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Summary of Contents for Octave HP 300 SE
- Page 1 HP 300 SE Owner's Manual English...
- Page 2 We have specialized in tube amplification for the past 30 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 preamplifier. Andreas Hofmann...
- Page 4 Tube service life ................Option: Phono MM/MC ..............10.1. The role of the Phono preamplifier ..........10.2. The Phono section of the HP 300 SE........... 10.3. Guidelines for connecting to the Phono section ......10.4. Adjusting the MC input ..............
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Page 5: Octave Technology
1.1. Differences to other tube amplifiers Sound 1. 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 do not themselves guarantee high quality sound. - Page 6 An additional function of the power supply is the protection circuit, which releases the output of the HP 300 SE 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.
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Page 7: Safety Instructions
2. SAFETY INSTRUCTIONS 2.1. Before you begin Before using your HP 300 SE, 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 technician. -
Page 8: 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 9: Setting Up
If you switch from high to low or vice versa the muting time will start again 3.3. Running in All OCTAVE equipment is subject to a 48-hour continuous run-in period at the factory to break in the unit. The tubes are individually selected for use in each particular model. The sound quality of tube equipment improves throughout the initial running-in period of up to three month. -
Page 10: Operation: Front Panel
The Muting LED lights up. The Output is shorted to ground in this position. Playback is not possible. Muting is recommended while connecting source units to the HP 300 SE to avoid disturbances, especially in case a unit shall be connected via RCA. - Page 11 5. CONNECTIONS: Rear panel XLR 2 Balanced Input for balanced sources like CD-player etc. In Position Bypass – XLR this is the Home Theatre Input XLR 1 Balanced Input for balanced sources like CD-player etc. GND (Ground)-connector Suggested connection for the ground cable of your turntable.
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Page 12: Connections: Rear Panel
The Ground Lift allows the separation of the ground of the Balanced Output and the ground of the HP 300 SE. This reduces effectively ground noise and ground hum loops. In position I this two ground lines are connected together with a resistance of 3,3 Ohm. In position 0 the connection has a resistance of 2.2 Meg Ohm;... -
Page 13: External Power Supply
6. External Power Supply Power Supply front Mains power switch, I = On Control LED Power Supply rear panel Mains Input, IEC receptacle Serial number and mains voltage Connecting cable with plug connector... -
Page 14: Advanced Function: The Bypass Mode
HP 300 SE. The bypass / multi-channel circuit of the HP 300 SE 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 15 7. ADVANCED FUNCTION: The bypass mode In the multi-channel mode the 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 HP300SE is out of function.
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Page 16: Remote Control For Volume
8. REMOTE CONTROL FOR VOLUME Volume up Volume down Changing the batteries Take off the bottom plate (three screws size Phillips 1) Change the batteries. Type: 2 x Type AAA 1.5 V Please take care not to push the buttons of the remote control while inserting the new batteries Please take care not to push the buttons of the remote control while inserting the new batteries. -
Page 17: Tubes
9. TUBES 9.1. Tube layout Before opening the cover it is mandatory to remove the power cord from the mains power inlet. Tubes used also available under this description Line board ECC 81 (E 81 CC / ECC 801 S / 12 AT 7) ... -
Page 18: 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 19: The Role Of The Phono Preamplifier
10.2. The phono section of the HP 300 SE The phono section of the HP 300 SE is an enhanced version of our hybrid phono technology. The phono section offers a greater level of compatibility with low output and low impedance moving coil cartridges. -
Page 20: 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, (8 pc.) Before opening the cover it is mandatory to remove the mains power cord from the power supply. - Page 21 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)
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Page 22: Troubleshooting
Such a device has no adverse effect on the sound or picture quality of tuners or TVs. The HP 300 SE is not direct earthed and therefore cannot cause ground loops. Clicks and pops Older fridges and 12 V halogen lamps can cause cracking through the loudspeakers when they are switched on and off. - Page 23 12. TECHNICAL DATA AND DIMENSIONS In- and Outputs Inputs 3 x RCA (one is phono with the option phono otherwise it is a line level input), 2 x XLR Bypass-Function for input AUX or XLR Outputs 2 x RCA, 1 x XLR, 1 x Monitor (RCA) Ratio of the XLR Transformer 1:0.5:0.5 PIN assignment XLR...
- Page 24 12. TECHNICAL DATA AND DIMENSIONS Preamplifier HP 300 SE 390 mm Power Supply...
- Page 25 12. SPECIFICATION Frequency response Frequency response accuracy of line stages in 'Gain Low, Med and High. In the frequency response of 20 Hz - 200 kH. Total Harmonic Distortion, Line Stage Overall distortion (THD + noise) of the line stage from 20 Hz to 200 kHz. Distortion remains low up to 20 kHz...
- Page 26 12. SPECIFICATION FFT Spectrum Distortion spectrum of line stage, 5 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. Phono RIAA Equalization Graph Frequency response of the phono stage with and without subsonic filter...
- Page 28 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 OCTAVE AUDIO Germany www.octave.de...
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