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Viola Systems Symphony, Owner'S Manual

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SYMPHONY POWER AMPLIFIER 

OWNER’S MANUAL 

 

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© Viola Audio La boratories 2004, 2005 

 
 

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.Viola labs.com.  

 

 

 
 

 

 

P/N: 91-symphonymanual                                                            Revision: 01                                        

 

   

Summary of Contents for Symphony

Page 1: ...AL Viola Audio La boratories 2004 2005 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 symphonymanual Revision 01 ...

Page 2: ...tor Pin Assignment 5 Speaker Cable Connection 6 o Cables and Connectors 6 o Single Speaker Cable Connection 6 o Bi Wire Connection 7 o Bridge Connection 8 Bi amplification 9 AC Power Cable Connection 10 Switching on for the First Time 10 Breaking In 10 Care and Cleaning 11 Fuses 11 Troubleshooting 12 Warranty 13 Service 14 Contacting VIOLA 14 Specifications 16 ...

Page 3: ...ins before connecting or dis connecting any cables or when cleaning any component 5 NEVER operate this unit with any covers removed Dangerous voltages may exist within the unit even when it is disconnected from the mains supply 6 We do not recommend the use AC extension cords with this product If it is necessary to use an extension cord please ensure that it meets safety standards in your country ...

Page 4: ...straight as possible and use your leg muscles to lift 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 vi...

Page 5: ...s as heat when idling i e no input signal It is normal and perfectly safe for it to run somewhat warm to the touch XLR CONNECTOR PIN ASSIGNMENT The Symphony is fitted with XLR and Fischer type balanced inputs The pin assignments of the Symphony 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 ...

Page 6: ... The lugs should be either soldered or crimped to the speaker cable the latter is preferred We do not recommend the use of bare wire to connect the speaker cable to the binding post This produces an inferior connection that degrades with time as the bare conductors become tarnished SINGLE SPEAKER CABLE CONNECTION In this case you will only use one pair of binding posts on each channel of the ampli...

Page 7: ...peaker cables Starting with the left channel connect lower red binding post on the rear of the Symphony to the input terminal marked or colored red on the left speaker s LF input Connect the lower black binding p ost on the rear of the Symphony to the input terminal marked or colored black on the left speaker s LF input Connect upper red binding post on the rear of the Symphony to the input termin...

Page 8: ...s This works by feeding the input signal directly into one channel whilst feeding an anti phase version of the same signal to the input of the other channel The speaker is connected between the High terminals of the two outputs Producing the anti phase signal for the second channel is easy as the input connectors of each channel are wired in parallel It simply involves connecting a cable from the ...

Page 9: ...t on the rear of the Symphony which ever is convenient to the input terminal marked or colored black on the speaker These connections are shown in figure 3 below Figure 3 Bridge mode connection BI AMPLIFICATION Bi amplification uses two stereo amp lifiers to power a single pair of loudspeakers One amplifier is used for each loudspeaker with one channel driving the L F unit and the other the mid H ...

Page 10: ...he player and press play If the wall outlet you are using for the Symphony is switchable switch it on now Press the power switch on the front panel When the unit starts this will glow green Allow the unit to stabilize for 2 minutes then slowly increase the volume on the pre amplifier to a comfortable level The unit is now ready for use If you experience any problems please refer to the TROUBLE SHO...

Page 11: ...rear panel one for each side of the mains supply If you suspect that either of the fuses has blown follow the procedure below Disconnect the amplifier from the mains supply Remove the fuses Check the fuses with a continuity tester and replace any blown fuses with one of the rating and type shown below Using a fuse of the incorrect type or rating may create a safety hazard or cause damage to the un...

Page 12: ...s power on the AC wall socket by connecting another piece of equipment that is known to work to the socket Check the mains fuses as shown in the MAINS FUSES section of this manual 2 No sound and the front panel LED is lit Check all the signal wiring in the system Check that all the units feeding the amplifier are switched on Check that any input selector and other relevant switches are set appropr...

Page 13: ...comes on and stays on the fault was most likely due to a n intermittent short on either channel s speaker cables and these should be inspected carefully to ensure that there is no danger of this re occurring If it the amplifier shuts down check the speaker cables for a short If these appear to be OK there may be a fault with the speaker and you should contact the dealer or maker directly for assis...

Page 14: ...warranty during years 2 to 5 the customer is responsible for paying the shipping charges back to the factory A VIOLA approved shipping company must be used Providing this condition is met VIOLA will pay the cost of shipping the units back to the customer VIOLA will not pay freight costs if units are returned without a RA number or if no fault is found Customers are responsible for all freight char...

Page 15: ... 0 10 THD 0 1 20 kHz 200 watts Frequency Response 1W into 8 ohms 10Hz 20kHz 0 15 db 100k 3 db Power Bandwidth 5 Hz to 100 kHz 3dB points SN Ratio 105 db at 1 kHz 200W C weighted Gain 26 dB Input Impedance 1M Ohm 1M Ohm balanced Inputs Balanced XLR and Fischer Output Connections Binding post for spade terminals Power Consumption Approximately 225W at idle 1800W maximum Weight Amp lifier 120 lbs 55 ...

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