mico%trzdor1.ico.olivetti.com@RELAY.CS.NET (Michele Costabile) (09/25/90)
Hello,
Many thanks to Shankar Bhattacharyya for contributing on the
design of woofers with a formative series of articles.
I went to a local audio fair and bought me a book on loudspeaker
design and a program.
The program comes with an archive of 400 woofer parameters that
comes with it.
I do not include a reference because book and program are in
Italian!
Of course, the first thing I did was an alignement of the Dynau-
dios. The numbers I had were almost the same as Shankar's.
I typed in the numbers for the AC 12 and again the alignement was
fairly the same, good job!
On the minus side, I do not know how to interpret
term = - 2 + 1/(Qtc *8 2) [from #3]
There seems to be a missing operator between the 8 and the 2.
Please, what is the right spelling of that formula?
One more issue: my speakers are Metronome 7 in their PLC audio
incarnation (they have been made under different brands).
Good speakers, but they badly need a woofer!
The problem is how can I make sure the woofer(s) do blend well with my
speakers? Should I match efficiencies?
One solution is to have a very clever active cross over and bi-amp.
Of course, I would spend less with a passive cross over but am afraid
to be in real trouble if I can't match everything well.
Advice on this and cross over design would be very helpful!
Thanks everybody.
Michele (mico@olivetti.com)