CVA50-1 NET Series - Sound Directions France
Contents
1. 6 2 4 Estimate Approval An estimate for all non warranty repairs will be provided to the custom er once the unit has been shipped to the factory The customer is re sponsible 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 6 2 5 Payment of Non Warranty Repairs Payment for non warranty repairs must be submitted to Stewart Audio before the product will be returned to the customer 7 Accessories 8 Notes The following accessories are available from Stewart Audio for your amplifier All part numbers shown are Stewart Audio Part Numbers Mounting Brackets AV POLE Pole mount bracket for AV Series amplifiers AV BRACKET Universal mounting bracket for AV Series amplifiers Connection Adapters ADPT RCA Mono Female RCA to male Euroblock ADPT SUMRCA Stereo Female RCA to male Euroblock ADPT SUM35 Stereo Female 3 5mm to male Euroblock Wall Plates WP RVC B Wallplate with 10k potentiometer and knob for re mote volume control Black WP RVC A Wallplate with 10k potentiometer and knob for re mote volume control Aluminum For Your Record In the spaces provided below record the model and serial To purchase these accessories or to see the full number located at the rear of your amplifier Stewart Audio product lineup visit us at Model No www stewartaudio com Serial No Purchase Date Retain2. the signal is overdriv ing the signal light flashes red frequently Overdriving the amplifier for extended periods of time can cause a thermal shutdown Problem Output sound is distorted or cracking Procedure Check all cables for damage or loose connections and re duce the gain on the input signal at the mixer or preamp level Replace the cables and loudspeakers temporarily to see if this resolves the problem If problem still exists contact your Authorized Dealer for ser vice 5 Technical Specifications Maximum Output 30Hz 20kHz CVA 50 Frequency Response 0 3 dB Power Bandwidth 3dB THD N Signal to Noise Ratio Remote Volume Control Input Sensitivity Standard Voltage Gain Input Impedance Balance Unbalanced Sleep Idle Current Draw 1 8 Draw Class Input Connectors Output Connectors Power Supply Cooling Controls LED Indicators Construction Plenum Rating Dimensions Height Width Depth Weight Stewart Audio reserves the rate to change features and specifications without notice 50W 100V 70V 100HZ 20kHz 80Hz 30kHz lt 0 1 gt 80dB 0 10V DC 4 pin Block 5V 3 dBV 151X 43dB 70 7V 20k Ohms 10k Ohms 3 3 6 9 14 2 Watts D RJ45 Euro Block 3 pin 3 5mm NET Euro Block 2 pin 5mm External In Line 48DVC Convection Cooling Level Power Signal Clip Aluminum Chassis UL 2043 Approved 1 25in 8 2cm 4 00in 10 2cm 6 00in 15 2cm 1 2 lbs 0 54kg 6 Warranty I
3. this information for future reference
4. to check the repair status 6 2 3 Packaging Instructions Should Stewart Audio request that you ship your product to their ser vice center these instructions must be followed in order to ensure safe delivery If they are not followed Stewart Audio assumes no responsi bility for damaged goods and or accessories that are sent with your unit 6 2 3 Packaging Instructions cont 1 Please write the RA number on three sides of the box Include the Stewart Audio RA number inside the box and a brief description of the problem 2 Do not ship any accessories manuals cords hardware etc with your unit These items are not needed to service your product Stewart Audio will not be held responsible for these items if they are returned with the amplifiers 3 When shipping your amplifier it is important that it has adequate protection We recommend you use the original packing material when returning the product for repair If you do not have the origi nal box see number 4 4 If you provide your own shipping pack the minimum recommend ed requirements for materials are as follows a 275 P S l burst test Double Wall carton that allows for 2 inch solid Styrofoam on all six sides of unit or 3 inches of plastic bubble wrap on all six sides of unit b Securely seal the package with an adequate carton sealing tape c Do not use light boxes or peanuts NOTE Damage caused by poor packaging will not be covered un der warranty
5. you will need to manually set an IP address in the Network Configuration sec tion of Windows Next go to Tools gt Options in the top menu and make sure the proper network device is selected in the top dropdown Q Can the CVA50 1 NET transmit the input channels to other Cobra Net devices A No the CVA50 1 NET is designed only to receive audio Q What submap channels do the CVA50 1 NET use A Since the CVA50 1 NET is a 2 channel device only the first two submap channels are valid channels 1 and 2 Data sent on channels 3 8 will be ignored 3 3 2 Using CobraNet Discovery Utility The CobraNet Discovery utility can be downloaded from the Cirrus Log ic website at http Awww cobranet info downloads disco Once installed it should be launched from a computer on the same network as the CVA50 1 NET After the program launches it will search for CobraNet devices The CVA50 1 NET will appear as Attero Tech CobraNet CEP2224 If this is the first time you are setting up this device or the device has been power cycled the IP address will appear as 0 0 0 0 To set an IP address for easier recognition right click the device and select Update IP Address To ensure visibility assign it to the same subnet as the computer you are configuring it from CobraNet tm Discovery CobraNet Edit View Tools Help S IP Address MAC Address errorCount sysDescription iY 192 168 100 91 001ce200097e Attero Tech CobraNet CEP222 v
6. EERE on STEWARTAUDI The Difference is Hear CVA50 1 NET Series Owner s Manual June 2012 www stewartaudio com Important Safety Instructions Before using your Stewart Audio Inc Power Amplifier please read this Owner s Manual carefully to ensure optimum trouble free perfor mance WARNING TO REDUCE THE RISK OF ELECTRICAL SHOCK DO NOT EX POSE THIS AMPLIFIER TO RAIN OR MOISTURE DANGEROUS HIGH VOLTAGES ARE PRESENT INSIDE THE ENCLOSURE DO NOT OPEN THE CABINET REFER SERVICING TO QUALIFIED PERSONNEL ONLY CAUTION DO NOT OPEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL The lighting bolt within arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of un insulated dangerous voltage within the product s enclosure that may be of sufficient mag nitude to constitute a risk of electrical shock to person 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 Important Safety Instruction Please Read Prior to Product Installation 1 Installation should be performed by a trained and licensed professional to insure safe and lasting operation All of the safety and operating instructio
7. When left unused for a long period of time the power cord should be unplugged from the outlet Damaged Amplifiers requiring service should be repaired by a qualified service technician when The power cord or AC plug has been damaged Objects have fallen or liquid has spilled into the unit The amplifier has been exposed to rain or other moisture The amplifier does not appear to operate normally or exhibits a marked change in performance e The amplifier has been dropped or the enclosure damaged aon The user should not attempt to service the amplifier beyond that de scribed in the operating instructions All other servicing should be referred to qualified service personnel Table of Contents Important Safety INStrUCTIONS s eee ett eet eee tt tt ee eet anes 2 Table Of CONTENTS seeeeeeetee etter etter teeter e eter teaser teaser tear ee ees 4 1 Welcome 000 0 ei ee rere reer rete 5 1 1 FEaTUTES e teetttteterittstrrtretrintntrrnntrrntnttnnenntntntennnentnnEEEt EEEE EE 5 1 2 Using this Manual seeeesessssssersrresssssreesrrrnnnnnsnnrnrrnnennerererrene 5 V NST 0 e REECE OEE SEES ESOS SOEEEESSEOOOSEOSOOOOOOOOSOOOOOOOSOOOOEOSOS 6 2 1 Setup PreCAUtiONS eree see etter ete ee tte e eet ates 6 2 2 Amplifier Installation cccecc etter ee teeter eee e ere 6 2 2 1 Pole Mount Installation s secerrt titi 6 2 2 2 Universal Mount Installation sreerreeees 7 2 2 3 Product DIMENSIONS verre ttt tt t
8. ckets to the amplifier Do not overtighten 2 2 3 Product Dimensions P 6 00in i 15 3cm 1 25in 3 2cm Front 4 00in______ 10 2cm 1 25in 3 2cm Side 2 3 Proper Cooling Considerations Because CVA Series amplifiers regulates their temperature using con vection cooling and no fans the amplifiers must be given adequate space to allow for proper airflow Do not stack the amplifiers on top of each other or mount it in a way that other equipment will block airflow along the surfaces of the case CAUTION Inadequate airflow to the amplifier can cause the amplifier to overheat and potentially become damaged in the process Be sure to provide plenty of air space to allow for convection cooling 2 4 Input Connections NET Models Only Your CVA Series amplifier is provided with a 3 pin Euro Block connector for its input connection This connector will accept both balanced or unbalanced connections however some modifications must be made for an unbalanced connection See the next two sections for instruc tions on connecting your amplifier to its input source 2 4 1 Balanced Input Connections When using a balanced input source and connector you must ensure that the hot cold and ground pins of the connector are matched up to the and ground pins of the CVA Series Euro Block connector re spectively Diagrams have been provided for standard XLR and TRS connectors Please refer to the manual of your input
9. e repair process 6 2 Return Procedure This section includes the return procedures which must be followed in order to prevent processing delay or cost to the customer Please read the entire section before contacting Stewart Audio for returns 6 2 1 Return Authorization Number All returns to the factory for service must be accompanied by a Return Authorization RA number One can be obtained by contacting Stewart Audio at 209 588 8111 or via e mail at support stewartaudio com NOTE Any defective products received without an RA number will be returned to sender at their expense If Stewart Audio is unable to contact the sender in 14 days the mer chandise will be considered scrap and may be disposed of 6 2 2 Shipment Instructions If Stewart Audio requests that you ship the defective product back to their service center please refer to the guide below To ensure prompt warranty service be sure to follow all instructions 1 Return Authorization RA is required for product being sent to the factory for service 2 See packing instructions in section 6 2 3 3 Ship the defective product using a method which provides for or der tracking or order confirmation The service center is located at the following address Stewart Audio 14397 Cuesta Court Suite D1 Sonora CA 95370 4 Use a bold black marker and write the RA number on three sides of the box 5 Record the RMA number for future reference The RA number can be used
10. ee settee eee e eee tees 24 6 2 4 Estimate Approval eeseeeeeerrereeserererterernererenneneenenee 25 6 2 5 Payment of Non Warranty Repair seses 25 7 ACCESSOLIES 0 ee eee eter reer ae es 26 8B NOTES EEE 27 1 Welcome aag STEWARTAUDIO The Difference is Hear Congratulations on the purchase of your new Stewart Audio CVA Se ries power amplifier This amplifier has been designed and built to pro vide you with years of high quality audio performance and trouble free operation If after reading this manual you should have any questions concerning amplifier installation and operation please contact your Au thorized Stewart Dealer or you may contact us directly using the con tact information provided on the back of this manual 1 1 Features Your Stewart Audio CVA Series amplifier is the result of years of expe rience in the design and manufacture of quality amplifiers As such it provides a combination of performance and operational benefits that simply cannot be found in conventional amplifiers e Sub Compact 1 4 rack package e CobraNet for two channels of net work audio e Mono constant voltage amplifier 100V or 70 7V e Selectable priority switching NET only e Remote volume control NET only e Multiple mounting options e External inline power supply e Made in the USA 1 2 Using this Manual In order to obtain maximum performance from your CVA Series Ampli fier please take time to read this brief owner s man
11. erete 8 2 3 Proper Cooling Considerations tect teeters 8 2 4 Input CONNECTIONS verre teeter ttt tt ttt tite ennees 9 2 4 1 Balanced Input CONNECTIONS seeeseereerrerrrerreeeeree 9 2 4 2 Unbalanced Input Connections ree 10 2 5 Output CONNECTIONS vere et eee terete ttre eres 11 2 5 1 Constant Voltage vrei etertet tte tiene 11 2 5 2 Wiring Example secerreeee setters eter teeter ee eeeees 12 3 Operation cc eee eee eee ee ert aees 13 3 1 Operation Precautions ete eeeettetete etter tenes 13 3 2 Controls Indicators ANd CONNECTOIS viet etree tee 14 3 2 1 INGICATOLS 11s eee eee e etter e teeter tte eee rere teat ee 16 3 2 2 CONOIS verve ett tte eee eee eee ee teeta aees 16 3 2 3 Remote Volume Control eeerrceeeetrrees 17 3 2 4 Signal Priority SWITCHING eee essere ete t etree eee eeee 17 3 3 V0 0 r 1 1 MEER EERE EEE OEE CECSOOECOOOOOSOOOOOOSOOOOOOOOOOOOOOS 18 4 Troubleshooting eee eee eter ae ee 21 5 Technical Specifications cette eees 22 6 Warranty Information eee eter ee es 23 6 1 Warranty SUMMALy verre etter eet e eter teeter ee eees 23 6 1 1 Eligibility for Factory Repair 23 6 2 Return Procedure verses eeeeeeeeeeteetetteee teste eet eter sete ttaeeeeees 23 6 2 1 Return Authorization 1cecceecccie eset teeter eeeees 24 6 2 2 Packaging INStrUCTIONS eeseeeeeettteeeteeetetttteeeeees 24 6 2 3 Shipping INStrUCTIONS eeeee
12. ersi 3 3 2 Setting Up Bundles To open up the bundle configuration window double click on the de vice listed in the screen above You will see 2 Tx and 2 Rx bundles ready to configure Do not configure the two Tx bundles Single click on each of the Rx bundles shown as 300 and 301 in the screen capture on the next page to make the fields editable From here you can enter a new bundle numbers Rx 1 and Rx 2 directly correspond to Channel 1 and Channel 2 of the amplifier CobraNet Configuration IP Address Conductor Bundle Type Number 4 Troubleshooting Problem Power indicator does not turn on Procedure Check that the unit s power supply is plugged into a func tioning outlet and the power supply is correctly connected to the unit Ensure that there is an audio signal present on the audio input indicated by the green LED being lit If the unit is powered up but in sleep mode due to no signal the blue power LED will not be lit Problem No output heard on speakers Blue power indicator is lit Procedure Check that level controls are not turned down Check that input and output connections are secure Ensure signal present LED is lit to denote a signal If there is no signal detected check signal source and that level controls are set high enough Problem Amplifier overheats and or shuts off Procedure Review section 2 3 on proper cooling procedures Check the clip LED on the rear of the amplifier to see if
13. ken wires 2 5 1 Constant Voltage The Euro Block connector on the rear of the amplifier is capable of sup plying output at either 100V or 70V depending on the step down trans formers which will be used in the speaker installation For information on specific step down transformer installation information please con sult the transformer s manufacturer s literature 2 5 2 Wiring Example The diagram below is a typical wiring setup for two speakers with out board step down transformers wired in parallel to the 70V output op tion of a CVA Series amplifier Output Connector 100V 70V y 3 Operation 3 1 Operating Precautions 1 Before use your amplifier must be configured for proper opera tion including input and output wiring hookup Improper wiring can result in damage to equipment or potentially harm to the operator Consult section 2 for setup instructions 2 Tampering with the circuitry or making unauthorized changes is not only dangerous but may also violate local regulations 3 Use care when making connections between the amplifier and the input or output equipment Using equipment that is not capable of handling the output wattage may lead to permanent damage NOTE Stewart Audio will not be held responsible for damage to your CVA Series amplifier or connected equip ment if the instructions in this manual are not followed NOTE For additional operating precautions please refer to Important Safet
14. nformation 6 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 purchas er This warranty is only valid in the country in which the amplifier was purchased 6 1 1 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 e The power cord or AC plug has been damaged through misuse e The amplifier has been exposed to moisture or extreme tempera tures e The amplifier has been dropped items have been dropped on the amplifier or the enclosure has been damaged e The amplifier has been opened by the operator e The amplifier was improperly packaged when sending to the fac tory for repair resulting in damage e 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 con tact information below to initiate th
15. ns should be read before the am plifier is installed or operated Retain these instructions for future refer ence All instructions should be followed all warnings on the amplifier and in the operating instructions should be adhered to 10 11 The amplifier should be situated so that its location and position does not interfere with its proper ventilation For example the amplifier must not be placed on a rug bed sofa or similar surface that impedes airflow across the chassis Airflow around the unit should be unobstructed This amplifier should not be used near water for example near a bathtub in a wet basement near a swimming pool etc This amplifier is intended to be operated in a controlled indoor environment Do not place the amplifier near heat sources such as radiators heat regis ters stoves or other appliances that produce heat The amplifier s power supply should only be connected to 120 VAC 60 Hz power source Do not defeat the ground or polarization of the power plug Route power cord and other cables so that they are not likely to be walked on tripped over or stressed Pay particular attention to condition of cords and cables at plugs and at the point where they exit the amplifi er To prevent risk of fire or injury damaged cords and cables should be replaced immediately Clean the amplifier with a clean damp cloth Do not use solvents or abra sive cleaners Never pour any liquid on the amplifier
16. ou purchase the pre wired connectors mentioned on the next page Damage to source equipment can result from the Pre wired unbalanced connectors are available for purchase from Stew art Audio These will allow for a quicker installation with less room for error when connecting the CVA Series amplifier to an unbalanced source The summing adapters will properly sum a stereo source for use with the mono input on the rear of the amplifier without causing sound cancellation Part numbers are found below the diagrams ADPT RCA ADPT SUMRCA ADPT SUM35 Mono Stereo Stereo Female RCA Female RCA Female 3 5mm 2 5 Output Connections Because of the differences in the way that constant voltage amplifiers work as opposed to a typical 8 ohm setup the wiring procedure and the gauge of wire used is very different Constant voltage systems and speakers use a smaller current flow than the typical 80hm systems and thus can use a higher gauge thinner diameter wire Please refer to the following g chart to choose the ap propriate wire gauge for your installation Distance Wire Gauge Up to 500ft 22 AWG 500 1000 ft 20 AWG Over 1000ft 18 AWG Speaker leads connect by means of removable Euro Block connectors supplied with the unit Strip speaker leads 1 4 and insert leads into connector observing proper polarity With a small flat blade screwdriv er tighten the screw until the leads are held securely in place Inspect for possible shorts or bro
17. source in case it does not follow the standard pin out Input Connector Input Connector Male TRS ae ra Shield Connector enlarged to show detail NOTE The CVA Series of amplifiers do not accept TRS in puts wired for a stereo source TRS inputs should only be used for balanced mono inputs 2 4 2 Unbalanced Input Connections When using an unbalanced input source and connector a jumper must be added between the negative terminals and the ground terminals Once this has been done the unbalanced source can be connected to the positive and ground terminals Please refer to the manual of your input source in case it does not follow the standard pin out For your convenience pre wired connectors are available for purchase see the next page for details NOTE A jumper is required for connecting an unbalanced input Input Connector Ground aS Male RCA C lt f A jumper has been added between the o Ground negative terminals and ground Input Connector Ground N Male TS femman i a m A jumper has been added between the negative terminals and ground Ground Shield NOTE The CVA Series of amplifiers do not accept stereo A inputs Either one side must be selected from the stereo source or an overload protected Y cable must be used to sum them to mono It is highly recommended that y
18. ual and carefully follow the guidelines for connection and operation This manual provides you with the information necessary to safely in stall and operate your new CVA Series amplifier in the most common scenarios If you find yourself requiring additional assistance please feel free to contact your Authorized Dealer or you may contact us di rectly using the contact information provided on the back of this manu al 2 Setup 2 1 Setup Precautions CAUTION Before installing your amplifier make sure that you have read the Important Safety Precautions at the be ginning of this manual 2 2 Amplifier Installation The CVA Series incorporates a number of different mounting options in order to fit your installation needs 2 2 1 Pole Mount Installation The CVA Series amplifier casing has mount holes on both the top as well as the side of the unit which can be used with the AV Pole bracket available from Stewart Audio Two screws are included in the kit which will affix the bracket to the top or side of the unit Part Number AV Pole 2 2 1 Universal Mount Installation The CVA Series also has a universal bracket available which allows the unit to be mounted against a wall or under a table Two screws are included in the kit which will affix the bracket to the top or the side of the unit Once this is done two holes are available for mounting the unit where desired CAUTION Use only the screws provided in mounting bra
19. y Instructions located on Page 2 3 2 Controls Indicators and Connectors Signal Priority Switch Signal Present Indicator LED 1 CobraNet Connector 4 Power Indicator LED CobraNet Connector 3 Power Indicator LED Line Out 5 Power Connector 3 Channel Level Knob O Clip Indicator LEDs 3 Signal Present Indicator LED 6 Speaker Out Connector Input Connector 10 Power Connector 5 Line Out Speaker Out Connector 6 Remote Volume Control 3 3 CobraNet 3 3 1 CobraNet FAQ Q How do CobraNet devices communicate on the network Do they receive an IP address A CobraNet devices operate without the need for an IP address Many configuration applications for CobraNet devices will assign an IP ad dress for organizational purposes However CobraNet devices operate using data channels called bundles In order to connect a transmitter and a receiver in a CobraNet network both devices simply need to be set to the same bundle number There is no need for a DHCP server a router for example Q How do I configure the bundles of the CVA50 1 NET A Bundle settings should be configured using Cirrus Logic s CobraNet Discovery Utility Instructions for downloading and operation can be found in section 3 3 2 Q Why is the CobraNet Discovery Utility not detecting any devices A First ensure that your computer has an IP address If you are operat ing without a DHCP server ie in a switch only network then
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