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SWC-77S27.4-8F3R

Features: 
Cone
Voice Applications
External
Characteristic Minimum Rated Maximum Notes
Type of Magnet Ferrite
Type of Frame Metal
Type of Diaphragm Paper
Type Magnetic
Sound Pressure Level dB at 30cm 91.44 Measured 87±3dB at 3W and 50cm.
Power W 3 4
Frequency kHz 0.25 0.25 15
Available Input Impedance Ω 4 8 64
Width mm 77
Height mm 27.4

Dimension Drawing: