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2. SAFETY INSTRUCTIONS 

  

 

2.1. Before you begin 

 

Please read this Owner's Manual before you use 
the equipment for the first time. 

Operating the amplifier without its protective grille 
is dangerous and not recommended. 

 

In  case  of  emergency:  disconnect  the  plug 
from the mains supply. 

Never use an amplifier that is damaged or faulty. 
Make sure that it cannot be used until it has been 
repaired by a qualified service engineer.  
Make  sure  that  there  is  easy  access  to  the  IEC 
socket and power cord. 
 

Do not open the case 

There  are  dangerously  high  voltages  and  hot 
tubes  inside  this  equipment.  To  avoid  burns  or 
the  risk  of  electric  shock,  never  allow  anyone 
except  qualified  personnel  to  open  the  case  or 
remove the grille. 
 

Servicing and maintenance 

For  reasons  of  safety,  please  ensure  that 
servicing,  repairs  and  other  modifications  to 
OCTAVE  equipment  are  carried  out  only  by  a 
qualified  technician.  Fuses  should  be  also  be 
changed  only  by  a  qualified  technician.  Always 
replace  fuses  with  ones  of  the  same  type  and 
rating. If your amplifier requires servicing, please 
ship or take your equipment directly to OCTAVE 
or to one of our authorized service centers. 
 

Explanation of the warning symbols

 

 

 
 

The  lightning  flash  with 
arrowhead  symbol  within  an 
equilateral 

triangle 

is 

intended  to  alert  the  user  to 
the  presence  of  uninsulated 
'dangerous  voltages'  within 
the  product's  enclosure  that 
may 

be 

sufficient 

to 

constitute  a  risk  of  electric 
shock to persons. 
 
The exclamation point  within 
an  equilateral  tri-angle  is 
intended  to  alert  the  user  to 
important 

operating 

and 

maintenance instructions. 
 
 

Before connecting up 

Make  sure  that  the  voltage  of  your  amplifier 
matches with your electricity supply voltage.  
 

Grounding 

This  amplifier  is  a  protection  class  1  device 
(with an earth conductor). To exclude the risk of 
electric  shock  in  the  event  of  a  fault,  the  unit 
must  be  grounded.  Use  a  three-core  mains 
cable with a three-pin plug (supplied). 
 

Safety warning: Hot tubes

Warning:  Remove  the  protective  grille  at  your 
own  risk.  OCTAVE  cannot  accept  any 
responsibility for injuries caused by the removal 
of this grille.  
 

Warranty 

OCTAVE  can  only  guarantee  the  safety, 
reliability  and  performance  of  this  unit  if 
modifications  and  repairs  are  carried  out  by 
specialized  personnel  and  if  the  amplifier  is 
operated  in  accordance  with  the  instructions 
contained in this manual. 

 

 

 

 

 

 
 
 
 
 
 

 

Summary of Contents for JUBILEE MONO SE

Page 1: ...JUBILEE MONO SE Owner s Manual English...

Page 2: ......

Page 3: ...of amplifiers As a result achieving improved amplifier sound quality requires greater levels of technical innovation than ever before OCTAVE specializes in the ongoing devel opment of upgradeable cir...

Page 4: ...2...

Page 5: ...ns 16 5 1 Bias measurement facility 16 5 1 1 How the bias works 17 5 1 2 How to set the bias 17 5 2 The electronic protection system 18 5 3 Soft Start inrush current limitation 18 5 4 Power Pre Select...

Page 6: ...Together these measures deliver a supremely consistent sound quality and a dependability that is recognized as world class Manufacturing Every OCTAVE amplifier is 100 percent made in Germany Our prod...

Page 7: ...esponse and efficiency level of the speakers PENTODE DESIGN With the JUBILEE MONO SE power amplifiers Andreas Hofmann has gone one step further While they have the same power management and optimized...

Page 8: ...our equipment directly to OCTAVE or to one of our authorized service centers Explanation of the warning symbols The lightning flash with arrowhead symbol within an equilateral triangle is intended to...

Page 9: ...install your equipment in a cupboard or a shelf unit ensure that there is at least a twenty centimeter gap between the ventilation slots and the walls all around the amplifier The rear panel of cupboa...

Page 10: ...oving the cover 3 Octave cleaning Cloth and Soft Gloves 4 Owner s manual with declaration of quality 3 2 Removing the grille 1 Please don t connect the amp to the mains before the tubes are installed...

Page 11: ...e tubes from JUBI LEE MONO SE 1 to JUBILEE MONO SE 2 Insert the power tubes into their sockets Ensure that you correctly locate the anti rotation lug on each of the tubes Anti rotation recess in the t...

Page 12: ...the muting switch Pressing the muting button makes LED B slightly brighter It is not possible to play music during the start phase The Power Pre Selector switch should set to low the green LED C illu...

Page 13: ...ected the current to the power tubes is also reduced to nearly 0 Checking the bias of the tubes while the muting function is ON the reading of the display shows the value less than 100 of all tubes Th...

Page 14: ...12 4 OPERATING COMPONENTS 4 1 JUBILEE MONO SE rear panel...

Page 15: ...nected together to allow bi wiring of your system Input section The amplifier is equipped with an RCA and an XLR input You can select the appropriate input using the input toggle switch You can connec...

Page 16: ...14 4 OPERATING COMPONENTS 4 2 JUBILEE MONO SE top control panel...

Page 17: ...ing is useful when the power amplifier is to be used at low volume or as a specific reference setting during the activation phase for checking the correct operation of the unit and for checking the tu...

Page 18: ...16 5 ADVANCED FUNCTIONS 5 1 Bias measurement facility...

Page 19: ...in the display 2 Turn the bias measurement selector switch to position V 1 The meter in the display should read 950 1050 In case of misadjustment you have to adjust the value The corresponding bias re...

Page 20: ...on If possible identify and eliminate the cause of the problem see chapter 7 Troubleshooting If it is not clear what has caused the protec tion system to trip we recommend that you check the bias befo...

Page 21: ...ng the unit powered on The Ecomode is a safety and energy saving feature that is unique in our amplifier range Eco off The Ecomode electronic is off The JUBILEE MONO SE is permanent in operation Eco o...

Page 22: ...d be se lected but due to the separate bias regulators the selection grade is not critical Driver tubes V9 V11 ECC82 12 AU 7 V 9 Output stage driver V10 Main amplifier tube V11 Input tube The board is...

Page 23: ...pending on the type age and manufacturer of the tubes you may need to readjust the settings in the first few weeks 6 3 Tube service life Thanks to the protection circuits and soft start electronics th...

Page 24: ...at can cause a fatal electric shock if touched 1 Switch off the amplifier and disconnect the power cord Wait 20 minutes until the amplifier and the tubes have cooled down 2 Remove the right side panel...

Page 25: ...three pins are connected at both ends Switching interference Older fridges and 12 V halogen lamps can cause cracking through the loudspeakers when they switch on and off Solution the only solution is...

Page 26: ...uality type of construction and the materials used inside the tube the bias setting may be quite different after a number of years from that of a brand new tube To monitor this effect we have included...

Page 27: ...MS and 450W peak power into 4 ohms Frequency response 10Hz 80kHz 0 5 dB Total harmonic distortion 0 1 at 10W into 4 ohms Signal to noise ratio 103 dB Minimum load impedance 2 ohms Gain input sensitivi...

Page 28: ...with selected tubes Curve 2 Distortion curve with unselected tubes Curve 3 Distortion curve bias low Frequency response Between 10 Hz and 90 kHz the frequency response tolerance is within 0 3dB 0 01...

Page 29: ...00Hz is present THD between 30Hz and 20 kHz The total harmonic distortion curve is very linear increasing only slightly at the lowest frequencies This performance is only possible using a highly speci...

Page 30: ...arm the amplifier See chap 7 2 4 Is there a loss of sound quality as tubes age No Tubes normally sound the same throughout their service life Our soft start technology contributes greatly to extending...

Page 31: ...octave de We reserve the right to alter and improve the specifications in pursuit of better OCTAVE logo is a registered trade mark of Andreas Hofmann Copyright by Andreas Hofmann Reproduction in whol...

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