Model: RB-2720008F-01R

Dimension: 27mm x 20mm

Magnet: Materials NDEFB   size: ø11.0mm x 1.5mm

Impedance: 8 Ohms ±15% at 1500Hz/1.0V

Power rating: Normal 1.0W,  Maximum 2.0W

Lowest respond frequency: 750Hz ±150

S.P.L: 92±3dB/1.0Watt 0.1Meter average at 1000, 1200, 1500, 2000Hz.

Frequency range: 300 - 20000Hz, average SPL-10dB.

Distortion: 3% Maximum at 1000Hz. 1.0W

Abnormal sound test: Must be normal by 2.83V sine wave

Polarity: Diaphragm will more forward when apply a positive DC current to the "+" or "marked" terminal.

Operating temperature: -20 to +50

Storage temperature: -25 to +55

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