RIght, It's the hole in the magnet.

But on C30 there is no "hole" for wall mounting. There is a "grid" in which hooks take place. 

Oh got it. I was thinking that the whole cx/c line had them. My mistake. 

I have reconditioned several pairs of CX's a few years back.  Mostly with new surrounds from GoodHifi.

Besides the foam rot, It is almost imperative to replace the caps in the crossover. I have done it with all mine.

They originals are getting really old and are often still looking ok, but were out of specs, which muffles the sound.

Also new surrounds need a bit of a workout to loosen up.  

cooldude wrote:

It is almost imperative to replace the caps in the crossover. I have done it with all mine.

They originals are getting really old and are often still looking ok, but were out of specs, which muffles the sound.

Thank you for your advice. According to the service manual, on C30 it's just one capacitor per speaker, worth trying!

6.8 microfarad, hope it's not too much exotic! 

matador43 wrote:

cooldude wrote:

It is almost imperative to replace the caps in the crossover. I have done it with all mine.

They originals are getting really old and are often still looking ok, but were out of specs, which muffles the sound.

Thank you for your advice. According to the service manual, on C30 it's just one capacitor per speaker, worth trying!

6.8 microfarad, hope it's not too much exotic! 

Bipolar axial.
In C30 it may not be quite as important as in larger and more elaborate models, but see if you can find some with specs as close to the original as possible.
Or grab a set from Beoparts-shop.

Martin

Hello. To be honest, I would personally just replace the whole crossover. I did it in my RL-60's. Just make sure you get the crossover frequency right. 

Noah wrote:

Hello. To be honest, I would personally just replace the whole crossover. I did it in my RL-60's. Just make sure you get the crossover frequency right. 

The crossover frequency will be correct with a new capacitor.
The filter in Beovox C30 is merely a capacitor and a coil, and neither the coils nor the ceramic resistors or polyester capacitors used by B&O will change value over time to any extent worth a concern.
There's really no need to replace any of that, unless physically damaged (or burned, in which case the rest of the circuit and the drivers would also need attention).
Only electrolytic capacitors (and the trimmer and/or relay for the overload circuit in some of the larger models) will wear or degrade from age.

And it's correct, that the new surrounds will be stiff - just as when the drivers were new.
It's typicaly that the speakers (usually the woofers) sound a bit "reluctant" to play at first, so you really shouldn't judge anything until they have played at "normal listening volume" for at least ten to twenty hours.
Having said that, Beovox C30 is a great little speaker in its own right, but it will never "pack a punch".

Martin

True. I just know in my experience all the crossovers I've ever gotten from B&O systems I bought used needed a full replacement. 

Noah wrote:

True. I just know in my experience all the crossovers I've ever gotten from B&O systems I bought used needed a full replacement. 

May I ask why?

Martin

Well in one of my pairs of RL60's the crossovers were so miss-matched I couldn't fix them. The previous owner did a janky job of replacing the crossovers and who I got them I just couldn't fix them for the life of me lol.