In this video I'm restoring a pair of antique German headphones. I've found these headphones at an online auction for $30 and I thought they look pretty cool for a restoration project.
Unfortunately they didn't work anymore. I measured the coils and three of the four were broken. That fact put this little project to a whole new challenge. It required a ton of research to completely understanding every single detail of its function to remake the coils and such. After some trial and error I managed to remake the broken bobbins and rewind the coils. The tricky part was that both coils are connected with eachother at the beginning of the windings in the core. I had to make a special jig, so I could clamp both coils when winding the second one.
The original paint had some kind of a structure in it. It was black matte with some kind of a hammertone pattern. Unfortunately I was not able to find such paint, so I went with regular black matte. To not loose the were fine writings and logo I only applied a very thin layer of primer and coat.
The Bakelite pieces just required some wet sanding and a good polish and they looked like new again. Old Bakelite might contain asbestos, that's why I wet sanded them so there won't be any sanding dust.
I cleaned the membranes with scotch brite after a 24h bath in rust remover. To get rid of the pitting I sanded it with 240 grit sandpaper. I was already down to 0.13mm from 0.2mm thickness, but there was still pitting visible and I just sanded one side. To get the best possible sound at the end I decided to remake both membranes with new 0.2mm steel foil. To match the original membranes I also painted the center black matte.
I nickel plated all the screws and the two brackets like they were originally. The brackets were a little bit weird, because they were two identical ones instead of pair of mirrored ones. I fixed that pretty easy by just bending the shaft on one ion the opposite direction.
I was very lucky that the cable was in nearly perfect condition. It had absolutely no visible damge or fraying, just lost a bit of color. I just had to shorten them. Todays headphones all work with AC, these however back then worked with DC. Therefore the polarity matters. I also marked all endings of the cable with red and black threads, so did I made a red and black plastic cover for the plugs.
In the end I'm very happy how these headphones have turned out. The color combination of the black matte with the shiny black Backelite parts look very classy together with the shiny nickel plated parts and the crispy clean looking knurling is the cherry on top.

I hope you like my work and the video.

Huge thank you to all of my Patreon supporters and especially to:
Adel AlSaffar
Alex McGeorge
Alfonso Baz
Alistair Moor
Amar.k
Anthony Eufemio
Arron Metcalf
Arthur
Bendurion
Brenna Redpath
Chris walter
David Barker
Edward Conway
Embiss
Haitham Al Zir
isaac
james lowe
Jean Ceppi
John Shebanow
Josh Denny
Josh Ledford
Josh Wasserman
Joshua Bentley
Joshua Scher
Kar Marsten
Lambda GPU Workstations
LordPi
Mellissa Marcus
Monte Gibbs
Nathaniel Carver
NoLoneSurvivor
Pat Thrasher
Peter Riddett
potokslow
SophieHDLM
Steve Bothe
StevenVR
Tyler Carruth
VaushVidya
Vickie Bligh
Vince Valenti
Will Black
Xavier Carbel
Yale Baker
Yuri Zapuchlak
Adam Holtzclaw
Alipasha Sadri
Andrew Egerton
Andrew Phillips
Arni Bjorgvinsson
Bonnie Williamson
Brian Hoerl
Chad Bryant
Charles Copenhaver
Crystal Cash
Damien Fuller-Sutherland
Daniel Trejo
Daniel Varga
Dave Hardware
David Ebert
David P Hruska
David Powell
Endless Mike
Grant Daniel
Haley McFadden
Hard_Boiled
Jack Curry
jake meckley
Jason Koi
Jeff Smith
Jeremy Cole
Johan Vergeer
Joël Franusic
Ken Rosso
Kevin Robinson
Kurt Gazow
L Rlta
Liam Rafle
Lina Machina
Marc Cerisier
Marc Staedelin
Mary Casella
Mellissa McConnell
Micheal Bier
Michael Lamp
Mossy_Forrest
Nik
Pasacal Schmikal
Peter Cyprian
Rebecca Miller
Regis Vincent
Rob
Robert Galyen
Sarah Langlais
Scott Marshall
Stefan Kronander
Steven Michalcewicz
Suiros
Svenja Kuckla
Thanny
Tim Holt
Tom Wallace
Trevor Kam
Tucker Ifft
Victoria Emmenegger
William

My camera:
Panasonic HC-VX11

This is an ASMR style video. Especially made to have the best sound quality, so you can enjoy all the authentic sounds created in the workshop in ASMR style.

If you have any questions about the process, machines i'm using or other stuff, just ask me in the comments. I read them all and i try to reply as soon as possible.

Sorry for my bad english, it's not my language. I try my best to improve my technical english.

Subscribe for more of my content. I'm uploading videos about mechanical stuff, as new creations and buildings and also restorations.

Thank you for watching :-)


„I make a new one“ T-Shirts:
https://teespring.com/stores/my-mecha...

My Main Channel:
   / mymechanics  

My Second Channel:
   / mymechanicsinsights  

My Patreon Page:
  / mymechanics