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
Hi, I am not sure if this was posted already somewhere, but I could not find it:
I have a beomaster 900K that I would like to restore, and although it does not work perfectly it is promising. When detaching the speaker fronts it is clear that the fabric/paper speakers are really fragile, and I am afraid to ruin them if I clean them. Here are some pictures:
Is there a way to clean them? And perhaps also a way to strengthen them, with a spray glue or something, because I would like to listen to it at higher volumes as well without being afraid that it tears.
Any experience is welcomed! Thanks.
Beosound 5 Encore + Beosystem 5500 + S45.2; BV7-40 MKV + BL7.1 + BL14.4+ AppleTV4; various link rooms with MCL2 A or MCL2 A/V + RL60.2 / CX100 / CX50 & Cona / IWS2000; BG4000; Beosystem 1200 + BV1600.
If they work, I wouldn't touch them. Certainly not to try to 'clean' them. The discolouration is probably age related and I suspect any effort to clean them will disintegrate them.
You can coat the paper and cones with a coating available called Visaton LTS50:
http://www.ebay.co.uk/itm/Visaton-Coating-liquid-for-loudspeaker-speaker-cones-/271630026553?hash=item3f3e694739
It may help hold the paper together.
Dave.
Dave Farr:You can coat the paper and cones with a coating available called Visaton LTS50
Thank you Dave! Do you have experience with that stuff? Is it a spray, or do I apply it with a brush? I will stay away from cleaning them as per your advice.
It's brush on but it really soaks in quickly and should 'wick' through the paper. A very soft brush should be fine - and a steady hand! I've used it on some speakers and have no adverse issues with it.
The discoloration on your cones is normal.Usually, a soft brush for dusting is all that's needed to clean the cones.
The Visaton product is basically nothing more than thinned white woodworkers glue.It stiffens the cones paper material.This is good for the flat cone areas but NOT for the flexible parts in the cone circumference.I have found a contact glue that, if not "contacted" by another similarly glued surface, hardens to a flexible rubber substance. A bit like latex.I brush it on using a small paintbrush.
Martin
Dillen:I have found a contact glue that, if not "contacted" by another similarly glued surface, hardens to a flexible rubber substance. A bit like latex.I brush it on using a small paintbrush.
Hi Martin thanks for the input. Do you have a brand name that I can look for?
Casco 2960