v 20110115 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 47000 45500 1 0 0 input-2.sym
{
T 47000 45700 5 10 1 0 0 0 1
net=MELODY:1
T 47600 46200 5 10 0 0 0 0 1
device=none
T 47500 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=1u
T 48900 49500 5 10 0 1 0 0 1
footprint=RCY100P
}
N 48900 49700 48500 49700 4
C 48800 45400 1 0 0 capacitor-4.sym
{
T 49000 46500 5 10 0 0 0 0 1
device=POLARIZED_CAPACITOR
T 49000 45900 5 10 1 1 0 0 1
refdes=C504
T 49000 46100 5 10 0 0 0 0 1
symversion=0.1
T 48800 45400 5 10 1 1 0 0 1
value=1u
T 48800 45400 5 10 0 1 0 0 1
footprint=RCY100P
}
N 48800 45600 48400 45600 4
N 49800 49700 53400 49700 4
N 49700 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 52800 45200 4
N 53200 44800 54600 44800 4
T 50000 50400 9 10 1 0 0 0 2
BASS:1 is an opamp output.
Needs 100k to ground?
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 48400 44800 50100 44800 4
C 47000 44700 1 0 0 input-2.sym
{
T 47000 44900 5 10 1 0 0 0 1
net=JACKSWITCH_B:1
T 47600 45400 5 10 0 0 0 0 1
device=none
T 47500 44800 5 10 1 1 0 7 1
value=from B Jack switch
}
C 54600 44600 1 0 0 capacitor-4.sym
{
T 54800 45700 5 10 0 0 0 0 1
device=POLARIZED_CAPACITOR
T 54800 45100 5 10 1 1 0 0 1
refdes=C508
T 54800 45300 5 10 0 0 0 0 1
symversion=0.1
T 54600 44600 5 10 1 1 0 0 1
value=1u
T 54600 44600 5 10 0 1 0 0 1
footprint=RCY100P
}
C 55700 44500 1 270 0 resistor-2.sym
{
T 56050 44100 5 10 0 0 270 0 1
device=RESISTOR
T 56000 44000 5 10 1 1 0 0 1
refdes=R514
T 56000 43800 5 10 1 1 0 0 1
value=100k
T 55700 44500 5 10 0 1 0 0 1
footprint=R025
}
C 55500 42800 1 0 0 vcc-minus-1.sym
N 55500 44800 56800 44800 4
N 55800 44800 55800 44500 4
N 55800 43600 55800 43400 4
T 46900 44300 9 10 1 0 0 0 1
doesn't this need a pulldown?
T 47300 42000 9 10 1 0 0 0 8
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.
C 56800 44000 1 0 0 connector2-2.sym
{
T 57500 45300 5 10 1 1 0 6 1
refdes=CONN501
T 57100 45250 5 10 0 0 0 0 1
device=CONNECTOR_2
T 57100 45450 5 10 0 0 0 0 1
footprint=CONNECTOR 2 1
}
C 53400 48500 1 0 0 connector3-2.sym
{
T 54100 50200 5 10 1 1 0 6 1
refdes=CONN502
T 53700 50150 5 10 0 0 0 0 1
device=CONNECTOR_3
T 53700 50350 5 10 0 0 0 0 1
footprint=CONNECTOR 3 1
}
C 56300 42800 1 0 0 vcc-minus-1.sym
N 56800 44400 56600 44400 4
N 56600 44400 56600 43400 4
T 56600 45700 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 54300 49300 9 10 1 0 0 0 1
Output B
N 53400 49300 53000 49300 4
C 52600 47900 1 0 0 vcc-minus-1.sym
N 52900 48500 52900 48900 4
N 52900 48900 53400 48900 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=100uF
}
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=100uF
}
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 43000 6500 4700 3 0 0 0 -1 -1 0 -1 -1 -1 -1 -1
T 61100 48000 9 10 1 0 0 0 1
Virtual ground and power supply filtering
C 52800 45000 1 0 0 JFET_N-Channel-1.sym
{
T 53150 45800 5 10 1 1 0 6 1
refdes=Q501
T 52800 47050 5 10 0 0 0 0 1
device=JFET N-Channel
T 52800 45000 5 10 0 0 0 0 1
footprint=TO92
}
C 53100 44700 1 270 0 resistor-2.sym
{
T 53450 44300 5 10 0 0 270 0 1
device=RESISTOR
T 53400 44200 5 10 1 1 0 0 1
refdes=R507
T 53400 44000 5 10 1 1 0 0 1
value=4k7 ???
T 53100 44700 5 10 0 1 0 0 1
footprint=R025
}
C 53000 46300 1 0 0 vcc-2.sym
N 53200 46300 53200 45800 4
N 53200 45000 53200 44700 4
C 52900 42800 1 0 0 vcc-minus-1.sym
N 53200 43400 53200 43800 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 42900 1 0 0 gnd-1.sym
N 52200 44700 52200 45200 4
N 52200 43200 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 60700 46300 1 180 0 connector2-2.sym
{
T 60000 45000 5 10 1 1 180 6 1
refdes=CONN503
T 60400 45050 5 10 0 0 180 0 1
device=CONNECTOR_2
T 60400 44850 5 10 0 0 180 0 1
footprint=CONNECTOR 2 1
}
N 60700 45900 61700 45900 4
C 60700 44400 1 0 0 vcc-minus-1.sym
N 60700 45500 61000 45500 4
N 61000 45500 61000 45000 4