case studies — opendoorslowly | stephen wahl

Headphone development

Tool finishing and inspection _ Taipei

First shot from tooling _ Taipei

Die cast fabrication _ Dongguan

Engineering validation test _ Taipei

Engineering validation test (EVT)

parts are prepared for EVT units

Sub-assembly components are prepared

Sub-assembly parts are prepared

Sub-assemblies are fabricated

Sub-assemblies are fabricated

Functional tests along the way

completed sub-assemblies

Assembly of external parts

Assembly of external parts

Assembly of external parts

inspection of external parts

Right side sub-assemblies added to external parts

Left side sub-assemblies added to external parts

completed EVT unit no.1

Initial tuning target is measured

completed EVT unit no.1

Initial sound evaluation

In parallel mechanical improvements evaluated

Twist vs. fold

Twist function validation

Twist confirmed

Design validation test _ Taipei

Final tuning is an art form

©2024 – opendoorslowly | stephen wahl