A 416 dilemma. What to do?

[Earl K]

Obviously I'm bummed because I thought that having the woofers reconed and remagnatized would bring them back to spec. That was not the case for mine. So I wonder how many others have had the same bad luck and never known it?

- I'm thinking that the new normal ( SOP or Standard Operating Procedure - before reconing ) should now include a "gauss check of the gap" to confirm that proceeding with a recone is indeed worthwhile .

Is magnet strength testing after a recharge but before a re-cone a standard practice?

Well at GPA it does not seem to be. From my conversations with them, it did not seem that they do this. They do have the equipment, tho. And for my second recharge they could not do it, at least not without ripping the new cones off.

- I have no idea if GPA would incorporate this additional step into the remagging / reconing process . Since it adds a bit of time / the service may need to be added to the bill .

My main question now is - Can the magnets go beyond repair? Even when there is no obvious damage? Bill said no, but at least one other Altec fan I've spoken to has said yes.
Anyone know?

- I don't know . The general consensus has always been that under normal circumstances an Alnico magnet can be fully recharged .

- Your 416a magnets provide the challenge to this oft quoted rule and it would be really helpful to understand why they are resisting a full recharge .

<> cheers