"Rob"

I think one of my Dynaudio Contour 1.1 speakers has a fault. On music it
sounds as though something's rattling inside, or one of the drivers is
loose. I've taken the woofer out and it looks OK, insofar as I know what OK
is - nothing burnt or blown.

It's difficult to replicate with music, so I recorded a tone and this is
what it sounds like:

http://patchoulian.googlepages.com/speaker

It's a 500kB mp3 file.


** Sounds like the voice coil has partially detached from the cone and is
hammering in time with the low frequency tone.


Short of contacting Dynaudio and asking about a replacement woofer, any
suggestions?


** Run the test with the driver removed and see if you get the same
distorted tone.

Check for any object caught in the back of the frame or held by the
magnet.




...... Phil