Speakers parameters index

As we all know that the speaker parameters will directly impact the sounds quality!

There are few parameters are very important for the speaker quality ,they are power, frequency range and frequency response,Db, degree of distortion,the sensitivity, impedance,signal-to-noise ratio etc.

Today i would to elaborate the what's power and what power is good.

power,the maximum sound intensity is depend on power ,just like impact of the speakers voice can have .According to international standards, power has two species mark method:

(1) rated power (RMS: sine wave are square):  refers to a rated range drive a 8Ω speakers wave forming continued simulation signal, in interval and repeat  times , speakers do not happen to damaged the maximum electric power.

(2)moments peak power (PMPO power): refers to speakers in a short time can bear maximum power. The Federal Trade Commission in 1974 requires power calibration standards: two channels to drive an 8Ωspeaker load, harmonic distortion is less than 1% around the 20~20000Hz measure effective wattage, which is the output power of the amplifier, marked output power . Speaker power depend on amplifier chip power and transformer  power . For the average home user for about 20 square meters rooms, real 60 W power (refer to speaker output power of 30 Wx2) is enough, but power reserve power of bigger is better, the best for the actual power output more than twice times. Speaker output 30 W power amplifier the best more than 60 W.

Here is a 4Ω ，3 W water poof speaker，sounds great for shower and outdoor.