these instructions carefully. If you have any difficulties during the installation, don’t hesitate to call us for assistance! We are always pleased to receive customer calls. We’re open Monday through Friday from 8:30 AM until 5:00 PM, Eastern Time. Also check our website for diagrams and tips: http://www.audioauthority.com.

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What is the Access™ System?

The Access™ System consists of a variety of intelligent switching modules. These modules communicate with each other via the “system bus,” allowing you to construct the exact demonstration system configuration you desire from the sources, processors/equalizers, amplifiers, speakers, and subwoofers in your display. The switching modules are located near the actual products on display creating a “distributed switching network.” The products are connected to the modules rather than being wired to one central point. Selected product signals are then sent across the network through “buses” that interconnect the modules. A simplified view is shown below.

Figure 1.

CONTROL PANEL CABLE			SYSTEM BUS
Control
Panel
	Source		Amplifier	Left	Right
		System		Speaker	Speaker
	Switching		Switching
		Module		Switching	Switching
	Module		Module
				Module	Module
Remote
Control
Product
Select		LOW LEVEL BUS		SPEAKER BUS
Button

DEFINITION OF TERMS

To successfully install your new Access Demonstration Network, you should familiarize yourself with the following terms:

Address	A number that pinpoints the identity and location of a
	switch module within a system. The installer sets numeric
	switches like the ones in Figure 2 for each module which
	provides a unique address in the proper sequence for each
	component connected to the system.	Figure 2. This example shows an
AutoDamping™	When merchandising many pairs of different speakers in a	address setting of 0/00. Typically
		this would represent the first
	showroom, the drivers of the unselected speaker pairs	module (components 1 through 4)
	become passive radiators when the currently active	in the Source Product Group.
	speaker pair is playing, absorbing much of the sound
	coming from the speakers being played. AutoDamping™ is a circuit in the Model 932 that
	electrically disconnects (shorts) speakers not being played, thereby automatically damping
	them as passive radiators and improving sound quality in the showroom.
Bus	A Bus is a pathway for signals to travel from module to module; a cable connecting
	modules. There are three types of buses found in most AccessEZ Systems:

•System Bus A four wire harness (red, black, yellow, blue) connected to every AccessEZ module. The System Bus carries the signals that control the selection of the components and perform various housekeeping functions among the modules in the system.

•Speaker Bus (or High Level Bus) A four wire harness (green, white, brown, gray) that carries speaker-level signals from source and/or amplifier modules to speaker modules.

•Low-level Bus A signal bus using RCA patch cables to carry low-level audio signals between source modules and equalizer or amplifier modules.

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Bypass	A way to hear a system without a particular in-line component (EQ, Crossover, Amplifier,
	etc.). For example, when you wish to hear a system without the processor, the system can
	route the signal past the processor group and directly to the amplifiers. In this expample,
	Position #4 on the last module in the Processor Product Group is used as the bypass
	location. When this position is selected, or the Product Group is deselected, the audio
	signal continues through the bypassed group to the next Product Group. To activate
	bypass, turn ON the Bypass switch only on the last module in the group.
Control Panel	Control Panels, like the 902, 903, 906 or AccessPC Touchscreen, add central control and
	display capabilities to a system. Any control panel can operate hand-in-hand with prod-
	uct select buttons.
Module	A basic component of the AccessEZ™ System. There are five types of modules normally
	found in car audio applications:

•Switching Modules select and connect products for demonstration and communicate with other system components through the System Bus. Examples are Models 910D, 922, 932, 942 and 958.

•Expander Modules add channel capacity to switching modules. Examples are Models 920X and 940X.

•System Modules perform basic control, interface and housekeeping functions within the system. Examples include Models 980 and 988.

•DC Power Modules distribute DC power to sources, EQs, and amps. Examples include Models 915X and 916X.

•Signal Distribution Modules, such as the 985EZ and 975, distribute audio and/or video signals to output devices such as Video monitors.

Position	The numbered point of connection (1-4 for electronics, or 1-8 for speakers) of a product to
	a switching or expander module. The product select button (PSB) must be connected to
	the corresponding position on the module. For example, if a component is connected to
	position 3, its product select button must be connected to PSB position 3. When a “bypass”
	is required, always use the fourth position (see “bypass”). Control Panels select positions
	through the System Bus, and are not connected to individual positions.
Product Group	A group of functionally similar products, such as sources, amplifiers, subwoofers, etc.
	product group also refers to the windows to the right on 902/903 control panels.
Product Select	A push-button mounted at, or near the product location. Pushing this button selects the
Button (PSB)	product for demonstration and lights an LED to confirm the selection.
System	1. A network of switching modules interconnected by buses where a control panel and/or
	PSBs are employed to select and thereby interconnect specific components for demonstra-
	tion. 2. A configuration of audio products or components playing together which can be
	stored in control panel memory and A/B compared with other “systems.”
SilenTouch™	SilenTouch mutes the sound for a brief period during the switching process to eliminate
	transient noises while changing from one product to the next.
TheftAlert™	A special circuit that senses ground continuity of the products connected to the switching
	modules. If an alarm device is connected to the system, it will sound if a product is
	disconnected from the system without authorization. TheftAlert is an optional feature
	available through your Audio Authority® Account Manager. TheftAlert may also be added
	after your initial purchase. A special transformer is required for the feature to work and is
	provided per your request. You then will need to install it in the proper position on the
	switch modules.

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HOW THE ACCESS™ SYSTEM WORKS

When a product is selected for demonstration, signals are sent through a network of buses between switching modules to activate that particular product position.

Selecting Products in the Access System

Products can be selected in a system in different ways that can all be combined into a single system, if desired. You may select products in the following ways:

•By pressing a Product Select Button (PSB) connected to a switching module. This allows the user to build different systems of product configurations manually.

•By using a control panel, if the system is so equipped. Control panel use is covered in detail in a separate manual that accompanies each control panel.

•By issuing commands with the Model 905 IR Remote Control, which is included with the 902 Control Panel and available with the 903. One 905 remote is recommended per salesperson.

•By using a computer touchscreen with AccessPC or custom software configured to enable product selections and other control functions.

•A combination of these methods.

Buses

Signals are passed between modules by “buses,” which are nothing more than cables that go from module to module to module, connecting them into functional groups within the system’s architecture.

The System Bus connects all switching and system modules, allowing them to send messages to each other, controlled by the addresses that are set by the installer. These signals instruct the modules to select the inputs/outputs of a particular unit, such as a head unit or amplifier. Expander modules are not connected directly to the System Bus. Each expander receives its instruction from the main switch module to which it is attached.

Signal Buses carry audio signals, either low-level (source low-level output, for example) or high-level signals (amplifier output).

	System Bus
922	942	932	932
	980
		Left	Right

Low Level Bus (Source Bus/Amp In Bus)		Speaker Bus

Figure 3. Basic bus examples in a simple demonstration system.

7

ACCESS SYSTEM COMPONENTS

If you have already planned your system with the assistance of your account manager, you may wish to skip directly to the Installation section. If you do not have a complete plan for your system, get help from your Audio Authority® Account Manager by calling 800-322-8346.

Access™ User Interfaces

Control Panels

902 Full-Featured Control Panel

Includes one 987 Equal Volume Comparison (EVC) module, one microphone with 25’ cord, and one 905 IR Remote Control. Because the remote control serves such an essential function in a demonstration, one remote control is recommended for each sales person.

MODEL 902 FRONT PANEL

	ASD				HEAD UNITS
	å Demonstration Network
		Patents Pending
	1	2	3	A	EQ/PROCESSORS
	4	5	6	B	FRONT AMP
	7	8	9	C
					FRONT SPEAKERS
		0		SECURE
					REAR AMP
		SilenTouch ™		Theft Alert
	EQUAL VOLUME COMPARISON				REAR SPEAKERS
		ATTENUATION / SPL
	ON / SPL
					SUB AMP
	(STORE)			ATTEN.
		DECIBELS
	MUTE			LEVEL
					SUB SPEAKERS
	(ADJUST)	P-NOISE	AUTO-CAL
				Model 902 Control Panel

MODEL 903 FRONT PANEL

	ASD				HEAD UNITS
	å Demonstration Network
		Patents Pending
	1	2	3	A	EQ/PROCESSORS
	4	5	6	B	FRONT AMP
	7	8	9	C
					FRONT SPEAKERS
		0		SECURE
					REAR AMP
			SilenTouch ™	Theft Alert
					REAR SPEAKERS
					SUB AMP
					SUB SPEAKERS
				Model 903 Control Panel

Figure 4. The 903 performs all the functions of the 902 except EVC and SPL AutoLimiting™, and the IR remote is optional.

902 Features include:

•Displays selected products, even when they are selected using Product Select Buttons or by remote control. Displays diagnostic information for troubleshooting the system.

•Removable Product Group insert labels can be changed to indicate the functions of the LED displays. An extensive set of labels is included with the control panel.

•Amplifiers can be connected to more than one Product Group allowing one amplifier to be demonstrated independently as a front, rear, or sub amp (amp sharing).

•If not assigned as an active Product Group, the control panel’s last Product Group can store up to 99 pre-configured systems for immediate recall.

•Speakers with varying input sensitivities can be equalized to play at matched volumes by attenuating the output level of the source. AutoCal™ program can run automatically or calibration values can be directly written into the system’s memory.

•Optional TheftAlert™ circuit can be armed to sound an alarm should products on display be disconnected without authorization.

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•The control panel or any specific Product Group can be “locked out” from unauthorized user input.

•Auto SPL controls the maximum volume level of the currently selected system. The maximum is 120 dB.

903 Control Panel

Similar to the 902 Control Panel, but does not include the 987 EVC module, so Equal Volume Comparison and Auto SPL are not available. The 905 IR Remote will operate the 903 Control Panel but is not included, and must be purchased separately. All other functions of the 902 are inherent with the 903.

904 Product Group Expander for Control Panel

Adds eight additional Product Groups to your control panel. Up to 32 unique Product Groups can exist in an Access™ System.

904V Product Group Expander and Volume Control

Adds four additional product groups to your control panel and provides a master volume control.

905 IR Remote

Full function Infrared Remote Control for 902 and 903 Control Panels.

906 Control Panel

Perfect for single product group displays such as subwoofer rooms or speaker walls, the 906 Control Panel selects products using a rotary encoder knob, and displays the selected product number in the LCD window. Use the Select Previous button to make instantaneous comparisons between products.

988CP0 Volume Control Panel

Provides master volume for Access demonstration systems.

Product Select Buttons and Indicators

Various button styles, sizes and colors are available. All have integrated LEDs to indicate when the product is selected. Product indicators are simply LEDs mounted by each product showing which products are playing.

Switching Modules

910D Head Unit Selector

Controls outputs from 4 source units for 4-channel high-level, 2-channel low-level operation. Provides DC power connection for each source. Module can be split in two for greater placement flexibility using a Model 998 Extension Cable. Also features an expander port for adding additional channels.

922 Low-Level Selector

Controls a pair of 2-channel low-level signals routed to or from 4 low-level products such as low-level sources.

932 Speaker Selector

Accommodates 8 left OR 8 right speakers. Two 932s are required for 8 stereo pairs. Non-selected speakers are shorted to ground to reduce the sound absorption of unselected speakers in the display.

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940EZ High-Level Selector

Controls two channel high-level signals routed to or from four high-level products. Controls two channels of four products (e.g., high-level sources). Use Model 932 for applications where AutoDamping™ is desired.

942 2-Channel Amplifier Selector

Switches the low-level inputs and high-level outputs of four 2-channel amplifiers.

958 EQ or Crossover Selector

Controls low-level inputs and six channels of low-level outputs from four crossovers or equalizers.

System Module

980EZ

Provides the central point of control for DC power, SilenTouch™, 902/903 Control Panel, TheftAlert™ output, and so forth. The 980 is essential for any Access™ System and is typically installed in the low-level signal path just prior to any amplifier inputs.

Expander Modules

920X and Low-Level Expansion Module

The 920X adds a pair of low-level channels to any switching module.

940X High-Level Expander Module

Adds a pair of high-level channels to any switching module.

System Specific Components

970 RS232 Serial Interface/PC Interface

Connects the Access system to a PC for computer control (Touchscreen, etc.).

971 Infrared Control Module

Customized to send IR commands to infrared audio and video components.

977 Digital Audio Adapters

977R converts optical digital audio signals to coax, and 977T converts coax digital audio signals to optical.

975 FM Distribution Amplifier

12-volt powered FM antenna booster drives all the radio antenna inputs and has direct input for one or more RF output CD changers. Use with distribution components in Kit 16 or Kit 17. Kit 16 provides 4-way taps and cables for FM distribution to sixteen head units. Kit 17 contains one 4-way tap and cables for four head units.

9A80 Crossover

A simple crossover which can be hidden inside the fixture, allowing two-channel low-level signal from the headunit to be split for the demonstration of front speakers, rear speakers, and subwoofers.

981 DC Eliminator

Small, in-line, low-level device that eliminates DC that can be present in the low-level outputs of some head units and crossovers found on the market. One required per offending product.

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982A Low-Level Isolator

Small in-line, low-level device that eliminates ground loops inherent in car audio displays. One required per amplifier group (982A is not recommended with subwoofer groups).

983 Four-Channel AutoMatch Module

Device used to protect high-level in/out products on display that have different ground schemes. Device will protect products from harm when a floating ground source is selected to play with an amplifier. If needed, only one unit is required per display when demonstrating high-level head units in combination with power amps.

985EZ A/V Distribution Amplifier

Distributes component video signal to up to 8 video monitors.

987 EVC Audio Level Module

Adds 4 channels of Equal Volume Comparison and SPL AutoLimiting to the 902 Control Panel (one 987 is shipped with each 902).

990 External Infrared Receiver

Ceiling mount, omnidirectional IR Receiver used to extend the 905 Remote Transmitter’s range for greater line-of-sight distances with the 902 or 903.

993 Amp Sharing Adapter

Allows easy hookup for one amplifier to be selected for any of three positions (e.g., Front, Rear or Sub).

DC Distribution Modules

915X DC Power Adapter

DC expander Module that provides connections to DC power source for 4 Equalizers, Crossovers, or CD Changers. Includes resettable 10 amp circuit breaker. Use with Model 922 or Model 958.

916X DC Power Adapter

DC expander Module that provides connections to DC power source for 4 car audio amplifiers. Uses resettable 10 amp circuit breaker for ignition circuit and 40 amp resettable circuit breaker for circuit from battery terminals. Use with Model 942. The 916X also provides the DC connection points for 980EZ, 910D and 915X modules.

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Figure 5. Basic car audio signal flow for a system including Front, Rear and Sub amplifier and speaker Product Groups.

Rear Amps

Processor/EQs

Front Amps

Source Units

CHOOSING THE CORRECT SWITCHING MODULES

The Access™ System is very versatile and can be installed and wired in many different ways, including the wrong way. Your Account Manager can help you choose the modules that will best suit your needs. If at any time you wish to change your merchandising approach, Access can be rewired and additional modules can be installed to accommodate a different configuration.

Product Groups

Front Speakers

Rear Speakers

When planning the installation,	Sub Amps	Subwoofers
try to think of the components
you wish to display as belonging
to a particular family or GROUP, and where those components might
reside in the signal path, for a typical vehicle installation.
Head Units
The Model 910 is a good choice for almost every type of head unit, from
simple 2-channel powered tape/tuner units with only high-level
outputs, to CD/tuner units that have low-level outputs (preamp) for
rear channels and high-level outputs (speaker-level) for front channels.
Both of these varieties belong to the same source family or Product			910
Group and may be switched with the Model 910D (see Figure 6).		Figure 6. Basic Head
		Unit hookup with high

	Processors and Equalizers	and low-level plus DC
		power.

The next logical Product Group in the signal path may be Processor/ EQs/Crossovers. Generally, these devices have 2-channel (stereo) low-

level inputs that are processed through a dividing network to derive multiple output channels (e.g. 2 in x 6 out; see Figure 7). Products in this group are usually wired in the signal path just prior to the amplifier(s) input. Most of these processors have a wide range of adjustable controls that, when over-adjusted, can interject noise (distortion, hum, etc.) into the system. Check the gain setting controls, crossover frequency, and other control settings on your products often. Powered Equalizers would not be included in this Product Group. For the bypass option, remember to leave the fourth position open on the last 958 module in the Processor/EQ Product Group. That position is reserved for the bypass connection, so no processor or EQ can be connected (see pp. 6, 40).

DC Power

915X

Source In	958

Front Out

Rear Out

Sub Out

Figure 7. Basic Processor/EQ hookup for low-level inputs and outputs with DC power.

You may not wish to buy the extra switching modules to create a

separate Product Group for Processor/EQs, especially if you only carry one or two models of crossovers or passive EQs. However, if you want more than one amp to play at any given time, there should be at least one device (a crossover or processor) in the signal path that can accept a 2-channel low-level input from a source, and deliver front, rear and sub low-level outputs to amplifiers. Many retailers use a single dedicated crossover, buried inside the display, to derive multiple output signals for multiple amp inputs. This may be the simplest solution for your display (see Figure 8). Our Model 9A80 Crossover was designed just for this purpose. Call your Audio Authority Account Manager for details (800/322-8346).

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Sub

Amps

Head Unit Low-Level Bus

	Dedicated EQ
Low-Level	916X
Buses
980	942

Front

Amps

Amplifier Product Groups

The low-level outputs of products in the Processor/EQ/Crossover group are connected to the next logical component in the signal path, the Amplifier Product Group. Generally, amplifiers come in two different varieties; those that have low-level and high-level inputs and those that only have high-level inputs, normally called “boosters.” These two types of amps require different switching modules and belong in different Product Groups. If there are no booster-amps in your display, then you probably want to divide the amplifiers you wish to display into Front-channel amps, Rear-channel amps, and Subwoofer amps (see example in Figure 8).

Many of today’s amps have multiple inputs and outputs such as 4-channel amplifiers with Front Left/Right-INs/OUTs and Rear Left/Right-INs/OUTs. There are 6-channel amplifiers, most with their own internal crossovers, and amplifiers that can be specially configured, depending on how you hook them up (e.g. Front L/R Stereo IN/OUT, Rear bridged in mono for Subs).

916X

942

Rear

Amps

916X

942

	When planning for demonstrating these
	multichannel amps, you will need to	Front	Sub
	support each L/R input to the amp, and	916X	916X
	each L/R output from the amp.		PSBs
		942	Front/Sub
	So, a 4-channel amp could be used as		942
	shown in Figure 9. The Front L/R Input		Input
	signal would come from the Processor/EQ
	Product Group to the Front amplifier
	Product Group’s Model 942 Amplifier
	Selector through the Front Low-Level Bus.
	The amplifier in position #1 receives the
	front input L/R signal through the 942 Amp
	Module and sends its front output L/R		Output
	signal back through the 942 in the Front
		Figure 9. 4-channel amplifier switching
	Amp Product Group. The Sub input signal
		(Front/Rear or Front/Sub).
	in this example passes through position #1
	on the 942 Amp Selector for the Sub Amp
	Product Group. The High-Level Bus
	then passes the signals on to the Front	916X
	and Sub speaker groups.

Figure 8. Dedicated EQ and Front/	Amp Sharing	942
	It is sometimes desirable to have 2-
Rear/Sub Amp Groups.
	channel or 4-channel amplifiers
	available to play in more than one	Front

Product Group. For example, you may wish to show the same amplifier driving a Front, Rear, or Sub speaker group. This method of demonstration lowers your display inventory investment and conserves space.

The Access™ System allows the user to share an amp in different Product Groups. To achieve “Amp Sharing”, one must use a Model 942 for each Product Group that the shared amp will appear in. Also, the amp must receive an input signal from the processor’s output for each source or source unit group (see Figure 10). There are several ways to set up amp sharing systems, so call Audio Authority at 800-322-8346 with questions.

942	942
Rear	Sub

993 Model 993

Amp Sharing

Adapter

Shared

Amplifier

Figure 10. One shared amp may be selected for front rear or sub positions (see Appx. B p. 48).

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Ampifier Bypass

The source signal is supplied when no products in an amp group are selected. For the bypass option, remember 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.	940
	Speaker Selectors. This			This module could switch
	configuration could switch			four speaker pairs, but does
	eight speaker pairs.			not have the AutoDamping
				Circuit.

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BEGIN INSTALLATION

1. Preparation

Follow these steps carefully:

A.Review the design of the demonstration area.

•Make sure the display fixture is correct for your installation.

•Look at the supplied system wiring diagram, or choose one from this manual to serve as an example. Examples are in Appendix A: Sample Systems.

•Gather the owner’s manuals of other products that are part of your system for reference during the installation.

B.Gather the tools and materials you will need.

You will need at least the following:

•#1 and #2 Phillips screwdriver bits

•#1 small slotted screwdriver

•Power screwdriver (especially one with a torque clutch)

•Wire cutter/stripper

•Cable ties (4” is good)

•7/64” and 3/4” drill bits

•7/16” nut driver or open-end wrench

•flashlight

•14 - 18 gauge speaker wire

•high quality RCA patch cords

C.Check the contents of the shipping cartons. If your system is not pre-installed, use the packing list and your wiring diagram to identify the system components and determine how each component fits into your wiring plan. Refer to the list of Access™ System Components on page 8 to help identify the various items.

2. Address and Other Settings

The Access System is made up of smart modules, able to communicate with each other and a control panel when appropriate. Each “main switching module” (see Figure 14) has a set of rotary switches for assigning its unique ID or “address.” There are two parts to the address: the “group” number and the “module ID” number. The group number is the general place a module resides in the system, like a street in a city. The module ID is the unique number assigned to each module like individual house addresses on one street. Therefore, each module ID must be unique within the same product group.

958	922
	932

942

940

Figure 14. Main Switching Modules and location of Group switch. (Model 910D is always Group 0.)

A. Number the Product Groups.

First, determine the portion of the address called the group number. A basic group address example is shown below. The column to the right shows the order in which groups appear on the 902 Control Panel. Refer to your system plan to make a chart like the one below. Number each Product Group starting with Head Units (always Group 0).

Electronics	Speaker	Group	902/903 Control
Product Group	Product Group	Number	Panel Display
Head Units		0	1
Processor/EQs		2	2
Front Amplifiers	Front Speakers	4	3,4
Rear Amplifiers	Rear Speakers	5	5,6
Sub Amplifiers	Subwoofers	6	7,8

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	Note that the front amps and speakers
	have matching group numbers as do	ASD
	the rear amps and speakers. As a rule,					SOURCES
	related amps and speakers have match-	å Demonstration Network
			Patents Pending
	ing group numbers; this determines	1	2	3	A	PROCESSOR/EQ
	how the 902 Control Panel, if used,					FRONT AMP
	handles Volume Compensation of the	4	5	6	B
	products in these Groups. Figure 15	7	8	9	C
	shows how the 902/903 Control Panel					FRONT SPEAKERS
	would arrange these product groups on		0		SECURE
	its Product Group display windows.					REAR AMP
				SilenTouch ™	Theft Alert
	B. Determine the Module ID settings.	EQUAL VOLUME COMPARISON				REAR SPEAKERS
			ATTENUATION / SPL
	Number the modules in each group to	ON / SPL
						SUB AMP
	put the products in the desired order in	(STORE)			ATTEN.
		MUTE		DECIBELS
					LEVEL
	the group. Use the following table for					SUBWOOFERS
		(ADJUST)	P-NOISE AUTO-CAL
	the appropriate module ID setting for
	each module.				Model 902 Control Panel
		Figure 15. This is how product groups appear on the 902 Control Panel.
		The display shows which product in each group is selected.

Sources, EQs and Amplifiers									Speakers
Switching	Addressing		Set the MODULE ID to:					Addressing		Set the MODULE ID to:
Modules	Sequence for							Sequence for
910, 922,	Product		slide		rotary			932		slide	rotary
958, 942	Positions		switch		switch			Product Grps		switch	switch
1st module:	1	- 4	0 - 9		0			1 - 8		0 - 9	0
2nd module :	5	- 8	0 - 9		1			9 - 16		0 - 9	1
etc...	9	- 12	0 - 9		2			17 - 24		0 - 9	2
	13 - 16		0 - 9		3			25 - 32		0 - 9	3
	17 - 20		0 - 9		4			33 - 40		0 - 9	4
	21 - 24		0 - 9		5			41 - 48		0 - 9	5
	25 - 28		0 - 9		6			49 - 56		0 - 9	6
	29 - 32		0 - 9		7			57 - 64		0 - 9	7
	33 - 36		0 - 9		8			65 - 72		0 - 9	8
	37 - 40		0 - 9		9			73 - 80		0 - 9	9
	41	- 44	10 -	19	0			81 - 88		10 - 19	0
	45	- 48	10 -	19	1			89 - 96		10 - 19	1
	49	- 52	10 -	19	2			97 -99		10 - 19	2
	53	- 56	10 -	19	3
	57	- 60	10 -	19	4
	61	- 64	10 -	19	5			How to Use These Tables
	65	- 68	10 -	19	6
								Read accross from left to right. For the 1st
	69	- 72	10 -	19	7
								module’s addressing sequence (products
	73	- 76	10 -	19	8
								one through four) set the MODULE ID to
	77	- 80	10 -	19	9
								“0 - 9” on the slide switch, and “0” on the
	81	- 84	20 -	29*	0
								rotary switch.
	85	- 88	20 -	29*	1
	89	- 92	20 -	29*	2
	93	- 96	20 -	29*	3
	97	- 99	20 -	29*	4
								* Contact the factory if this address is needed.

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C. Set the Address Switches.

Some Group settings are made at the factory, and cannot be changed later. Figure 16 shows the first switch module (Model 910D) in the first Product Group (head units). It has a default address of Group #0 (set at the factory) and the Module ID is set to #00 (this lets the system know this module is connected to the first four products in this product group). The second 910 would be addressed 01, and the third module, 02, etc. Always start with zero, not one, for the first module in any group.

Figure 17 shows the address settings for the fourth module in the Processor/EQ Product Group. The group default is #2 and the address is set to #03.

D. Set the Programming Switches.

Programming Switch Settings “S M B T D.”

Figure 16. First head unit Module with the address 0/00 (Group/Module ID).

Figure 17. This Model 958 would be the fourth and last module in group 2 (Processor/EQs), because bypass is ON.

Models 910, 940EZ and 942 have a DIP switch array with small rocker switches labeled S M B T D (Model 910 has T and D only). The slide switches are set to “Off” at the factory. The switches are defined as:

S	M	B	T	D
Single	Multi-	Bypass	Time	Delay
Stereo	Channel

“D” turns on the DC Power Delay feature and works with the Power Mode switch setting on the 980 module. Use the following chart to determine switch settings. Set the 980’s “Power Mode” switch and each main module’s “D” and “T” switch using the chart below.

Figure 18. The thirteenth (and last) module in Group 4 (Front Amps). Bypass is ON (“B” in programming switch array SMBTD).

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

“T” sets the amount of time delay to allow for product turn-on, if “D” is ON. “T” - OFF = 3/4 second delay for head units and low power amps.

“T” - ON = 3 second delay for high power amps using switching power supplies.

The “T” switch should be OFF (3/4 second delay) for 910 modules, and ON for 942 modules (3 second turnon delay for large power amps).

Also, see “Choosing the Power Mode for Your System” on page 24 for more detailed information on the three different Power Mode settings available for your Access™ System.

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