Duli - Dual Stereo Over-Ear Headphones

myminifactory

This project started as a manufacturing service and prototype for Yuni, a company that's working on building stereo headphones for people with unilateral hearing loss. The Yuni design features two distinct ear cups; one has two speakers angled towards the ear to preserve sound separation, while the other is a dummy cup without any speakers. This version, called Duli, adapts the original project for dual-hearing use. The Duli headphones have two ear cups, each with its own unique design. One ear cup contains two speaker drivers angled at the ear to maintain clear left and right channel separation. The second ear cup is a dummy unit without any speakers. This innovative approach allows people with unilateral hearing loss to enjoy stereo sound with both ears. Yuni's headphones are available for purchase on their website, but Duli headphones are not yet on sale until Yuni's production backlog is cleared. However, other products from CarryTheWhat can be found on Etsy at https://www.etsy.com/shop/CarryTheWhat. A 'vitamin kit' containing all non-printed parts needed to assemble the Duli headphones is also available on Tindie at https://www.tindie.com/products/CarryTheWhat/duli-headphones-vitamin-kit/. Instructions for assembling the Duli headphones are provided below. To simplify the process, a full vitamin kit of necessary components can be purchased from the same Tindie link. Vitamin Bill Of Materials: - Speaker drivers: $8.76 (available on Digi-Key) - Foam ear pads - 1/8th inch jacks: $3.00 (Radioshack) - 1/8th inch Y-cable: $4.39 (We-Supply) The total cost of the vitamin BOM is approximately $22, plus shipping costs. The printed components required for assembly include: Printed Bill of Materials: - Earcover cap x2 - Earcover x2 - Pin 1 x4 (for joining earcover to earcover caps) - Pin 2 x2 (for joining earcover cup unit to headband) Either: - Headband full OR - Headband half x2 Headband join The headbands can be printed in either one piece or split into two halves, depending on the printer used. The original design was intended for a Replicator 1, but due to inconsistent results, it has been modified to accommodate a Rostock Max. Assembly requires four small lengths of wire with stripped ends and some basic soldering skills. Connect the speaker drivers to their respective jacks, taking care to match the polarity indicated by the pre-soldered pads on the back of each driver. The pad on the right side has a red dot indicating positive polarity. This project is based on OpenSCAD code available at https://github.com/CarryTheWhat/OpenSCAD-projects and has been licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.