Octave HP 300 MK2 Manual
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Octave HP 300 MK2 Manual

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Summary of Contents for Octave HP 300 MK2

  • Page 1 HP 300 MK2...
  • Page 2 We have specialized in tube amplification for the past 20 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. We hope you will enjoy many hours of wonderful music with your OCTAVE amplifier. Andreas Hofmann...

  • Page 3: Table Of Contents

    Tube service life ................Option: Phono MM/MC..............10.1. The role of the phono preamplifier ..........10.2. The phono section of the HP 300 MK2 ........10.3. Guidelines for connecting to the phono section ......10.4. Adjusting the MC input ..............

  • Page 4: Octave Technology

    Control + 3. OCTAVE employs the latest electronic circuit designs to create the best Monitoring possible operating conditions for the tubes, and thus for the amplifier itself. OCTAVE Tube Technology...

  • Page 5: Discription

    An additional function of the power supply is the protection circuit, which releases the output of the HP 300 MK2 by a relay with a time delay or disconnects it immediately in case of a malfunction. Click-interferences etc. caused by the power supply are therefore absolutely ruled out.

  • Page 6: Safety Instructions

    2. SAFETY INSTRUCTIONS 2.1. Before you begin Before using your HP 300 MK2, please check your local line voltage and pay attention to this manual 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.

  • Page 7: 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 that objects do not fall or liquids are not spilled into the enclosure.

  • Page 8: Setting Up

    (positive on the amplifier to positive on the speakers). Check that the amplifier is switched off before connecting the power cable to the wall socket. The stand by/power switch for the HP 300 MK2 is located on the front panel (see Chapter 4, Operation) Check that the volume control is not set at maximum before playing music through the ...

  • Page 9: Operation: Front Panel

    4. OPERATION - Front panel Phono Power Operate Tuner Source Mute Tape Bypass Stand By CD sym Gain -6 dB HP 300 MK 2  Main power push button switch  The LED above the mode rotary switch is burning when the unit is switched on. ...
  • Page 10 In this position the outputs of the preamp are muted. This position is recommended when new units are to be connected or disconnected from the inputs of the HP 300 MK2 This way, you avoid disturbances during the connection at the output of the preamplifier. The amplifier is working at once after switching the function switch to the top position, in the opposite to the stand by position of the mode switch.

  • Page 11: Connections: Rear Panel

    OUT 2 and the balanced output. The single ended OUT 1 is furthermore connected to the volume regulated line stage of the HP 300 MK2 amplifying the AUX signal. This output can be used for additional earphone amps or similar.

  • Page 12: Advanced Function: The Bypass Mode

    How it works The bypass / multi channel circuit of the HP 300 MK2 allows the use of the two way system to be a part of the multi channel system, normally a 5 + 1 system. The two way system can be used for the Front main channels.

  • Page 13: The Hp 300 Mk2 In The Bypass Mode

    In the multi channel mode the common volume of the multi channel system has to be adjusted at the multi channel source, eg the DVD player, TV, etc. In the bypass mode the volume control of the HP 300 MK2 is out of function except the output 1. Special features: The tape record monitor function is also available in bypass mode.

  • Page 14: The Hp 300 Mk2 In The Two Channel Mode

    6. ADVANCED FUNCTION: The bypass mode 6.2. The HP 300 MK2 in the two channel mode Two channel unit Multi channel unit CD /SACD, Tuner, DVD-Player etc. Tape etc. Front L Front R CD / TU etc. CD / TU etc.

  • Page 15: Advanced Function: Connecting A Processor

    The processor should be connected in the analog way with his analog input to the TAPE record outputs of the HP 300 MK2. The analog outputs of the processor have to be connected to the TAPE-Play inputs of the HP 300 MK2. In this way the processor is receiving the selected signal of the HP 300 MK2 input.

  • Page 16: Tubes

    9. TUBES 9.1. Tube layout power supply line- phono MC- board board board Before opening the cover it is mandatory to remove the power cord from the mains power inlet. tubes used also available under this discription Line board  ECC 82 (E 82 CC / ECC 802 S / 12 AU 7 / 5814 A) ...

  • Page 17: Replacing Tubes

    9. Tubes 9.2. Replacing tubes Please use only original OCTAVE replacement tubes. These have been selected and tested for use in our amplifiers. Important! Changing tubes is a job for a qualified technician! Switch off the preamplifier, unplug the power cord from the wall socket, and allow the unit 10 minutes to cool down.

  • Page 18: Option: Phono Mm/Mc

    Plug the RCA phono cable from your turntable into the appropriate (phono MC ) input on your HP 300 MK2. Turn the input selector to phono Connect the earth cable supplied with your turntable to the GND connection on the ...

  • Page 19: Adjusting The Mc Input

    10. PHONO MC OPTION 10.4. Adjusting the MC input Before you can adjust the MC input, you need to take off the cover by removing the M 3 screws, (12 pc.) Before opening the cover it is mandatory to remove the power cord from the mains power inlet.
  • Page 20 10. PHONO MC OPTION 10.4. Adjusting the MC input (C) Setting the MC-Load-Impedance 8 Sliding switches direction front panel Adjustment range Left channel Right channel Switch 1 – 4 Switch 5 - 8 Switch Switch Switch Resistance Switch Switch Resistance option position (ohms)

  • Page 21: Troubleshooting

    This device has no adverse affect on the sound or picture quality of tuners or TVs. The HP 300 MK2 is not earthed and cannot therefore cause ground loops.  Clicks and pops Older fridges and 12 V halogen lamps can cause cracking through the loudspeakers when they switch on and off.

  • Page 22: Technical Data And Dimensions

    12. TECHNICAL DATA AND DIMENSIONS In- and Outputs Inputs 5 x RCA (one is phono MC with the option phono otherwise its a line level input), 1 x XLR Bypass-Function for input AUX Outputs 2 x RCA, 1 x XLR, 1 x Tape Record (RCA) Line stage Gain high 17,5 dB = 7,4...

  • Page 23: Specification

    13. SPECIFICATION Features  The HP 300 MK2MKII is fitted as standard with two cinch outputs, one XLR output and one XLR input.  Gain of the line amplifier and the phono board also is switchable to adjust the overall gain of the preamplifier - amplifier combination ...
  • Page 24 13. SPECIFICATION Diagrams Noise spectrum of line stage, 4 V output at 1 kHz. The low level of harmonic distortion and low noise level are clearly visible. There are no hum components at 50 Hz and 100 Hz. Frequency response of the phono stage with and without subsonic filter...
  • Page 25 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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