SWC-50R18.4-8N0.25R

Features: 
Cone
Voice Applications
High Profile
Characteristic Minimum Rated Maximum Notes
Type of Magnet NdFeB
Type of Frame Metal
Type of Diaphragm Paper
Type Magnetic
Sound Pressure Level dB at 30cm 89.44 Measured 85±3dB at 0.25W and 50cm.
Power W 0.25 0.5
Frequency kHz 0.48 0.48 7
Available Input Impedance Ω 4 8 64
Width mm 50
Height mm 18.4

Dimension Drawing: