v 20110115 2
C 44900 38500 0 0 0 title-A2.sym
C 52600 42200 1 0 0 dual-opamp-1.sym
{
T 52800 44500 5 10 0 0 0 0 1
device=DUAL_OPAMP
T 53300 42300 5 10 1 1 0 0 1
refdes=IC501
T 52800 44100 5 10 0 0 0 0 1
footprint=DIL 8 300
T 52800 44700 5 10 0 0 0 0 1
symversion=0.2
T 52600 42200 5 10 0 0 0 0 1
slot=2
}
C 52600 49800 1 0 0 dual-opamp-1.sym
{
T 52800 52100 5 10 0 0 0 0 1
device=DUAL_OPAMP
T 53300 49900 5 10 1 1 0 0 1
refdes=IC501
T 52800 51700 5 10 0 0 0 0 1
footprint=DIL 8 300
T 52800 52300 5 10 0 0 0 0 1
symversion=0.2
T 52600 49800 5 10 0 0 0 0 1
slot=1
}
C 53300 50500 1 0 0 capacitor-1.sym
{
T 53500 51200 5 10 0 0 0 0 1
device=CAPACITOR
T 53500 51000 5 10 1 1 0 0 1
refdes=C501
T 53500 51400 5 10 0 0 0 0 1
symversion=0.1
T 53300 50500 5 10 1 1 0 0 1
value=100n
T 53300 50500 5 10 0 1 0 0 1
footprint=CK06_type_capacitor
}
C 52900 50800 1 0 0 vcc-2.sym
C 52800 49000 1 0 0 vcc-minus-1.sym
C 52200 49200 1 0 0 gnd-1.sym
C 47000 50700 1 0 0 input-2.sym
{
T 47000 50900 5 10 1 0 0 0 1
net=BLEND:2
T 47600 51400 5 10 0 0 0 0 1
device=none
T 47500 50800 5 10 1 1 0 7 1
value=BLEND B
}
C 47000 49900 1 0 0 input-2.sym
{
T 47000 50100 5 10 1 0 0 0 1
net=BLEND:1
T 47600 50600 5 10 0 0 0 0 1
device=none
T 47500 50000 5 10 1 1 0 7 1
value=BLEND A
}
C 56400 49500 1 270 0 resistor-2.sym
{
T 56750 49100 5 10 0 0 270 0 1
device=RESISTOR
T 56700 49000 5 10 1 1 0 0 1
refdes=R501
T 56700 48800 5 10 1 1 0 0 1
value=22k
T 56400 49500 5 10 0 1 0 0 1
footprint=R025
}
N 56500 49700 56500 49500 4
C 56900 47600 1 0 0 vcc-minus-1.sym
C 56200 47600 1 0 0 vcc-minus-1.sym
N 56500 48200 56500 48600 4
C 57000 50300 1 180 0 resistor-variable-2.sym
{
T 56650 50800 5 10 1 1 180 0 1
refdes=R502
T 56200 49400 5 10 0 1 180 0 1
device=VARIABLE_RESISTOR
T 56300 50400 5 10 1 1 0 0 1
value=100k?
T 57000 50300 5 10 0 1 0 0 1
footprint=TO247
}
N 57000 50200 57200 50200 4
N 57200 50200 57200 48200 4
N 56500 49600 59100 49600 4
C 54900 50000 1 0 0 capacitor-4.sym
{
T 55100 51100 5 10 0 0 0 0 1
device=POLARIZED_CAPACITOR
T 55100 50500 5 10 1 1 0 0 1
refdes=C502
T 55100 50700 5 10 0 0 0 0 1
symversion=0.1
T 54900 50000 5 10 1 1 0 0 1
value=1u
T 54900 50000 5 10 0 1 0 0 1
footprint=RCY100P
}
T 56700 48500 9 10 1 0 0 0 1
taper resistor
C 48800 50600 1 0 0 capacitor-4.sym
{
T 49000 51700 5 10 0 0 0 0 1
device=POLARIZED_CAPACITOR
T 49000 51100 5 10 1 1 0 0 1
refdes=C503
T 49000 51300 5 10 0 0 0 0 1
symversion=0.1
T 48800 50600 5 10 1 1 0 0 1
value=1u
T 48800 50600 5 10 0 1 0 0 1
footprint=RCY100P
}
N 48800 50800 48400 50800 4
C 48800 49800 1 0 0 capacitor-4.sym
{
T 49000 50900 5 10 0 0 0 0 1
device=POLARIZED_CAPACITOR
T 49000 50300 5 10 1 1 0 0 1
refdes=C504
T 49000 50500 5 10 0 0 0 0 1
symversion=0.1
T 48800 49800 5 10 1 1 0 0 1
value=1u
T 48800 49800 5 10 0 1 0 0 1
footprint=RCY100P
}
N 48800 50000 48400 50000 4
N 53100 50600 53100 50800 4
N 53100 50700 53300 50700 4
N 53100 49600 53100 49800 4
N 52600 50000 52300 50000 4
N 52300 50000 52300 49500 4
C 52800 41400 1 0 0 vcc-minus-1.sym
C 52900 43200 1 0 0 vcc-2.sym
N 53100 43200 53100 43000 4
N 53100 42000 53100 42200 4
C 52200 41600 1 0 0 gnd-1.sym
N 52300 42400 52300 41900 4
N 52600 42400 52300 42400 4
N 53100 49700 54600 49700 4
N 54600 49700 54600 50700 4
N 54600 50700 54200 50700 4
C 51000 50900 1 180 0 resistor-2.sym
{
T 50600 50550 5 10 0 0 180 0 1
device=RESISTOR
T 50700 51100 5 10 1 1 180 0 1
refdes=R503
T 50900 50900 5 10 1 1 0 0 1
value=100k
T 51000 50900 5 10 0 1 0 0 1
footprint=R025
}
C 51000 50100 1 180 0 resistor-2.sym
{
T 50600 49750 5 10 0 0 180 0 1
device=RESISTOR
T 50700 49800 5 10 1 1 180 0 1
refdes=R504
T 50900 50100 5 10 1 1 0 0 1
value=100k
T 51000 50100 5 10 0 1 0 0 1
footprint=R025
}
N 50100 50800 49700 50800 4
N 50100 50000 49700 50000 4
N 51000 50800 51600 50800 4
N 51600 50000 51600 50800 4
N 51600 50000 51000 50000 4
N 51600 50400 52600 50400 4
C 53800 51900 1 180 0 resistor-2.sym
{
T 53400 51550 5 10 0 0 180 0 1
device=RESISTOR
T 53500 52100 5 10 1 1 180 0 1
refdes=R505
T 53700 51900 5 10 1 1 0 0 1
value=100k
T 53800 51900 5 10 0 1 0 0 1
footprint=R025
}
N 52900 51800 52300 51800 4
N 52300 51800 52300 50400 4
N 53800 51800 54300 51800 4
N 54300 51800 54300 50200 4
N 53600 50200 54900 50200 4
T 53600 52200 9 10 1 0 0 0 1
lower to ~2k?
N 49900 43200 49900 50000 4
N 49900 43200 50100 43200 4
C 51000 43300 1 180 0 resistor-2.sym
{
T 50600 42950 5 10 0 0 180 0 1
device=RESISTOR
T 50700 43000 5 10 1 1 180 0 1
refdes=R506
T 50900 43300 5 10 1 1 0 0 1
value=100k
T 51000 43300 5 10 0 1 0 0 1
footprint=R025
}
N 51600 42800 52600 42800 4
C 53800 44100 1 180 0 resistor-2.sym
{
T 53400 43750 5 10 0 0 180 0 1
device=RESISTOR
T 53500 44300 5 10 1 1 180 0 1
refdes=R507
T 53700 44100 5 10 1 1 0 0 1
value=100k
T 53800 44100 5 10 0 1 0 0 1
footprint=R025
}
N 52300 42800 52300 44000 4
N 52300 44000 52900 44000 4
N 53800 44000 54300 44000 4
N 54300 44000 54300 42600 4
N 53600 42600 54700 42600 4
C 58100 42700 1 180 0 input-2.sym
{
T 58100 42500 5 10 1 0 180 0 1
net=OUT:A:1
T 57500 42000 5 10 0 0 180 0 1
device=none
T 57600 42600 5 10 1 1 180 7 1
value=A/Mono Output
}
C 51600 53100 1 180 0 input-2.sym
{
T 51600 52900 5 10 1 0 180 0 1
net=OUT:B:1
T 51000 52400 5 10 0 0 180 0 1
device=none
T 51100 53000 5 10 1 1 180 7 1
value=B Output
}
N 49900 50800 49900 53000 4
N 49900 53000 50200 53000 4
T 50200 53400 9 10 1 0 0 0 2
BLEND:2 is an opamp output.
Needs 100k to ground?
C 51000 42500 1 180 0 resistor-2.sym
{
T 50600 42150 5 10 0 0 180 0 1
device=RESISTOR
T 50700 42200 5 10 1 1 180 0 1
refdes=R508
T 50900 42500 5 10 1 1 0 0 1
value=100k
T 51000 42500 5 10 0 1 0 0 1
footprint=R025
}
N 51600 42400 51600 43200 4
N 51000 43200 51600 43200 4
N 51000 42400 51600 42400 4
N 48900 42400 50100 42400 4
C 47500 42300 1 0 0 input-2.sym
{
T 47500 42500 5 10 1 0 0 0 1
net=JACKSWITCH:B:1
T 48100 43000 5 10 0 0 0 0 1
device=none
T 48000 42400 5 10 1 1 0 7 1
value=from B Jack switch
}
C 60300 49400 1 0 0 dual-opamp-1.sym
{
T 60500 51700 5 10 0 0 0 0 1
device=DUAL_OPAMP
T 61000 49500 5 10 1 1 0 0 1
refdes=IC502
T 60500 51300 5 10 0 0 0 0 1
footprint=DIL 8 300
T 60500 51900 5 10 0 0 0 0 1
symversion=0.2
T 60300 49400 5 10 0 0 0 0 1
slot=1
}
C 60300 45300 1 0 0 dual-opamp-1.sym
{
T 60500 47600 5 10 0 0 0 0 1
device=DUAL_OPAMP
T 61000 45400 5 10 1 1 0 0 1
refdes=IC502
T 60500 47200 5 10 0 0 0 0 1
footprint=DIL 8 300
T 60500 47800 5 10 0 0 0 0 1
symversion=0.2
T 60300 45300 5 10 0 0 0 0 1
slot=2
}
C 63000 49600 1 0 0 capacitor-1.sym
{
T 63200 50300 5 10 0 0 0 0 1
device=CAPACITOR
T 63400 50100 5 10 1 1 0 0 1
refdes=C505
T 63200 50500 5 10 0 0 0 0 1
symversion=0.1
T 63300 49400 5 10 1 1 0 0 1
value=22u
T 63000 49600 5 10 0 1 0 0 1
footprint=RCY100
}
N 63000 49800 61300 49800 4
C 65100 49900 1 180 0 resistor-2.sym
{
T 64700 49550 5 10 0 0 180 0 1
device=RESISTOR
T 64800 50100 5 10 1 1 180 0 1
refdes=R509
T 64500 49500 5 10 1 1 0 0 1
value=100
T 65100 49900 5 10 0 1 0 0 1
footprint=R025
}
N 64200 49800 63900 49800 4
C 65100 45800 1 180 0 resistor-2.sym
{
T 64700 45450 5 10 0 0 180 0 1
device=RESISTOR
T 64800 46000 5 10 1 1 180 0 1
refdes=R510
T 64500 45400 5 10 1 1 0 0 1
value=100
T 65100 45800 5 10 0 1 0 0 1
footprint=R025
}
N 64200 45700 63900 45700 4
C 63000 45500 1 0 0 capacitor-1.sym
{
T 63400 46000 5 10 1 1 0 0 1
refdes=C506
T 63300 45300 5 10 1 1 0 0 1
value=22u
T 63200 46200 5 10 0 0 0 0 1
device=CAPACITOR
T 63200 46400 5 10 0 0 0 0 1
symversion=0.1
T 63000 45500 5 10 0 1 0 0 1
footprint=RCY100
}
N 63000 45700 61300 45700 4
C 66600 49900 1 180 0 input-2.sym
{
T 66600 49700 5 10 1 0 180 0 1
net=OUT:XLR:1
T 66000 49200 5 10 0 0 180 0 1
device=none
T 66100 49800 5 10 1 1 180 7 1
value=XLR out
}
C 66600 45800 1 180 0 input-2.sym
{
T 66600 45600 5 10 1 0 180 0 1
net=OUT:XLR:2
T 66000 45100 5 10 0 0 180 0 1
device=none
T 66100 45700 5 10 1 1 180 7 1
value=XLR out
}
N 65200 45700 65100 45700 4
N 65200 49800 65100 49800 4
C 60000 49700 1 180 0 resistor-2.sym
{
T 59600 49350 5 10 0 0 180 0 1
device=RESISTOR
T 59700 49900 5 10 1 1 180 0 1
refdes=R511
T 59400 49300 5 10 1 1 0 0 1
value=2k2
T 60000 49700 5 10 0 1 0 0 1
footprint=R025
}
N 60300 49600 60000 49600 4
N 60300 50000 60000 50000 4
N 60000 50000 60000 51400 4
N 60000 51400 62300 51400 4
N 62300 51400 62300 49800 4
C 60600 50600 1 0 0 vcc-2.sym
C 60600 46300 1 0 0 vcc-2.sym
C 60500 44500 1 0 0 vcc-minus-1.sym
C 60500 48600 1 0 0 vcc-minus-1.sym
N 60800 46100 60800 46300 4
C 61000 50200 1 0 0 capacitor-1.sym
{
T 61200 50900 5 10 0 0 0 0 1
device=CAPACITOR
T 61200 50700 5 10 1 1 0 0 1
refdes=C507
T 61200 51100 5 10 0 0 0 0 1
symversion=0.1
T 61000 50200 5 10 1 1 0 0 1
value=100n
T 61000 50200 5 10 0 1 0 0 1
footprint=CK06_type_capacitor
}
N 60800 50600 60800 50200 4
N 60800 50400 61000 50400 4
N 60800 49200 60800 49400 4
N 60800 49300 62100 49300 4
N 62100 49300 62100 50400 4
N 62100 50400 61900 50400 4
N 60800 45100 60800 45300 4
C 61200 47400 1 180 0 resistor-2.sym
{
T 60800 47050 5 10 0 0 180 0 1
device=RESISTOR
T 60900 47600 5 10 1 1 180 0 1
refdes=R512
T 60600 47000 5 10 1 1 0 0 1
value=100k
T 61200 47400 5 10 0 1 0 0 1
footprint=R025
}
C 59900 44700 1 0 0 gnd-1.sym
N 60300 45500 60000 45500 4
N 60000 45500 60000 45000 4
N 60300 47300 60000 47300 4
N 60000 45900 60000 48000 4
N 60000 45900 60300 45900 4
N 61200 47300 61600 47300 4
N 61600 47300 61600 45700 4
C 61200 48100 1 180 0 resistor-2.sym
{
T 60800 47750 5 10 0 0 180 0 1
device=RESISTOR
T 60900 48300 5 10 1 1 180 0 1
refdes=R513
T 60600 47700 5 10 1 1 0 0 1
value=100k
T 61200 48100 5 10 0 1 0 0 1
footprint=R025
}
N 62300 49800 62300 48000 4
N 62300 48000 61200 48000 4
N 60300 48000 60000 48000 4
C 62800 46000 1 90 0 zener-2.sym
{
T 62300 46400 5 10 0 0 90 0 1
device=ZENER_DIODE
T 62500 46300 5 10 1 1 90 0 1
refdes=Z501
T 62800 46000 5 10 0 1 0 0 1
footprint=ALF300
}
C 62800 50100 1 90 0 zener-2.sym
{
T 62300 50500 5 10 0 0 90 0 1
device=ZENER_DIODE
T 62500 50400 5 10 1 1 90 0 1
refdes=Z502
T 62800 50100 5 10 0 1 0 0 1
footprint=ALF300
}
N 62700 46000 62700 45700 4
N 62700 50100 62700 49800 4
C 62500 51200 1 0 0 vcc-2.sym
N 62700 51200 62700 50900 4
C 62500 47100 1 0 0 vcc-2.sym
N 62700 47100 62700 46800 4
T 58800 52400 9 10 1 0 0 0 1
DI box
B 58800 44200 8400 8000 3 0 0 0 -1 -1 0 -1 -1 -1 -1 -1
C 54700 42400 1 0 0 capacitor-4.sym
{
T 54900 43500 5 10 0 0 0 0 1
device=POLARIZED_CAPACITOR
T 54900 42900 5 10 1 1 0 0 1
refdes=C508
T 54900 43100 5 10 0 0 0 0 1
symversion=0.1
T 54700 42400 5 10 1 1 0 0 1
value=1u
T 54700 42400 5 10 0 1 0 0 1
footprint=RCY100P
}
C 55800 42300 1 270 0 resistor-2.sym
{
T 56150 41900 5 10 0 0 270 0 1
device=RESISTOR
T 56100 41800 5 10 1 1 0 0 1
refdes=R514
T 56100 41600 5 10 1 1 0 0 1
value=100k
T 55800 42300 5 10 0 1 0 0 1
footprint=R025
}
C 55600 40600 1 0 0 vcc-minus-1.sym
N 55600 42600 56700 42600 4
N 55900 42600 55900 42300 4
N 55900 41400 55900 41200 4
T 47400 41900 9 10 1 0 0 0 1
doesn't this need a pulldown?
T 47400 39700 9 10 1 0 0 0 9
When there's no cable connected to output B,
the signal on JACKSWITCH:B:1 is the same as
the signal on OUT:B:1. The circuit will mix A
and B to one mono signal.

When a cable is connected, i.e. when stereo
output is requested, there is no signal on
JACKSWITCH:B:1. The total output of the opamp
will be BLEND:1 (A).
N 55800 50200 56100 50200 4