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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 

 
 

Summary of Contents for ii3-ESS

Page 1: ...ii3 ESS IP Speaker System Users Guide ...

Page 2: ...ESS User Manual 2 This page intentionally left blank ...

Page 3: ... 70V Speaker s with optional 25 70V transformer 7 Connections and Controls 8 Speaker Connection 8 Power Supply Amplifier 8 Network 9 LED Indicators 9 Volume Controls 9 Software Configuration 10 Physical Dimensions 11 Software Support 12 Recommended Power Supply for Max High Power modes 12 Troubleshooting 13 Technical Support 13 ...

Page 4: ... and 3rd 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 includin...

Page 5: ... Voice band Power over Ethernet PoE 802 3af compatible Requires maximum 15 4 Watts from PSE Power Supply Low Amp Mode 14 20 VDC 20 Watts Low Amp Mode Power Output 8 Watts Nominal 3 THD 24V 28V AC 40 Watts Power Supply High Amp Mode 24V 36V DC 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 C 70 C Oper...

Page 6: ...stribution 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 wired in parallel Here is the layout of the taps on a typical transformer ...

Page 7: ...t 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 Red 25V 10W tap and the lead marked Pri Com 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 Com to the speakers Snip off any exposed wires...

Page 8: ... 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 ...

Page 9: ...owing 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 ...

Page 10: ...he 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...

Page 11: ...vailable The low setting is 7 5 watts and the high setting is 20 watts When using PoE the low amplifier setting must be used When using an external power supply either the high or low setting can be used Before powering up the ii3 ESS the jumpers for the Power Supply and Amplifier must be set in the correct position The Jumpers consist of 5 columns of 2 pins located on the side of the unit labeled...

Page 12: ...ity Description Ready Link Active Unit is connected to the Server Solid Solid Off Unit is playing audio from the Server Solid Solid Flashing Unit is trying to connect to the Server Slow Flash Solid Off Unit does not have a valid network connection Any Off Any Unit has been discovered by the Intercom Configuration Tool Fast Flash On Unit has not been configured to connect to a Server Slow Flash On ...

Page 13: ...modules When found configure the following parameters o Select Client mode o Specify DHCP or an IP address Subnet and Gateway o Specify Location Name to uniquely identify the ESS o Specify the Server IP address the ESS is to connect to o Check the Remote Listen Disable option o Click Apply to save the changes ...

Page 14: ...11 Physical Dimensions 4 9 3 4 2 8 1 5 4 0 ...

Page 15: ...t the Remote Listen Disable option when configuring the ii3 ESS Refer to documentation for 3rd party software that supports Digital Acoustics technology Recommended Power Supply for Max High Power modes Class 2 24VAC 40 VA 40 W Some Examples MOUSER AMSECO XF 2440 MOUSER AMSECO XR 2450LED ...

Page 16: ...ting to is running the proper software Unit will not play audio Verify the units Ready and Link LEDs are on solid Verify the units Active LED flashes when receiving audio Verify ESS Speaker connections To reset the ESS Configuration back to factory default Unplug the Power Press and hold down the Vol and Vol buttons Plug the power back in Wait 2 seconds Release the Vol and Vol buttons Technical Su...

Page 17: ...Notes ...

Page 18: ...l specification before product design and or use Design and specifications are subject to change without notice Digital Acoustics ii3 and TalkMaster are trademarks of Digital Acoustics Corporation all other marks used are properties of their respective owners Digital Acoustics product designs are packaged by leading manufacturers around the world ...

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