Viola Systems LEGACY Owner's Manual

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LEGACY MONO POWER
AMPLIFIER
OWNER’S MANUAL
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© Viola Audio Laboratories 2009
The information contained in the manual is subject to change without notice. The most current version of this manual will be posted on our web site at www.Violalabs.com.
P/N: 91-legacymanual Revision: 0
Viola Legacy Manual Rev 0
Page 2 of 14
14th February 2009
TABLE OF CONTENTS
Safety Instructions 3
Introduction 4
Unpacking 4
Voltage Setting 4
Location 5
XLR Connector Pin Assignment 5
Speaker Cable Connection 6
o Single Speaker Cable Connection 6 o Bi-wiring Speaker Connection 7
Multi-amplification 7
AC Power Cable Connection 8
Switching on for the First Time 8
Remote On – Off 8
Breaking In 9
Care and Cleaning 9
Mains Fuse 9
Troubleshooting 10
Warranty 11
Service 12
Contacting VIOLA 13
Specifications 14
Viola Legacy Manual Rev 0
Page 3 of 14
14th February 2009
IMPORTANT SAFETY INSTRUCTIONS
Please read all of the following instructions before operating your power amplifier.
1. This product contains no user serviceable parts. NEVER attempt to repair the unit yourself. Refer all servicing to a VIOLA approved technician.
2. This product must be connected to the mains supply with a three­conductor AC mains power cord that includes a ground connection. To prevent shock hazard, all three connections must ALWAYS be used. NEVER defeat the ground connection.
3. ALWAYS disconnect your entire system from the AC mains before connecting or disconnecting any cables, or before cleaning any component.
4. NEVER operate this unit with any covers removed. Dangerous voltages may exist within the unit even when it is disconnected from the mains supply.
5. We do not recommend the use of AC extension cords with this product. If it is necessary to use an extension cord, please ensure that it meets the safety standards in your country and has sufficient current capacity. For 100V to 120V operation, use a cable with at least a 10A rating. For 220V to 240V operation, use a cable with at least a 5A rating.
6. NEVER use flammable chemicals for cleaning this product.
7. NEVER wet the inside of this product with any liquid, or operate the unit in a wet environment.
8. NEVER block air flow through the ventilation slots on either the top or the bottom of the unit.
9. NEVER bypass any fuses.
10. NEVER replace any fuse with a value or type other than those specified. Suitable replacements are available from your local VIOLA dealer, national distributor or directly from VIOLA.
11. NEVER expose this product to temperatures outside the range 0°C to 55°C, non-condensing.
12. ALWAYS disconnect the unit from the mains supply during lightning storms, or if the unit will not be used for a prolonged period.
Viola Legacy Manual Rev 0
Page 4 of 14
14th February 2009
INTRODUCTION
Thank you for choosing the VIOLA Legacy Amplifier. Great care has gone into the design and manufacture of the Legacy and if properly used, it will give a lifetime of musical enjoyment. We strongly recommend that you read these instructions before you attempt to use the unit, so that you can be sure it is set up to give optimum performance.
UNPACKING
Please keep all of the packing materials in case you ever need to ship the unit. Should you need to return the unit to the factory, you must use the original shipping carton. The use of any other packing may result in the product sustaining damage in transit. Such damage is not covered by the warranty. Replacement shipping cartons may be obtained via your VIOLA dealer, national distributor or directly from the factory.
After unpacking the unit, please confirm that the following items are present: 1 VIOLA Legacy power amplifier
1 user manual 1 three-conductor mains cord 1 Remote Cable 2 Spare Fuses
If any of the above items are missing, or if the amplifiers show any signs of damage, please contact your VIOLA dealer immediately.
VOLTAGE SETTING
Before going any further please, confirm that the unit is set to operate on the mains voltage you plan to use. The setting is indicated on the fuse cover. This is on the mains input receptacle located on the unit’s rear panel. Please see the section on the MAINS FUSE for more details. If the setting on your unit is not correct, contact your VIOLA dealer. Only a VIOLA approved technician should change the voltage setting. Do not attempt to do this yourself. Should you set the unit to the wrong voltage, you risk personal injury and you may also cause serious damage to the unit which will void the warranty.
Viola Legacy Manual Rev 0
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14th February 2009
We recommend that you place the Legacy as close to the loudspeaker as possible, as this reduces the length of speaker cable required. While this may make it necessary to use longer interconnect cables, long interconnects cause less sonic degradation than long speaker cables.
The unit may be placed on a stand or shelf, provided it is strong enough. Alternatively, it may be placed directly on the floor. In this case, please ensure that that the ventilation slots on the base of the unit are not obstructed by carpeting or other floor covering.
Never stack Legacy units on top of each other or place them on top of another power amplifier, or other source of heat.
Always allow a clearance of at least 3.5” (5cm) above the unit. You must also allow a clearance of at least 6” (15 cm) behind the unit, to enable the cables to be routed without being subject undue strain.
Regardless of where you locate your amplifier, we advise positioning it well away from sensitive low signal level components such as pre-amplifiers and turntables. The Legacy power amplifier dissipates approximately 400 watts as heat when idling (i.e. no input signal). It is normal and perfectly safe for it to run hot to the touch.
XLR CONNECTOR PIN ASSIGNMENT
The Legacy is fitted with 2 XLR type balanced inputs. The pin assignments of the Legacy’s XLR input conforms to the AES 14 standard, which is now commonly used throughout the audio industry. These assignments are shown below:
Pin 1:
Signal ground
Pin 2:
Signal + (non-inverting)
Pin 3:
Signal - (inverting)
Connector shell:
Chassis ground
Some equipment may have the polarity of the signals on pins 2 and 3 of the XLR connectors swapped over. Please refer to the user manuals of the other equipment in your signal chain to confirm whether this is the case.
If this is the case, it will not cause any damage, but it may reduce the quality of the stereo image, as well as the perceived attack of the bass. This situation is easily remedied by swapping the connections of pins 2 and 3 at either end of one of one set of balanced cables in the signal chain. Alternatively you can swap over the polarity
LOCATION
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