Audio Authority 1725A Soundbar Demonstrator
User Manual
Overview
The 1725A is a cost-effective, full-featured demonstration platform that employs the latest DSP technology to demonstrate soundbars in multiple configurations.
- Each module demonstrates up to eight soundbars; power may be bussed to additional 1725A modules.
- 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 (normal mode).
- 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).
Front Panel Description
Description of the 1725A front panel: Inputs include 12V DC POWER, BUS IN, and a main audio source input (DIGITAL OR ANALOG). Controls include switches for FEATURES, TIMEOUT, and knobs for MIN/MAX/DEFAULT VOLUME and ENCODER. Audio outputs are OPTICAL DIGITAL, COAXIAL DIGITAL, LEFT ANALOG, and RIGHT ANALOG. Eight numbered output positions (1-8) are provided for soundbars. Branding and model information are present.
Package Contents
Before installing, please check the packaging for the following items:
- 1725A Soundbar Demonstrator
- DC Power Adapter
- User Manual
Note: Please retain the original packing material for returns. If items are missing, contact Audio Authority® immediately at 800-322-8346. Have the model number and invoice available.
Designing Your System
The first step is to choose a presentation type:
- Presentation with multiple soundbars and one TV for video only.
- TV sound "toggle" system: one TV paired with each soundbar (see TV Sound Toggle Mode).
The second step is to decide on the method of volume control. If the 1725A volume control is not used, customers must use individual soundbar controls, which may lead to volume differences. If the 1725A volume control is used, it is recommended to disable soundbar controls or shield them to prevent customer access.
PSB Details
Push-buttons are used to select each soundbar position and optionally adjust volume. The 1725A is compatible with 2-wire or 4-wire switches. For 2-wire switches, use the two pins on the right for PSB ports and the two pins on the left for volume button ports, as shown in the diagram on page 2.
Demo Features
Keep Awake
Sends a short, inaudible tone to soundbars to prevent them from entering sleep mode. Feature Switches 1 and 2 control this feature. If enabled, soundbar keep-awake operates when all products are off, or if the timeout is set to 0 (never time out), it operates constantly.
Keep Awake Switch Settings:
| Switch Settings | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| Disabled | OFF | OFF | - | - |
| -40 dB | OFF | ON | - | - |
| -30 dB | ON | OFF | - | - |
| -20 dB | ON | ON | - | - |
Diagram Description: A visual representation of the "FEATURE SWITCHES" with four toggle switches labeled 1, 2, 3, 4, showing ON and OFF positions.
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.
Attract Mode Switch Settings:
| ATTRACT MODE | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| - | - | ON | - |
TV Sound Toggle Mode
Each product select button press toggles its output between analog and digital audio. The first press activates analog audio (TV sound), the second press toggles to digital audio (soundbar), and so on. Set Feature Switch 4 to the ON position to enable TV Sound Toggle Mode; OFF to disable.
TV Toggle Mode Switch Settings:
| TV TOGGLE MODE | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| - | - | - | ON |
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.
Diagram Description: A visual representation of "ROTARY SWITCHES" with labels for TIMEOUT, MIN VOL, MAX VOL, and DEFAULT.
Volume Limits and Default Volume
Min Vol and Max Vol dials can be adjusted from low (0) to high (9). Level 9 equals 0 dB (highest volume), while level 0 equals -27 dB (lowest). The Default setting determines the volume level at initial power-up and between demonstrations.
Connecting the System
Product Connections (Normal Mode)
Connect one audio type (analog, digital coax, or optical) at each 1725A soundbar output position to a soundbar input.
PSB Connections
Connect a product select button to the correct pins on the associated PSB port for each active product.
Product Connections (TV Sound Toggle Mode)
Connect a product select button to the associated PSB port. For TV Sound Toggle Mode, source signals should be Component Video and analog audio. HDMI source signals can cause issues with audio signal flow for TV sound vs. soundbar demonstrations.
Source Connection
Select digital coax or optical for output to each soundbar, and connect analog audio at each position to a TV audio input. Connect an audio source (analog, digital coax, or optical) to the 1725A input. Source signal is available in all formats to soundbars and/or TVs.
Power
Connect a 12V power supply (1A or greater) to the Power Input. The 1725A requires 600mA. The power Bus Out can be connected to another device if the power supply is sufficient.
Operation
Normal Mode (Soundbar vs. Soundbar)
Apply power to the 1725A. The power LED lights and flashes, indicating readiness. Press a product select button (PSB) to select an output. The selected channel passes optical, digital coax, and analog audio from the input device. Any audio signal type (analog or 2-channel PCM digital) is converted for all outputs.
Select other product positions or press the button of a selected product to turn it off.
Volume Control
Push-buttons: Press and hold volume up or down buttons to adjust the volume level while a product is selected.
Volume Knob: Use a 1794 rotary control (sold separately) to rotate clockwise for volume up and counterclockwise for volume down.
Image Description: An image shows illuminated push-buttons used for selecting soundbar positions and adjusting volume. These are available in various styles, including a pictured stainless steel 4-conductor button with a red LED ring.
Image Description: An image shows a 1794 Rotary Control knob (sold separately) for volume adjustment, shown with an optional black anodized finish knob.
TV Sound Toggle Mode
This mode operates similarly to Normal Mode with key differences:
- Pressing a product select button passes analog audio to the TV speakers first.
- The next button press toggles to digital audio for the soundbar at the same position.
- Subsequent presses cycle between TV audio and soundbar audio.
- This mode does not allow a position to be turned off individually.
- Timeout (if enabled) will turn all positions off.
If a selected product times out or is turned off, the system's volume resets to the default volume levels.
