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GOLDMUND TELOS 153 - Universal Power Amplifier - 9 

SOUND QUALITY OPTIMIZATION 

 
 

Warm-up sonic effect 

If the power amplifier has not been powered on for a few days, the optimum sound quality 
is  reached  after  15  minutes.  This  delay  has  been  optimized  to  be  minimal  and  the  sonic 
quality when just powered on is much higher than other quality power amplifiers. 
 

 

Speaker polarity 

Even  if  you  have  an  absolute  phase  inverter  on  your  preamplifier,  and  even  if  you  have 
carefully selected the proper line phase (see next section), there is a possibility to increase 
the sonic quality of your speakers again by reverting the polarity of each speaker cable at 
amplifier  termination.  But  since  the  line  phase  and  the  speaker  polarity  interfere  to  each 
other,  you  have  to  experiment  carefully  with  all  the  combinations  before  picking  the  right 
one.  
If your preamplifier has an absolute phase inverter, this will interfere too. If it does not have 
an  absolute  phase  inverter,  do  not  forget  the  result  will  depend  on  the  source,  as  most 
records and CDs have been r

ecorded without care for the absolute phase. Be patient… 

 

Mains line phase inversion 

The sonic quality of your Goldmund Telos 153 can be greatly improved if the mains AC line 
is  properly  connected.  Try  to  invert  the  AC  plugs  of  both  your  amplifiers,  using  special 
adapters. 
 

We recommend that you try this carefully. You must do it in combination with the 
speaker polarity and/or with absolute phase switching to be sure of the best result. 
 
 
 
 
 
 
 
 

 

Summary of Contents for TELOS 153

Page 1: ...USER MANUAL GOLDMUND TELOS 153 3 channel Power Amplifier...

Page 2: ...was founded in 1978 and has ever since been dedicated to the accurate reproduction of sound and image At Goldmund we strive to lead in the creation development and manufacture of the industry s most...

Page 3: ...f Contents 1 UNPACKING 5 2 AMPLIFIER LOCATION COOLING 6 3 LINE VOLTAGE ADJUSTMENTS 7 4 CONNECTIONS 8 5 AMPLIFIER CONTROLS 8 6 SOUND QUALITY OPTIMIZATION 9 7 SAFETY AND PRECAUTIONS 10 8 MAINTENANCE 10...

Page 4: ...od and applied These extremely high quality amplifiers possess new technical features which are a necessity for accurate sound reproduction in the best audio systems Only careful installation and use...

Page 5: ...transport the amplifier at a later date ATTENTION If you need to return the Telos 153 to the factory or to your local representative for a warranty repair please note that it must be repacked in the...

Page 6: ...ze the effect of the built in Mechanical Grounding construction the Telos 153 can be located on the floor or on other very strong supports if they offer rigid transmission to the floor The Telos 153 i...

Page 7: ...stment ATTENTION The Goldmund Telos 153 amplifier will function properly for main line voltages indicated page 11 see rubric Power for more details If your main line is usually out of the tolerance or...

Page 8: ...r terminal are the same polarity The amplifier is non inverting in phase 5 AMPLIFIER CONTROLS On the front plate of the Goldmund Telos 153 amplifier you will find only one POWER key As soon as the amp...

Page 9: ...ble at amplifier termination But since the line phase and the speaker polarity interfere to each other you have to experiment carefully with all the combinations before picking the right one If your p...

Page 10: ...e heat Short circuits are not covered by the warranty ATTENTION the Goldmund Telos 153 is an extremely high speed amplifier Any bad ground connection can generate high frequency oscillations which are...

Page 11: ...se socket 3 digital input RCA connectors 3 pairs of output speaker connectors left and right GROUNDING Separated ground and earth signal Connection between earth and ground to cancel all ground loops...

Page 12: ...ND WEIGHT 385W x 310D x 220H mm Weight 25kg WARRANTY 3 years parts and labor Information and product specifications contained in this manual are subject to change without prior notice Updated versions...

Page 13: ...e the appliance so that its location or position does not interfere with its proper ventilation 8 Heat Site the appliance away from heat sources such as radiators heaters stoves or other appliances in...

Page 14: ...provide some protection against voltage surges and static build up In the USA see article 810 of the National Electrical Code ANSI NFPA 70 concerning installation requirements 16 Unplug this apparatus...

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