remove DI box

I don't really need a DI box all the time. It complicates the circuit,
draws more power, and requires more space.

An external DI box can be connected to the mono output for the same
result.

1 files changed, 130 insertions, 456 deletions

diff --git a/gschem/outputs.sch b/gschem/outputs.sch
index 7404262..a2adbb9 100644
--- a/gschem/outputs.sch
+++ b/gschem/outputs.sch
@@ -1,187 +1,53 @@
 v 20110115 2
 C 44900 38500 0 0 0 title-A2.sym
-C 52600 44600 1 0 0 dual-opamp-1.sym
+C 47100 49600 1 0 0 input-2.sym
 {
-T 52800 46900 5 10 0 0 0 0 1
-device=DUAL_OPAMP
-T 53300 44700 5 10 1 1 0 0 1
-refdes=IC501
-T 52800 46500 5 10 0 0 0 0 1
-footprint=DIL 8 300
-T 52800 47100 5 10 0 0 0 0 1
-symversion=0.2
-T 52600 44600 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
+T 47100 49800 5 10 1 0 0 0 1
 net=BASS:1
-T 47600 51400 5 10 0 0 0 0 1
+T 47700 50300 5 10 0 0 0 0 1
 device=none
-T 47500 50800 5 10 1 1 0 7 1
+T 47600 49700 5 10 1 1 0 7 1
 value=Bass
 }
-C 47000 49900 1 0 0 input-2.sym
+C 47000 45500 1 0 0 input-2.sym
 {
-T 47000 50100 5 10 1 0 0 0 1
+T 47000 45700 5 10 1 0 0 0 1
 net=MELODY:1
-T 47600 50600 5 10 0 0 0 0 1
+T 47600 46200 5 10 0 0 0 0 1
 device=none
-T 47500 50000 5 10 1 1 0 7 1
+T 47500 45600 5 10 1 1 0 7 1
 value=Melody
 }
-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=100k
-T 56400 49500 5 10 0 1 0 0 1
-footprint=R025
-}
-N 56500 49500 56500 50200 4
-C 56200 47600 1 0 0 vcc-minus-1.sym
-N 56500 48200 56500 48600 4
-N 56500 49600 59100 49600 4
-C 54900 50000 1 0 0 capacitor-4.sym
+C 48900 49500 1 0 0 capacitor-4.sym
 {
-T 55100 51100 5 10 0 0 0 0 1
+T 49100 50600 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 55800 50900 9 10 1 0 0 0 2
-TODO: find the right value to
-prevent overloading of the DI box
-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
+T 49100 50000 5 10 1 1 0 0 1
 refdes=C503
-T 49000 51300 5 10 0 0 0 0 1
+T 49100 50200 5 10 0 0 0 0 1
 symversion=0.1
-T 48800 50600 5 10 1 1 0 0 1
+T 48900 49500 5 10 1 1 0 0 1
 value=1u
-T 48800 50600 5 10 0 1 0 0 1
+T 48900 49500 5 10 0 1 0 0 1
 footprint=RCY100P
 }
-N 48800 50800 48400 50800 4
-C 48800 49800 1 0 0 capacitor-4.sym
+N 48900 49700 48500 49700 4
+C 48800 45400 1 0 0 capacitor-4.sym
 {
-T 49000 50900 5 10 0 0 0 0 1
+T 49000 46500 5 10 0 0 0 0 1
 device=POLARIZED_CAPACITOR
-T 49000 50300 5 10 1 1 0 0 1
+T 49000 45900 5 10 1 1 0 0 1
 refdes=C504
-T 49000 50500 5 10 0 0 0 0 1
+T 49000 46100 5 10 0 0 0 0 1
 symversion=0.1
-T 48800 49800 5 10 1 1 0 0 1
+T 48800 45400 5 10 1 1 0 0 1
 value=1u
-T 48800 49800 5 10 0 1 0 0 1
+T 48800 45400 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 43800 1 0 0 vcc-minus-1.sym
-C 52900 45600 1 0 0 vcc-2.sym
-N 53100 45600 53100 45400 4
-N 53100 44400 53100 44600 4
-C 52200 44000 1 0 0 gnd-1.sym
-N 52300 44800 52300 44300 4
-N 52600 44800 52300 44800 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 45600 49900 50000 4
-N 49900 45600 50100 45600 4
+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
@@ -193,26 +59,9 @@ value=100k
 T 51000 45700 5 10 0 1 0 0 1
 footprint=R025
 }
-N 51600 45200 52600 45200 4
-C 53800 46500 1 180 0 resistor-2.sym
-{
-T 53400 46150 5 10 0 0 180 0 1
-device=RESISTOR
-T 53500 46700 5 10 1 1 180 0 1
-refdes=R507
-T 53700 46500 5 10 1 1 0 0 1
-value=100k
-T 53800 46500 5 10 0 1 0 0 1
-footprint=R025
-}
-N 52300 45200 52300 46400 4
-N 52300 46400 52900 46400 4
-N 53800 46400 54300 46400 4
-N 54300 46400 54300 45000 4
-N 53600 45000 54700 45000 4
-N 49900 50800 49900 54200 4
-N 49900 54200 52200 54200 4
-T 47300 52600 9 10 1 0 0 0 2
+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
@@ -229,342 +78,167 @@ footprint=R025
 N 51600 44800 51600 45600 4
 N 51000 45600 51600 45600 4
 N 51000 44800 51600 44800 4
-N 48900 44800 50100 44800 4
-C 47500 44700 1 0 0 input-2.sym
+N 48400 44800 50100 44800 4
+C 47000 44700 1 0 0 input-2.sym
 {
-T 47500 44900 5 10 1 0 0 0 1
+T 47000 44900 5 10 1 0 0 0 1
 net=JACKSWITCH_B:1
-T 48100 45400 5 10 0 0 0 0 1
+T 47600 45400 5 10 0 0 0 0 1
 device=none
-T 48000 44800 5 10 1 1 0 7 1
+T 47500 44800 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 65000 49900 1 180 0 resistor-2.sym
-{
-T 64600 49550 5 10 0 0 180 0 1
-device=RESISTOR
-T 64700 50100 5 10 1 1 180 0 1
-refdes=R509
-T 64400 49500 5 10 1 1 0 0 1
-value=100
-T 65000 49900 5 10 0 1 0 0 1
-footprint=R025
-}
-N 64100 49800 63900 49800 4
-C 65000 45800 1 180 0 resistor-2.sym
-{
-T 64600 45450 5 10 0 0 180 0 1
-device=RESISTOR
-T 64700 46000 5 10 1 1 180 0 1
-refdes=R510
-T 64400 45400 5 10 1 1 0 0 1
-value=100
-T 65000 45800 5 10 0 1 0 0 1
-footprint=R025
-}
-N 64100 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
-N 65000 45700 65200 45700 4
-N 65000 49800 65200 49800 4
-C 60000 49700 1 180 0 resistor-2.sym
+C 54600 44600 1 0 0 capacitor-4.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 44800 1 0 0 capacitor-4.sym
-{
-T 54900 45900 5 10 0 0 0 0 1
+T 54800 45700 5 10 0 0 0 0 1
 device=POLARIZED_CAPACITOR
-T 54900 45300 5 10 1 1 0 0 1
+T 54800 45100 5 10 1 1 0 0 1
 refdes=C508
-T 54900 45500 5 10 0 0 0 0 1
+T 54800 45300 5 10 0 0 0 0 1
 symversion=0.1
-T 54700 44800 5 10 1 1 0 0 1
+T 54600 44600 5 10 1 1 0 0 1
 value=1u
-T 54700 44800 5 10 0 1 0 0 1
+T 54600 44600 5 10 0 1 0 0 1
 footprint=RCY100P
 }
-C 55800 44700 1 270 0 resistor-2.sym
+C 55700 44500 1 270 0 resistor-2.sym
 {
-T 56150 44300 5 10 0 0 270 0 1
+T 56050 44100 5 10 0 0 270 0 1
 device=RESISTOR
-T 56100 44200 5 10 1 1 0 0 1
+T 56000 44000 5 10 1 1 0 0 1
 refdes=R514
-T 56100 44000 5 10 1 1 0 0 1
+T 56000 43800 5 10 1 1 0 0 1
 value=100k
-T 55800 44700 5 10 0 1 0 0 1
+T 55700 44500 5 10 0 1 0 0 1
 footprint=R025
 }
-C 55600 43000 1 0 0 vcc-minus-1.sym
-N 55600 45000 56900 45000 4
-N 55900 45000 55900 44700 4
-N 55900 43800 55900 43600 4
-T 47400 44300 9 10 1 0 0 0 1
+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 9
+T 47300 42000 9 10 1 0 0 0 8
 When there's no cable connected to output B,
-the signal on JACKSWITCH_B:1 is the same as
-the signal on OUT_B. The circuit will mix the
-melody and bass signals to one mono signal.
+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. The total output of the opamp
-will be BLEND_1:1 (A).
-N 55800 50200 56500 50200 4
-T 51900 47200 9 10 1 0 0 0 1
-IDEA: replace IC501 with two JFET followers.
-C 56900 44200 1 0 0 connector2-2.sym
+JACKSWITCH_B:1.
+C 56800 44000 1 0 0 connector2-2.sym
 {
-T 57600 45500 5 10 1 1 0 6 1
+T 57500 45300 5 10 1 1 0 6 1
 refdes=CONN501
-T 57200 45450 5 10 0 0 0 0 1
+T 57100 45250 5 10 0 0 0 0 1
 device=CONNECTOR_2
-T 57200 45650 5 10 0 0 0 0 1
+T 57100 45450 5 10 0 0 0 0 1
 footprint=CONNECTOR 2 1
 }
-C 52200 53000 1 0 0 connector3-2.sym
+C 53400 48500 1 0 0 connector3-2.sym
 {
-T 52900 54700 5 10 1 1 0 6 1
+T 54100 50200 5 10 1 1 0 6 1
 refdes=CONN502
-T 52500 54650 5 10 0 0 0 0 1
+T 53700 50150 5 10 0 0 0 0 1
 device=CONNECTOR_3
-T 52500 54850 5 10 0 0 0 0 1
+T 53700 50350 5 10 0 0 0 0 1
 footprint=CONNECTOR 3 1
 }
-C 65600 47200 1 0 0 connector2-2.sym
-{
-T 66300 48500 5 10 1 1 0 6 1
-refdes=CONN503
-T 65900 48450 5 10 0 0 0 0 1
-device=CONNECTOR_2
-T 65900 48650 5 10 0 0 0 0 1
-footprint=CONNECTOR 2 1
-}
-N 65200 49800 65200 48000 4
-N 65200 48000 65600 48000 4
-N 65200 45700 65200 47600 4
-N 65200 47600 65600 47600 4
-C 56400 43000 1 0 0 vcc-minus-1.sym
-N 56900 44600 56700 44600 4
-N 56700 44600 56700 43600 4
-T 56700 45900 9 10 1 0 0 0 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 50400 53700 1 0 0 input-2.sym
+C 51600 49200 1 0 0 input-2.sym
 {
-T 50000 53500 5 10 1 0 0 0 1
+T 51200 49000 5 10 1 0 0 0 1
 net=JACKSWITCH_B:1
-T 51000 54400 5 10 0 0 0 0 1
+T 52200 49900 5 10 0 0 0 0 1
 device=none
-T 50900 53800 5 10 1 1 0 7 1
+T 52100 49300 5 10 1 1 0 7 1
 value=Jack switch
 }
-T 53100 53800 9 10 1 0 0 0 1
+T 54300 49300 9 10 1 0 0 0 1
 Output B
-N 52200 53800 51800 53800 4
-C 51400 52400 1 0 0 vcc-minus-1.sym
-N 51700 53000 51700 53400 4
-N 51700 53400 52200 53400 4
-T 65800 46700 9 10 1 0 0 0 1
-XLR out
-T 45700 49300 9 10 1 0 0 0 1
+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 54500 40600 1 0 0 tle2426.sym
+C 63200 45200 1 0 0 tle2426.sym
 {
-T 54195 40095 5 10 0 1 0 0 1
+T 62895 44695 5 10 0 1 0 0 1
 device=TLE2426
-T 54200 40300 5 10 0 1 0 0 1
+T 62900 44900 5 10 0 1 0 0 1
 footprint=TO92
-T 54900 41500 5 10 1 1 0 0 1
+T 63600 46100 5 10 1 1 0 0 1
 refdes=U501
 }
-C 54700 39200 1 0 0 vcc-minus-1.sym
-N 55000 39800 55000 40700 4
-C 56600 40800 1 0 0 gnd-1.sym
-N 55500 41100 56700 41100 4
-C 53600 41400 1 0 0 vcc-2.sym
-N 53800 41100 54500 41100 4
-N 53800 40800 53800 41400 4
-C 53600 40800 1 270 0 capacitor-4.sym
+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 62300 46000 1 0 0 vcc-2.sym
+N 62500 45700 63200 45700 4
+N 62500 45400 62500 46000 4
+C 62300 45400 1 270 0 capacitor-4.sym
 {
-T 54700 40600 5 10 0 0 270 0 1
+T 63400 45200 5 10 0 0 270 0 1
 device=POLARIZED_CAPACITOR
-T 54100 40200 5 10 1 1 0 0 1
+T 62800 44800 5 10 1 1 0 0 1
 refdes=C510
-T 54300 40600 5 10 0 0 270 0 1
+T 63000 45200 5 10 0 0 270 0 1
 symversion=0.1
-T 53600 40800 5 10 0 0 0 0 1
+T 62300 45400 5 10 0 0 0 0 1
 footprint=RCY200P
-T 54000 39900 5 10 1 1 0 0 1
+T 62700 44500 5 10 1 1 0 0 1
 value=470uF
 }
-C 55800 40800 1 270 0 capacitor-4.sym
+C 64500 45400 1 270 0 capacitor-4.sym
 {
-T 56900 40600 5 10 0 0 270 0 1
+T 65600 45200 5 10 0 0 270 0 1
 device=POLARIZED_CAPACITOR
-T 56300 40200 5 10 1 1 0 0 1
+T 65000 44800 5 10 1 1 0 0 1
 refdes=C511
-T 56500 40600 5 10 0 0 270 0 1
+T 65200 45200 5 10 0 0 270 0 1
 symversion=0.1
-T 55800 40800 5 10 0 0 0 0 1
+T 64500 45400 5 10 0 0 0 0 1
 footprint=RCY200P
-T 56200 39900 5 10 1 1 0 0 1
+T 64900 44500 5 10 1 1 0 0 1
 value=470uF
 }
-N 56000 41100 56000 40800 4
-C 53500 39200 1 0 0 vcc-minus-1.sym
-C 55700 39200 1 0 0 vcc-minus-1.sym
-N 56000 39800 56000 39900 4
-N 53800 39800 53800 39900 4
-B 53000 38900 4300 3300 3 0 0 0 -1 -1 0 -1 -1 -1 -1 -1
-T 53000 42400 9 10 1 0 0 0 1
+N 64700 45700 64700 45400 4
+C 62200 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 62500 44400 62500 44500 4
+B 61700 43500 4300 3300 3 0 0 0 -1 -1 0 -1 -1 -1 -1 -1
+T 61700 47000 9 10 1 0 0 0 1
 Virtual ground
+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