background image

SPHINX

 Myth 1                     Service Manual

 6

  

4. OPERATION

Connect the mains cable to a mains outlet.

Once you have finished connecting all components,
you can power on the Myth 1 with the mains switch

O / I 

(14) .

The volume control will then automatically turn
counter-clockwise and for a while the STANDBY
LED will blink red, after which it will remain red. The
pre-amp is now in standby mode.

From now on you should switch the amp on or off
with the STANDBY button (11).
That way, all circuits will remain at optimum
operating temperatures and the audio quality will be
100% immediately after switching on. Additionally it
significantly increases the life span of the
component.

The Myth 1 is now in stand-by mode.

Power on

Switch the Myth 1 on with the STANDBY button.
The pre-amp will select the CD input after which it
un-mutes the output.

Selecting an input

You may select an input with one of the buttons 1. to
9.: the LED will illuminate.
The new input becomes active after you have
selected it. You will hear a 'click'. This is caused by
the precision relays for the inputs: the 'old' one is
released while the new one is energised.

Adjusting the volume level

The large VOLUME control to the right adjusts the
volume level from OFF to maximum (fully clockwise).
The level change is immediate.

Temporarily set volume to ‘zero’

Press the MUTE button (5) temporarily mutes the
sound. The red LED will light. Another press on this
button un-mutes the output.

Power off

You switch the Myth 1 off (to stand-by) with the
STANDBY button (11).

Summary of Contents for Myth 1

Page 1: ...1 SERVICE MANUAL MYTH 1 PREAMPLIFIER LINE 3 LINE 1 CD PHONES VIDEO MUTE LINE 4 LINE 2 TUNER TAPE MON STANDBY...

Page 2: ...arily set volume to zero 6 Power off 6 5 SPHINX REMOTE CONTROL 7 Buttons 7 Operation 8 Selecting without switching 8 Batteries 8 Encountering problems 8 6 TECHNICAL SPECIFICATIONS 9 7 ADJUSTMENT PROCE...

Page 3: ...sive technical and exterior quality inspection This ensures you will enjoy many years of high quality audio from a perfect looking product After unpacking your Myth 1 we therefore recommend you carefu...

Page 4: ...ht 6 PHONES To connect dynamic stereo headphones 7 TUNER To select the Tuner input The red LED will light 8 LINE 2 To select the Line 2 input The red LED will light 9 LINE 4 To select the Line 4 input...

Page 5: ...onnect the signal cable from the signal source for LINE 1 9 VIDEO To connect the signal cable from the audio output of the video source 10 Control Out To connect the optical cable s to other Sphinx co...

Page 6: ...omponent The Myth 1 is now in stand by mode Power on Switch the Myth 1 on with the STANDBY button The pre amp will select the CD input after which it un mutes the output Selecting an input You may sel...

Page 7: ...d The red LED will be illuminated Another press on this button un mutes the outputs 4 TAPE MONITOR Use this button to select the Tape IN input Pressing this button has the same effect as pressing the...

Page 8: ...ol with the different Sphinx components will be explained in the corresponding User Manual of each component Batteries The four batteries have a life span of approximately one year during normal use b...

Page 9: ...D 0 002 impedance 10 ohm Volume control ALPS motorised channel imbalance less than 2 dB Sphinx Control 2x optical Remote control Full function Power supply Internal completely stabilised Supply capaci...

Page 10: ...he amplifier output Switch the amplifier ON and wait until it has reached the proper working temperature Set the millivolt meter to the DC range Place the measurement clips of the meter over the outpu...

Page 11: ...r the info in this table This table can then be used for future reference Please also send by fax or e mail the specific information to the Sphinx International Service Department see page 3 this info...

Page 12: ...INX Myth 1 Service Manual 12 9 DIAGRAMS AND PARTS LISTS The next pages contain the front and rear panel lay out and a complete set of schematic drawings including the associated parts lists if applica...

Page 13: ...O AMPR TO AMPL LINE OL 26V 26V Myth 1 left channel m1 ampl sch TO AMPL LINE OL 26V 26V 26V 26V Myth1power supply m1 ps sch 26V 26V ANA1 ANA2 LEDS OUTP Myth 1 control m1 ctrl sch ANA1 ANA2 LEDS OUTP TO...

Page 14: ...0N C34 100N C37 100N D22 1N4007 D23 1N4007 D24 1N4007 D25 1N4007 D27 1N4007 D26 1N4007 C31 2200U 63V C38 2200U 63V Vout Vin GND U1 7818 DGND 18V 26V 26V D28 1N4007 D29 1N4007 D30 1N4007 D31 1N4007 5V_...

Page 15: ...EL5 MT2 24V REL6 MT2 24V REL10 MT2 24V LINE2 LINE1 TUNER CD LINE4 LINE3 VIDEO TAPEIN TAPEOUT TO AMPL TO AMPR R29L 1M R29R 1M AGND AGND AGND LINE OR LINE OL R26R 4R99 R26L 4R99 HPR HPL D8 1N4148 D9 1N4...

Page 16: ...1U AGND Q2L C1775 D7L LD D3L LD D4L LD D2L LD D1L LD C8L 100N C9L 100N AGND 2V 2V C6L 100N C7L 100N C5L 100N C4L 100N C14L 100N C15L 100N Q3L C1775 C21L 100N C20L 33P Q5L A1668 Q14L C4382 AGND AGND AG...

Page 17: ...1U AGND Q2R C1775 D7R LD D3R LD D4R LD D2R LD D1R LD C8R 100N C9R 100N AGND 2V 2V C6R 100N C7R 100N C5R 100N C4R 100N C14R 100N C15R 100N Q3R C1775 C21R 100N C20R 33P Q5R A1668 Q14R C4382 AGND AGND AG...

Page 18: ...OUT_TU T1_1 T2_1 OUT_REL4 T2_2 T1_2 OUT_CD OUT_L1 OUT_L3 X1 X2 P17 P16 P15 P14 P13 AVCC AVSS P37 P12 P00 P01 RES VSS VCC P11 P10 P34 P35 P36 P31 P32 P33 P02 P03 P04 P30 U3 87C752 Q1 8MHz C9 100N 5V DG...

Page 19: ...390R R17 390R R18 390R R19 390R R20 390R R21 390R R22 390R R23 390R R24 390R S1A S1B S2A S2B S3A S4A S5A S5B S4B S3B S7A S7B S8A S8B S9A S10A S11A S11B S10B S9B S6A S6B S12A S12B 5V 5V D1 LD D2 LD D3...

Page 20: ...tor C16L 470U Electrolitic capacitor C16R 470U Electrolitic capacitor C17L 470U Electrolitic capacitor C17R 470U Electrolitic capacitor C18L 470U Electrolitic capacitor C18R 470U Electrolitic capacito...

Page 21: ...Electrolitic capacitor C41L C63V 10U Electrolitic capacitor C41R C63V 10U Electrolitic capacitor C42L C63V 10U Electrolitic capacitor C42R C63V 10U Electrolitic capacitor C43L C63V 10U Electrolitic ca...

Page 22: ...48 Diode D19L 1N4148 Diode D19R 1N4148 Diode D1L LD LED D1R LD LED D2 LD LED D22 1N4007 Diode D23 1N4007 Diode D24 1N4007 Diode D25 1N4007 Diode D26 1N4007 Diode D27 1N4007 Diode D28 1N4007 Diode D29...

Page 23: ...Q11L C1775 Transistor Q11R C1775 Transistor Q12L J109 Dual P JFET Q12R J109 Dual P JFET Q13L A872 Transistor Q13R A872 Transistor Q14L C4382 Transistor Q14R C4382 Transistor Q1L K389 Dual N JFET Q1R K...

Page 24: ...K2 Resistor R14R 2K2 Resistor R15 390R Resistor R15L 2K2 Resistor R15R 2K2 Resistor R16 390R Resistor R16L 2K2 Resistor R16R 2K2 Resistor R17 390R Resistor R17L 2K2 Resistor R17R 2K2 Resistor R18 390R...

Page 25: ...L 475R Resistor R2R 475R Resistor R3 220R Resistor R30 2K2 Resistor R31 2K2 Resistor R32 2K2 Resistor R33 2K2 Resistor R34 2K2 Resistor R35 5K6 Resistor R36 1K Resistor R37 2K2 Resistor R38 2K2 Resist...

Page 26: ...K7 Resistor R72 2K7 Resistor R7L 475R Resistor R7R 475R Resistor R8 220R Resistor R8L 475R Resistor R8R 475R Resistor R9 220R Resistor R9L 475R Resistor R9R 475R Resistor REL1 MT2 24V Relay REL10 MT2...

Page 27: ...tch TAPE1 CINCH MYTH4P CINCH TUNER CD1 CINCH MYTH4P CINCH U 14 1 CINCH MYTH4P CINCH U 14 2 CINCH MYTH4P CINCH U1 7805 Voltage regulator U1 7818 Voltage regulator U2 ADM705 MAX705 U3 87C752 Microproces...

Reviews: