Small Clone Chorus
This is a layout for the Small Clone chorus. The layout is based on Tonepads layout but squeezes it slightly to make it easier to fit it in a 1590B enclosure.
This chorus sounds wonderful, and apart from getting hold of an MN3007, which requires some work and might score you a fake one, it uses only fairly standard components. Certainly not anything that should be hard to find.
Layout
Image is 300 dpi.
Components
Capacitors
| Value | Count
|
| 150pF Ceramic | 1
|
| 180pF Ceramic | 1
|
| 470pF Ceramic | 1
|
| 2.7nF | 1
|
| 3.3nF | 1
|
| 4.7nF | 1
|
| 10nF | 2
|
| 15nF | 1
|
| 33nF | 1
|
| 47nF | 1
|
| 1uF E-lyte | 3
|
| 10uF E-lyte | 5
|
| 2.2uF E-lyte | 1
|
| 220uF E-lyte | 1 |
Resistors
| Value | Count
|
| 47R | 1
|
| 1K | 2
|
| 3.3K | 1
|
| 6.8K | 2
|
| 10K | 6
|
| 12K | 1
|
| 20K | 1
|
| 22K | 1
|
| 33K | 3
|
| 39K | 4
|
| 47K | 1
|
| 56K | 2
|
| 68K | 1
|
| 82K | 1
|
| 100K | 1
|
| 120K | 1
|
| 180K | 1
|
| 220K | 2
|
| 470K | 1 |
Potentiometers
| Value | Count
|
| 10K Lin | 1
|
| 100K Lin Trimpot | 1
|
| 1M Rev log | 1 |
Semiconductors
| Value | Count
|
| 4558 Dual op-amp | 1
|
| MN3007 1024-Stage Low Noise BBD | 1
|
| CD4047 Monostable/Astable Multivibrator | 1
|
| LM358 Dual op-amp | 1
|
| 1n914 Diode | 2
|
| 2n5087 PNP Transistor | 1
|
| 2n5088 NPN Transistor | 2 |
Working voltages
Debug help, this is values taken from a working Small Clone. "fl" after the reading means the value fluctuates, and that it should.
Link
Q1
2N3906
C 0.00
B 2.57
E 3.22
Q2 (Bottom 2N5088)
2N5088
C 8.80
B 3.58
E 3.01
Q3 (Top 2N5088)
2N5088
C 8.80
B 8.77
E 8.13
MN3007
1 8.13
2 4.04
3 3.78
4 0.00
5 0.00
6 4.03
7 3.67
8 3.67
CD4047
1 7.91-7.97 fl
2 0.10-0.13 fl
3 6.64-6.86 fl
4 8.13
5 8.13
6 8.13
7 0.00
8 0.00
9 0.00
10 4.03
11 4.03
12 0.00
13 7.93-7.98 fl
14 8.13
Top op-amp 358N
1 0.94-2.24 fl
2 3.58
3 3.55
4 0.00
5 1.16-2.98 fl
6 1.95
7 0.03-7.52 fl
8 8.80
Bottom op-amp TL072
1 4.40
2 4.40
3 4.29
4 0.00
5 4.39
6 4.40
7 4.41
8 8.80
Gut Shot
This is from my build of this effect.
Link
Small Clone Chorus
