"spudrick" wrote in message
...
The largest is 15" but it only has a 1 inch or so magnet.
This is to save money or is there another reason?

I imagine it's because the speaker was designed to handle only a few watts,
not the hundreds of watts of today's designs. It may have an alnico magnet,
too, which is I believe a more powerful magnetic material than modern
ceramic magnets.

Tim