How is speaker efficiency calculated?
Herewith is the power P = V 2 / R = 2.832 / 8 = 1 watt. With a 4 ohms loudspeaker you generate 2 watts. To get the reference value of 1 watt, you have to subtract from the sensitivity 3 dB.
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Loudspeaker data | ||
---|---|---|
Efficiency | Percent | Sensitivity |
0.02 | 2 % | 95 dB |
0.01 | 1 % | 92 dB |
0.005 | 0.5 % | 89 dB |
What is the SPL of a speaker?
SPL stands for sound pressure level and is also commonly referred to as efficiency and sensitivity. This parameter represents how loud a speaker is. A higher SPL equates to a louder speaker. ... The plot, commonly know as a frequency response graph, shows frequency on an x-axis (in Hz) versus SPL on a y-axis (in dB).