Enclosure not stated · 5 knobs
Sunn Beta Pre AmpVerified
Based on the Sunn Beta Lead· 4 other boards clone it
- Category
- Distortion
- Build
- Vero· 29×30· 71 cuts, 37 links
- Layout
- Verified · Dirtbox Layouts marks it as built and working
- Tags
- Distortion, Pre Amp, Sunn
From the post
Ok, let's release the beast. Two layouts. One stock for iether Bass or Lead cap values. And another one with a Beta/Lead switch. Since I'm not a big fan of offboard wiring I decidied to simplify things a bit. Lead cap values is always in circuit and with a 4PDT switch you can switch in four caps in parallel so it matches up with Bass values. Some values differs in few hundred pico farad or a few nano farad but the overall difference is minimal. And in theory you could use a SPST switch.... It also has an onboard charge pump for 15v/-15 operation. This going to be the last layout I will post in a while since I'm going back to work tomorrow but this and a few other layouts should keep some of you occupied....;-)
*Edit* MTK once again outdid himself! Here is a short demo of Lead/Bass switch version.
Stock layout.
Layout with Lead/Bass switch
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 54 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 19 | ||||
| ×5 | 100K | 100k | read from the layout by eye | |
| ×1 | 1.5K | 1.5k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×2 | 68K | 68k | read from the layout by eye | |
| ×3 | 22K | 22k | read from the layout by eye | |
| ×2 | 10K | 10k | read from the layout by eye | |
| ×2 | 330K | 330k | read from the layout by eye | |
| ×2 | 120K | 120k | read from the layout by eye | |
| ×1 | 470Ω | 470 | read from the layout by eye | |
| ×4 | 1M | 1M | read from the layout by eye | |
| ×1 | 3.3K | 3.3k | read from the layout by eye | |
| ×3 | 12K | 12k | read from the layout by eye | |
| ×2 | 15K | 15k | read from the layout by eye | |
| ×1 | 33K | 33k | read from the layout by eye | |
| ×3 | 47K | 47k | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| ×1 | 150Ω | 150 | read from the layout by eye | |
| Capacitors 15 | ||||
| ×1 | 5pF | 5p | read from the layout by eye | |
| ×2 | 33pF | 33p | read from the layout by eye | |
| ×1 | 82pF | 82p | read from the layout by eye | |
| ×1 | 200pF | 200p | read from the layout by eye | |
| ×1 | 2.2nF | 2.2n | read from the layout by eye | |
| ×2 | 47nF | 47n | read from the layout by eye | |
| ×1 | 100nF | 100n | read from the layout by eye | |
| C14 | 56nF | 56n | Beta Bass; Beta Lead 22nF; read from the layout by eye | |
| C16 | 8.2nF | 8.2n | Beta Bass; Beta Lead 5nF; read from the layout by eye | |
| C17 | 15nF | 15n | Beta Bass; Beta Lead 8.2nF; read from the layout by eye | |
| C18 | 47nF | 47n | Beta Bass; Beta Lead 27nF; read from the layout by eye | |
| ×8 | 2.2uF | 2.2u | electrolytic, bipolar; read from the layout by eye | |
| ×4 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×4 | 100uF | 100u | electrolytic; read from the layout by eye | |
| ×1 | 680uF | 680u | electrolytic; can be subbed with 470uF; read from the layout by eye | |
| Diodes 9 | ||||
| D1 | 1N4148 | 1N4148 | read from the layout by eye | |
| D2 | 1N4148 | 1N4148 | read from the layout by eye | |
| D3 | 1N4742 | 1N4742 / 12V | 12v Zener; read from the layout by eye | |
| D4 | 1N5817 | 1N5817 | read from the layout by eye | |
| D5 | 1N5817 | 1N5817 | read from the layout by eye | |
| D6 | 1N5817 | 1N5817 | read from the layout by eye | |
| D7 | 1N5817 | 1N5817 | read from the layout by eye | |
| D8 | 1N5817 | 1N5817 | read from the layout by eye | |
| D9 | 1N5817 | 1N5817 | read from the layout by eye | |
| ICs 6 | ||||
| IC1 | JRC4558 | JRC4558 | read from the layout by eye | |
| IC2 | CD4069 | CD4069 | read from the layout by eye | |
| IC3 | JRC4558 | JRC4558 | read from the layout by eye | |
| IC4 | JRC4558 | JRC4558 | read from the layout by eye | |
| IC5 | JRC4558 | JRC4558 | read from the layout by eye | |
| IC6 | LT1054 | LT1054 | read from the layout by eye | |
| Potentiometers 5 | ||||
| Drive | B1M | B1M | Potentiometer | dual; read from the layout by eye |
| Treble | B100K | B100k | Potentiometer | read from the layout by eye |
| Mid | B100K | B100k | Potentiometer | read from the layout by eye |
| Bass | B100K | B100k | Potentiometer | read from the layout by eye |
| Level | B100K | B100k | Potentiometer | read from the layout by eye |
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