The Rev 0 board is a either a blue, ROHS board or a yellow, non-ROHS board (for US only.) It has “Rev 0” printed on its back.
There are no known errors with the Rev 0 PCB. If you are using the suggested 5334 for IC U3 rather than a unity-gain compensated op-amp, you probably will want to add a compensation capacitor of 22pF between pins 5 and 8, on the back of the board.
The 4HP panel has potentiometer holes that are slightly too high to be polite. The workaround is to file (e.g. with a round file), or drill or dremel out about 10% at the bottom of those two holes, if it has not been done already by us. (The resulting gap at the top will be covered by the pot nut and not be visible.)
Splice as a Hi-Fi crossover
The Splice PCB can be used as a 2-way 36/db active LR6 crossover. Use one board per channel (i.e. stereo requires 2 boards) and provide your own box and power (which can be from +/-9V to +/-15V). This gives the ability to change the phase and level of both high and low outputs.
The changes are:
- Connect the input signal to the input holes where the input sockets normally go. (I.e. parallel input)
- Omit all the circuits around the final mix stage, including the single op-amp and resistors that combine both. Details provided with the schematic.
Freak Out! 