This explains a lot!

Makes sense Olly and I never thought that in some cases like the RL140's should be refoamed in a more precise way. I'm not discussing the fact that shimming is needless but in my case I think I can do it without shimming. But nevertheless I will give it a try (shimming) as soon as I get my first RL140. Does this only counts for the RL140 or

So I've heard from the experts that shimming is the way to centre the cone acurately but there might be a chance that dirt wil come in between the coil and magnet. If that's the case then the driver can be thrown away as I've been told. There are brands from where the dustcap (dustcap and cone is one piece) cannot be removed so only refoaming

Look what I've found in my closet! Now searching for a Beolit 500/600

[quote user="Søren Mexico"]If an aluminum edge, in my opinion it has to be flush with the surface and not upon the surface, its a dirt catcher.[/quote] Dirt catcher? Hmmmm, aren't B&O vintage stuff all dirt catchers. My F1000 looks brilliant with these aluminium edges, much better then the original!

[quote user="Søren Mexico"] And now to why shimming. When the surround is of, the only thing that keep the cone and the cone tube in place is the spider, if the spider is only a little damaged or misaligned, the gap between tube and magnet will not be parallel, and if there is only a 0.1 Mm like in the RL140 drivers, you've got

[quote user="stevepe"] Hi Leslie, Would you tell us how you liked the fit of the foam surrounds, and which supplier are they from? I haven't found very many places to get surrounds for these odd sized woofers, and fit can be a problem. I'm a shimmer. Listen to Soren. Thanks, Steve [/quote] Hi Steve, Best place to buy these surrounds

[quote user="sonavor"]Nice job and beautiful cabinet.[/quote] Thank you Sonavor, the cabinets are indeed "awesome" and in new condition

[quote user="Eugene"] Leslie I would trust the touch of your hand over my shims or battery trick anyday. As usual - good job. I think I did one set of CX-100 drivers that way.. I dont really think size makes it anymore difficult. [/quote] Thanks Eugene! What's shimming? Have tried to translate that word, but nothing....

Other option is using L shaped aluminium. Have been using that on my F1000's. Protects the edges and save you lots of work! Two types...