Thanks Presto,
I appreciate that it's not simple designing a crossover but let me explain my problem.
30 years ago I heard a custom-designed and made speaker that knocked me over!
I bought them and in the intervening period I have heard nothing that quite equals them in sound.
They were carefully tuned in the design process and those designers are no longer contactable
Now I don't want to start again and I don't want to change the sound!
All the original drive units were Hokutone which do not exist anymore.
The tweeters died and I blew up the Mids so I replaced them with the Scanspeak ones and carefully adjusted the box volume and efficiency of the Scanspeak drivers to match as carefully as possible the original sound.
It's still not quite as spacious and transparent as originally but it goes louder without distortion.
I wish to improve the sound still further by replacing the internal wiring and at the same time the capacitors.
The capacitors have been 2.2uF and 10uF for the 30 years but the formula says that I need 200uF for the Mid to cross over at 200Hz and with 10uF it is only crossing at 2000Hz.
With my ear against the Mid/Woofer this is obviously not so but what value do I need to go to, to improve without losing the speaker's balance?
200uF would require 20x10uF, occupy a large space and cost $2600 for each driver?
Would 20uF be an audible improvement over 10uF?
Any help you could give would be appreciated?
