QT0017509
20.8 core
QT0017509, voice coil 20.8 core, OD 80 mm / ID 20.8 mm / SOD 74.3 mm, material NC-20/S Built for speaker spider, damper, and loudspeaker suspension sourcing checks.
Buying Notes
Specification check: confirm OD, ID, SOD, FH, EH, voice-coil group, and material code instead of ordering by model alone.
Sample matching: send clear photos, drawings, or key measurements when the original model is unclear.
Quote support: share quantity, destination market, and sampling needs so pricing and lead time can be confirmed.
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