Digital Acoustics ii3-ESS User manual

ii3-ESS
IP Speaker System
Users’ Guide

ESS User Manual
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ESS User Manual
i
Table of ontents
Overview ................................................................................. 1
Specifications........................................................................... 2
25/70 Volt Lines ....................................................................... 3
Speaker onfigurations ............................................................. 5
8 Ohm Speaker(s) ................................................................. 5
25/70V Speaker(s) with optional 25/70V transformer ................. 7
onnections and ontrols .......................................................... 8
Speaker onnection ............................................................... 8
Power Supply / Amplifier ........................................................ 8
Network................................................................................ 9
LED Indicators....................................................................... 9
Volume ontrols .................................................................... 9
Software onfiguration.............................................................10
Physical Dimensions.................................................................11
Software Support ....................................................................12
Recommended Power Supply for Max (High) Power modes ...........12
Troubleshooting ......................................................................13
Technical Support ....................................................................13

1
Overview
The Digital Acoustics’ ESS IP Speaker System is designed to drive an 8
Ohm speaker load or speakers attached to a 25/70V distribution line
(requires optional 25/70V Transformer). Software support is provided
by Digital Acoustics’ TalkMaster LE™, TalkMaster EE™ or by and 3
rd
parties supporting Digital Acoustics® technology.
Features
• IP Addressable
• Lossless audio distribution to endpoint
• Operates over LAN, WAN and Wireless networks
• Powered via PoE or external power supply
• Operates over wide power supply range
• Built in thermal protection
• Volume control via software or onboard controls
• Drives one or several speakers
• Wide selection of speaker configurations including:
o Horns
o Weatherproof
o eiling panels
o Wall panels
o Vandal proof

2
Specifications
Hardware Protocols T P, UDP, DH P, ARP
Network Interface 10/100 Base-T Ethernet (Auto
detection)
ommand protocols Digital Acoustics ® Proprietary
Network Bandwidth
Utilization 64 khz
Audio Resolution P M 8bit and uLAW 8bit
Frequency Response 300-4 kHz (Voice band)
Power over Ethernet* (PoE 802.3af
compatible). Requires maximum
15.4 Watts from PSE
Power Supply - Low Amp
Mode
14-20 VD @ 20 Watts
Low Amp Mode Power Output 8 Watts Nominal 3%THD
24V-28V A @ 40 Watts
Power Supply - High Amp
Mode 24V-36V D @ 40 Watt
High Amp Mode Power
Output
18 Watts Nominal 3%THD
20 Watts/8Ω 20% THD
Load Impedance 8 Ohms nominal. Limiting range 4-
16 Ohms
Temperature 0' ~ 70' (Operating), -40~85'
(Storage)
Humidity 10~90%
Dimensions 5.0” x 3.5” x 1.5”

3
25/70 Volt Lines
The ii3-ESS can be ordered with an optional 25/70V audio transformer.
The optional audio transformer allows the ii3-ESS to driver one or
more speakers attached to a 25/70V distribution line. All speakers
must have their own 25/70V transformer. This allows the ESS to be
located further away (up to 3000 feet with 18 gauge wire) from the
speaker(s) and allows an individual speaker’s volume to be adjusted
using its transformer taps. When using an ESS with a 25/70V
transformer, speakers must always be wire in parallel.
Here is the layout of the taps on a typical transformer

4
To use the optional transformer:
• onnect the transformer to the mounting holes on the top of the
ii3-ESS using the included screws (#6-32 x 3/16)
• onnect the transformer leads marked Sec Black and 8 Ohm to
the included terminal block plug and connect it into to the
Speaker terminal on the ii3-ESS
• Determine if you will be tapping your speakers for 25V or 70V:
o For a 25V distribution line and speakers, use wire nuts to
connect the Re 25V 10W tap and the lead marked Pri om
to the speakers
o For a 70V distribution line and speakers, user wire nuts to
connect the Blue 70V 10W tap and the lead marked Pri om
to the speakers
• Snip off any exposed wires on the unused taps and tie them
back
70V 10W Setup

5
Speaker Configurations
The ii3-ESS is designed to drive an 8 Ohm load or speakers attached
to a 25/70V distribution line (requires optional 25/70V Transformer).
One or more speakers can be driven by a single ii3-ESS. If more that
one speaker is connected to an ii3-ESS, all speakers will sound when
audio is sent to that ESS.
Below are the guidelines for attaching 8 Ohm speakers to the ii3-ESS:
8 Ohm Speaker(s)
The following configurations are supported for driving 8 Ohm
speakers:
• A single 8 Ohm speaker
• Two 8 Ohm speakers wired in series

6
• Four 8 Ohm speakers wired in series-parallel
Please note the following guidelines:
• Speakers should be installed within 100 feet (30 meters) of the
ESS using 18 gauge wire
• The total amount of wire used in the wiring run should not
exceed 200 feet (60 meters)
• The total watts available from the ESS are distributed equally
among the speakers.

7
25/70V Speaker(s) with optional 25/70V transformer
The ESS can drive one or more 25/70V Speakers or Horns when
equipped with an optional 25/70V transformer. When using 25/70V
transformers, all speakers must be wired in parallel.
Please note the following guidelines:
• Each speaker must have its own 25/70V transformer
• Speakers should be installed within 1500 feet (450 meters) of
the ESS using 18 gauge wire
• The total wattage available from the ESS must be reduced by
20% to account for line loss
• The total wattage of the selected speaker taps cannot exceed the
wattage available from the ESS (7.5 watts for PoE, 20 watts for
external power)
• Maintain the same wiring polarity between speakers