v 20121123 2
C 44900 38500 0 0 0 title-A2.sym
C 47100 49600 1 0 0 input-2.sym
{
T 47100 49800 5 10 1 0 0 0 1
net=BASS:1
T 47700 50300 5 10 0 0 0 0 1
device=none
T 47600 49700 5 10 1 1 0 7 1
value=Bass
}
C 46300 45500 1 0 0 input-2.sym
{
T 46300 45700 5 10 1 0 0 0 1
net=MELODY:1
T 46900 46200 5 10 0 0 0 0 1
device=none
T 46800 45600 5 10 1 1 0 7 1
value=Melody
}
C 48900 49500 1 0 0 capacitor-4.sym
{
T 49100 50600 5 10 0 0 0 0 1
device=POLARIZED_CAPACITOR
T 49100 50000 5 10 1 1 0 0 1
refdes=C503
T 49100 50200 5 10 0 0 0 0 1
symversion=0.1
T 48900 49500 5 10 1 1 0 0 1
value=10u
T 48900 49500 5 10 0 1 0 0 1
footprint=RCY100P
}
N 48900 49700 48500 49700 4
C 48100 45400 1 0 0 capacitor-4.sym
{
T 48300 46500 5 10 0 0 0 0 1
device=POLARIZED_CAPACITOR
T 48300 45900 5 10 1 1 0 0 1
refdes=C504
T 48300 46100 5 10 0 0 0 0 1
symversion=0.1
T 48100 45400 5 10 1 1 0 0 1
value=10u
T 48100 45400 5 10 0 1 0 0 1
footprint=RCY100P
}
N 48100 45600 47700 45600 4
N 49800 49700 53900 49700 4
N 49000 45600 50100 45600 4
C 51000 45700 1 180 0 resistor-2.sym
{
T 50600 45350 5 10 0 0 180 0 1
device=RESISTOR
T 50700 45400 5 10 1 1 180 0 1
refdes=R506
T 50900 45700 5 10 1 1 0 0 1
value=100k
T 51000 45700 5 10 0 1 0 0 1
footprint=R025
}
N 51600 45200 52700 45200 4
N 53200 44500 54600 44500 4
C 51000 44900 1 180 0 resistor-2.sym
{
T 50600 44550 5 10 0 0 180 0 1
device=RESISTOR
T 50700 44600 5 10 1 1 180 0 1
refdes=R508
T 50900 44900 5 10 1 1 0 0 1
value=100k
T 51000 44900 5 10 0 1 0 0 1
footprint=R025
}
N 51600 44800 51600 45600 4
N 51000 45600 51600 45600 4
N 51000 44800 51600 44800 4
N 49000 44800 50100 44800 4
C 46300 44700 1 0 0 input-2.sym
{
T 46300 44900 5 10 1 0 0 0 1
net=JACKSWITCH_B:1
T 46900 45400 5 10 0 0 0 0 1
device=none
T 46800 44800 5 10 1 1 0 7 1
value=from B Jack switch
}
C 54600 44300 1 0 0 capacitor-4.sym
{
T 54800 45400 5 10 0 0 0 0 1
device=POLARIZED_CAPACITOR
T 54800 44800 5 10 1 1 0 0 1
refdes=C508
T 54800 45000 5 10 0 0 0 0 1
symversion=0.1
T 54600 44300 5 10 1 1 0 0 1
value=10u
T 54600 44300 5 10 0 1 0 0 1
footprint=RCY100P
}
C 55700 44200 1 270 0 resistor-2.sym
{
T 56050 43800 5 10 0 0 270 0 1
device=RESISTOR
T 56000 43700 5 10 1 1 0 0 1
refdes=R514
T 56000 43500 5 10 1 1 0 0 1
value=100k
T 55700 44200 5 10 0 1 0 0 1
footprint=R025
}
C 55500 42500 1 0 0 vcc-minus-1.sym
N 55500 44500 57100 44500 4
N 55800 44500 55800 44200 4
N 55800 43300 55800 43100 4
T 45900 39700 9 10 1 0 0 0 9
When there's no cable connected to output B,
the blended bass signal lies on JACKSWITCH_B:1.
The circuit will mix the melody and bass signals
to one mono signal.

When a cable is connected, i.e. when stereo
output is requested, there is no signal on
JACKSWITCH_B:1, so we need R517 to pull down
the input to a defined potential.
C 53900 48900 1 0 0 connector2-2.sym
{
T 54600 50200 5 10 1 1 0 6 1
refdes=CONN502
T 54200 50150 5 10 0 0 0 0 1
device=CONNECTOR_2
T 54200 50350 5 10 0 0 0 0 1
footprint=CONNECTOR 2 1
T 53900 48900 5 10 1 1 0 0 1
value=OUT B
}
T 58000 46000 9 10 1 0 0 0 1
A/Mono out
C 51600 49200 1 0 0 input-2.sym
{
T 51200 49000 5 10 1 0 0 0 1
net=JACKSWITCH_B:1
T 52200 49900 5 10 0 0 0 0 1
device=none
T 52100 49300 5 10 1 1 0 7 1
value=Jack switch
}
T 54900 49200 9 10 1 0 0 0 1
Output B
N 53900 49300 53000 49300 4
T 57100 50600 9 10 1 0 0 0 1
TODO: add off-board wiring of volume control
C 63200 45200 1 0 0 tle2426.sym
{
T 62895 44695 5 10 0 1 0 0 1
device=TLE2426
T 62900 44900 5 10 0 1 0 0 1
footprint=TO92
T 63600 46100 5 10 1 1 0 0 1
refdes=U501
}
C 63400 43800 1 0 0 vcc-minus-1.sym
N 63700 44400 63700 45300 4
C 65300 45400 1 0 0 gnd-1.sym
N 64200 45700 65400 45700 4
C 61500 46300 1 0 0 vcc-2.sym
N 61700 45700 63200 45700 4
N 61700 45400 61700 46300 4
C 61500 45400 1 270 0 capacitor-4.sym
{
T 62600 45200 5 10 0 0 270 0 1
device=POLARIZED_CAPACITOR
T 62000 44800 5 10 1 1 0 0 1
refdes=C510
T 62200 45200 5 10 0 0 270 0 1
symversion=0.1
T 61500 45400 5 10 0 0 0 0 1
footprint=RCY150P
T 61900 44500 5 10 1 1 0 0 1
value=220uF
}
C 64500 45400 1 270 0 capacitor-4.sym
{
T 65600 45200 5 10 0 0 270 0 1
device=POLARIZED_CAPACITOR
T 65000 44800 5 10 1 1 0 0 1
refdes=C511
T 65200 45200 5 10 0 0 270 0 1
symversion=0.1
T 64500 45400 5 10 0 0 0 0 1
footprint=RCY150P
T 64900 44500 5 10 1 1 0 0 1
value=220uF
}
N 64700 45700 64700 45400 4
C 61400 43800 1 0 0 vcc-minus-1.sym
C 64400 43800 1 0 0 vcc-minus-1.sym
N 64700 44400 64700 44500 4
N 61700 44400 61700 44500 4
B 59800 43300 6500 5600 3 0 0 0 -1 -1 0 -1 -1 -1 -1 -1
T 59900 49000 9 10 1 0 0 0 1
Virtual ground and power supply filtering
C 53100 44400 1 270 0 resistor-2.sym
{
T 53450 44000 5 10 0 0 270 0 1
device=RESISTOR
T 53400 43900 5 10 1 1 0 0 1
refdes=R507
T 53400 43700 5 10 1 1 0 0 1
value=4k7
T 53100 44400 5 10 0 1 0 0 1
footprint=R025
}
C 53000 46200 1 0 0 vcc-2.sym
N 53200 46200 53200 45700 4
N 53200 44700 53200 44400 4
C 52900 42500 1 0 0 vcc-minus-1.sym
N 53200 43100 53200 43500 4
C 52100 44700 1 270 0 resistor-2.sym
{
T 52450 44300 5 10 0 0 270 0 1
device=RESISTOR
T 52400 44200 5 10 1 1 0 0 1
refdes=R515
T 52400 44000 5 10 1 1 0 0 1
value=1M
T 52100 44700 5 10 0 1 0 0 1
footprint=R025
}
C 52100 42600 1 0 0 gnd-1.sym
N 52200 44700 52200 45200 4
N 52200 42900 52200 43800 4
C 62900 44500 1 90 0 capacitor-1.sym
{
T 62200 44700 5 10 0 0 90 0 1
device=CAPACITOR
T 63300 44800 5 10 1 1 180 0 1
refdes=C512
T 62000 44700 5 10 0 0 90 0 1
symversion=0.1
T 62900 44500 5 10 0 0 0 0 1
footprint=CK06_type_capacitor
T 62900 44500 5 10 1 1 0 0 1
value=47nF
}
C 62400 43800 1 0 0 vcc-minus-1.sym
N 62700 44400 62700 44500 4
N 62700 45400 62700 45700 4
C 60600 46300 1 180 0 connector2-2.sym
{
T 59900 45000 5 10 1 1 180 6 1
refdes=CONN503
T 60300 45050 5 10 0 0 180 0 1
device=CONNECTOR_2
T 60300 44850 5 10 0 0 180 0 1
footprint=CONNECTOR 2 1
T 60600 46300 5 10 1 1 0 0 1
value=POWER
}
C 60700 44400 1 0 0 vcc-minus-1.sym
N 60600 45500 61000 45500 4
N 61000 45500 61000 45000 4
N 60600 45900 60700 45900 4
C 65000 46800 1 0 0 jumper-1.sym
{
T 65300 47300 5 8 0 0 0 0 1
device=JUMPER
T 65300 47300 5 10 1 1 0 0 1
refdes=J1
T 65000 46800 5 10 0 0 0 0 1
footprint=R025
}
C 64900 48000 1 0 0 vcc-2.sym
C 65300 46600 1 180 0 vcc-2.sym
N 65100 48000 65100 47800 4
N 65100 46800 65100 46600 4
C 50200 49300 1 270 0 resistor-2.sym
{
T 50550 48900 5 10 0 0 270 0 1
device=RESISTOR
T 50500 48800 5 10 1 1 0 0 1
refdes=R516
T 50500 48600 5 10 1 1 0 0 1
value=100k
T 50200 49300 5 10 0 1 0 0 1
footprint=R025
}
N 50300 49700 50300 49300 4
C 50000 47700 1 0 0 vcc-minus-1.sym
N 50300 48300 50300 48400 4
C 52700 44700 1 0 0 bc550.sym
{
T 53300 45200 5 10 0 0 0 0 1
device=NPN_TRANSISTOR
T 53300 45200 5 10 1 1 0 0 1
refdes=Q501
T 52700 44700 5 10 0 0 0 0 1
footprint=TO92_CBE
}
C 60700 45800 1 0 0 inductor-1.sym
{
T 60900 46300 5 10 0 0 0 0 1
device=INDUCTOR
T 60900 46100 5 10 1 1 0 0 1
refdes=L1
T 60900 46500 5 10 0 0 0 0 1
symversion=0.1
T 60700 45800 5 10 0 0 0 0 1
footprint=R025
T 61000 45700 5 10 1 1 0 0 1
value=1mH
}
N 61600 45900 61700 45900 4
C 49600 44600 1 270 0 resistor-2.sym
{
T 49950 44200 5 10 0 0 270 0 1
device=RESISTOR
T 49900 44100 5 10 1 1 0 0 1
refdes=R518
T 49900 43900 5 10 1 1 0 0 1
value=100k
T 49600 44600 5 10 0 1 0 0 1
footprint=R025
}
N 49700 43200 49700 43700 4
N 49700 44600 49700 44800 4
T 46100 42500 9 10 1 0 0 0 2
TODO: orientation of the coupling cap?
Signal on the right is always on virtual ground, so is higher.
C 48100 44600 1 0 0 capacitor-4.sym
{
T 48300 45700 5 10 0 0 0 0 1
device=POLARIZED_CAPACITOR
T 48300 45100 5 10 1 1 0 0 1
refdes=C505
T 48300 45300 5 10 0 0 0 0 1
symversion=0.1
T 48100 44600 5 10 1 1 0 0 1
value=10u
T 48100 44600 5 10 0 1 0 0 1
footprint=RCY100P
}
N 47700 44800 48100 44800 4
C 49600 42900 1 0 0 gnd-1.sym
C 49300 45400 1 270 0 resistor-2.sym
{
T 49650 45000 5 10 0 0 270 0 1
device=RESISTOR
T 49600 45200 5 10 1 1 0 0 1
refdes=R517
T 49600 45000 5 10 1 1 0 0 1
value=100k
T 49300 45400 5 10 0 1 0 0 1
footprint=R025
}
N 49400 44500 49400 43500 4
N 49400 43500 49700 43500 4
N 49400 45400 49400 45600 4
C 58500 44600 1 180 0 input-2.sym
{
T 58900 44800 5 10 1 0 180 0 1
net=OUTPUT_A:1
T 57900 43900 5 10 0 0 180 0 1
device=none
T 58000 44500 5 10 1 1 180 7 1
value=Output A
}
C 55200 51000 1 180 0 input-2.sym
{
T 55600 51200 5 10 1 0 180 0 1
net=OUTPUT_B:1
T 54600 50300 5 10 0 0 180 0 1
device=none
T 54700 50900 5 10 1 1 180 7 1
value=Output B
}
N 52900 49700 52900 50900 4
N 52900 50900 53800 50900 4
C 57100 42900 1 0 0 connector1-2.sym
{
T 57800 43800 5 10 1 1 0 6 1
refdes=CONN501
T 57400 43750 5 10 0 0 0 0 1
device=CONNECTOR_1
T 57400 43950 5 10 0 0 0 0 1
footprint=CONNECTOR 1 1
T 57100 42900 5 10 1 1 0 0 1
value=OUT A
}
N 57100 43300 56600 43300 4
N 56600 43300 56600 44500 4
C 57700 48300 1 90 0 stereo_jack-1.sym
{
T 55400 48595 5 10 0 2 90 0 1
device=CONNECTOR
T 57700 48300 5 10 0 0 0 0 1
graphical=1
T 56000 48595 5 10 1 1 90 0 1
refdes=K502
}
C 57700 45600 1 90 0 stereo_jack-1.sym
{
T 55400 45895 5 10 0 2 90 0 1
device=CONNECTOR
T 57700 45600 5 10 0 0 0 0 1
graphical=1
T 56000 45895 5 10 1 1 90 0 1
refdes=K501
}
N 53500 49700 53500 47800 4
N 53500 47800 57200 47800 4
N 57200 47800 57200 48300 4
N 56900 48300 56900 48000 4
N 53700 48000 56900 48000 4
N 53700 48000 53700 49300 4
N 56600 44500 56600 45000 4
N 56600 45000 57200 45000 4
N 57200 45000 57200 45600 4