Enclosure not stated · 3 knobs
Free The Tone HB-2 Heat Blaster
Based on the Free the Tone HB-2 Heat Blaster· 1 other board clones it
From the post
Info about the original:
The HEAT BLASTER delivers a truly modern distortion sound, with a tone control plus high-cut and low-cut switches for additional tonal adjustment. The high-cut switch attenuates the presence frequencies in order to produce a mellow tone that retains good projection. With the high-cut switch engaged you can use the tone control to achieve the required degree of projection. This type of setting is ideal for solos. The low-cut switch attenuates the low frequencies, making it easy to attain an ideal blend with bass and drums for a well-balanced band sound. The low-cut switch affects low frequencies that normally cannot be adjusted using amplifier tone controls.
Sure enough, there's something quite familiar going on in there. Talking about a vision that came to the designer in a dream...
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 Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 28 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 7 | ||||
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×1 | 330Ω | 330 | read from the layout by eye | |
| ×5 | 1K | 1k | read from the layout by eye | |
| ×1 | 8.2K | 8.2k | read from the layout by eye | |
| ×8 | 10K | 10k | read from the layout by eye | |
| ×2 | 510K | 510k | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| Capacitors 10 | ||||
| ×1 | 47pF | 47p | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×1 | 150nF | 150n | read from the layout by eye | |
| ×2 | 220nF | 220n | read from the layout by eye | |
| ×2 | 470nF | 470n | read from the layout by eye | |
| ×2 | 1uF | 1u | read from the layout by eye | |
| ×1 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | 2SC1815 | 2SC1815 | read from the layout by eye | |
| Q2 | 2SC1815 | 2SC1815 | read from the layout by eye | |
| ICs 1 | ||||
| IC1 | TL072 | TL072 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Gain | A1M | A1M | Potentiometer | read from the layout by eye |
| Tone | B20K | B20k | Potentiometer | read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |
| Switches 2 | ||||
| Low Cut | SPST | SPST | read from the layout by eye | |
| High Cut | SPDT | SPDT | read from the layout by eye | |
| LEDs 2 | ||||
| D2 | 3mm Red LED | 3MM RED LED | read from the layout by eye | |
| D3 | 3mm Red LED | 3MM RED LED | read from the layout by eye | |
Other boards based on the Free the Tone HB-2 Heat Blaster
- Free the Tone HB-2 Heat Blaster Effects Layouts (blog)