CH1-SC DIY Headphones

Headphone design based around the Peerless Tymphony 50mm driver.

This design is an experiment, it is a modification of the closed-back model that I was working on. The intention was to strike a balance between the open and closed-back designs.

The result is fairly dark and they are heavier than I would prefer, but some may not mind.

The size of the cups was intentionally scaled so that they would fit the wonderful Capra Audio headband and Satyr3 yokes. This means they will also fit a wide range of third-party headbands.

I have tried to document what I have learnt from these projects here https://www.head-fi.org/threads/diy-3d-printed-headphone-journey.979090/


BOM:
Drivers - Peerless 50mm
Pads -
     Recommended -   SoulWit Protein leather fenestrated 
     Alternative -           Aliexpress "OME" On My Ear Fenestrated "punching" 
                                     Brainwavz XL   
Cable Connectors - PJ392 3.5mm
Screws - M3 FHCS and pan head 8 and 10mm
Threaded Inserts - M3 Heat Set
Tuning Material - 1.5mm(1-2mm) 30% wool blend felt
Adhesive - 3M 468MP Adhesive Transfer Tape or alternative

Instructions:
- Printing the rear cup - Set a 15% gyroid infill (based on 0.6 nozzle, adjust % to compensate for alternate-sized nozzles) and for the best results, as shown below, set the print to the default number of bottom layers but reduce the top layers to one. You then want to right-click the model and add a cylindrical modifier. Ensure that both the model and the modifier are centered and scale the modifier to the size shown below, the only settings you want to change in the modifier are the top and bottom layers, which you want to set to 0.
(To try lower the weight further, you can experiment with reducing the infill for the main body while keeping the denser infill in the cylinder modifier. It may impact the acoustics.)

- Felt Tuning - As shown below, cut the felt to fit the plate and adhere it using double-sided tape or some other adhesive. I use 3M 468MP Adhesive Transfer Tape.
     

The Measurements provided are from a custom rig and so aren't comparable to anything else other than the measurements given, as such, I've provided comparisons with other headphones to be used as a known reference.