ayosha wrote in message ...
Hi,
I found some old Marantz boxes in the attic. LD20 if that means
anything to anybody anymore, probably not. 14" by 9" by 10"
outside, 2 way, vented. Foam turned to dust on bass units.



Is there any info site where I can compare dimensions or find
calculations to arrive at proper crossover frequencies. Maybe
manufactors datasheet sites? My old ref books are gone and any
math background I had went with them.

Try phoning Wilmslow Audio.
http://www.wilmslow-audio.co.uk/

They can possible recommend a drop-in replacement that will
work with the original crossover. **

If not, they could probably supply a matched set of woofer,
tweeter and Xover which will fit the cabinet.
All the designing you have to do is pick the right size reflex vent.

** It's a Marantz. It probably doesn't have a crossover :-)

--

Roger.