Audio Authority 1715 Bedienungsanleitung
User Manual
Model 1715
Headphone Demonstration Amplier
Introduction
The 1715 is designed to provide high delity amplication and theft detection for
headphones in self service retail demonstrations. Only one of the four outputs may
be active at any one time. Larger switching systems, linked by Expansion Bus and
audio patch cords, can allow one live position on each 1715 or one live position
in the entire system (see Expansion Bus). When a demo session times out, the
headphones are silent. The next demo starts at the default volume, regardless of
the volume level of the previous demo. For best results use a commercial grade
lossless audio player such as our Model 1703.
POWER INPUT
STATUS LED
POWER OUTPUT
CUSTOMER INPUT
DEMO TIMEOUT
GAIN
HEADPHONE
POSITION 1
HEADPHONE
POSITION 2
HEADPHONE
POSITION 3
HEADPHONE
POSITION 4
AUDIO BUS OUT
SIREN OUTPUT
12 3 4
THEFT DETECT
(See page 4)
FEATURE SWITCHES
(See Expansion Bus
and Control Port)
DEFAULT INPUT
PRODUCT SELECT
BUTTONS
THEFT INDICATOR
OFF ON
EXPANSION BUS
RESET SWITCH
1795 Rotary Control with
black knob.
Package Contents: 1715 headphone demonstrator, DC power adapter
Features
• Up to 500 mW (into 32 ohms), frequency response 12Hz - 23kHz (+/- 0.5 dB),
S/N ratio 96dB, THD+N (1VRMS @ 1 kHz) = 0.07%
• Adjustable demonstration timeout, returns to silent mode, resets volume
• Automatic selection of customer audio source when connected
• Theft detect option with integral alarm and external siren contacts
• Multiple units (up to four) can share source signal and volume controls
Audio Sources and Customer Auto Demo
Connect a 1703 music player to the Audio Input jack as the default source. If desired,
provide a 3.5mm cord connected to the Customer Input so that customers may
use their own music players to demonstrate headphones. When audio is detected
on the Customer Input jack, the customer device is automatically selected as the
audio source. If no audio is detected on the Customer Input for 3 seconds, the 1715
switches back to the Default Input.
Audio Bus Out
The bus output feeds the currently selected audio input to more 1715 modules or
other audio devices in the system. Connect a 3.5mm patch cord from the rst 1715
bus output to the second 1715 default Audio Input, etc. One linked system sharing a
Default Input also must share one Customer Input (do not use any Customer inputs
besides the rst 1715).
Product Select Button (PSB) Ports
Customers can activate one product at a time using a four-wire
LED push-button switch (sold separately). Connect a button for
each corresponding product. The LED in the button blinks
during the demonstration.
Expansion Bus
Expansion Bus is a four-conductor cable that allows multiple 1715
modules to form one coordinated system. They can coordinate current product
selection and volume control, as well as alarm signals and alarm reset. The expanded
system may allow one output per 1715 module to play (Module Mode), or one output
for the entire system (System Mode). Turn on Feature Switch 1 of each 1715 to
activate System Mode.
Control Port
To control volume on all outputs, connect a 1795 Visual Volume™
Control knob (sold separately). This control option gives visual
feedback with its glow ring, its brightness indicating volume
changes; a slow pulse highlights the knob during attract mode.
Push to mute, and rotate knob to adjust volume. Turn on Feature
Switch 2 of the primary 1715 when using one 1795 to control
multiple 1715 ampliers.
Buttons are available
in several styles
and colors.
1795 Visual Volume
Control knob.
752-693
Rev. 20180319
2048 Mercer Road, Lexington, KY 40511-1071 USA
800-322-8346 • 859-233-4599 • Fax: 859-233-4510
support@audioauthority.com • www.audioauthority.com
Timeout Interval
The demo timer is initiated each time a customer selects a product output to
audition. The demonstration length is set by the timeout switch, in 15 second
increments. If the switch is set to 0, then the automatic demonstration timeout
feature is disabled. After the timeout expires, all outputs are de-selected and the
volume is reset.
Power
Connect included 12V power supply to Power Input. Connect jumper to other
1715 units if desired, up to four units total.
How to Set the Gain Control
• Raise the volume controls (on the player and/or 1715) to
maximum.
• Connect a pair of headphones to the 1715 that has similar
impedance and sensitivity to the range of headphones you
wish to demonstrate.
• Turn the 1715 Gain dial (see chart below) to 1 and start the music player.
• Select a headphone position, and raise the 1715 Gain dial to the point of
distortion, then adjust it down to the desired maximum level.
Gain 0 12 3 4 56789
*(mW) 0.9 1.5 3.2 513 30 70 185 475 500
Theft Detection
1715 theft detection (off by default) is compatible with most headphone models,
including models with active circuitry such as noise cancelling. Activate theft
detection using the Theft Detect switches. All devices should be tested for
proper detection behavior upon installation. If detection does not work for a
particular device, disable detection for that port. For more information go to www.
audioauthority.com/product_details/1715.
Operation
On power up, the status light blinks to show normal operation. Press a product
select button to demo headphones. The default volume level is a percentage of
the maximum, relative to the Gain setting. When the Customer Input is being
used, the Status light blinks rapidly. If used, the 1795 volume control light ring
pulses in attract mode and indicates volume levels during a demo.
*Power rating taken at 1% THD+N, 1kHz input, using 32 ohm load.
GAIN DIAL
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