On Sat, 02 Apr 2011 09:48:24 +0100, Chris Hills
wrote:

On 30/03/2011 15:07, Dave Plowman (News) wrote:
Are the correct units (from the speaker maker) NLA? Drive units vary a
great deal other than in just power handling and impedance, so just
bunging in anything that will fit may not have good results.

How can I find out? I don't know what to look for.

They need to be specified as nearly as possible to match what you took
out. That must be your starting point.

d