Odd 2225

[robertbartsch]

Hmmmmm...

I had a similar issue with a set of 075 tweeters I had re-maged. The cores were sent out and the vendor demagnitized and remagnitized them.

Unfortunately, during the process the rings shifted and prevented the reinstallation of the noses that have a bolt runing front-to-back. Anyway, I sent them back and they demagnitized them, aligned the rings, reinstalled the noses and remagnitized the cores.

In this case, I was told the rings were never cemented from the factory which, apparently, is not the case with your 2225's, however.....

[Allanvh5150]

True. Sometimes it seems that the factory has not used enough glue! The glue is not impervious to high temperatures so when the voice coil is overdriven it heats up the ring way more than normal and the glue fails. More glue would not have been a problem as no one ever gets to see inside unless the driver falls on the floor. Now I am onto my second 2225 2235 conversion in two days. Two to go.

[subwoof]

??

The 075's are alnico and are assembled differently that the ferrites ( what we are talking about ). They do not have a shorting ring.

The "ring" that shifted in your tweeters is actually the magnet donut that is under the pole piece and *it* moved if your bullet didn't install.

If the magnet was charged, it could of been re centered with a simple jig without going through all those motions.

sub