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 Post subject: Question about a Brunswick diamond stylus connection
PostPosted: Tue Apr 30, 2019 3:04 pm 
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Victor III
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Joined: Thu Apr 13, 2017 7:31 pm
Posts: 842
Location: New Hampshire’s West Coast
I have a Brunswick Ultona reproducer. The diamond stylus connects to the diaphragm with what appears to be a thin cord. Mine is broken. Does anyone know what material the cord is made from and if these are available?


Thanks


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 Post subject: Re: Question about a Brunswick diamond stylus connection
PostPosted: Tue Apr 30, 2019 3:57 pm 
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Victor V
Joined: Mon Oct 03, 2011 7:54 pm
Posts: 2583
I don't know specifically what it's made from on the Brunswick, but when the equivalent cord on the Edison Diamond Disk reproducer breaks, dental floss is a popular choice for replacement material.


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 Post subject: Re: Question about a Brunswick diamond stylus connection
PostPosted: Tue Apr 30, 2019 6:39 pm 
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Victor IV
I've got both kinds of music--classical & rag-time.
Joined: Fri Oct 06, 2017 11:39 am
Posts: 1090
Location: South Carolina
A very heavy monofilament fishing line, say, of eighty pounds test, is a good substitute as well for the Edison cords. The monofilament transfers vibration very well indeed and can work as a drawband on portable typewriters if you're going to use the other 50 yards left over. ;)

Good luck with your Ultona reproducer--those things are so neat!


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 Post subject: Re: Question about a Brunswick diamond stylus connection
PostPosted: Wed May 01, 2019 7:55 am 
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Victor III
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Location: New Hampshire’s West Coast
Thanks for the help. Dental floss would not have occurred to me, but seems logical. I have Fluorocarbon ukulele strings. I think that I will try one of those. I will share the result. The original seemed to be more supple. Maybe Kevlar thread would be a good choice.


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 Post subject: Re: Question about a Brunswick diamond stylus connection
PostPosted: Wed May 01, 2019 9:58 am 
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VTLA
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Location: Delaware
I believe the original threads on Edison DD reproducers were made from braided silk thread. Not sure if Brunswick used the same?

Andreas


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 Post subject: Re: Question about a Brunswick diamond stylus connection
PostPosted: Wed May 01, 2019 12:37 pm 
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Victor III
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Joined: Mon Jul 02, 2012 9:57 am
Posts: 584
Location: Hampshire, England.
The Brunswick Ultona examples I have seen seem to be braided silk. Superbly designed reproducer with excellent performance although some suffer from being made from the dreaded pot metal. However, the quality seems to vary (presumably according to the preponderance of lead content) and many are fine.


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 Post subject: Re: Question about a Brunswick diamond stylus connection
PostPosted: Thu May 02, 2019 7:22 am 
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Victor IV
Joined: Wed Jan 07, 2009 8:44 pm
Posts: 1503
In my testing to create a diaphragm for the Edison disc machines I too used the dental floss which probably 8 years or more ago by now was considered a good choice. However its not easy to tie into a neat link an they tended to stretch over time throwing the stylus bar off of its level position. I still use two loops of button or craft thread for my True Tone versions. I know a lot of people don't, but again in testing it gives a clean and clear sound. I once bought reproduction links to see how they sounded. I hate to say it dulled the sound considerably. Not so easy to totally recreate things with new materials it seems.


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 Post subject: Re: Question about a Brunswick diamond stylus connection
PostPosted: Sun May 05, 2019 8:41 am 
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Victor III
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Joined: Sat Feb 28, 2009 1:52 pm
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Location: the Adirondacks
Dacron fly fishing line.... stronger than strong and an excellent passive filter for high frequency surface noise.
-Antique Phonograph Reproducer Restorer-
http://www.EdisonDiamondDisc.com
Taming Orthophonics Daily!


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 Post subject: Re: Question about a Brunswick diamond stylus connection
PostPosted: Sun May 05, 2019 12:19 pm 
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Victor III
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Joined: Thu Apr 13, 2017 7:31 pm
Posts: 842
Location: New Hampshire’s West Coast
MicaMonster wrote:
Dacron fly fishing line.... stronger than strong and an excellent passive filter for high frequency surface noise.


That sounds perfect, thanks.


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