Octave JUBILEE 300 B Owner's Manual
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Octave JUBILEE 300 B Owner's Manual

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JUBILEE 300 B
Owner's Manual
English

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Summary of Contents for Octave JUBILEE 300 B

  • Page 1 JUBILEE 300 B Owner's Manual English...

  • Page 2: Introduction

    Congratulations and thank you for choosing OCTAVE’s Single Ended Mono Power Amplifiers JUBILEE 300 B With the JUBILEE 300 B you have purchased the latest and most advanced development from our company. You often hear people claim that tube amplifier design has not progressed for years. The operating principles of tubes have indeed been documented extensively and are well known to amplifier designers.

  • Page 4: Table Of Contents

    CONTENTS Page Introduction ........................ Description of the JUBILEE 300 B ................Safety instructions ....................2.1. Before you begin ......................2.2. Placement ........................2.3. Warranty ........................Getting started ......................3.1. Unpacking, package contents ..................3.2. Removing the grille ..................... 3.3. Installing the power tubes ...................

  • Page 5: Description Of The Jubilee 300 B

    Octave amplifiers. What if Octave’s tube amplifier know-how was utilized in the development of a 300 B single-ended triode output stage? A concept that is said to have legendary sonic qualities. We have often been asked why we haven’t developed a 300 B single ended power amp, even though this amplifier...

  • Page 6: Safety Instructions

    Defective fuses should also only be replaced 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.

  • Page 7: Placement

    2. SAFETY INSTRUCTIONS 2.2. Placement Location OCTAVE equipment is designed strictly for use in a dry domestic environment. Do not use it in  open air or in damp environments! Never place plants or liquid-filled containers on your amplifier. Take care that objects do not fall ...

  • Page 8: Getting Started

    3. GETTING STARTED 3.1. Unpacking, package contents Scope of delivery 2 x tube mono power amplifier JUBILEE 300 B Single Ended. 2 x set of 3 pc power tubes 300 B. Power cord. Allen key size 2, to remove the cover and the transportation handles.

  • Page 9: Installing The Power Tubes

    MED is the default position for almost all versions of the 300 B. After a few minutes start-up time, the JUBILEE 300 B is ready for use, the BIAS meter (5) then shows e.g. at position V 1 of the tube selector (3) the value 50 +/-10%.

  • Page 10: Switching On For The First Time: Checking The Tubes (Bias)

    Make sure that the switch settings of the top front and the rear panel (BIAS and input select)  correspond to the desired settings. Switch on the JUBILEE 300 B using the mains power switch and wait a few minutes. Now  you can play music.

  • Page 11: The Operation

    4. THE OPERATION 4.1. Top front JUBILEE 300 B Legend 0 = off; 1 = on  Mains Power Switch  A LED in 4 corresponding to the input selector lights up.  BIAS Idle current selector BIAS Low: for low playback. Idle current = 25-30 mA.

  • Page 12: Rear Panel Jubilee 300 B

    4. THE OPERATION 4.2. Rear panel JUBILEE 300 B Legend  RCA-Input RCA Line Level Input.  Balanced Line Level Input XLR-Input Pin 1: Ground, Pin 2: +, Pin 3 –  RCA - XLR – Muting Input Selector In Position Muting the Inputs are switched OFF (see chapter 5.3.).

  • Page 13: Advanced Functions

    A fault in one of the preamp tubes which overloads the output stage. Once the protection system has cut in, the only way you can turn the JUBILEE 300 B back on,- is to turn the on/off switch off and then on again. Allow the unit two minutes to cool down before switching it back on.

  • Page 14: Ecomode (Power Saving Mode)

    Note: If you switch the JUBILEE 300 B on with Ecomode active, it will go through the start procedure. If it fails to detect a music signal, it will turn down the BIAS after 10 minutes. Ecomode is not the same...

  • Page 15: Tubes

    6. TUBES 6.1. Removing the grille Operation of the device without protective grille is not permitted and is at your own risk! See chapter 3.2. 6.2. Tube layout Output tubes: V1 – V3: 300 B as standard Driver tubes: ECC82 (= ECC 802, 12 AU 7, 5814, 6189) EF 800 (EF 184) To replace the driver tubes V4 and V5, the center tube cover plate must be removed.

  • Page 16: Bias Adjustment And Bias Meter

    B, which makes it possible to control the BIAS without additional measuring devices. Due to the automatic BIAS adjustment of the JUBILEE 300 B circuit, the value 50 / +/- 15 % should always be displayed for selected 300 B tubes in the BIAS MED setting. A higher match of the idle current is not necessary for sound and technical reasons.

  • Page 17: Replacing The Tubes

    Now the protective grille can be put back on. 6.5. Running in All OCTAVE equipment is subject to a 48-hour continuous operation test at the factory to burn in the tubes and the unit. The tubes are preselected and matched for the use in each particular model. The Output tubes have a match code on the socket.

  • Page 18: Options

    The LED will light in ON position only when the trigger voltage applied. For remote operation "ON", the mains power switch of the JUBILEE 300 B must be set to 1 (ON). This means, that even with activated remote switching ON, the power amplifier can be switched OFF with the mains power switch.

  • Page 19: Bi-Amping Package (Not Retrofittable)

    30 pure Class A watt amplifiers will have limits. If you wish to enjoy the sound of the JUBILEE 300 B in very large rooms or with power-hungry speakers, it is often beneficial to control the bass region by utilizing a separate power amplifier for the low frequencies.

  • Page 20: Troubleshooting

    Although the JUBILEE 300 B is grounded, its signal ground is a "floating" ground, which means that the JUBILEE 300 B cannot itself create ground loops. Hum can only be caused when it is connected to other units of equipment.

  • Page 21: Specifications, Diagrams

    9. SPECIFICATIONS AND DIMENSIONS Technical Specifications Output power: between 15 and 30 W selectable Power bandwidth: 20 Hz - 50 kHz / - 3 dB Gain low : 19.5 dB into 4 ohms; 22.5 dB into 8 ohms Gain high : 30 dB into 4 ohms; 33 dB into 8 ohms Gain: Default Setting is gain LOW Gain High >...
  • Page 22 Frequency response of the JUBILEE 300 B (green) and a classic SE amplifier (orange) The frequency response of the JUBILEE 300 B is flat down to 20 Hz in the opposite to the low frequency roll off of a classic SE design.

  • Page 23: Frequently Asked Questions (Faq)

    10 years. Does the JUBILEE 300 B have to have all of its tubes fitted? In principle, the JUBILEE 300 B will also operate without output tubes. Of course, it is not possible to play music under these circumstances.
  • Page 24 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 whole or part is prohibited. OCTAVE AUDIO Germany www.octave.de...

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