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HP 300 MK2

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Содержание HP 300 MK2

Страница 1: ...HP 300 MK2 ...

Страница 2: ...assic circuit designs has not done the technology any favours Today s loudspeakers and source equipment provide better performance than ever before but also make greater demands on amplifiers Modern sound reproduction equipment delivers a level of performance at a price that simply would not have been possible 20 or even 10 years ago These advances have been achieved through the application of cut...

Страница 3: ...ss mode 11 6 1 The HP 300 MK2 in the bypass mode 12 6 2 The HP 300 MK2 in the two channel mode 13 7 Advanced function Connecting a processor 14 8 Programmable remote control 14 9 Tubes 15 9 1 Tube layout 15 9 2 Replacing tubes 16 9 3 Tube service life 16 10 Option Phono MM MC 17 10 1 The role of the phono preamplifier 17 10 2 The phono section of the HP 300 MK2 17 10 3 Guidelines for connecting to...

Страница 4: ... Amplifier Sound Quality OCTAVE amplifiers are equipped with a proprietary control and monitoring system we call Power Management This is an electronic brain within the amp that regulates and controls all of the amplifier s functions It includes the Soft Start Electronics that gently ramp up the heating and supply voltages to save wear and tear on the components In the event of a problem the Power...

Страница 5: ...y in single piece production and is subject to a 100 check A 48 hour endurance run completes the final inspection Over and above that the HP 300 MK2 uses a lavish special power supply which was developed especially for the HP 300 MK2 The power supply of the HP 300 MK2 carries out complex functions On the one hand it ensures a constant acoustic quality by preventing mains disturbances and by creati...

Страница 6: ...ications to OCTAVE equipment are carried out only by a qualified technician Fuses should also only be changed 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 centres Explanation of the warning symbols The exclamation point within an equ...

Страница 7: ...e that it may be in direct sunlight Do not operate the unit near flammable materials gases or vapours Avoid areas where there may be heavy accumulations of dust or where the unit may be subject to mechanical vibration Place your OCTAVE amplifier on a stable even surface 2 Cover Never operate the amplifier without the cover 3 Ventilation Make sure that your amplifier has a good flow of air around i...

Страница 8: ...set at maximum before playing music through the amplifier and the function switch is in the top position Operate 8 Switch on the mains power the push button switch is located on the front panel of the preamplifier The preamplifier needs approx 2 4 minutes warm up time In the warm up time the output is shorted to ground to avoid disturbances When switching the mode switch from normal to 6 dB gain o...

Страница 9: ...uting The semiconductors remain current carrying the tubes operate with reduced power and heating This position is recommended in case of longer intermissions up to 10 hours if you do not want to turn off the unit and to burn in new tubes After ending the Stand By function it takes 3 minutes until the output will be cleared Position Gain normal central position none of the two LED s burns At this ...

Страница 10: ... Low position Bypass AUX The LED AUX beneath the input selector burns independent from the input the rotary switch is positioned The LED above the function switch is also burning In this position the AUX input is switched directly to the output OUT 2 of the preamp bypassing the volume regulator and the line amp stage This signal is also present on the XLR output in true balanced mode This feature ...

Страница 11: ...input for the front channels of the multi channel system CD Single ended input Tape rec Recording output for tape cassette or dat recorders Tape play Connect these Inputs to the play Outputs of your recorder Outputs Two single ended and one balanced output In the Bypass Aux mode the signal is switched to the OUT 2 and the balanced output The single ended OUT 1 is furthermore connected to the volum...

Страница 12: ... bottom position of switch the signal is switched directly to the Output 2 bypassing the volume regulator and the line amp of the preamp Due to the balancing circuit of the HP 300 MK2 this signal is automatically balanced and is also present on the XLR outputs of the HP 300 MK2 Therefore you can use a balanced stereo power amp for the front channels an aspect that is not often realizable Note In t...

Страница 13: ...OUT 1 OUT 1 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 1 The tape record monitor function is also available in bypass mode Tape monitoring is given on out 1 Tape switch in position tape 2...

Страница 14: ... Input L Cinch XLR Input R Rear L Center Rear R OUT 1 2 XLR OUT 1 2 XLR L R Two channel unit CD SACD Tuner Tape etc Multi channel unit DVD Player etc Power amplifier Front Main Loudspeakers In the two channel mode all three outputs are regulated and amplified In the two channel mode the AUX input can be used as a normal line high level input ...

Страница 15: ... the corrected signal of the processor is usable in the TAPE position of the Tape Switch Any digital source like CD can connected direct to the processor Most of the processors are equipped with analog and digital inputs This technology allows the use of a digital processor both in the digital and in the analog path without degradation of the analog signal Switching between the two ways is very co...

Страница 16: ...fore 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 ECC 88 6 DJ 8 E 88 CC 6922 Phono MC board ECC 81 E 81 CC ECC 801 S 12 AT 7 12 AT 7 WA ...

Страница 17: ...ng tips Cleaning agents and contact cleaners are not recommended for tube sockets Clean dirty sockets with compressed air and carefully clean tarnished tube pins using a wire brush 6 Please note No adjustments are necessary to your amplifier after fitting new tubes It may take new tubes some time up to 300 hours to achieve their optimum sound quality Manufacturing faults in tubes may only become e...

Страница 18: ... impedance moving coil cartridges Most preamps have problems with such cartridges since both gain and input impedance issues have to be addressed simultaneously We have developed an MC head amp that successfully eliminates the problem areas At the heart of the equalizer is a tube circuit containing 1 tube and two integrated circuits It incorporates a switchable subsonic filter which prevents very ...

Страница 19: ...witch for Subsonicfilter left and right channel Load Impedance A B C A Subsonicfilter Rippled records can create subsonic disturbances The subsonicfilter eliminates this disturbances Cutoff frequency is 15 Hz Attentuation is 12 dB oct State of delivery Subsonicfilter on B Gain Setting The gain switch allows you to match the gain factor of the phono amp for your cartridge gain high for normal MC ca...

Страница 20: ...250 4 1 2 on 200 5 6 on 200 5 3 on 100 7 on 100 6 1 3 on 90 5 7 on 90 7 2 3 on 76 6 7 on 76 8 4 on 75 8 on 75 9 1 2 3 on 71 5 6 7 on 71 10 1 4 on 69 5 8 on 69 11 2 4 on 61 6 8 on 61 12 1 2 4 on 57 5 6 8 on 57 13 3 4 on 44 7 8 on 44 14 1 3 4 on 42 5 7 8 on 42 15 2 3 4 on 39 6 7 8 on 39 16 all on 37 all on 37 The input impedance setting is important in achieving a balanced sound from your pickup You...

Страница 21: ...single power socket board for your entire system and to use a different power outlet in your listening room Channels are not balanced Check that the cinch plugs are a tight fit Bend the outer earth contact inwards slightly if necessary Sometimes the internal pin in a cinch plug may not be a tight enough fit in which case you should change either the interconnect or the socket 1 Damaged cables and ...

Страница 22: ... inputs 86 dB 10 kHz Input impedance 100 kOhm Output impedance 56 Ohms cinch 2 x 22 Ohms XLR Channel tracking of volume control 0 5 dB 70 dB Pin allocation XLR output Pin 1 ground Pin 2 hot Pin 3 cold Phono MC RIAA equalization accuracy 0 3 dB 15 Hz 20 kHz Subsonic filter corner frequency 15 Hz 3 dB Input impedance 30 1000 Ohms Sensitivity 0 1 mV 0 5 mV Gain low 71 dB Gain high 80 dB Signal to noi...

Страница 23: ... optional phono MC module may be added any time MC input impedance is adjustable over a wide range Soft start for heaters operating voltage and signal output This results in maximum service life of the tubes and noise free switch on off The output is enabled after 4 minutes Diagrams Overall distortion THD noise of line stage from 20 Hz 200 kHz Distortion remains low up to 20 kHz Frequency response...

Страница 24: ...pectrum 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 ...

Страница 25: ...e de 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 ...

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