"Don Pearce" wrote in message
...
On Wed, 17 Jan 2007 15:58:23 -0000, "Keith G"
wrote:


OK, some techie questions regarding this crossover:

http://www.apah69.dsl.pipex.com/show/crossover1.JPG


1) Anybody care to tell me what order it is (seems pretty basic to me)?

2) Can I slap it between just about any tweeter and similar sized mid/bass
unit with good effect?

3) Will a different box size have any bearing on how it works with the
drivers?

4) Have I marked up the driver connections correctly?


Apologies if these questions are a bit simplistic - I have a bone problem
which prevents me reading reams of techie stuff (and actually *learning*
anything) when a swift thump with a hammer will sort most things out, one
way or another.....

That's a first order crossover, plus some assorted other stuff.


I thought there were too many 'bits' for a 1st Order crossover!! (Shows what
I know....! ;-)


Basically, the woofer is fed through that big choke. Is there a value
printed on it anywhere?


No, the choke has no markings on it at all.


The 4.7ohm and 12MFD at the bottom appear to
be there to keep the impedance of the woofer tidy out of band - they
won't do anything particular to the sound. The tweeter is fed by the
blue cap at the top - can't see the value of that either.


The cap is marked '8 MFD and 50 VNP'....

(VNP...??)


The two
parallel resistors will drop the level to the tweeter, so presumably
in the original design the tweeter was more sensitive than the woofer.



No idea - Vifa units (Ruark Sabres).

The tweeters have been fried and the woofers are doing stirling work in
another box which sounds pretty good!!


You've marked up OK, but without those two vital values, it is
impossible to judge their applicability.

As for boxes - fine, this is a standard crossover design, and it
should work in most cases.


OK Don, - thanks for that - I've marked it 'fit for purpose' and will
proceed blindly, as intended...!! :-)