Thanks Puncher, but that's exactly the Problem. I found a Dutch Onlineshop that sells foamcones etc, also for B&O, but only for speakers. My guess would be that the material is not that much of a problem, but i don't see how i could use a cone for a circular speaker on the rectangular ABR. Or is the material flexible enough? If yes, i could use a cone for a larger speaker, say maybe a 25 or 30 cm (what ever may fit)?

On the other hand, people seem pretty happy with the conversion. Didn't you say in an old thread you have a spare kit? I'm surely not the only one who'd be verry happy to have the specs, tho i'd never dare ask anyone to take the speaker apart and messure it.

A serious alternative could be the specs of the speakers, so someone could calculate the BR openings ... hmmmpf ... as a last resort i might just close the cabinet and get a subwoofer.
 

Thank you Nick,

i've already contacted goodhifi on the weekend but didn't get a reply yet. I'll give a heads up as soon as i have more info. 

Drop MArtin (Dillen) a PM as he can refoam the ABR's for you with correct spec material. Mine have been packed up ready for shipping to Denmark for him to do. Just not got round to sending them yet.

Craig🙂

I'm making a conversion using two passive radiators in place of the metal plate ABR.

I'm putting up a new website and hope to have it online with next few days.  I've got the RL60 page almost finished, so when you see it, I will have the photos and test results posted with my new modification/conversion.  I made sure to complete this page first as I've got a lot of information I'll be adding as time goes on to the rest of the site  The new site is

I have my website

I've got my modificaton to the RL60's failed ABR's finished along with the rebuild of the crossovers.

Stryke out my comment in my last post about seeking out passives with a higher xmax.  The new crossover upgrades fixed this issue.  The suspension of the Peerless Tymphany passives are stiffer than the drivers and are doing a great job.  Things are ratteling in my office now with only my first finished speaker hooked up.  I'm anxious to finish the xover in #2 and get them into my home theater!

If B & O still made the ABR's, I wouldn't buy them as my speakers sound fantastic with my modifications.  I know the factory ABR's would fail againl.

At 100 dB's at 3 feet away, I was pleasured to listen to  -0- distortion and extreme clarity in the speaker drivers.  The bass is much improved as well as the mids and highs.  I kept turning up my receiver until I pegged 100 db and stopped.  My Rotel will give me even better quality music from them.

For those of you who have been to my website's B & O modification page already, please go back to see the latest results and updated photographs that I have posted to help others out.

I've also have my "Main's" page finished and pics of my subwoofers posted.  I've got a lot more content and photos to add, but the rebuilding of the RL60's have consumed much of my time.  Thanks for visiting my site and join my forum to help me get some members as the site is brand new.

Mike Casoon