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Source for 1-piece gasket for HMV No.4 ?

Posted: Sun Feb 05, 2017 3:25 pm
by hearsedriver
Does anyone know of a source for a one-piece diaphragm gasket for a HMV No. 4 ?

Re: Source for 1-piece gasket for HMV No.4 ?

Posted: Sun Feb 05, 2017 4:42 pm
by AZ*
See this thread.

http://forum.talkingmachine.info/viewto ... 11&t=28527

Although I use soft white Exhibition tubing. Although it doesn't look authentic, I find the soundbox sounds better than with the original style rubbers.

Just my 2c.

Re: Source for 1-piece gasket for HMV No.4 ?

Posted: Sun Feb 05, 2017 5:02 pm
by gramophone-georg
AZ* wrote:See this thread.

http://forum.talkingmachine.info/viewto ... 11&t=28527

Although I use soft white Exhibition tubing. Although it doesn't look authentic, I find the soundbox sounds better than with the original style rubbers.

Just my 2c.
Same method I use and I agree. I am experimenting with methods to make the tubing black.

Re: Source for 1-piece gasket for HMV No.4 ?

Posted: Sun Feb 05, 2017 7:32 pm
by gramophone-georg
Black magic marker, while somewhat tedious, seems to do a great and permanent job of making the white tubing black, so I think the appearance issue is solved.

Re: Source for 1-piece gasket for HMV No.4 ?

Posted: Sun Feb 05, 2017 10:00 pm
by Oceangoer1
Aren't these gaskets available on eBay?

https://www.ebay.com/itm/380573511027

-Connor

Re: Source for 1-piece gasket for HMV No.4 ?

Posted: Sun Feb 05, 2017 10:35 pm
by gramophone-georg
Oceangoer1 wrote:Aren't these gaskets available on eBay?

https://www.ebay.com/itm/380573511027

-Connor
Yes, but they aren't a one-piece gasket like original.

Two of us so far feel that the Exhibition type tubing gives better response as well.

Re: Source for 1-piece gasket for HMV No.4 ?

Posted: Sun Feb 05, 2017 10:39 pm
by hearsedriver
I'll try the Exhibition tubing. It can be dyed with either aniline dye or Feibrings leather dye pretty easily.

Re: Source for 1-piece gasket for HMV No.4 ?

Posted: Mon Feb 06, 2017 2:38 am
by CarlosV
gramophone-georg wrote: Two of us so far feel that the Exhibition type tubing gives better response as well.
Count three: I bought a modern one-piece red gasket some three years ago from a seller in England, but I found the gasket too hard and ended up using tubing, with a much better sound. I believe the one-piece replacement stock is depleted anyway, as I haven't seen any for sale recently. If you are picky and care about tubing color, you can find reddish tubing, there is a guy in French ebay selling it, see http://www.ebay.fr/itm/50-centimetre-si ... Swal5YG1rk

Re: Source for 1-piece gasket for HMV No.4 ?

Posted: Mon Feb 06, 2017 3:40 am
by gramophone-georg
CarlosV wrote:
gramophone-georg wrote: Two of us so far feel that the Exhibition type tubing gives better response as well.
Count three: I bought a modern one-piece red gasket some three years ago from a seller in England, but I found the gasket too hard and ended up using tubing, with a much better sound. I believe the one-piece replacement stock is depleted anyway, as I haven't seen any for sale recently. If you are picky and care about tubing color, you can find reddish tubing, there is a guy in French ebay selling it, see http://www.ebay.fr/itm/50-centimetre-si ... Swal5YG1rk
Nice- he has it in black, too. :D Thanks for the tip!

Re: Source for 1-piece gasket for HMV No.4 ?

Posted: Mon Feb 06, 2017 8:02 am
by MicaMonster
The perfect replacement is 2 mm silicone medical tubing. It offers gentle clamping pressure as the original gasket did, But you need to glue it onto the diaphragm before installation, or install a diaphragm of the diameter 2-3/16 inch to compensate for the smaller diameter gasketing. I had considered having these gaskets made, but the set up cost for manufacturing made it prohibitive, especially since the amount of people that would actually purchase a gasket for five dollars, or four dollars, wouldn't make up for the set up cost. Those red rubber washers being sold on the Internet don't work, the hard ones, or the soft ones. If they did people would be raving about them, including me :lol: