Octave v70se User Manual
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Octave v70se User Manual

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V 70 SE

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Summary of Contents for Octave v70se

  • Page 1 V 70 SE...

  • Page 2: Introduction

    10 years ago. These advances have been achieved through the application of the latest technological developments as they become available and affordable. OCTAVE has specialized in tube amplification for the past 25 years, during which time we have developed a number of innovative technologies that have earned us a reputation as one of the leaders in the field.

  • Page 3: Table Of Contents

    CONTENTS Page Introduction ....................Description of the V 70 SE ................Safety instructions ..................Before you begin ..................Placement ....................Warranty ....................... Getting started ....................Unpacking, package contents ..............Removing the grille ..................Installing the power tubes ................Switching on for the first time: the soft-start feature ........Checking the tubes (BIAS) ................

  • Page 4: Description Of The V 70 Se

    1. DESCRIPTION OF THE V 70 SE The new Octave V 70 SE integrated amplifier is a push-pull pentode design delivering 2 x 70 W RMS output power (into 4 ohm loads). As with all Octave models, all research and development (R&D) and production has been conducted exclusively in-house, and the amplifier is...

  • Page 5: Safety Instructions

    Servicing and maintenance For reasons of safety, please ensure that any servicing, repairs or other modifications to OCTAVE equipment are carried out only by a qualified technician. Always get an engineer to replace blown fuses with ones of the same type and rating.

  • Page 6: Placement

    2.2. Placement 1. Location OCTAVE equipment is designed strictly for use in a dry domestic environment. Do not use it in the open air or in damp environments! Never place plants or liquid-filled containers on your OCTAVE equipment. Take care to avoid dropping objects or spilling liquids into the case.

  • Page 7: Getting Started

    3. GETTING STARTED 3.1. Unpack and check the contents of the box. outer inside owner's manual and carton carton warranty card tube power cord remote compartment and tools control Package contents standard V 70 SE serial equipped with 6550 C power tubes 5 power tubes packed separately Power cord Remote control with owner's manual...

  • Page 8: Installing The Power Tubes

    In any case the Power LED (indicates that the unit is switched on) and the Soft-Start LED will be lit. The Soft-Start LED will extinguish a minute later once the unit has booted up. The V70SE is now ready for work.

  • Page 9: Checking The Tubes (Bias)

    3. GETTING STARTED 3.5. Checking the power tubes – setting the BIAS 4) Turn the mode selector knob clockwise to position 6 = BIAS. The input LEDs will extinguish. Pos 1 Pos 2 Tuner Aux 1 Pos 3 Pos 4 Aux 2 Pos 5 CD 2...

  • Page 10: Connection Options: Overview

    3. GETTING STARTED 3.7. Connection options: overview Speakers CD player with right left balanced output Additional line level analogue component, e.g. video Turntable Black Box Ecomode Phono Achtung! Black Box nur bei ausgeschaltetem Integrated amplifier V 70 SE Gerät anschließen bzw.

  • Page 11: Front Panel Controls

    4. CONTROLS – the front panel  Power switch 0 = off; 1 = on. Power LED and Soft-Start LED illuminate. The Soft- Start LED extinguishes after the start-up period of 50 seconds.  Input selector This is used to select the desired input signal. A green LED indicates the selected input on the display.
  • Page 12 4. CONTROLS – the front panel  BIAS adjustment BIAS regulators and corresponding LED array for each power tube.  Remote control receiver To ensure optimum operation of the IR remote control, do not cover this window.  Status indicators Power Indicates that the unit is switched on.

  • Page 13: Rear Panel Connections

    6. CONNECTIONS – the rear panel  Ecomode Ecomode Eco off: Ecomode automatic is off. Eco on: Ecomode automatic is on. Amp off: The power stage of the amplifier is off (see chap. 6.3.).  CD 1 CD line level input, RCA. Tuner line level input, RCA.
  • Page 14 6. CONNECTIONS – the rear panel Loudspeaker outputs Speaker connection terminals. Red = positive terminal, Black = negative terminal. The speaker negative terminal is connected to ground. (Super) Black Box The (Super) Black Box is an outboard power supply connection capacitance upgrade for the power amplifier section (see chapter 10).

  • Page 15: Advanced Functions And Connection Options

    6. ADVANCED FUNCTIONS 6.1. Protection The V 70 SE features a comprehensive electronic monitoring and protection system. This system will automatically switch off the V 70 SE if case of a fault occurring in the power section. The protection system has been designed to keep the unit safe from the consequences of overloads of any kind and to protect the output tubes from current surges.

  • Page 16: Ecomode

    6. ADVANCED FUNCTIONS 6.3. Ecomode The Ecomode serves to reduce heat and unnecessary power consumption when the unit is switched on but not in use. After 9 minutes without receiving signal, the V 70 SE Ecomode is activated, turning down the power. In this “sleep” mode, the V 70 SE draws less than 20 W Idle current.

  • Page 17: Front Channel

    The figures for each power amplifier should be within 2 dB of each other. The ideal gain of the external power amplifier is 25 dB / +/-2 Configuration of the V 70 SE in bi-amped systems Source component such as V70SE as CD player Pre out central control unit Speaker...

  • Page 18: Tubes

    7. TUBES 7.1. Removing the grille See chapter 3.2. 7.2. Tube layout Output tubes: V1 - V4: 6550 C standard V1 + V2 left channel V3 + V4 right channel Driver tubes: ECC83 (12 AX 7) V6 + V7 ECC81 (E 81CC, 12AT 7) alternatively 2 x ECC 82 The pentode output stage topology of the V 70 SE makes it possible to use of a variety of output tubes.

  • Page 19: Bias Measurement Facility

    7. TUBES 7.3. THE BIAS MEASUREMENT SYSTEM The BIAS measurement facility makes it easy for you to check and adjust the idle current of the output tubes. Getting the BIAS setting right for all four tubes is critical for both the sound of the power amplifier section and for the service life of the tubes.
  • Page 20 7. TUBES There is an upper adjustment limit to the "high" BIAS setting, which is indicated by the green and red LEDs lighting up at the same time, and a lower limit to the "low setting, where the yellow and green LEDs light up.

  • Page 21: Replacing The Tubes

    You should adjust these tubes after about 20 minutes. 7.5. Running in All OCTAVE equipment is subject to a 48-hour soak test at the factory to burn in the tubes. The tubes are preselected for use in each particular model.

  • Page 22: The Programmable Remote Control

    MC and MM systems. Specification: Input impedance: MC 150 ohm, MM 47k ohm Signal-to-noise ratio MC 73 dB, MM 85 dB Input sensitivity MC 0.5 mV, MM 4 mV Subsonic filter -12 dB/octave, 20 Hz cut off frequency...

  • Page 23: Using Black Box Or Super Black Box

    OCTAVE, with the Black Box technology, offers an instrument for optimizing the OCTAVE amplifier in respect to the speaker. This flexibility is a unique feature of the OCTAVE brand. The dynamic and tonal stability of an amplifier is strongly dependent upon the stability and capacity of the power supply, therefore the Black Box and Super Black Box were developed as external upgrades to the OCTAVE amplifiers’...

  • Page 24: The Super Black Box Option

    12. USING THE (SUPER) BLACK BOX 12.2. Super Black Box option Operation  Blue power LED The blue "power" LED illuminates when the power amplifier (or integrated amplifier) is switched on via the amplifier's power on/off switch.  Yellow unload LED The yellow "unload"...

  • Page 25: Troubleshooting

    11. TROUBLESHOOTING 11.1. Faults caused by external issues Buzzing and hum in the speakers  Possible cause: multiple grounds Hum in an audio system is often caused by several system components having their own separate grounds. It is particularly common in systems containing tuners, VCRs or satellite receivers, as these components are connected to an aerial.
  • Page 26 11. TROUBLESHOOTING  Possible cause: induction Another possible cause of hum could be the stray field of a transformer generating interference in a device or cable. You can easily diagnose this problem by switching off the problem component. To fix the problem To reduce this kind of interference, move the transformer/component or the affected component/cable to a different location.

  • Page 27: Faults Caused By Tubes

    (except for output tubes, which we are unable to control 100 percent) to virtually zero. OCTAVE equipment will achieve a service life of 10 to 15 years without needing to be serviced. We feel that this is particularly important aspect of tube equipment design, as many preconceptions still exist about the technology's durability and long-term stability.
  • Page 28 11. TROUBLESHOOTING Tube faults that trip the protection system The protection system continuously measures the current flowing into the four power tubes. Depending on the problem, this current may exceed a specified limit and cause the protection system to switch the power stage off. The red protection LED will light up to show that this has happened.

  • Page 29: Specifications And Dimensions

    12. SPECIFICATIONS AND DIMENSIONS In- and Outputs: Inputs: 5 x RCA, 1 x XLR 1 x RCA Home Theatre Bypass input Outputs: 1 x RCA Record Output, 1 x Regulated Preamplifier Output, 1 x Loudspeaker Output Power amplifier Output Configuration: Push Pull, advanced Pentode Mode, Grid 2 Voltage 300 V, Idle Current Tubes 28 mA - BIAS Low, 34 mA - BIAS High.
  • Page 30 12. SPECIFICATIONS AND DIMENSIONS 150 mm 451 mm 415 mm approx. 490 mm with Black Box connection Diagrams THD at 4V into 4 ohms from 30 Hz to 20 kHz at a variety of BIAS settings Diagramm 1 Curve 1: BIAS adjusted correctly Curve 2: BIAS 10% out...
  • Page 31 12. SPECIFICATIONS AND DIMENSIONS Graph 2: Frequency response, 5 W into 4 ohms Audio Precision Frequency Response V 70 SE 5 V / 4 Ohm The frequency response curve clearly shows the low frequency extension of the V 70 SE linear to 10 Hz The loss at 20 Hz is less than 0,2 dB Graph 3: Noise spectrum A-A FFT SPECTRUM ANALYSIS V 70 SE 5 V / 4 Ohm...

  • Page 32: Frequently Asked Questions (Faq)

    Can you operate the V 70 SE when no loudspeakers are connected? Yes. The V70SE, like all OCTAVE amplifiers, is fully protected against open circuit operation, i.e. the amplifier will come to no harm if it is operated without loudspeakers connected.
  • Page 33 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. edited EN2010 OCTAVE AUDIO Germany...

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