news wrote:

I have a pair of B&W 801 Matrix Series 3 speakers and want to bi-amp them
but they do not offer any sort of switch to truly seperate the low/high
frequencies.

Simply remove the "jumpers" between the low and mid/high speaker terminals.

Is there a B&W 801 out there where a switch can be installed or do you have
to pull the speakers apart and mod the board to install a bypass switch?

Bypass? Do you mean you want to bypass the crossover networks alltogether?

--
Koef.