CVA100-2 #1 Sig/Clip Power/Active #2 CVA100-2 With Dante / CobraNet Options Owner’s Manual June 2013 www.stewartaudio.
Important Safety Instructions Before using your Stewart Audio Inc. Power Amplifier, please read this Owner’s Manual carefully to ensure optimum trouble-free performance. WARNING: TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT EXPOSE 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.
. 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. 4. 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. 5.
Table of Contents Important Safety Instructions······························································ 2 Table of Contents ················································································ 4 1 Welcome ························································································· 5 1.1 Features ··············································································· 5 1.
1 Welcome 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 operation. If after reading this manual you should have any questions concerning amplifier installation and operation, please contact your Authorized Stewart Dealer, or you may contact us directly using the contact information provided on the back of this manual. 1.
2 Setup 2.1 Setup Precautions CAUTION: Before installing your amplifier, make sure that you have read the Important Safety Precautions at the beginning 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.
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 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.
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 sections for instructions on connecting your amplifier to its input source. 2.4.
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.
Pre-wired unbalanced connectors are available for purchase from Stewart 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 Mono Female RCA ADPT-SUMRCA Stereo Female RCA ADPT-SUM35 Stereo Female 3.5mm 2.
2.5.1 Constant Voltage Wiring Example The diagram below is a typical wiring setup for two speakers with outboard step-down transformers wired in parallel to one of the 70V outputs on a CVA100-2 amplifier.
3 Operation 3.1 Operating Precautions 1. Before use, your amplifier must be configured for proper operation, 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.
3.
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 being supplied proper AC power and is active (not in sleep mode) respectively.
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) frequencies 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.
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 access to the Dante Controller User Manual which should be read for complete configuration instructions.
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 matrix. Unlike CobraNet, Dante does not require IP configuration or bundle configuration.
All Stewart Audio products will ship from the factory as being named Ultimo-. 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 channels. 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.
3.4 CobraNet 3.4.1 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 address 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.
3.4.2 Using CobraNet Discovery Utility The CobraNet Discovery utility can be downloaded from the Cirrus Logic 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.
4 Troubleshooting Problem: Power indicator does not turn on. Procedure: Check that the unit is plugged into a functioning outlet. 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 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.
5 Technical Specifications Output Power 100W x 2 @ 70.7V Frequency Response (+0, -3 dB) 65Hz—20kHz THD+N <0.1% Signal-to-Noise Ratio >90dB Input Sensitivity 1V (0 dBV) Input Impedance (Bal/Unbalanced) 20k Ohms/10k Ohms Current—Standby, Idle, 1/8 Power 0.01W/10W/35W Amplifier Class D Remote Volume 0-10V External Mute Contact-closure High-Pass Filter (Selectable) 65/85/150Hz Input Connectors RJ45, Euro Block 3-pin, 3.5mm Output Connectors Euro Block 2-pin, 3.
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 purchaser. This warranty is only valid in the country in which the amplifier was purchased. 6.1.
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 merchandise will be considered scrap and may be disposed of. 6.2.
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.
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.
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.
14397 Cuesta Court Suite D1 Sonora, Ca. 95370 Phone: 209-588-8111 Fax: 209-588-8113 28 www.stewartaudio.
