Beyerdynamic DT 990 Premium — Cable Strain Relief Replacement
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Replacement strain relief for Beyerdynamic DT 990 Premium. Print in 92A TPU on a 0.25 mm nozzle
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Model information
- Source
- Printables
- Category
- Audio
- License
- Creative Commons — Attribution
Beyerdynamic DT 990 Premium — Cable Strain Relief Replacement
A drop-in replacement strain relief for the Beyerdynamic DT 990 Premium, fixing the most common failure point: the cable breaking where it enters the left earcup.
The Problem
The factory strain relief is too soft. After a few years, the wires inside fracture from repeated flex at the same spot, causing intermittent audio or a dead channel.
The Fix
Cut off the damaged section, slide on the new strain relief in correct direction, resolder. The tapered geometry spreads bending stress over a longer length of cable. Printed in TPU 92A — slightly firmer than original but still flexible.
Print Settings
Material: TPU 92A (90–95A works)
Nozzle: 0.25 mm — required, won't resolve on 0.4 mm
Orientation: On its side
Supports: Small ~8.5 × 1 × 1 mm pillar at the overhanging tip, snip off after printing
Extruder: 240 °C
Bed: 50 °C
Infill: 100%
Printed on a Prusa MK3S.
Assembly — Important
Since the TPU oozes a bit and strings also the tolerances are on the tight side, the hole for the cable most likely won't fit, use a 4mm drill to clean up the hole beforehand.
Thread the strain relief onto the bare cable before soldering.
Order:dissemble → cut → slide on → seat into earcup → strip, tin, solder →reassemble
Notes
Tested on my own DT 990 Premium.