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Tannoy HPD Surrounds
Tannoy HPD Surrounds
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Old 14th July 2008, 05:48 PM   #1
rhw4 is offline rhw4  United Kingdom
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Default Tannoy HPD Surrounds


I have replaced the surrounds on my HPD's does anyone know what I can coat them with to replicate the original finish?

Kind Regards,
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Old 16th July 2008, 05:21 PM   #2
Diogenes is offline Diogenes  United States
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Join Date: Jun 2004
Location: WA
Supposedly, the coating can be replicated by brushing the glue used to refoam the drivers over the surround. However, that is shaky information and came from other owners as opposed to a more official source. I'm not sure what the original intention of the "tannoplas" was as it doesn't make a great deal of sense to me to specially make a very high compliance surround and then stiffen it again with a glue-like coating.

If you haven't tried yet, you may be able to find some good suggestions on the Tannoy Yahoo! Group.
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Old 20th July 2008, 01:24 AM   #3
sq225917 is offline sq225917  United Kingdom
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Send a message via MSN to sq225917 Tannoy HPD Surrounds
the glue delays age deterioation in the surrounds and stiffens them up to provide a better impedence match/termination.
Paradise Pre-reg PSU PCBs
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Old 20th July 2008, 02:02 AM   #4
moray james is offline moray james  Canada
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Default you can use...

siloconize latex caulk which is water based. Thin it down and give it a few coats. My HPD's were factory done and the surround is coated.
moray james
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Old 20th July 2008, 07:24 AM   #5
GraemeC is offline GraemeC  Australia
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Join Date: May 2006
I replaced the foam surrounds on my HPD385's a couple of years ago withTannoy surrounds from Speakerbits, Melbourne, Australia. They came with two little plastic bottles full of white liquid. One was a glue and the other was a "stiffener" which was painted onto the surrounds (two coats) after the job was finished.

Both bottles seemed identical and looked and smelled like PVA glue - do not really know what they were tho'.

It might be worth you emailing Tom Manning at Speakerbits - he might be able to supply the "stiffener".


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Old 21st July 2008, 02:24 PM   #6
rhw4 is offline rhw4  United Kingdom
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Join Date: Jul 2008
Default Thanks all

Thanks for all the replies, they have proved very useful, 1 other question, again on glues does anyone know the type of glue that holds the reinforcing bones to the back of the cone is?

Am trying to make as good a repair as I can and cosmetically it would be better if I could touch up the gloe on the bones where they attach to the new surround. The original has set a rigid white?

Thanks once again.
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