BOSE QUIETCOMFORT ULTRA HEADPHONES Noise
| CONF | DIAGNOSIS | PART MATCH | ACTION |
|---|---|---|---|
|
88%
CONF
|
Internal Acoustic Transducer (40mm Driver)
The ANC system requires the speaker driver to respond with nanosecond precision to the DSP's phase-inversion commands. If the driver's diaphragm loses its factory tension or the voice coil develops micro-shorts due to environmental moisture, it cannot accurately reproduce the cancellation wave. This mechanical lag or frequency response shift is perceived by the user as a persistent 'hiss' or static, as the system fails to achieve total destructive interference.
|
|
|
|
12%
CONF
|
Secondary Circuit / Wiring Check
Inspect wiring harness.
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DIY Repair Guide
Watch exactly how to replace the Internal Acoustic Transducer (40mm Driver).