Martin (Dillen), can you help about the tweeter question? Nobody else seems to know the answer

Thanks Spiros, I think the rest of the experts here are 😴

Hey Leslie,

I would definitely keep them, just in case they are repairable, and you want the satisfaction of knowing they are completely stock.

That being said, they look pretty haggard, with the diaphragms being torn and such. I bet it would be super easy to find a modern cone tweeter that fit and had fairly equivalent sound characteristics. All the research and money has gone into developing domes, cone tweeters are super cheap and haven't changed too much through the years. I bet the use, or maybe the lack of it, of ferrofluid in a modern cone tweeter would be the biggest difference between those old ones, and a modern set.

Jon

P.S. - I guess I didn't read your post thouroughly the first time. You've already completed the cubes, apparently. Sorry.

Spiros wrote:

I think you should keep them. Not sure but might be repairable.

 Frede could probably enlighten us on this?

There is a possibility to repair some of the speakers.

Specially the one’s with the cone failures, a very careful process can save some.

One  of the most important restoration activities is to coat the cones with a special coating material. This will give all old speakers / drivers ‘new life’.

I think about 25% of the drivers have a broken coil and cannot be repaired.

A good deal of them has a low output and this cannot be repaired.

Anyway there is a chance one or more can be used, so please keep them or sell them to other Beovox 2500 Cube fan’s..🙂

/Frede

If they are surplus to requirements, I would send them to Frede so that they might actually be used. Whether he would welcome this is another matter! 😁

Thanks guys, if somebody is interested, PM me!

Jon wrote:

I bet it would be super easy to find a modern cone tweeter that fit and had fairly equivalent sound characteristics.

Hey Jon, that's the whole issue, you hardly can't find them in the original size that would fit properly. Spiros did an attempt some time ago but did not succeed (isn't it Spiros?).

They are 6 Ohms impedance so practically impossible to match today.

Martin