Chris Morriss wrote:

Oh Oh! I've just seen that he intends to bi-amp. In which case,
ignore my advice about coils and capacitors in my other post, and
follow Dave's advice. Active filter crossovers before the amps are
MUCH more sensible.

As I said to Dave, the B110 and T27 will be fed from one amp, so I still
need a crossover for those.


You could even design some 'constant voltage' subtraction type active
crossovers to keep a flat summed amplitude and phase response. (in
theory at least.

Without really understanding what you're saying, this sounds like the sort
of thing I'm considering for the bass amp, especially if I can adjust it.


I fear your venerable drive units will impose a
sonic signature whatever the crossover. Both the B139 and the B110
had some nasty resonances.)

I don't doubt it for a minute, but replacing them is outwith the budget. :-)
I've had them for years and like the overall tonal character - I've never
felt that they were super-clean-fi, but I do find them to be a smooth
listen. Mid range could come out more - some voices are a bit quiet (maybe a
new crossover can fix that...).


--
Wally
www.artbywally.com
www.wally.myby.co.uk/music