Audio Authority 1715 Manual de usuario

User Manual

Model 1715

Headphone Demonstration Amplier

Introduction

The 1715 is designed to provide high delity amplication 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 ampliers.

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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