i just did a pair of 801 series 80, replaced all the caps with solen 400v fast caps, and two bennic 1000mf 100v ones.. yes it was a great deal of stacking, drilled a couple of holes and made sure it all fit good and snug with zip ties and silicone.
i also removed allot of the protection circuit ( from looking at it as a section on the board) i removed the 82 ohm & 1k ohm resisters (which had burn marks on them), all the diodes, the two 100mf 40v caps (both dry and junk) and two of the wire jumper leads that connected the resistors.. that appeared to be all the 'connections' from the cross over traces to the protection circuit! I hope i did it right! i just am not able to get measured ohm load at the speaker terminal with my volt meter.. not sure why? they sound good so far,
;-)
i think i might need to put that 82 ohm 10 w resistor back in there.... not sure B& W has no schematics available