User`s manual PAM G2
Contents
1. 6 Usage 6 1 Powering up First of all please make sure your PAM G2 is connected correctly to your turntable preamplifier and mains see section Installation and power supply on page 9 and section Inputs and outputs on page 12 The PAM G2 is a stand by unit As soon as the amplifier is con nected to the mains the unit is in stand by mode Only in cases of extended absence like vacations or if massive trouble on the mains power is to be expected it is recommended to disconnect the PAM G2 from mains A Important e Never pull the mains cord while the PAM G2 is switched on Be fore you pull the mains plug power down the unit to stand by mode first 6 2 Switching on off To power up the PAM G2 from stand by mode press the power key on the front panel Now the PAM G2 is in normal operating mode If you would like to switch off the unit please press the power key on the front panel 6 3 Control elements on the front panel The front panel has two keys to control the PAM G2 see section Overview front panel on page 7 power Use this key to switch on off the unit input Push this key to select the input channel A Important e f your PAM G2 is equipped with only one channel the input key is disabled and channel switching is not possible In this case only In put 1 is available 13 6 4 Mains phase detection The correct polarization of mains is important for reasons of audio c2. Note In the above example the arithmetically resulting value of 80 pF was replaced with the suitable capacitor of 82 pF from commonly available standard E12 series 7 3 2 Resistance reduction If the required input resistance is less than the minimum selectable base resistance of Rp 100 Q or the needed resistance value is not available use an external resistor to get the required value Connect an additional high quality resistor Ra to the input C R ext 15 and 16 using a RCA plug to reduce the input resistance Attention The reciprocal values of the resistors are added so the input resistance is reduced R N L gt Rs l 0 ext EET Ry mir Example 1 If a resistance of R 33Q is needed choose the base resistance to Ro 100 Q and add external resistor of Ret 50 Q 1 P m 8 508 33 100 Example 2 If a resistance of R 200 Q is needed choose the base resistance to Ro 330 Q and add external resistor of Rext 510 Q 1 ext 1 1 5 0 200 330 8 Technical information 8 1 Design The construction is optimized magnetically and capacitatively The signal paths have absolute minimum lengths with no harmful components like coupling capacitors coils or relays Input and output circuits are immune to negative influences of connected devices Consequently SMD minia ture technology ensures optimized high frequency properties Gain and RIAA de emphasis are carried o
3. eren 17 Adjusting the input capacity sssessssseeeeeeeeneeneen 17 Resistance reduction ccceccsessceesceseceeceeeeeeeseceeceaeeseeeeseceaeeatees 18 Technical information ccccccsscsssssssscssscesssssssssssssssssscsssoes 19 Design 3i detis rper Rd re A E A a 19 Power supply ee recette e gebe ee eR uei 19 8 3 10 Circuitry Security AAVICE ccccccccccscceresecesccorssccceseccesceesescessessssseseseese Technical data 1 Preface The Audionet Team congratulates you on your purchase of this unit Audionet components are no marketing products they are authentic Conceived and developed with scientific inspiration professional engi neering expertise and a passion for achieving the perfect sound They are unique creations designed to inspire musical enjoyment and have an ex cellent reputation amongst all connoisseurs throughout the world Each and every one of our precision manufactured devices are individually crafted at our factory located in Bochum Germany by our experienced and passionate workforce But before you start listening to your new Audionet PAM G2 please read this manual carefully so you are able to use and enjoy all functions of this unit without drawback on music quality 1 1 Included Included you will find the following items the phono preamplifier PAM G2 the user s manual that you are currently reading one standard mains cord one green yellow cord for an
4. AUdIONET Phono Preamplifier for MC MM User s Manual 4 1 4 2 4 3 5 1 5 2 6 1 6 2 6 3 6 4 6 5 7 1 7 1 1 7 1 2 7 1 3 7 2 7 3 7 3 1 7 3 2 8 1 8 2 Contents AKE U 5 Included iet re tek de REDER 6 TEaDSDOTLU i c ectetur ges 6 Overview front panel 4 eee eres cete eese ee eee neto nean senso 7 Overview back panel e eeeee eere eee eene ee eene neenon sees eee en se 8 Installation and power supply eere rennen eene 9 Placement 6e epidemic 9 Mains connection W W u sssseseerereresene renere nere seeren nennen enne 10 External power supply EPS sssssssseeeeeee 10 Inputs and outputs eere eere ceres sette ee eene nene eee ens ee see 12 ncc 12 OUtputs xc testor ore ederet IRR Reed 12 WISAGE TA ESS 13 Powering UP roiie seler ale eid esed Rede a eade da 13 Switching on off onn nne Se ter tuenda 13 Control elements on the front panel 13 Mains phase detection eese 14 Input selection socer e sng rto ak ee ten tpa 14 Settings mt osooso iesire 15 Matching the pick up s electrical characteristic 15 MM SYSE MS o8 biennio E EE 16 ME SysteMS sninen a he Pet eee els 16 Typical Setups cocci oe enint Martech a 17 Factory defaults euch aee rente e ieee 17 Further adjustments sssssssseesseeeeeeeen
5. I vI SI 9I 4 Installation and power supply A Important During connecting and removing of turntables or preamplifiers to the PAM G2 all units of your audio system have to be switched off to prevent damage of the PAM G2 or any of the other connected units Please make sure that all cables are in absolute best conditions Broken shields or short cut cables could damage the PAM G2 and or any other connected unit 4 1 Placement A Important It is recommended to place the PAM G2 into a high quality rack or onto a stable table Do not expose the unit to direct sunlight Do not cover the ventilation slots Do not place the PAM G2 in close range to heat sources like radiators Do not place the PAM G2 on top of other units especially not on top of power amplifiers preamplifiers or similar that produce heat Both units could suffer damage from thermal overload Transformers in amplifiers and other powerful devices may create interfering fields Therefore put the PAM G2 as far away as possible from such devices Do not use the unit in places where it is exposed to vibrations Do not place the unit close to loudspeakers or into the corner of a room where it is exposed to high levels of sonic energy which might reduce the sound quality of the unit If the PAM G2 is used with the external power supply EPS it is rec ommended to put the EPS to the right or at least 20 cm above bel
6. additional earth connection 1 2 Transport A Important Please transport the PAM G2 only in the included package Always use the plastic bag to prevent scratches on the casing Please allow the PAM G2 to adapt to the climatic conditions in your listening room before you switch on the unit for the first time after transport Koy lOjeorpur ouueqo Koy 3ndui JoMod Jot dueaag ououg WW DW Jo od o O LINOIpnv 2 Overview front panel Z mdu 75 oouejsisorjndu ZI q mdur gp urer WSIUIAJO 1 1ndur uo oouejroedeo yndur E E QUT uH DOC do Lan duc ake OT candur qd Kyoedeo duj gf Sda Ajddns Jomod euaojxo 10 10309uuo 1481 49 z mdur uo oouegroedeo Indu aseyd smew SUE N OT 431 49 3ndino VOU JO ooutjsrso1 dur eUOTIppe Joy ndut VOY SI Indu suew 6 ISIE z ou indur YOA igne Indyno W TX pooueeg pI T yndur qd Aroedeo ynduy g So qeyUIN 10 SI0 99UU09 reJ z mdu qp urey el q yndur 75 souRystsorynduy 4 ISLIAJoy ou jndur VOU NM TM 2 3 Overview back panel 0I s t 7 I ANVWUID WNHDO8 DOD 8 HEWD NON DI3CI JQVWANVH ONY G3433NISN3 AL VAOP ZHO9 0S AObZ 07 1H9n M aNn Q32NvIV8 ann mA 2 I e KB 7 2 z x a SNIVW 3x8 D A PEON axe ON pe DN NILLAS LNd LNO SINdNI IT Cl
7. e EPS with the included cable to input jack EPS 5 on the back panel of the PAM G2 The shape of the plug prevents any wrong polarity Now screw the ring of the plug onto the EPS input jack 5 3 Connect only the EPS to the mains 4 First switch on the EPS on its back panel see numbers in section Overview back panel on page 8 10 5 Use the power key on the front panel to switch on the PAM G2 The PAM G2 is now ready to use and gets its power from the external power supply EPS 6 To switch off the PAM G2 into stand by mode use the power key on the front panel A Important e Use only EPS G2 devices with serial number 12 21 10 or higher if your PAM G2 is powered by the optional external power supply Noncompliance may cause damage to both units x Tip e Place the external power supply EPS to the right or at least 20 cm above below of the PAM G2 Increasing the distance of both units will minimize the influence of the mains transformers in the EPS e Use a high quality cable for example the Audionet P10 to connect the EPS to mains The sound will improve A Important e Never switch on or off the EPS on its back panel while the PAM G2 is operating e For further information referring to the external power supply EPS please consult its user s manual 11 5 Inputs and outputs A Important e During connecting and removing of turntables or preamplifiers to the PAM G2 all units of your audio s
8. ect the input resistance recommended by the manufacturer or if the information is not available select position 100 Q 7 1 3 Typical setups The following table outlines typical setups for miscellaneous pick up systems Output Input Low Output MC 110 pF MC 100 470 Q 110 pF High Output MC MM 47 68 KQ 160 220 pF High Output MM 47 68 kQ 160 220 pF A Important e For optimum adjustment to your pick up follow the recommen dations of the manufacturer If necessary ask your dealer 7 2 Factory defaults Upon delivery of the PAM G2 following settings are configured by de fault Gain Input resistance Input capacitance This configuration is suitable for most MM pick up systems 7 3 Further adjustments 7 3 1 Adjusting the input capacity If the selectable capacity of Co 420 pF is not enough or the required capacity can not be selected use an external capacitor to get the required value Connect an additional high quality capacitor Cext can be connected to the input C R ext 15 and 16 using a RCA plug to increase the input capacity In this case the capacities are added together 17 Example If a capacity of C 500pF is needed select the base capacity of Co 420 pF with the rotary switch on the back panel Then add an addi tional capacitor of Cexr 82 pF to the input C R ext 15 or 16 to get the required input capacity of 500 pF
9. eristic of the pick up the RCA inputs C R ext and can be used to add ex ternal resistors or capacitors see section Further adjustments on page 17 i Tip e On our website www audionet de you will find an online tool to cal culate the optimum settings of the PAM G2 for your pick up e f you have the specifications of your pick up not available you will probably find the technical data at the following website www vinylengine com cartridge database php 7 1 1 MM Systems For MM pick up systems set the gain to 38 dB For the settings of input resistance and capacitance please refer to the recommendations of the manufacturer of your pick up In case you have no recommendations from the manufacturer for input resistance and capacitance we recommend the values 47 kQ and 200 pF These settings offer suitable conditions for most MM pick up systems 7 1 2 MC Systems MC pick up systems cover a great range of different output levels To achieve an output matching the level of your other sources the PAM G2 offers 4 gain settings For pick ups with a normal output level approx 1 2 mV output volt age set the Gain dB 6 to 58 dB For high output pick ups 3 5 mV position 48 dB 1s better suited In case you have a low output pick up 0 8 mV set the gain to 68 dB In case of doubt assume your pick up working at a normal output level For MC pick up systems the input capacitance should be set to 100 pF Sel
10. issions excepted Specifications and design are subject to changes without prior notice AUCIONET is a trademark of Idektron GmbH amp Co KG Engineered and produced by Idektron GmbH amp Co KG Herner Str 299 Gebaude 6 44809 Bochum Germany www audionet de contact audionet de 22
11. larity and stability Please connect the mains cord that the hot pin of the wall outlet is connected to the pin marked phase 10 of the mains input 9 on the back panel The PAM G2 recognizes the incorrect polarization of the mains plug automatically After pressing the power key the two LEDs on the front panel will flash in different rhythms e Ifthe polarization is correct the LEDs flash slowly 6 amp 9 e If you see the LEDs flashing rapidly amp amp amp please switch off the unit and flip the mains plug If you now switch on the PAM G2 again the unit should show the correct mains polarization by a slowly flashing LEDs A Important e If the PAM G2 issues the mains polarization warning or no warning at all for both positions of the mains plug check the connection to earth of your mains socket and mains cord You have to ensure a stable connection to earth for the mains phase detection of the PAM Gz2 to work correctly 6 5 Input selection Push the input key on the front see section Overview front panel on page 7 to select the desired input channel Depending on the selected input channel the corresponding LED on the front panel is activated A Important e If your PAM G2 is equipped with only one channel the input key is disabled and channel switching is not possible In this case only In put 1 is available 7 Settings 7 1 Matching the pick up s electrical cha
12. ow of the PAM G2 Increasing the distance of both units will minimize the influence of the mains transformers in the EPS 4 2 Mains connection The mains input lo is on the back panel of the PAM G2 To connect the unit to mains use the included mains cord If you prefer to use a different power cord make sure that it meets the specifications for your home country A Important e The electrical specifications of your home country must meet the electrical specifications printed onto the back panel e The PAM G2 is a Class I unit and must be earthed Please ensure a stable earth connection Phase hot pin is marked on the back panel PHASE 10 e Never pull the mains plug while the PAM G2 is switched on Before you pull the mains cord off the socket power down the unit to stand by mode Only in cases of extended absence like vacations or if massive trouble on the mains power is to be expected you should remove the PAM G2 form the mains To disconnect the unit completely from mains pull the mains plug amp Note e Using high quality mains cords as the Audionet P10 may improve the sound quality Please consult your local Audionet dealer 4 3 External power supply EPS In order to use the optional external precision power supply Audionet EPS Enhanced Power Supply with you PAM G2 please proceed as follows 1 Make sure both PAM G2 and EPS are switched off and disconnected from the mains 2 Connect th
13. racteristic At the back of the PAM G2 see section Overview back panel on page 8 are six rotary switches for the basic configuration of both input chan nels The lower row is for the configuration of input 1 the upper row is for the configuration of input 2 The next section covers the configuration of input 1 the setup of input 2 is the same with the rotary switch in the upper row With the rotary switch labelled Gain dB 6 the gain of input 1 is se lected to 38 dB 48 dB 58 dB or 68 dB A Important e Excessive gain could lead to overdrive and distortion Set the gain so that the output voltage of the PAM G2 Upamaz is approx 1 1 5 V With a given pick up voltage Upick up the gain calculates to Upanic i PAMG2 gain A U pickup Refer to the following table to get the gain in dB from the calculated gain factor Example Output voltage Upama2 1 2 V Pick up voltage Upick up 1 5 mV Gain 124 800 set the PAM G2 to 58 dB 1 5mV The rotary switch R Q 7 in the middle is used to set up the input resis tance of input 1 which acts as terminating resistance of the pick up Please select this value carefully it will affect high frequency response With the third rotary switch C pF 8 the input capacitance of input 1 can be set This setting is critical for MM systems only 15 gy Note e If other values are needed to adjust the electrical charact
14. ut simultaneously in two stages The operational amplifiers in the signal path are built up as discrete and optimized elements they have a gain bandwidth product of 1 GHz The output operational amplifiers work in class A mode with a high bias current 8 2 Power supply All voltages are delivered by a 100 VA toroid core transformer and fast impulse stable audio high current capacitors with a total capacity of 40 000 uF The voltages are stabilized by 14 discrete and optimized MOS regulators 8 3 Circuitry Every operational amplifier is supplied by two fast discrete voltage regu lators The amplification and input stages are switched by gold coated precision relays Special input impedances can be set individually 19 9 Security advice A Important e Use only EPS G2 devices with serial number 12 21 10 or higher if your PAM G2 is powered by the optional external power supply Noncompliance may cause damage to both units e Avoid packaging material especially plastic bags coming into chil dren s hands e Store and operate the unit in a dry room at a reasonable room tem perature only e Avoid moisture any liquids dirt or small objects getting into the unit e Setup the unit in a sufficiently ventilated environment e Do not cover the unit e Do not open the unit Unauthorised opening will void warranty e Do not short circuit the outputs e During connecting or removing the PAM G2 to from sources and or po
15. wer amplifiers all units have to be switched off to prevent damage of the PAM G2 or any ofthe other connected units e Use dry cloth for cleaning 20 10 Technical data 40 30 000 Hz 0 2dB Frequency response 13 _ 30 000 Hz 4j 1 0dB Subsonic filter And order high pass fg 8 Hz Gain 38 dB 48 dB 58 dB 68 dB 1 kHz ES lt 103 dB 1 kHz Gain 38 dB lt 83 dB kHz Gain 58 dB 2 pair WBT RCA jacks gold plated 2 pair WBT RCA jackss gold plated for additional impedance adjustment Input impedance selectable at the rear pair WBT NextGen line gold plated Output i i 1 pair XLR Neutrik gold plated 24 Ohm real RCA Output impedance 94 Ohm real XLR T i se in Stand by lt 0 5W max 40 Watt Width 430mm Height 70mm Depth 310mm Front brushed aluminium black anodised white print or aluminium nature anodised black print Top cover brushed aluminium black anodised Chassis steel black coated 2 mm 21 Features individual adjustment to any pick up without opening active dual stage RIAA de emphasis no integrated operational amplifiers or capacities in signal path 14 fast purely discrete realized MOS voltage regulators providing accumulator like characteris tics of power supply 100 VA toroid transformer shielded 40 000 uF capacity Class A output stage DC free outputs FET inputs no bias current Errors and om
16. ystem have to be switched off to prevent damage of the PAM G2 or any of the other connected units e Please make sure that all cables are in absolute best conditions Broken shields or short cut cables could damage the PAM G2 and or any other connected unit 5 1 Inputs The PAM G2 has two stereo line inputs 1j and 3 to connect two pick up arms or turntables The maximal adjustable input capacity is 420 pF and the minimal adjustable input resistance is 100 Q If other values are needed to meet the electrical characteristic of the pick up the RCA sock ets C R ext 15 and 16 can be used to add external resistors or capaci tors see section Further adjustments on page 17 The gold plated screws GND 2 are for connecting the turntable grounds gy Note e The PAM G2 is optionally available with one or two input channels Depending on the model one or two pick up arms or turntables can be connected 5 2 Outputs The PAM G2 is equipped with one RCA output LINE 4 as well as one balanced XLR output BALANCED 14 for the left and right channel to connect the unit to your preamplifier Use the RCA output LINE 4 to connect the PAM G2 to your pre amplifier using high quality interconnectors e g Audionet C100 Alter natively you may connect the preamplifier using the balanced XLR outputs BALANCED in case your preamplifier does not support RCA line inputs
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