Enclosure not stated
Hughes & Kettner Red Box Classic DIVerified
Based on the Hughes & Kettner Red Box Classic DI
From the post
Original info:
The Hughes & Kettner Red Box Classic converts Line, Out and Speaker Out signals into balanced, frequen- cy-compensated signals, enabling a direct feed to a mixer. The Red Box Classic features two voicing options, a 4x12" cabinet and a 2x12" combo.
You can find the original manual PDF here (must read!)
Original schematic is available here.
You can use an adapter or the 48V Phantom power via Balanced Output jack.
...and without Ground Lift 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 Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 22 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| ×3 | 470R | 470 | read from the layout by eye | |
| ×1 | 2K2 | 2.2k | read from the layout by eye | |
| ×1 | 4K7 | 4.7k | read from the layout by eye | |
| ×2 | 6K8 | 6.8k | read from the layout by eye | |
| ×4 | 10K | 10k | read from the layout by eye | |
| ×2 | 12K | 12k | read from the layout by eye | |
| ×1 | 15K | 15k | read from the layout by eye | |
| ×3 | 22K | 22k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| Capacitors 7 | ||||
| ×2 | 100n | 100n | read from the layout by eye | |
| ×1 | 10n | 10n | read from the layout by eye | |
| ×2 | 1n | 1n | read from the layout by eye | |
| ×1 | 1n2 | 1.2n | read from the layout by eye | |
| ×1 | 4n7 | 4.7n | read from the layout by eye | |
| ×2 | 470n | 470n | read from the layout by eye | |
| ×3 | 22u | 22u | electrolytic, legend: caps min. 25V; read from the layout by eye | |
| Diodes 2 | ||||
| D1 | 27V Zener | 27V | BZX 85C 27; read from the layout by eye | |
| ×2 | 1N4007 | 1N4007 | D2, D3; read from the layout by eye | |
| ICs 1 | ||||
| ×1 | TL064 | TL064 | read from the layout by eye | |
| Switches 2 | ||||
| Ground Lift | SPST | SPST | Switch 1; read from the layout by eye | |
| Cab | SPST | SPST | Switch 2; read from the layout by eye | |