Enclosure not stated
Frequency Brighteners
- Category
- EQ / Filter· Tone Control and EQs
- Price
- see vendor
- Tags
- Tone Control and EQs
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 29 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 14 | ||||
| ×1 | 47k | 47k | All Signal Brightener, Q1 collector; read from the schematic by eye | |
| ×1 | 1M | 1M | All Signal Brightener, Q1 base bias; read from the schematic by eye | |
| ×1 | 100k | 100k | All Signal Brightener, Q1 base to ground; read from the schematic by eye | |
| ×1 | 1.8k | 1.8k | All Signal Brightener, Q1 emitter; read from the schematic by eye | |
| ×1 | 22k | 22k | All Signal Brightener, tone network; read from the schematic by eye | |
| ×1 | 2.2k | 2.2k | All Signal Brightener, tone network to ground; read from the schematic by eye | |
| ×1 | 15k | 15k | All Signal Brightener, tone network; read from the schematic by eye | |
| ×1 | 100k | 100k | All Signal Brightener, Q2 base to ground; read from the schematic by eye | |
| ×1 | 1M | 1M | All Signal Brightener, Q2 base bias; read from the schematic by eye | |
| ×1 | 47k | 47k | All Signal Brightener, Q2 collector; read from the schematic by eye | |
| ×1 | 4.7k | 4.7k | All Signal Brightener, Q2 emitter; read from the schematic by eye | |
| ×1 | 6.8k | 6.8k | High Frequency Brightener, collector; read from the schematic by eye | |
| ×1 | 120k | 120k | High Frequency Brightener, base bias; read from the schematic by eye | |
| ×1 | 62k | 62k | High Frequency Brightener, base to ground; read from the schematic by eye | |
| Capacitors 8 | ||||
| ×4 | 1uF | 1u | All Signal Brightener: input, Q1 collector coupling, Q2 base coupling, output (electrolytic); read from the schematic by eye | |
| ×1 | 0.0047uF | 4.7n | All Signal Brightener, treble network; read from the schematic by eye | |
| ×1 | 0.01uF | 10n | All Signal Brightener, across bass pot; read from the schematic by eye | |
| ×1 | 0.1uF | 100n | All Signal Brightener, across bass pot; read from the schematic by eye | |
| ×1 | 0.047uF | 47n | All Signal Brightener, treble network to ground; read from the schematic by eye | |
| ×1 | 0.22uF | 220n | High Frequency Brightener, input; read from the schematic by eye | |
| ×1 | 0.47uF | 470n | High Frequency Brightener, output; read from the schematic by eye | |
| ×1 | 0.15uF | 150n | High Frequency Brightener, from 5k wiper to 1k; read from the schematic by eye | |
| Transistors 1 | ||||
| ×3 | 2N3904 | 2N3904 | two in the All Signal Brightener, one in the High Frequency Brightener; read from the schematic by eye | |
| Potentiometers 5 | ||||
| ×1 | 100k | 100k | Potentiometer | All Signal Brightener, after Q1 collector coupling cap, wiper feeds tone network; unnamed; read from the schematic by eye |
| Low | 100k | 100k | Potentiometer | All Signal Brightener 100k*: low-end brightening (bass) control; read from the schematic by eye |
| High | 100k | 100k | Potentiometer | All Signal Brightener 100k**: high-end brightening (treble) control; read from the schematic by eye |
| Intensity | 5k | 5k | Potentiometer | High Frequency Brightener, emitter pot; read from the schematic by eye |
| Gain | 1k | 1k | Potentiometer | High Frequency Brightener, wired as variable resistor to ground; read from the schematic by eye |
| Trimmers 1 | ||||
| ×1 | 10k | 10k | All Signal Brightener, Q1 emitter to ground, one end nc; set-and-forget just below oscillation; read from the schematic by eye | |