APM-TEC Diameter (mm) Height (mm) Impedance (Ω) Fundamental Frequency (Hz) Frequency range F0 – (Hz) Power rating (Rated / Max) (W) *Sound Output (dB) Frame Material Diaphragm
APM-L666608P-1W 66*66 21 8 280 3,5 1.0 / 2.0 84 ± 3 Metal Paper

*Tested at 1m 1W  0.6K 0.8K 1K 1.2KHz average