Headshell for 70s-80s Dual Brand Turntables
thingiverse
Headshell for Dual Brand Turntables: A Recreation of a Rare Original This reproduction headshell is designed for early 70s to late 80s German Dual brand turntables, including the popular 1209 and 1249 models, as well as many others. If you're an avid collector of shellac or own multiple cartridges, you'll likely need several of these. To assemble this project, gather a few basic materials: small pliers, a soldering iron, and the skills to use them. Although it looks distinct from the original, this headshell fits seamlessly and performs flawlessly. Consider adding color-coding to your cartridges for easier identification: black for LPs, blue for shellac, green for spherical cartridges, and so on. The design files, including STL and Autodesk 123D formats, are included for those who want to remix or customize the design further. Take a moment to appreciate this thoughtful recreation, which will breathe new life into your vintage Dual turntables. **Print and Clean the Headshell** Begin by printing the headshell as depicted in Photo #1. To optimize print quality, use ABS material without a raft, with support structures enabled, an additional shell printed, 20% infill density. Ensure thorough cleaning of the printed piece before moving forward. **Gather Essential Components** * Acquire four pins compatible with the Molex P/N 0008650115 connector. Available alternatives include DigiKey's WM2135 or Mouser's 08-65-0115. * If you have an electronic junkbox, check for existing pins that can be repurposed. For the cartridge side, find four mating pins. Alternatively, wrap AWG 26 solid copper wire around a toothpick and adjust it to grasp the cartridge pins without soldering directly onto them. **Assemble the Wiring** * Securely attach 4 one-inch lengths of insulated AWG30 wire. It's essential to have red, white, blue, and green wire for the colors. While the electrons don't distinguish between hues, using appropriately colored wires can aid in understanding the connection sequence. * Bend the Molex pins outward as shown in Photo #2, with an unaltered pin at the top and a modified one below. **Mounting the Headshell Pins** * Use solder to secure pins on each wire as seen in Photo #3. Keep your solder application minimal, given the project's delicate nature. * Insert the Molex pins into the plastic teeth located within the headshell base. As indicated by Photo #4, position them with precision, making sure they are secured firmly. **Securing the Pins with Solder** * Utilize a small iron to fuse the plastic around the inserted pins, as depicted in Photo #5. Ensure these stay immovably fastened. * If the pins exhibit some wiggle, consider adding an adhesive agent like epoxy for enhanced stability. **Modifying Contact Spacing** * Manipulate the interior contacts by twisting them outward and those of the outer set inward to replicate the original's positioning. * Pay attention to accurate spacing: Pins 1-2 and 3-4 should be separated approximately 1.8mm; Pin 2-3 approximately 3.6mm. See Photo #6 for a clear illustration. **Tonearm Testing** * Insert the completed headshell into your turntable's tonearm, ensuring it accurately fits and correctly secures with left-right positioning corresponding to Pins 4/3 respectively at rear. **Assemble Your Cartridge on the Headshell** * Finally, securely attach your cartridge using photos #7 as a reference for wire placement order. The wires correspond from Left to Right in following order: Red(Blue(Rgreen(blue),white), and White(Green,Red) Enjoy Your Vinyl and Shellac with This New Cartridge!
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