Violectric PPA V600 User Manual Download | Manualshive

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17

EQUALIZATION CURVES

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Summary of Contents for PPA V600

Page 1: ...1 PHONO PRE AMPLIFIER PPA V600 USER s MANUAL ...

Page 2: ...rth Grounding Concept 7 Connection Connectors 9 General 10 Operation 11 Input Impedances 15 Input Capacities 16 Setting the Equalizer 17 Opening the Case Dismantling 20 Things to know 21 Disposal 24 Technical Data 25 Jumper Setting 26 Conformity Statement 27 Warranty 28 ...

Page 3: ...High End market with its specific requirements Who develops equipment devices are exclusively developed in Germany by the engineers of Lake People electronic GmbH In doing so the team of developers can draw on twenty years of experience and countless products for the pro audio domain Among others the first German made 20 bit A D and D A converters were developed by Lake People in the early ninetie...

Page 4: ...it should devices are covered by a 24 month warranty In case of any malfunction during this period they can be shipped to the manufacturer directly Of course the client will benefit from s and Lake People s full technical support even when warranty has expired Any technical questions or need for advice is welcome is a subsidiary of LAKE PEOPLE electronic GmbH Turmstrasse 7a D 78467 Konstanz Fon 49...

Page 5: ...tion to cords at plugs convenience receptacles and the point where they exit from the appliance This unit is equipped with a 3 pole mains cable with German 3 pin mains plug In some countries this unit must be operated with a mains adaptor supplied by the owner Please refer to the table below to connect a mains plug OVERVIEW POWER CORD FUNCTION AND COLORS CONDUCTOR COLOR Alternativ L LIVE BROWN BLA...

Page 6: ...k of fire or electric shock the user should not attempt to service the appliance beyond the measures described in the operating manual All other servicing or repair should be referred to qualified personnel Electromagnetic Compatibility This unit conforms to the Product Specifications noted as Declaration of Conformity at the end of this manual Operation is subject to the following conditions this...

Page 7: ...is jumper As a result the interconnection for DC voltages and lower frequencies 150 Hz will be cut Higher frequencies will be bled off to earth potential through the RC filter The LIFT position is helpful in case of hum or jitter caused by different ground earth potentials Of coarse full electrical protection is garanteed as the case is always connected to ground earth potential See also page 20 2...

Page 8: ...LIFT Jumper accessible from the inside Mind the SECURITY INSTRUCTIONS G ROUND Ex works all jumpers are set to G ground position Pin 1 is connected to the internal ground reference High frequency interference is deflected to the case via a 100 nF capacitor L IFT The interconnection between Pin 1 and ground is open High frequency interference is deflected to the case via a 100 nF capacitor This jump...

Page 9: ...9 Connection Connectors for analog signals ...

Page 10: ...mplifier of extreme bandwidth front switchable gain in six steps from 36 to 60 dB front face balance control 2 dB internally selectable equalization RIAA NAB BBC FLAT internally switchable 20Hz high pass according to IEC specifications individual channel layout DC coupled signal path top grade operational amplifiers within the signal path high quality MKP capacitors within the signal path 0 1 and ...

Page 11: ...cold appliance mains cord with Schuko type plug Because of the employed multi mode switch mode supply the actual AC voltage may vary between 90 and 250 volts AC for flawless operation The US and Japan version comes with a US style mains cord Bith switch mode supplies will output 24 V DC External filters will cut any high frequency glitches Line regulators form the internal operating voltages of 18...

Page 12: ...Ground PIN 4 Right PHASE PIN 5 Right PHASE THE UNBALANCED INPUTS Or the connection of unbalanced signals two gold plated cinch sockets are located in the cartridge input section denoted as UNBAL L and UNBAL R INPUT SELECTION The cinch inputs sockets are activated ex works In order to utilize the balanced inputs the unit must be opened and the two related jumpers set from U unbalanced to B balanced...

Page 13: ... means of a precision resistor array thus offering highly accurate stereo matching at lowest crosstalk Settings of 30 42 dB are usually suited for MM systems while 48 60 dB are intended for the use with MC pickups So called high output MC systems are best operated at 42 48 dB gain As noise level rises proportional to gain it is always recommended to choose the lowest practical gain setting BALANCE...

Page 14: ...frequency equalization and interference to the cable between turntable and input can be significantly reduced by balanced coupling between the pickup system and the amplifier using balanced cabling In order to precisely match with any pickup model 9 input impedance and 16 input capacitance settings can be selected by DIP switches inside the unit While the RIAA equalization curve is the most common...

Page 15: ... pickup s technical specifications or optimized by further recommendations and listening tests Settings comprise 10 90 100 130 150 250 330 1k and 47k ohms whereas 47k is recommended for MM moving magnet systems The unit s case must be opened to change this setting See also technical appendix pages 20 26 The DIP switches marked with MC may be set as follows Note Setting ex works is 47kOhm ...

Page 16: ...technical specifications or optimized by further recommendations and listening tests Settings comprise 33 66 110 150 180 210 260 300 330 370 410 450 480 520 560 and 600 pF Input impedance for MM systems should be set to 47k ohms The unit s case must be opened to change this setting See also technical appendix pages 20 26 The DIP switches marked with MM may be set as follows Note Setting ex works i...

Page 17: ...17 EQUALIZATION CURVES ...

Page 18: ...tunately the so called RIAA curve Recording Industry Association of America has established itself as the most common standard Nevertheless one may encounter records manufactured using NAB National Association of Broadcasters BBC British Broad casting Corporation or FLAT no treble EQ equalization curves which the V600 can easily cope with by means of its switching capabilities Furthermore a 20 Hz ...

Page 19: ...ey are denoted as BAL L for the left channel and BAL R for the right channel respectively Output impedance is significantly less than 1 ohm Output polarity complies with AES 14 1992 1 ground 2 in phase 3 out of phase NOTE When connecting unbalanced loads to the balanced outputs pin 3 must not be bridged to signal ground but left unconnected Output signal level drops by 6 dB in this mode NOTE Unbal...

Page 20: ...urntables susceptible to hum Most turntables are connected unbalanced via cinch leads Unfortunately indeed since a balanced connection would be hum free in practice and much more advisable in technical terms Common pickup systems usually represent a perfect dipole and thus the advantages of balanced signal connection could easily be made use of Moreover vinyl recordings are being equalized during ...

Page 21: ...ts which were originally intended for the use with microphones However the difference between dynamic microphones and pickup systems isn t as big as one might assume By means of wire coils and magnetism they both deliver very low signal voltage at quite similar impedance During design we discovered that this breed of instrumentation amplifiers is ideally suited for turntable pickups as well The PP...

Page 22: ...input impedance The PPA V600 provides eight different impedance settings while the ninth 47k is the standard setting for moving magnet MM systems The optimum setting is to be read from the pickup s specification sheet in the first place but may also be refined by further recommendations or listening tests The PPA V600 offers variable input capacitance What are the advantages of variable input capa...

Page 23: ... are processed by the circuit at the same time a certain mutual interference is inevitable The adverse effects may be marginal only but should be excluded during the design process wherever feasible The PPA V600 contains numerous operational amplifiers Why are operational amplifiers ideal for small signal processing High end audio gear often follows a discrete design meaning that the amplifier sta...

Page 24: ...s any switching frequency leakage into the signal section DISPOSAL Disposal of Old Electrical Electronic Equipment Applicable in the European Union and other European countries with separate collection systems This symbol on the product or on its packaging indicates that this product shall not be treated as household waste Instead it shall be handed over to the applicable collection point for the ...

Page 25: ...alues in us 3183 318 0 Flat 25 BBC 50 NAB 75 RIAA Filter Deviation absolut 0 05 dB Filter Difference L R 0 025 dB RIAA 0 4 dB alle anderen Phase Difference L R 0 5 Degree RIAA IEC Lo Cut int switchable 20 Hz 6 dB pro Oktave Frequency Range Flat 3 Hz 85 60 kHz Gain 30 60 dB Noise eIN Ri 0 Ohm 117 130 dB 30 60 dB Gain Noise eIN Ri 1kOhm 116 118 dB 30 60 dB Gain THD 1 kHz Input 30 60 dBu 103 92 dB 30...

Page 26: ...26 ...

Page 27: ...fication of conformity with regard to electromagnetic compatibility the following harmonized standards are applied EN 50081 1 1992 Generic emission standard EN 50082 1 1992 Generic immunity standard Product family standard for audio video audio visual entertainment apparatus EN 55013 2001 EN 61000 3 2 2000 EN 55020 2002 EN 61000 3 3 1995 This declaration is given under responsibility of Konstanz 3...

Page 28: ...f the warranty If it is necessary please dispatch your item to Lake People electronic GmbH Fon 49 0 7531 73678 Turmstrasse 7a Fax 49 0 7531 74998 D 78467 Konstanz E Mail info lake people de Your warranty claim begins with the date of purchase which should be denoted on your proof of purchase In case of return do not forget to include the receipt of sales or a copy of the receipt Please also includ...

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