CVA100-2 - Manual
Contents
1. 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 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 24 6 2 3 Packaging Instructions cont 1 Please write the RA numb2. 2 All of the safety and operating instructions should be read before the am plifier is installed or operated Retain these instructions for future refer 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 When left unused for a long period of time the power cord should be unplugged from the outle
3. 3 Shipping Instructions 24 6 2 4 Estimate Approval 25 6 2 5 Payment of Non Warranty Repair 25 7 Accessories eee 26 8 Notes eee 27 1 Welcome a STEWARTAUDIO The Difference is Hear Congratulations on the purchase of your new Stewart Audio CVA100 2 power amplifier This amplifier has been designed and built to provide you with years of high quality audio performance and trouble free oper ation If after reading this manual you should have any questions con cerning amplifier installation and operation please contact your Author ized Stewart Dealer or you may contact us directly using the contact information provided on the back of this manual 1 1 Features Your Stewart Audio CVA 100 2 amplifier is the result of years of experi ence 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 Compact 1 2 rack package e 2channel constant voltage amplifier e Optional Factory Installed Dante or CobraNet e Selectable Hi Pass Filter e Remote volume control and muting e Signal Sense Technology e RS232 or IR controllable via available accessories e Ultra efficient switch mode power supply lt PFC gt e Made in the USA 1 2 Using this Manual This manual provides you with the information necessary to safely in stall and operate your new CVA 100 2 amplifier in the most commo
4. the heat generating components inside In the event the internal ambient temperature reaches 85 degrees centigrade the protection circuit will shut down the power supply until the amplifier cools down Although the sophisticated thermal management system in the CVA100 2 makes it less susceptible to overheating than other amplifi ers it remains good practice to provide airspace around the chassis CAUTION Inadequate airflow to the amplifier can cause the amplifier to overheat and potentially become damaged in A the process Be sure to provide plenty of air space to allow for convection cooling 2 4 Product Dimensions 8 26in gt 21cm CVA100 2 1 75in 1 Sig Cip 2 Power Active le 10 6in gt 27cm 1 75in 4 6cm Side View 2 4 Input Connections Your CVA 100 2 amplifier is provided with a 3 pin Euro Block connector for each of the two 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 sec tions for instructions 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 100 2 s Euro Block connector re spectively Diagrams have been provided for standard XLR and TRS connectors Please ref
5. STEWARTAUDIO The Difference is Hear STEWART CVA100 2 1 Sig Clip 2 Power Active CVA100 2 With Dante CobraNet Options Owner s Manual June 2013 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 SERVIC ING TO QUALIFIED PERSON A A 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
6. e wired connectors mentioned on the next page Damage to source equipment can result from the use of a standard Y NOTE The CVA 100 2 does not accept stereo inputs Either 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 100 2 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
7. er 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 I 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 use light boxes or peanuts NOTE Damage caused by poor packaging will not be covered un der warranty 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 re
8. er to the manual of your input source in case it does not follow the standard pin out Input Connector v t Female XLR mre NOTE The CVA 100 2 does not accept TRS inputs wired for a stereo source TRS inputs should only be used for bal anced mono inputs Input Connector Male TRS Bm 8 Gum Shield Connector enlarged to show detail 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 T NOTE A jumper is required for connecting an unbalanced input Input Connector PN Male RCA A jumper has been added between the Ground negative terminals and ground Shield 9 9 Input Connector Ground 7N Male TS Q E A jumper has been added between the negative terminals and ground Ground Shield 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 you purchase the pr
9. ere you can enter a new bundle numbers Repeat the same procedure for the Tx bundles 20 4 Troubleshooting Problem Power indicator does not turn on Procedure Check that the unit is plugged into a functioning outlet En sure 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 active LED will not be lit Problem No output heard on speakers Blue power indicator is lit Procedure Check that physical level controls are not turned down Check that input and output connections are secure Ensure signal pre sent LED is lit to denote a signal If there is no signal detected check signal source and that level controls are set high enough If using Co braNet ensure that it is properly configured and sending full level au dio Refer to section 3 3 Problem Amplifier overheats and or shuts off Procedure Review section 2 2 3 on proper cooling procedures Check the clip LEDs on the front or rear of the amplifier to see if the signal is overdriving the signal light flashes red frequently Overdriving the am plifier 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 res
10. 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 he power cord or AC plug has been damaged through misuse e he amplifier has been exposed to moisture or extreme tempera tures e he 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 the 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 23 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
11. it the input channels to other CobraNet devices A Yes the CVA100 2 is designed to transmit two channels and receive two channels over CobraNet 3 4 2 Using CobraNet Discovery Utility The CobraNet Discovery utility can be downloaded from the Cirrus Log ic website at http www cobranet info downloads disco Once installed it should be launched from a computer on the same network as the CVA100 2 After the program launches it will search for CobraNet devices The CVA100 2 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 se lect 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 5 IP Address MAC Address errorCount sysDescription 192 168 100 91 001ce200097e Attero Tech CobraNet CEP2224 versi 3 4 2 Setting Up Bundles CobraNet Configuration Conductor Advanced Report Configure Bundle Type Number Status 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 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 h
12. l for fire alarm situations in which all unnecessary sound must be silenced NOTE If the remote volume control connector is utilized it will override the volume knob on the rear of the unit In order to remotely control the volume of the unit a 10k ohm potenti ometer should be placed between the 10V pin and the GND Ground pin on the rear of the unit with its wiper on the RVC pin The volume will be determined by the selected resistance on the potentiometer the greater the resistance the louder the volume The amplifier can be remotely muted by making a connection between the GND pin and the MUTE pin No power should be applied to these pins simply a contact connection 10V 4 0 RVC GND Nog MUTE 3 3 Dante If you have selected the Dante version of the CVA100 2 configuration is done using the Dante Controller software from Audinate Dante Controller Software can be found on Audinate s website at www audinate com From there you can select Dante Controller under the Products section This will require registration for Audinate s portal and also includes ac cess to the Dante Controller User Manual which should be read for complete configuration instructions 16 3 3 1 Using Audinate s Dante Controller Software Once Dante Controller has been installed following the instructions in the Dante Controller Software User Manual found at www audinate com launch the application to see the connection ma
13. leads are held securely in place Inspect for possible shorts or broken wires 10 2 5 1 Constant Voltage Wiring Example The diagram below is a typical wiring setup for two speakers with out board step down transformers wired in parallel to one of the 70V out puts on a CVA100 2 amplifier Output Connector 3 Operation 3 1 Operating Precautions 1 12 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 Tampering with the circuitry or making unauthorized changes is not only dangerous but may also violate local regulations 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 100 2 amplifier or connected equip ment if the instructions in this manual are not followed NOTE For additional operating precautions please refer to Important Safety Instructions located on Page 2 3 2 Controls Indicators and Connectors CVA100 2 1 Sig Clip 2 Power Active 4 o Front Signal and Clip LEDs e Front Power Sleep Indicator e Power Connector PFC Rear Power Sleep Indicator 5 RVC and Mute Connector Speaker Outp
14. n 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 Rackmount Installation The CVA100 2 amplifier takes up only 1 2 of a standard 19 rack unit While it is not necessary to rackmount your CVA100 2 amplifier there are two options available if you would like to do so a single rackmount or a double rackmount NOTE Regardless of which rackmount option is used the A 4 adhesive rubber feet must be removed from the bottom of the unit 2 2 1 Single Rackmount A single CVA100 2 amplifier can be mounted on one rack unit with the RMK 70 S rackmount kit The kit includes 2 brackets which will center the CVA100 2 on a single rack unit 2 2 2 Dual Rackmount Two CVA100 2 amplifiers can be mounted on one rack unit with the RMK 70 D rackmount kit The kit will connect the two amplifiers and center them on a single rack unit Single Rackmount with RMK 70 S CVA100 2 n Sec s CVA100 2 n scp n n wcp 2 2 2 3 Proper Cooling Considerations Cooling of the CVA 100 2 amplifier is achieved by Stewart s unique whole chassis heatsink design which utilizes the entire chassis as a heatsink to cool
15. network A All Stewart Audio products are tagged as Ultimo MAC ADDRESS from the factory You can find the correct Ultimo device by choosing the correct MAC aadress from the list You can rename this using the device configuration 18 3 4 CobraNet 3 4 1 CobraNet FAO 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 configure the bundles of the CVA100 2 A Bundle settings should be configured using Cirrus Logic s CobraNet Discovery Utility Instructions for downloading and operation can be found in section 3 4 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 you will need to manually set an IP address in the Network Configuration sec tion of Windows Next go to Tools Options in the top menu and make sure the proper network device is selected in the top dropdown Q Can the CVA100 2 transm
16. olves the problem If problem still exists contact your Authorized Dealer for ser vice 21 5 Technical Specifications Output Power Frequency Response 0 3 dB THD N Signal to Noise Ratio Input Sensitivity Input Impedance Bal Unbalanced Current Standby Idle 1 8 Power Amplifier Class Remote Volume External Mute High Pass Filter Selectable Input Connectors Output Connectors Power Supply LED Indicators Controls Construction Mounting Cooling Dimensions Height Width Depth Weight 100W x 2 70 7V 65Hz 20kHz 0 196 gt 90dB 1V 0 dBV 20k Ohms 10k Ohms 0 01W 10W 35W D 0 10V Contact closure 65 85 150Hz RJ45 Euro Block 3 pin 3 5mm Euro Block 2 pin 3 5mm 85 265 VAC 50 60Hz Power Active Signal Clip Recessed Level Knobs Steel amp Aluminum Chassis Rack Mounting Convection Cooling 1 75in 4 6cm 8 26in 20 6cm 10 6in 27cm 2 8 lbs 1 27kG Stewart Audio reserves the rate to change features and specifications without notice 22 6 Warranty Information 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
17. on the rear of the unit There is no power switch so the amplifier will power up into a sleep state when power is first applied The CVA 100 2 s Signal Sense Technology SST will power up the amplifier from sleep when a signal is detect ed After 30 minutes without an input signal the amplifier will go into sleep mode To adjust the input sensitivity knob you will need a small flat head screwdriver While a typical program source level is present spin the rotary knob as far clockwise as you can without hearing distortion or without the Clip indicator glowing red If the signal is distorting and the knob is all the way counter clockwise adjust the gain down at the source level 14 Your CVA100 2 amplifier has 2 high pass filters one for each channel The high pass filter is used to attenuate reduce the volume of fre quencies below a desired cutoff point The high pass filters on the CVA100 2 have 3 cutoff points which can be selected 65Hz 85Hz 150Hz To make a selection slide the switch to the desired cutoff point The purpose of this high pass filter is to both prevent unwanted noise that can come in with the signal sources as well as to prevent damage to speakers which are unable to handle frequencies which are more suited for a subwoofer 3 2 3 Remote Volume Control CVA 100 2 amplifiers can have their volume remotely controlled or muted via the Euro Block input on the rear of the amplifier Remote muting is also usefu
18. pairs must be submitted to Stewart Audio before the product will be returned to the customer 25 7 Accessories The following accessories are available from Stewart Audio for your amplifier All part numbers shown are Stewart Audio Part Numbers Rack Mounting Brackets RMK 70 S Hardware for racking a single amplifier centered in a 1U space RMK 70 D Hardware for racking two amplifiers side by side in a 1U space 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 To purchase these accessories or to see the full Stewart Audio product lineup visit us at www stewartaudio com 26 8 Notes For Your Record In the spaces provided below record the model and serial number located at the rear of your amplifier Model No Serial No Purchase Date Retain this information for future reference 27 The Difference is Hear 14397 Cuesta Court Suite 01 Sonora Ca 95370 Phone 209 588 8111 Fax 209 586 8113 WWW Stewartaudio com
19. t 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 ooco 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 2 Table of Contents eee 4 1 Welcome Hee eee 5 1 1 Features ee 5 1 2 Using this Manual 5 2Setup eee eee eee 6 2 1 Setup Precautions e 6 2 2 Amplifier Installation m 6 2 3 Product Dimensions m ees 7 24 Input Connections m 8 2 5 Output Connections m 10 Operation eee 12 3 1 Operation Precautions 12 3 2 Controls Indicators and Connectors m 13 3 3 Dante eee 16 3 4 CobraNet eee eee 19 4 Troubleshooting 21 5 Technical Specifications 22 6 Warranty Information etter eens 22 6 1 Warranty Summary 23 6 1 1 Eligibility for Factory Repair 23 6 2 Return Procedure em 23 6 2 1 Return Authorization m 24 6 2 2 Packaging Instructions 24 6 2
20. trix ile Device Help S M A 7 Master Clock Console Multicast Bandwidth 0 bps Status Clock Status Events ee a SIEHE Filter Transmitters EE EE EH EH EHE EH EH EH EH 9 TIDante Transmitters HH A LLL LETETTE HEHHHHH 0 00000 EH EH EE EHI EH vester HH E EH EH EB EH HH EH i HI EH H0 FE EE BEBE EH HH a F F i BARA Unlike CobraNet Dante does not require IP configuration or bundle configuration Instead connections are made on the connection matri shown above X 17 All Stewart Audio products will ship from the factory as being named Ultimo lt MAC gt This can be renamed within the device configuration in the Dante Controller Transmitters are shown on the top of the matrix while Receivers are shown on the left hand side The CVA100 2 includes 2 receive chan nels In order to make a connection click on the matrix node between the appropriate transmitter and receiver If a connection is successful it will display a green checkmark 3 3 2 Dante FAQ Q am having problems installing or using the Dante Controller Soft ware A Please refer to the official documentation available in the Audinate portal where you downloaded the Controller Software Q I do not see the CVA100 2 showing up on the
21. ut Connector STEWART Power Active Network 1 Spkr 2 65 150 65 150 Network Input Optional High Pass Filter Selector Rear Signal and Clip LEDs Input Connectors Balanced Channel Level Controls 3 2 1 Indicators The CVA100 2 has a set of indicators for power signal and clip located on both the front and the rear of the amplifier The redundant indicators are intended to ease installation by giving feedback regardless of being in front of or behind the unit The Power and Active LEDs indicate whether the amplifier is be ing supplied proper AC power and is active not in sleep mode respec tively The amplifier will go into sleep mode after approximately thirty minutes of no signal on either input When it does so the Active light will go out leaving just the Power light on As soon as signal is detected again the Active LED will illuminate indicating that the am plifier is now back in normal operation mode The green LEDs labeled Sig will light when an audio signal is pre sent on the corresponding audio input channel The red LEDs labeled Clip will illuminate when the signal is too hot The Level control for that channel must be adjusted until the Clip LED goes out for un distorted sound amplification If clipping still occurs when the Level control is turned all the way down counter clockwise reduce the sig nal at the source 3 2 2 Controls All CVA100 2 controls are located
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