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Re: Demonstrating another custom diaphragm.
Posted: Mon Jul 04, 2016 5:22 am
by Marco Gilardetti
Perhaps I missed how you make these custom diaphragms in a previous thread. Are they made using a standard mica base, to which some dampening compound is pasted in the central area? Coincidentally, I have observed many times that the sound of a soundbox improves (or at least to my ears it does) if the diaphragm is a bit dampened: it helps avoiding rattles, and the sound feels more balanced in the high tones end of the spectrum.
Re: Demonstrating another custom diaphragm.
Posted: Mon Jul 04, 2016 3:12 pm
by Phonoboy
Marco Gilardetti wrote:Perhaps I missed how you make these custom diaphragms in a previous thread. Are they made using a standard mica base, to which some dampening compound is pasted in the central area? Coincidentally, I have observed many times that the sound of a soundbox improves (or at least to my ears it does) if the diaphragm is a bit dampened: it helps avoiding rattles, and the sound feels more balanced in the high tones end of the spectrum.
They're of a rice paper and fiberglass resin base with a polystyrene stiffener. Edison did use stepped mica diaphragms in some cylinder machines.
Re: Demonstrating another custom diaphragm.
Posted: Sat Jul 09, 2016 5:08 pm
by Victrolacollector
I finally had some time today to make a installation, test and video of the diaphragm which he sent me for testing.
I installed it in my Victrola No. 2 and it worked great. I decided I would check one of my lateral reproducers that I use on an adapter, and installed it into this reproducer and it works great (fortunately, the reproducer diaphragm is the same as a Victrola No. 2).
Here is the video, you may hear some distortion in the video which is not present in the actual recording.
https://www.youtube.com/watch?v=oQ2A3gl1nXs
Great job!
Jerry P.
Re: Demonstrating another custom diaphragm.
Posted: Sat Jul 09, 2016 11:22 pm
by Phonoboy
Victrolacollector wrote:I finally had some time today to make a installation, test and video of Nick's diaphragm which he sent me for testing.
I installed it in my Victrola No. 2 and it worked great. I decided I would check one of my lateral reproducers that I use on an adapter, and installed it into this reproducer and it works great (fortunately, the reproducer diaphragm is the same as a Victrola No. 2).
Here is the video, you may hear some distortion in the video which is not present in the actual recording.
https://www.youtube.com/watch?v=oQ2A3gl1nXs
Great Job Nick!
Jerry P.
Wrong fourm member, but im glad you like it. Thanks.
Re: Demonstrating another custom diaphragm.
Posted: Sun Jul 10, 2016 2:31 pm
by Valecnik
Phonoboy wrote:CarlosV wrote:It sounds quite good, it would be nice to hear it playing an electrical recording. Have you adapted your Edison diaphragm to the Victor 2?
An electric demo as promised.
https://youtu.be/7DdBPSuCV_s
It sounds very good. Rudy Valley I think?
What type of needle did you use?
Re: Demonstrating another custom diaphragm.
Posted: Sun Jul 10, 2016 2:45 pm
by Phonoboy
Valecnik wrote:Phonoboy wrote:CarlosV wrote:It sounds quite good, it would be nice to hear it playing an electrical recording. Have you adapted your Edison diaphragm to the Victor 2?
An electric demo as promised.
https://youtu.be/7DdBPSuCV_s
It sounds very good. Rudy Valley I think?
What type of needle did you use?
I used a medium needle on that one. Thanks.
Re: Demonstrating another custom diaphragm.
Posted: Fri Jul 15, 2016 11:29 am
by donniej
Sounds absolutely incredible!
Do you mind if I ask how thick the rice paper is?
Re: Demonstrating another custom diaphragm.
Posted: Fri Jul 15, 2016 1:50 pm
by CarlosV
Phonoboy wrote:CarlosV wrote:It sounds quite good, it would be nice to hear it playing an electrical recording. Have you adapted your Edison diaphragm to the Victor 2?
An electric demo as promised.
https://youtu.be/7DdBPSuCV_s
Indeed it sounds great, it is a vast improvement over the mica, congratulations for the inventiveness!
Re: Demonstrating another custom diaphragm.
Posted: Fri Jul 15, 2016 3:08 pm
by Phonoboy
donniej wrote:Sounds absolutely incredible!
Do you mind if I ask how thick the rice paper is?
0.0125 ish"
Re: Demonstrating another custom diaphragm.
Posted: Fri Jul 15, 2016 3:09 pm
by Phonoboy
CarlosV wrote:Phonoboy wrote:CarlosV wrote:It sounds quite good, it would be nice to hear it playing an electrical recording. Have you adapted your Edison diaphragm to the Victor 2?
An electric demo as promised.
https://youtu.be/7DdBPSuCV_s
Indeed it sounds great, it is a vast improvement over the mica, congratulations for the inventiveness!
I appreciate that. Thanks.