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4    

1. INTRODUCTION 

 
 

1.1. WHAT MAKES OCTAVE AMPLIFIERS SPECIAL? 

 

Sound 

The design goal of OCTAVE amplifiers is honest, natural sound reproduction. 
The sound characteristics of an amplifier are derived from the sum of all its parts. 
Tubes themselves do not only guarantee high quality sound. 
This means that a high degree of technical skill must be applied to optimizing 
every detail in order to design a reliable amplifier that will maintain its character-
istics over time and that will convince the critical listener over the long term that 
its reproduction of music is both honest and natural

 

Amplifier design 

The frequency range and output resistance limitations of classic tube designs 
are  evident  as  soon  as  you  connect  the  amplifiers.  These  designs  often  only 
perform to their full potential when they are used with special power Amplifiers. 
OCTAVE amplification and power supply technology has largely overcome these 
well-known problems. Thanks to their unique output stage design, they will main-
tain their optimum sound quality with virtually any amplifier. 

C  
monitoring 

OCTAVE employs the latest electronic circuit designs to create the best possible 
operating conditions for the tubes, and thus for the amplifier itself. 

 

OCTAVE tube technology 

 

 

OCTAVE amplifiers are equipped with a proprietary control and monitoring sys-
tem we call 

Power Management

. This is an “electronic brain” within the amp 

that regulates and controls all of the amplifier's functions. It includes soft start 
electronics that gently increase the heater and supply voltage to minimize com-
ponent wear. In the event of a problem, the Power Management’s 

protection 

system

 disconnects the unit from the power supply. Power Management helps 

us to achieve a completely consistent sound while at the same time ensuring the 
total reliability of our products.

 

Hand built 

OCTAVE amplifiers are hand built and individually 100% tested. They are de-
signed and developed by Andreas Hofmann. The company has its own winding 
department, in which all transformers are especially custom-wound for each am-
plifier. 

Made in Ger-
many 

OCTAVE amplifiers are 100% built in Germany. Our employees are highly qual-
ified and committed. We work closely with local mechanical suppliers. The hard-
ware components are all manufactured on modern CNC machines. We use only 
the best, most durable electronic components. We can repair all Octave amplifi-
ers, no matter how old they are. 

 

 

Power 

Management

Amp 

sound

Power  

additional 

functions

Содержание Jubilee

Страница 1: ...Jubilee Preamp Owner s Manual English...

Страница 2: ...rs As a result achieving improved amplifier sound quality requires greater levels of technical innova tion than ever before OCTAVE specializes in the ongoing development of upgradeable circuit designs...

Страница 3: ...2...

Страница 4: ...peration 4 1 Jubilee preamplifier front panel 10 4 2 Jubilee preamplifier top view 11 5 Connections 5 1 Rear panel Jubilee preamplifier 12 5 2 Rear panel Jubilee power supply 14 6 Remote Control for v...

Страница 5: ...he best possible operating conditions for the tubes and thus for the amplifier itself OCTAVE tube technology OCTAVE amplifiers are equipped with a proprietary control and monitoring sys tem we call Po...

Страница 6: ...interference and hum which is particularly critical when it comes to complex multi amp combinations connected via balanced inputs The low impedance output is yet another feature designed to enhance th...

Страница 7: ...es should also only be replaced by a qualified technician Always replace fuses with ones of the same type and rating If your amplifier re quires servicing please ship or take your equipment directly t...

Страница 8: ...ght Do not operate your OCTAVE amplifier near flammable materials gases or vapors Avoid areas where there may be heavy accumulations of dust or where the amplifier may be subject to mechan ical vibrat...

Страница 9: ...onnecting your source components and information on pin connections in Section 4 1 Connect the cables from your signal sources such as CD player to the appropriate inputs XLR or RCA CINCH phono on you...

Страница 10: ...Running in Tube equipment generally takes about three months to run in and start sounding its best Daily use is useful during this period but it is not necessary to leave the equipment on contin uous...

Страница 11: ...en the gain switch on the top of the preamp is set to gain low Tape 1 Playback of recorder connected to the Tape 1 input Source Playback of the source that has been selected with the input selector kn...

Страница 12: ...turns off The gain and phase switches should not be operated at the same time or immediately after each other as this could cause cracking noises through your system PHASE SWITCH Phase switching of t...

Страница 13: ...er XLR or RCA CINCH can be used at a time The PHONO inputs are not suitable for use with a turntable without an external phono preamplifier GND GROUND Additional ground connection for external units l...

Страница 14: ...r AUX input RCA CINCH Additional line level input for other sources CD input unbalanced RCA CINCH Additional input for CD player Tape inputs outputs Analogue inputs outputs for two recording devices D...

Страница 15: ...the power supply with the Jubilee preamp before you connect the power supply to the mains Fuse holder Warning Fuses should be changed only by a qualified technician 5 x 20 mm IEC standard Slow blow t...

Страница 16: ...ork after changing the batteries remove the new batteries and wait for the minimum of 30 minutes After half an hour you can insert the new batteries again and the remote control should work 3 Mount th...

Страница 17: ...sthetic to drill a hole in the Jubilee front panel we decided to use a solution with an external receiver Procedure 1 Connect the receiver with the plug on the rear panel 2 Put the receiver wherever y...

Страница 18: ...with equal systems The systems of tube 27 28 must be matched to less than 5 In position 27 the use of the genuine special tube E80CC is allowed The use of this tube is only in this position practical...

Страница 19: ...10 minutes to cool down 3 The Jubilee s automatic discharge system will discharge the power supply capacitors The red LED 31 will be lit during this time see Tube Layout Section 6 1 To avoid an elect...

Страница 20: ...low tolerance fixed resistors the channel tolerance across the entire control range remains under 0 1 dB The hard gold plated contacts on the switch have an extremely low transfer resistance and thus...

Страница 21: ...e knob 2 POSSIBLE CAUSES Input selector knob or mode selector knob not set correctly REMEDY Check the setting of the Input Selector 3 and Mode Selector knob 1 POSSIBLE CAUSES Power amplifiers or sourc...

Страница 22: ...n the other Recording equipment reel to reel cassette CD or DAT recorder with a faulty input or lead can overload the Record output and cause an imbal ance between the left and right channels REMEDY C...

Страница 23: ...Hz Crosstalk rejection between inputs 86 dB 10 kHz Crosstalk rejection tape play record 98 dB 10 kHz Input impedance RCA CINCH 100 kOhm Input impedance XLR 2 kOhm Output impedance 33 Ohms RCA CINCH 2...

Страница 24: ...23 10 SPECIFICATION 10 2 DIMENSIONS Dimensions Power Supply in mm 152 220 480 ca 530 152...

Страница 25: ...24 10 SPECIFICATION 10 2 DIMENSIONS Dimensions Jubilee Preamplifier in mm 480 ca 560 152...

Страница 26: ...AGRAMS Frequency response Extremely linear frequency response No fall in level at lowest bass frequencies Distortion spectrum Distortion spectrum at 1 kHz only second harmonic k2 is discernible no res...

Страница 27: ...26...

Страница 28: ...specifications in pursuit of better OCTAVE logo is a registered trade mark of Andreas Hofmann Copyright byAndreas Hofmann OCTAVEAUDIO T 49 0 7248 3278 ANDREAS HOFMANN F 49 0 7248 3279 REUTAECKERSTR 5...

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