Jim Lesurf wrote:

Can you say how you intend to "double the number of bass drivers"? Any
anwer will depend upon how you are thinking of doing this. i.e. how
are you going to wire them up, mount them in the same or different
cabinets, crossover/filter arrangements, etc.

Isobaric subs using B139s, wired in parallel, infinite baffle cab of 60-80
litres, active low-pass filter before the power amp.


The problem is that the power ratings for speakers are quoted on an
entirely different basis than that quoted for amplifiers. The
speaker's ability to handle a given power also depends upon other
factors as well.

Something to do with losses in the crossover of a conventional speaker, and
the fact that the speaker's rating is for the full three-driver setup with
crossover?


Am I on a concievably-sensible track with this Cyrus Two idea?

In principle, it may well be OK. But you have not provided enough
detail to be sure.

Subs as above, B110 bass/mid, T27 tweeter. I figure that, if a Cyrus Two can
drive the 4 ohm isobaric subs to a volume that I'm happy with, then the B110
and T27 should be fine. I'm looking into an active crossover for all
frequency bands, before the power amps.


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