Summary of Phono EQ.2
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Phono eq.2 owner’s manual english.
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Foreword congratulations and thank you for choosing the octave phono preamplifier phono eq.2 alongside the drive and pickup cartridge, the phono preamplifier plays a crucial role in the playback quality of analog records. This is why octave offers a perfectly coordinated phono input, including for r...
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Content 1 1. Octave technology 2 octave amps in contrast to other equipment 2 1.1. Description phono eq.2 2 1.2. Riaa equalization 3 1.3. 2. Safety instructions 4 before you begin 4 2.1. 2.1.1. In case of emergency: disconnect the plug from the mains supply 4 2.1.2. Service and maintenance 4 2.1.3. ...
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Octave technology 2 1. Octave technology octave amps in contrast to other equipment 1.1. Hand built octave amplifiers are hand built and individually tested. They are designed and developed by andreas hofmann. Made in germany octave amplifiers are 100% built in germany. Our employees are highly qual...
Page 5: Riaa Equalization
Octave technology 3 riaa equalization 1.3. A record player is an electro-mechanical device. Music signals are “pressed” into the grooves in the record, and these are physically tracked and read by the pickup car- tridge. In order to get the entire 20 hz to 20 khz frequency range into the grooves, th...
Page 6: Before You Begin
Safety instructions 4 2. Safety instructions before you begin 2.1. 2.1.1. In case of emergency: disconnect the plug from the mains supply never use an amplifier that is damaged or faulty. Make sure it has been labeled as defective and that it cannot be used until it has been repaired by a qualified ...
Page 7: Warranty
Device overview 5 warranty 2.3. Octave can only guarantee the safety, reliability and performance of this unit if modi- fications and repairs are carried out by specialized personnel and if the amplifier is operated in accordance with the instructions contained in this manual. 3. Device overview pho...
Page 8: Phono Eq.2 Rear Panel
Device overview 6 phono eq.2 rear panel 3.2. Legend (1) mc input (l = left; r = right) rca input for mc pickup cartridge systems (2) mm input (l = left; r = right) rca input for mm pickup cartridge systems (3) gnd ground connection (4) output (l = left; r = right) rca output (5) 24v dc connection fo...
Page 9: Bottom Of Phono Eq.2
Device overview 7 bottom of phono eq.2 3.3. Legend (1) impedance mc adjustment of the mc pickup cartridge system input impedance (2) gain mc adjustment of the gain for mc pickup cartridge sys- tems. Gain adjustment allows for adjustment of the mc input to low and high output systems..
Page 10: 5.1.
Connection 8 4. Connection ► please observe the safety instructions and positioning information (see chapter 2, page 4). 1. Before connecting the preamplifier, switch off all other equipment that you intend to connect to it. 2. Move the mm/mc toggle switch to the setting for the desired pickup cartr...
Page 11: 5.2.
Operation 9 170 ohms ○ ● ○ ● 146 ohms ● ○ ○ ● 125 ohms ○ ○ ○ ● 100 ohms ● ● ● ○ 97 ohms ○ ● ● ○ 75 ohms ● ● ○ ○ 66 ohms ● ○ ○ ○ 62 ohms ○ ○ ○ ○ ● = off / ○ = on on delivery, the impedance is set to 100 ohms: this setting is optimal for most low- output mc pickup cartridge systems. Setting the gain f...
Page 12: Troubleshooting
Troubleshooting 10 6. Troubleshooting troubleshooting 6.1. Hum and crackling hum in an audio system is often caused by several system components being ground- ed individually. It is particularly common with tuners, vcrs, or satellite receivers, where the grounded aerial cables cause a ground loop vi...
Page 13: Phono Moving Magnet
Technical data 11 7. Technical data phono moving magnet 7.1. Phono mm frequency response +/- 0.25 db riaa / 25 hz – 20 khz input sensitivity 4 mv gain 50 db input capacity 220 pf input impedance 47 kohms output impedance 100 ohms signal-to-noise ratio -90 db/2.5 v output level maximum input level 19...
Page 14: General Data
Technical data 12 general data 7.3. General data power consumption weight of preamplifier 0.8 kg weight of power supply 0.1 kg dimensions of power amplifier width x height x depth = 100 x 55 x 167 mm dimensions of power supply width x height x depth = 50 x 55 x 40 mm supplied accessories external po...
Page 15: Diagrams
Technical data 13 diagrams 7.5. 7.5.1. Phono mc frequency response, riaa frequency response with subsonic filter 7.5.2. Hum and noise level hum and noise level with mc, gain = 58 db.
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We reserve the right to alter and improve the specifications in pursuit of better. Octave is a registered trademark of andreas hofmann octave audio. This manual is the copyright of andreas hofmann. Reproduction in whole or part is prohibited. En2015.02 octave audio germany www.Octave.De.
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Phono eq.2 bedienungsanleitung owner‘s manual deutsch / english andreas hofmann octave audio industriestr. 13 76307 karlsbad germany tel +49 72 48 / 32 78 fax +49 72 48 / 32 79 hofmann @ octave.De www.Octave.De.