MAS Marquis Manual Download Page 20

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K O S T A S

M E T A X A S D E S I G N

S c h e m a t i c

Title

Number

Revision

Size

Date:

6-Jul-2003

Sheet of

File:

C:\MAS PROTEL\_marquis_FINAL\Marquis_Fina_UPDATEDl.ddb

Drawn By:

Q10

R21

R22

R24

R25

R13

R19

R28

R29

R12

R11

R18

R17

R45

R10

R16

R15

R46

R26

R27

R14

R20

R23

VR5

R30

R31

R42

R38

R36

Q33

R41

Q34

C10

R35

R32

R33 R55

R56

Q10a

R21a R22a

R24a R25a

R13a

R19a

R28a

R29a

R12a

R11a

R18a

R17a

R45a

R10a

R9a

R16a

R15a

R46a

R128a

R26a

R27a

R14a

R20a

R23a

R73a

R8a

R2a

R3a

R1a

R6a

R5a

R7a

VR5a

D1a

D2a

R30a

R31a

U1a

Q2a

Q1a

Q4a

Q3a

R42a

C6a

C7a

C8a

C5a

R38a

R36a

Q33a

C9a

R41a

Q34a

C10a

R127a

R126a

R35a

R32a

R33a

R55a

R56a

KOSTAS METAXAS MARQUIS PRE AMPLIFIER

CE1

CE2

CE3

CE4

CE5

CE6 CE7

CE8

DE5

DE6

DE7

DE8

DE9

DE10

DE11

DE12

R75a

R74a

13a

CP1

CP2

CP3

CP4

R66

R67

R65

R37

DL2

DL1

DL4

DL3

2
3
4

5
6

JP1

VOL_R

VOL_L

+30V

Q12

Q12a

Q13a

Q13

Q14

Q14a

Q15a

Q15

Q9a

Q11

Q11a

Q5a

Q6a

Q7a

Q8a

RA1

Q18a

Q22a

Q19a

Q25a

Q27a

Q26a

Q24a

Q31a

Q32a

Q28a

Q23a

Q17a

Q29a

Q16a

Q30a

Q200aA

Q200aB

R102a

R103a

R101a

R108a

R116a

R115a

R125a

R124a

R123a

R117a

R119a

R118a

R122a

R105a

R100a

R109a

R107a

R106a

R121a

R120a

R104a

R112a

R111a

R113a

R110a

R114a

CE9a

CE10a

DZ1

R128

R127

R126

Q18

Q22

Q19

Q25

Q27

Q26

Q24

Q31

Q32

Q28

Q23

Q17

Q29

Q16

Q30

Q200A

Q200B

R102

R103

R101

R108

R116

R115

R125

R124

R123

R117

R119

R118

R122

R105

R100

R109

R107

R106

R121

R120

R104

R112

R111

R113

R110

R114

CE9

CE10

DZ1

-30V

OUT_L

OUT_R

RE1

RE2

RE3

RE4

RE5

RE6

RE7

RE8

RE9

RE10

RE11

RE12

JPS1

VOL_ML

VOL_MR

Summary of Contents for Marquis

Page 1: ...K O S T A S M E T A X A S D E S I G N Marquis K O S T A S M E T A X A S D E S I G N ...

Page 2: ... a d e s o f H i E n d 0 2 L i s t e n i n g R e f e r e n c e 0 5 D e s i g n P h i l o s o p h y 0 6 O p e r a t i n g I n s t r u c t i o n s 1 1 W h a t t h e c r i t i c s s a y 1 2 S p e c i f i c a t i o n s 1 4 C o n t r o l s F e a t u r e s 1 5 M a i n t e n a n c e 1 6 S c h e m a t i c 1 8 E C C o n f o r m i t y 1 9 ...

Page 3: ...wer supply First DAC to use lowest jitter APOGEE CLOCK First FULL range and high efficiency electrostatic First Audio Manufacturer to use BMW Porsche CAD PCB software design systems Yo u a r e a b o u t t o l i s t e n t o a n a m p l i f i e r w h i c h h a s e v o l v e d f r o m o v e r 2 0 y e a r s o f d e d i c a t e d l i s t e n i n g a n d t h e a p p l i c a t i o n o f t h e s t a t e o...

Page 4: ...K O S T A S M E T A X A S D E S I G N 3 Decades of Hi End 1980 s 02 Opulence Preamplifier Assembly Engraving Kostas Metaxas circa 1985 Soliloquy Monoblocks Ecstatic Revelation Electrostatics ...

Page 5: ...Speaker Reference System circa 1992 Assembly Assembly CZAR 2 way full range electrostatic Opulence Marquis Charisma Preamplifiers Stainless Steel Turret Punching Iraklis on test Empress Full range electrostatics using plastic composite moulded frame PCB design EMPEROR Assembly ...

Page 6: ... by component basis in 3D The Protel PCB software www protel com extends the quite normal listening tests on a component by component level to the PCB level Schematic Based simulations can test or verify the PCB s signal integrity by running the Signal Integrity Simulator which displays a Reflection and Crosstalk Analysis And the 3D visualization allows one to include the PCB as part of the overal...

Page 7: ...kest link in the playback chain K o s t a s M e t a x a s products have been conceived using extensive listening tests with a variety of state of the art ancillary equipment for more than 25 years Our amplifiers have been designed using a variety of state of the art phono playback equipment and our ABSOLUTE REFERENCE a custom made battery powered Stellavox SM 8 Tape Recorder using 1 4 tape at 30 i...

Page 8: ... POWER SUPPLIES Every power amplifier uses a large high current power transformer which feeds a high current bridge rectifier to convert the AC from the transformer into DC voltages which are then mains ripple filtered using massive comput er grade capacitors The rectifier bridge that is normally used is relatively large handles high current and low voltage which slow switching speed because of it...

Page 9: ...ve as it goes through R and returns back to the OUTPUT of the TRANSISTOR circuit and VALVE circuit In the VALVE circuit when 10 VOLTS travels across the 50 000 Ohms R towards the power supply impedance of 2 Ohms the 10V signal is attenuated 50 000 2 25 000 times Therefore 10V 25 000 0 0004 Volts of 1 0kHz sine wave On its way back to the OUTPUT of the circuit it is attenuated by the impedance of t...

Page 10: ...like the output impedance or Damping Factor of a power amplifier is less than one ohm at D C If we use a 2 0 Volt zener diode as our fixed DC voltage reference at the input of the D C amplifier which has a gain of 10 the resulting output voltage is 20 Volts D C The negative feedback loop of the amplifier which fixes the gain of 10 times the 2 0 Volt zener reference is very important because it mai...

Page 11: ...would effectively have a theoretical output impedance or Damping Factor at V of zero ohms at all fre quencies as a result of its wide bandwidth before the addition of nega tive feedback In this way the attenuation of the 10 Volts across the resistor R resid ual would be complete and no attenuated component of the 10 VOLT sine wave could be deflected and return to the OUTPUT of the circuit and caus...

Page 12: ...astest amplifier circuit and add a slow I C voltage regulator with an output capacitor and call it a finished design Our discrete voltage regulators are designed to have the absolute lowest noise reject mains ripple but more importantly to have a speed 1000 V microsecond which is a result of their wide bandwidth design an open loop frequency response greater than 500kHz and output imped ance which...

Page 13: ... The output stage of the preamplifier is connected to a DC protection circuit which activates a relay if it senses any DC before it can cause any damage to your speakers Mains Fuse A 2AMP SLOW BLOW DA205 Type fuse is located on the AC MAINS SOCKET If this blows simply replace with the same rating fuse If the fuse continues to blow please refer to the Maintenance Section of this manual for further ...

Page 14: ...self on the signal handling its chores with near invisibility K e n K e s s l e r H I F I N E W S R E C O R D R E V I E W E n g l a n d The Marquis constitutes in our opinion pure gold and is already the reference point in this price category and will not be superceded in a hurry Jean Hiraga Patrick Vercher LA NOUVELLE REVUE DU SON France The conclusion the sensation is perfect An Amplifier for 90...

Page 15: ...ade body and attack not slowing at all The mids are very descriptive with very good detail and purity soft and extremely sweet The highs are delicate with excellent body and special plasticity The stereo image has excellent dimensions and very good black character and by saying this I mean the black space that separates the instruments and makes them sound as separate entities with lifelike positi...

Page 16: ...capacitance of long greater than 2 metres interconnection cables 2 POWER SUPPLY An external supply houses the completely dual mono high current 46 000uF of primary filtering and stacked 100 Watt toroidal trans formers The DC supply is connected via a 5 pin umbilical cord socket arrangement to the mainframe where the D C encounters another 10 000uF of filtering before it reaches the regulation circ...

Page 17: ...K O S T A S M E T A X A S D E S I G N Contr ols Featur es 15 ...

Page 18: ... is in the UP position and VOLUME control is at position 9 5 Measure the voltage drop after the regulators the emitter of Q16 30 which should be 20 volts 6 If voltages are O K check the waveform on the oscilloscope it should show crossover distortion 7 Clip a multimeter across any of the 100OHMS output stage emitter resistors R46 56 55 45 and turn the trimpot anticlockwise until you measure approx...

Page 19: ...K O S T A S M E T A X A S D E S I G N Maintenance 17 ...

Page 20: ...R55a R56a KOSTAS METAXAS MARQUIS PRE AMPLIFIER CE1 CE2 CE3 CE4 CE5 CE6 CE7 CE8 DE5 DE6 DE7 DE8 DE9 DE10 DE11 DE12 R75a R75 R74a R74 C13 C13a CP1 CP2 CP3 CP4 R66 R67 R65 R37 DL2 DL1 DL4 DL3 1 2 3 4 5 6 JP1 VOL_R VOL_L 30V Q12 Q12a Q13a Q13 1 2 3 Q14 1 2 3 Q14a 1 2 3 Q15a 1 2 3 Q15 Q9a Q9 Q11 Q11a Q5 Q6 Q5a Q6a Q7a Q8a Q7 Q8 Q1 4 6 5 3 1 2 RA1 Q18a Q22a Q19a Q25a Q27a Q26a Q24a Q31a Q32a Q28a Q23a Q...

Page 21: ...ested to EN55020 Electromagnetic immunity of broadcast receivers and associated equipment In accordance with CISPR 16 1 Radio disturbance and immunity measuring apparatus CISPR 16 2 Methods of measurement of disturbances and immunity IEC 801 2 IEC 801 3 3V m 20dB IEC 801 4 1KV AC lines M a n u f a c t u r e r Metaxas Audio Systems 1460 Woodend Rd Romsey 3434 Victoria AUSTRALIA www metaxas com meta...

Page 22: ...K O S T A S M E T A X A S D E S I G N Design Philosophy 20 ...

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