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PoE Series Audio Amplifiers Operations Manual Rev E 

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between the PSE (Power Sourcing Equipment) and powered device (PD) for available power, nor do they 
monitor the power drawn and shut down if an overload or open circuit condition occurs. These passive 
injectors and switches can be used with Stewart Audio PoE amplifiers, however safe operation is not 
assured under these conditions. 

One final note: According to the 802.11 standard, an 802.3at (PoE+) PD (powered device) can be 
connected with to an 802.3af (PoE) PSE. Stewart Audio PoE+ amplifiers adhere to the standard, so it is 
possible to run these PoE+ amplifiers from PoE PSE’s. But since the PoE PSE can only deliver 15.4W 
maximum per port (vs. 30W for the PoE+), the amplifier cannot deliver the full specified audio power 
without causing the PSE power to shut down power to the port and renegotiate the powered 
connection.  The same is true for the PoE++ amplifiers.  They will operate with a PoE or PoE+ PSE, but at 
lower power levels. 

9.

 

Warranty Information 

9.1.

 

Warranty Summary 

All Stewart Audio amplifiers and accessories, unless excluded in this summary, are covered by a 3-year 
limited warranty on parts and labor from the data of purchase. In order to be eligible for warranty 
repairs, the amplifiers and accessories must have been purchased through an authorized Stewart Audio 
dealer and submitted by the original purchaser. This warranty is only valid in the country in which the 
amplifier was purchased. 

9.2.

 

Eligibility Requirements 

Stewart Audio warrants against all malfunctions which come as a result of component or manufacturer 
defect. The amplifier is also covered from all failures which arise during the warranty period (3 years 
from date of purchase) that are not a result of misuse. The following actions will void your warranty: 

 

The power cord or AC plug has been damaged through misuse. 

 

The amplifier has been exposed to moisture or extreme temperatures. 

 

The amplifier has been dropped, items have been dropped on the amplifier, or the enclosure has 
been damaged. 

 

The amplifier has been opened by the operator. 

 

The amplifier was improperly packaged when sending to the factory for repair, resulting in 
damage. 

 

Any of the precautions or instructions found in this manual were not followed. 

Damages resulting to the amplifier which are not covered under this warranty can be factory-
repaired at cost to the customer. Use the contact information below to initiate the repair process. 

9.3.

 

Non-warranty repairs 

An estimate for all non-warranty repairs will be provided to the customer once the unit has been 
shipped to the factory. The customer is responsible to approve this estimate within 7 days. If the 
repairs are not approved within 14 days, Stewart Audio reserves the right to consider the unit scrap 
and may discard it. Payment for non-warranty repairs must be submitted to Stewart Audio before 
the product will be returned to the customer. 

Summary of Contents for AV20-2-LZ-D

Page 1: ... Ethernet PoE Series Audio Amplifiers User Manual AV8 2 LZ D 2 Channel 16W Dante PoE Amplifier AV20 2 LZ D 2 Channel 40W Dante PoE Amplifier CVA16 1 CV D Single Channel 40W Dante PoE Amplifier CVA40 1 CV D Single Channel 40W Dante PoE Amplifier AV8 2 LZ D CVA16 1 CV D AV20 2 LZ D CVA40 1 CV D ...

Page 2: ...titute a risk of electrical shock to person 3 1 2 The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instruction in the literature accompanying the appliance 3 2 Warnings WARNING TO REDUCE THE RISK OF ELECTRICAL SHOCK DO NOT EXPOSE THIS AMPLIFIER TO RAIN OR MOISTURE 3 3 User responsibility 3 3 1 Speake...

Page 3: ...r destroyed if overpowered Always check the loudspeaker s continuous and peak power ratings to prevent such an occurrence Do not rely solely on the amplifier s volume control to reduce output power to a level safe for the loudspeakers 3 3 4 Maintenance Clean regularly with a soft cloth to remove dust and debris ...

Page 4: ...lity 2 5 Welcome 5 5 1 Features 5 5 2 Unpacking and visual inspection 5 5 3 Installation and setup 5 6 Rear panel Connections and Indicators 6 7 Specifications 9 8 Troubleshooting 10 8 1 Considerations when using PoE amplifiers 11 9 Warranty and repair information 12 9 1 Warranty summary 12 9 2 Eligibility requirements 12 9 3 Non warranty repairs 12 10 Return procedure 13 10 1 Shipment instruction...

Page 5: ...uct is carefully tested and inspected before leaving the factory and should arrive in perfect condition If any damage is discovered please notify the shipping carrier immediately Save the packing materials for the carrier s inspection and for any future shipping 5 3 Installation and setup 5 3 1 Cooling and ventilation Due to the high efficiency of these PoE amplifiers the heat generated is minimal...

Page 6: ...h If using a mid span PoE injector connect this port to the Power Data port on the injector and connect the Data port of the injector to the 100 1000BaseT switch AV8 2 LZ D and CVA16 1 CV D models 1 Dante Audio and DC Power Input Connect a Cat5e 6 cable between this RJ 45 jack and a PoE port 60W port power on the 100 1000BaseT network switch If using a mid span PoE injector connect this port to th...

Page 7: ...nt flow in constant voltage systems and speakers is much lower than in 4 8Ω systems higher gauge thinner diameter wire can be used Connect the loudspeaker wires to either the 70V or 100V pair of terminals observing proper polarity Care should be used when working around the speaker terminals Although not officially recognized as a shock hazard in the UL60065 Safety Requirements touching these term...

Page 8: ...TE Class 2 wiring must be used on the speaker terminals to comply with UL requirements CAUTION The speaker terminals represent a shock hazard as they carry 70 7V and 100V when driven with an audio signal Disconnect the amplifier from the AC power source when working on these terminals ...

Page 9: ... 1 CV D 90dB 88dB Channel to Channel Separation Crosstalk 85dB Noise floor AV8 2 LZ D and AV20 2 LZ D CVA16 1 CV D and CVA40 1 CV D 110dBV 95dBV Amplifier Class D Input Connector Dante Audio and DC RJ 45 Output Connector 5mm Euroblock LED Indicator Power Construction Aluminum Cooling Convection no fan Dimensions 1 2 H x 6 70 W x 4 31 D 31 x 170 x 110mm Weight AV8 2 LZ D and AV20 2 LZ D CVA16 1 CV ...

Page 10: ...coming from the transmitter A green checkmark at the intersection of the transmitter and PoE amplifier receiver in the Network View screen indicates that a Dante subscription has been established In the Device View screen for the PoE amplifier the speaker symbol should be green not gray See the Dante Help for more detailed information The amplifier cycles on and off over a several second period Ch...

Page 11: ...larger and more reliable Dante networks While Gigabit switches are recommended 100Mbps switches may be used in limited scenarios For channel counts of 32 or more Gigabit switches are essential QoS is required when using Dante in networks that have 100Mbps devices QoS is also recommended for Gigabit switches on networks that share data with services other than Dante For lower channel count 32 appli...

Page 12: ... submitted by the original purchaser This warranty is only valid in the country in which the amplifier was purchased 9 2 Eligibility Requirements Stewart Audio warrants against all malfunctions which come as a result of component or manufacturer defect The amplifier is also covered from all failures which arise during the warranty period 3 years from date of purchase that are not a result of misus...

Page 13: ...duct using a method which provides for order tracking or order confirmation The service center is located at the following address Stewart Audio 14335 Cuesta Court Suite C Sonora CA 95370 Use a bold black marker and write the RA number on three sides of the box Record the RMA number for future reference The RA number can be used to check the repair status 10 2 Packaging Instructions Should Stewart...

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