Coating for Bextrene cone?

Ouroboros · 21st November 2005, 08:00 AM

Does anyone know what the coating is that was used on UK made Bextrene speaker cones in the 1970s and 80s? It's not the C37 type lacquer that is sometimes used on units these days, but appears to be more like PVA.
The reason for asking is that I've just mended an old Richard Allan HP8B bass unit that had the usual 'blisters' on the inside of the Kapton voice-coil former, which was causing the former to contact the magnet. I took off the dust cap and carefully sanded away the blisters on the coil former (a fiddly job but it went OK) and the speaker is now working again. The problem is that when I took off the dust cap it pulled away a section of the old cone coating and I'd like to re-coat the area.

21st November 2005, 08:00 AM	#1
Ouroboros diyAudio Member Join Date: Dec 2003 Location: Nottingham UK	Coating for Bextrene cone? Does anyone know what the coating is that was used on UK made Bextrene speaker cones in the 1970s and 80s? It's not the C37 type lacquer that is sometimes used on units these days, but appears to be more like PVA. The reason for asking is that I've just mended an old Richard Allan HP8B bass unit that had the usual 'blisters' on the inside of the Kapton voice-coil former, which was causing the former to contact the magnet. I took off the dust cap and carefully sanded away the blisters on the coil former (a fiddly job but it went OK) and the speaker is now working again. The problem is that when I took off the dust cap it pulled away a section of the old cone coating and I'd like to re-coat the area.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Looking for Audax bextrene driver for Tangent RS6	dcanuck	Multi-Way	4	3rd November 2011 12:30 AM
Classic Audax Bextrene Units from 80s	Mikett	Multi-Way	6	3rd March 2010 06:31 PM
Coating coated paper cone	Vivek	Multi-Way	5	7th September 2008 08:01 PM
ATC cone resin coating	Mikewong	Multi-Way	14	16th October 2005 12:00 AM
Audax bextrene drive unit replacements	mike.turner	Multi-Way	7	19th June 2004 11:47 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)