Audio Authority 1725 Instructions Manual

Instructions

Model 1725

Soundbar Demonstrator

DATE LTR REVISION RECORD AUTH DR CK

1/10/13 P1 Prototype DAF

2/13/13 P2 Prototype - move power light etc DAF

Model 1725 Soundbar Demonstrator Installation and Operation

Overview

The 1725 is a cost-effective, full-featured demonstration platform that employs the latest DSP technology
to demonstrate soundbars in multiple congurations.

• Each module demonstrates up to eight soundbars; audio signals and power may be bussed to
additional units

• Durable, illuminated Product Select Buttons (PSB) may be used to activate a demo (see PSB Details)

• Volume up/down buttons or rotary encoder knob may be used for master volume control

• A keep-awake feature prevents soundbars from entering sleep mode

• Adjustable default volume, minimum and maximum volume levels, and timeout interval

• Source input can be digital audio (2-channel PCM) or analog audio

• Optical, coaxial, and analog audio is simultaneously available to all output positions (normal mode)

• TV sound toggle mode switches each position between TV sound and soundbar (analog vs. digital)

ROTARY

POWER

INPUT

POWER

BUS OUT

FEATURE

SWITCHES

TIMEOUT

INTERVAL

MAXIMUM

VOLUME

MINIMUM

VOLUME

DEFAULT
VOLUME

ENCODER

(VOLUME

KNOB)

VOLUME UP

AND DOWN

(2-WIRE)

INPUT BUS

12V DC

POWER

BUS IN BUS OUT

Model 1725 Soundbar Demonstrator

AUDIO

INPUTS

AUDIO

BUS OUT

OPTICAL DIGITAL AUDIO

COAXIAL DIGITAL AUDIO

LEFT ANALOG AUDIO

RIGHT ANALOG AUDIO

®

FEATURES

PSB

PRODUCT SELECT

BUTTONS (2-WIRE, 5V)

TIMEOUT MIN VOL MAX VOL DEFAULT

1 2 3 4 5 6 7 8

PRODUCT SELECT

BUTTONS (4-WIRE, 12V)

Designing Your System

The rst step is to choose a presentation type:

• Audio-only presentation with no TV

• Video and audio presentation with one TV and multiple soundbars

• TV sound “toggle” system: one TV paired with each soundbar

UPDOWN VOLENCODER

701-1434

SOUNDBAR

AUDIO

CONNECTIONS

The second step is to decide on the method of volume control and what, if any, volume settings are
desired. If master volume control is not used, customers must use the individual volume controls on
each soundbar. This method provides interaction with the product, but can introduce unexpected volume
differences when switching between soundbars. If the 1725 master volume control is used, it is best to
disable soundbar controls, or install acrylic shields over the controls to prevent customer access to them.

2

PSB Details

DATE LTR REVISION RECORD AUTH DR CK

1/10/13 P1 Prototype DAF

2/13/13 P2 Prototype - move power light etc DAF

TIMEOUT MIN VOL MAX VOL DEFAULT

UPDOWN VOLENCODER

701-1434

1 2 3 4 5 6 7 8

PSB

FEATURES

Push-buttons are used to select each soundbar position, and to adjust volume
(if buttons are used). The 1725 is compatible with our standard 2-wire, 5-volt
momentary PSB switches, or 4-wire, 12-volt switches. When using 2-wire switches
(as shown), use the two pins on the right for PSB ports, and for volume button ports,
use the two pins on the left, as shown in the diagram.

Demo Features

1 2 3 4

2-WIRE

PSB PINS

FEATURES

ON

Keep Awake: Sends a short, inaudible tone to soundbars to prevent them

from entering sleep mode. Set feature switch 1 and 2 as shown to disable or
adjust the keep awake feature. If enabled, soundbar keep-awake operates
any time all products are off, or if the timeout switch is set to 0 (never time out)
then keep-awake operates constantly.

Keep Awake

Level

Disabled off off

-40 dB off on

-30 dB on off

-20 dB on on

Attract Mode: The volume buttons blink when the demo is not active. Set feature
switch 3 to the ON position to enable attract mode, OFF to disable.

TV Sound Toggle Mode: Each product select button-press toggles its output
between analog and digital audio. The rst button-press activates the analog audio
output (TV sound) and the second press toggles to the digital output (soundbar), etc.
Set feature switch 4 to the ON position to enable TV Sound Toggle mode, OFF to
disable.

Timeout Interval: At the end of the timeout interval, (a period of inactivity) the volume
control resets to the default level, all outputs are turned off, and attract mode begins
(if enabled). Turn timeout OFF (set to 0) if the demo should play continuously. 0 = no
timeout, 1 = 15 second timeout, 9 = 2.25 minute timeout.

Switch 1Switch

Attract

Mode

Disabled off

Enabled on

TV Toggle

Mode

Disabled off

Enabled on

Switch

Switch

2

3

4

The formula for the timeout calculation is: 15 seconds * switch setting.

Volume Control Settings

No Master Volume Control

Set the maximum, minimum, and default volume switches to 9.

Master Volume Control

• Rotary encoder knob: Set feature switch 2 to the ON position and connect volume knob (rotary
encoder) to Encoder port.

• Push buttons: Set feature switch 2 to the OFF position and connect 4-wire buttons to volume up and
down ports.

Maximum and Minimum Volume: If you are using master volume control, set the maximum and
minimum volume levels as desired. 9 on the dial is equal to 0 dB (highest volume) while 0 is equal to -27
dB (lowest).

The formula for volume level is: switch setting * 3 dB - 27 dB.

MIN VOL MAX VOL DEFAULT

3

Connecting the System

Product Connections (Normal Mode): Connect one audio type (analog, digital coax, or optical) at each
1725 soundbar output position to a soundbar input.

PSB: Connect a product select button to correct pins on associated PSB port for each active product.

Product Connections (TV Sound Toggle Mode): Select digital coax, or optical for output to each

soundbar, and connect analog audio at each position to a TV audio input. Connect a product select button
to the associated PSB port. Note: the source signals for TV Sound Toggle Mode should be Component
Video and analog audio.

Expanding the System

Multiple 1725 modules may be used together to expand the system beyond eight positions. To expand
the system, connect a digital audio coax cable from the audio Bus Out jack to the Digital Bus In jack on
the next 1725. Tip: Leave some space between connected demo areas because each a selection on one
1725 does not cancel a selection on another 1725 sharing the same source signals.

Power

Connect 12V power supply (1A or greater) to Power Input. Connect the power Bus Out to the next 1725
provided the power supply is large enough. Each 1725 requires 600mA.

Operation

Normal Mode (Soundbar vs. Soundbar)

Apply power to the 1725. The power LED lights and begins ashing to indicate that it is ready for
operation. Press a product select button (PSB) to select an output. The selected channel passes optical,
digital coax, and analog audio from the input device. Either type of audio signal, analog or 2-channel PCM
digital, is converted so that all outputs are driven.

Select other product positions, or press the button of a selected product to turn it off.

Note: Toggle mode does not allow a position to be turned off. Timeout (if enabled) turns all positions off.

Volume Buttons: Press and hold volume up or down button in order to adjust the volume level while a
product is selected.

Volume Knob: rotate the encoder clockwise to turn the volume up and counterclockwise to turn the
volume down.

If a selected product times out or is turned off, the master volume resets to default levels.

TV Sound Toggle Mode

Same as Normal Mode with the following differences:

Press a product select button and analog audio is passed to the TV speakers rst, and then with the next
button press, digital audio is passed to the soundbar at the same position. Press the button again, and the
analog audio plays through the TV, etc.

2048 Mercer Road, Lexington, Kentucky 40511-1071

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

Phone: [phone] • Fax: [phone]

Website: http://www.audioauthority.com

752-658 Rev. 201300625