initial commit

1 files changed, 225 insertions, 0 deletions

diff --git a/gschem/preamp_bass.sch b/gschem/preamp_bass.sch
new file mode 100644
index 0000000..579ebb9
--- /dev/null
+++ b/gschem/preamp_bass.sch
@@ -0,0 +1,225 @@
+v 20110115 2
+C 40000 40000 0 0 0 title-B.sym
+C 46100 47700 1 0 1 capacitor-4.sym
+{
+T 45900 48800 5 10 0 0 0 6 1
+device=POLARIZED_CAPACITOR
+T 45800 48200 5 10 1 1 0 6 1
+refdes=C4
+T 45900 48400 5 10 0 0 0 6 1
+symversion=0.1
+T 45500 47400 5 10 1 1 0 0 1
+value=10u
+}
+C 48200 46500 1 90 0 capacitor-4.sym
+{
+T 47100 46700 5 10 0 0 90 0 1
+device=POLARIZED_CAPACITOR
+T 47700 47200 5 10 1 1 180 0 1
+refdes=C3
+T 47500 46700 5 10 0 0 90 0 1
+symversion=0.1
+T 47300 46800 5 10 1 1 0 0 1
+value=3.3u
+}
+C 46500 48200 1 90 0 resistor-2.sym
+{
+T 46150 48600 5 10 0 0 90 0 1
+device=RESISTOR
+T 46200 48900 5 10 1 1 180 0 1
+refdes=R8
+T 45900 48600 5 10 1 1 0 0 1
+value=10k
+}
+C 46500 46700 1 90 0 resistor-2.sym
+{
+T 46150 47100 5 10 0 0 90 0 1
+device=RESISTOR
+T 46200 47300 5 10 1 1 180 0 1
+refdes=R7
+T 45900 47000 5 10 1 1 0 0 1
+value=10k
+}
+C 47600 48000 1 180 0 resistor-2.sym
+{
+T 47200 47650 5 10 0 0 180 0 1
+device=RESISTOR
+T 47300 48200 5 10 1 1 180 0 1
+refdes=R6
+T 47000 47600 5 10 1 1 0 0 1
+value=5.1M
+}
+N 46100 47900 46700 47900 4
+N 45200 47900 44800 47900 4
+N 44800 47900 44800 46500 4
+N 46400 46700 46400 46500 4
+N 46400 49100 46400 49800 4
+C 45500 44700 1 0 0 capacitor-1.sym
+{
+T 45700 45400 5 10 0 0 0 0 1
+device=CAPACITOR
+T 45800 45200 5 10 1 1 0 0 1
+refdes=C1
+T 45700 45600 5 10 0 0 0 0 1
+symversion=0.1
+T 45700 44500 5 10 1 1 0 0 1
+value=0.47u
+}
+C 48000 43500 1 90 0 capacitor-1.sym
+{
+T 47300 43700 5 10 0 0 90 0 1
+device=CAPACITOR
+T 48300 44200 5 10 1 1 180 0 1
+refdes=C2
+T 47100 43700 5 10 0 0 90 0 1
+symversion=0.1
+T 48100 43800 5 10 1 1 0 0 1
+value=10p
+}
+C 48300 47700 1 0 0 JFET_N-Channel-1.sym
+{
+T 48650 48500 5 10 1 1 0 6 1
+model=J201
+T 48300 49750 5 10 0 0 0 0 1
+device=JFET N-Channel
+}
+N 47600 47900 48300 47900 4
+N 48000 47400 48000 47900 4
+C 48300 44700 1 0 0 JFET_N-Channel-1.sym
+{
+T 48650 45500 5 10 1 1 0 6 1
+model=J201
+T 48300 46750 5 10 0 0 0 0 1
+device=JFET N-Channel
+}
+C 50000 45700 1 0 0 JFET_N-Channel-1.sym
+{
+T 50850 46000 5 10 1 1 0 6 1
+model=J201
+T 50000 47750 5 10 0 0 0 0 1
+device=JFET N-Channel
+}
+N 48700 47700 48700 45900 4
+N 48000 45900 50000 45900 4
+N 48000 45900 48000 46500 4
+N 49500 45900 49500 46300 4
+N 48700 45900 48700 45500 4
+C 49400 49800 1 270 0 resistor-2.sym
+{
+T 49750 49400 5 10 0 0 270 0 1
+device=RESISTOR
+T 49700 49400 5 10 1 1 0 0 1
+refdes=R9
+T 49700 49200 5 10 1 1 0 0 1
+value=100
+}
+C 50900 48800 1 180 1 capacitor-4.sym
+{
+T 51100 47700 5 10 0 0 180 6 1
+device=POLARIZED_CAPACITOR
+T 51200 49000 5 10 1 1 180 6 1
+refdes=C5
+T 51100 48100 5 10 0 0 180 6 1
+symversion=0.1
+T 51100 48200 5 10 1 1 0 0 1
+value=100u
+}
+N 48700 48500 48700 48600 4
+N 48700 48600 50900 48600 4
+N 49500 48900 49500 48600 4
+N 50400 46500 50400 48600 4
+C 50300 44500 1 270 0 resistor-2.sym
+{
+T 50650 44100 5 10 0 0 270 0 1
+device=RESISTOR
+T 50600 44000 5 10 1 1 0 0 1
+refdes=R5
+T 50600 43800 5 10 1 1 0 0 1
+value=10k
+}
+C 48600 44500 1 270 0 resistor-2.sym
+{
+T 48950 44100 5 10 0 0 270 0 1
+device=RESISTOR
+T 48900 44000 5 10 1 1 0 0 1
+refdes=R2
+T 48900 43800 5 10 1 1 0 0 1
+value=6k8
+}
+C 49400 44500 1 270 0 resistor-2.sym
+{
+T 49750 44100 5 10 0 0 270 0 1
+device=RESISTOR
+T 49700 44000 5 10 1 1 0 0 1
+refdes=R3
+T 49700 43800 5 10 1 1 0 0 1
+value=220k
+}
+N 49500 45900 49500 44500 4
+N 50400 45700 50400 44500 4
+N 48700 44700 48700 44500 4
+N 46400 44900 48300 44900 4
+N 47800 44900 47800 44400 4
+C 46800 44500 1 270 0 resistor-2.sym
+{
+T 47150 44100 5 10 0 0 270 0 1
+device=RESISTOR
+T 46500 44000 5 10 1 1 0 0 1
+refdes=R1
+T 46400 43800 5 10 1 1 0 0 1
+value=10M
+}
+N 46900 44500 46900 44900 4
+C 43600 44800 1 0 0 input-2.sym
+{
+T 43700 44500 5 10 1 0 0 0 1
+net=INPUT:2
+T 44200 45500 5 10 0 0 0 0 1
+device=none
+T 44100 44900 5 10 1 1 0 7 1
+value=BASS
+}
+N 45000 44900 45500 44900 4
+C 46200 49800 1 0 0 vcc-2.sym
+C 49300 49800 1 0 0 vcc-2.sym
+C 49300 47400 1 0 0 vcc-2.sym
+C 44500 45900 1 0 0 vcc-minus-1.sym
+C 46100 45900 1 0 0 vcc-minus-1.sym
+C 46600 42900 1 0 0 vcc-minus-1.sym
+C 47500 42900 1 0 0 vcc-minus-1.sym
+C 48400 42900 1 0 0 vcc-minus-1.sym
+C 49200 42900 1 0 0 vcc-minus-1.sym
+C 50100 42900 1 0 0 vcc-minus-1.sym
+C 51700 47400 1 0 0 vcc-minus-1.sym
+N 51800 48600 52000 48600 4
+N 52000 48600 52000 48000 4
+N 46400 47900 46400 48200 4
+N 46400 47600 46400 47900 4
+N 46900 43500 46900 43600 4
+N 48700 43500 48700 43600 4
+N 49500 43500 49500 43600 4
+N 50400 43500 50400 43600 4
+C 52900 45000 1 180 0 input-2.sym
+{
+T 53000 44700 5 10 1 0 180 0 1
+net=PREAMP:2
+T 52300 44300 5 10 0 0 180 0 1
+device=none
+T 52400 44900 5 10 1 1 180 7 1
+value=BASS OUTPUT
+}
+N 51500 44900 50400 44900 4
+N 49500 47200 49500 47400 4
+C 49400 47200 1 270 0 resistor-2.sym
+{
+T 49750 46800 5 10 0 0 270 0 1
+device=RESISTOR
+T 49700 46700 5 10 1 1 0 0 1
+refdes=R4
+T 49700 46500 5 10 1 1 0 0 1
+value=220k
+}
+T 50200 40900 9 16 1 0 0 0 1
+Preamp (Bass)
+T 52200 44000 9 10 1 0 0 0 1
+TODO: need coupling capacitor?