ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
Hello all.
A few years ago, I inherited a pair of BeoVox S45 speakers. Whilst I appreciate some people's advice in this case is to recommend that I invest my money in a pair of much more modern speakers, however the speakers hold a certain sentimental value.
I was pleased to see that at least one of the worked great, however the bass unit in the other speaker appeared not to work. Yesterday, I set some time aside to take a look at the speaker. Admittedly, at first I glossed over the woofer, as it appeared to be in great condition (considering age), but after testing through the crossover board and finding no glaringly obvious faults, I turned back to the woofer.
When simply applying a charge to the bass unit, sound could be heard, but very, very faintly. Upon closer inspection, it does seem that the cone is stuck in the coil [corroded?], hence there's not enough travel in the cone to produce any sound that can be heard over the mid unit and tweeter.
I've spend a considerable amount of time today looking for both used and new replacements for the unit, however I can't seem to find one. I appreciate that B&O don't normally use off-the-shelf components in their equipment, so the odds are stacked against me.
So, my question is: should I look for a pair of more modern/new bass units for the two speakers or should I continue the search for a used replacement (hopefully from an S45 cabinet). Better still, does anyone know of good places to look for such an item, other than eBay?
I'm by no means an expert in this field, so I appreciate any input anyone has to try to get this speaker working again, if the bass unit could even be repaired!
Here's some pictures:
Thanks,
Joe
Welcome to Beoworld. Sounds like your magnet slipped and you have a stuck woofer. This can be fixed. Search the forum - you will find at least 3 threads for fixing stuck woofers. Here's my thread on fixing the stuck woofers of the P45.
You can try this, especially for S45 woofers
blah-blah and photographs as needed
@Rich 7:
Yes, now that you mention it, it does sound quite possible that a slipped magnet is causing the issue. I had no idea that it was possible, until you said though. Dillen (Martin) from these forums actually contacted me and he suggested the same too, so it seems that's the correct diagnosis.
@Orava:
That's a very good guide that you have provided there and I'm sure it will prove very useful when I try to get my broken woofer working again this weekend.
I'll let you all know how I get on!
Thank you very much for your help so far.
Hello again,
I've now finished rebuilding the broken woofer and a quick (gentle) test of the unit shows the cone moving quite comfortably and freely in and out of the magnet once again.
I'm just currently re-oiling the cabinets after a light sanding today and I'll hopefully be able to fully re-assemble and install the speakers into their new home tomorrow
@Orava and @Rich: Thank you for both of your tutorials on how to resolve this issue - I'm not sure I would have been able to do it without!
Great news! For the other woofer, you'll want to do some preventive maintenance. You'll want to put a bead of epoxy all the way around the magnet. Tutorials are on this site.
I hadn't thought of that. I'll be sure to do that before I reinstall the speakers, just in case.