1. Average power of Bluetooth speaker
The power of a Bluetooth speaker mainly reflects the volume level at which it can play sound. The average power of an ordinary Bluetooth speaker is about 5W, and this kind of speaker is suitable for indoor personal use. For some larger and more powerful speakers, their power can reach more than ten watts. And some larger, suitable for noisy environment speakers can even reach 30W.
2. Calculation of power
Average power: power = output of the effective voltage of the square / impedance
For example: a 10 ohm impedance speaker, if it outputs the effective voltage of 15V, then its average power is about 22.5W.
Peak power: power = instantaneous output of the maximum voltage of the square / impedance
Average power refers to the speaker can continue for a long time output power, while the peak power refers to the speaker at a certain moment in the output of the maximum power, the speaker’s peak power is generally much higher than its average power. But if the speaker to the peak power of the continuous output, it is likely to cause damage to the speaker, so in the selection of speakers, pay attention to consider its average power.
3. The concept of watts in audio
Watt is the unit of power, refers to the electrical power output from the speaker, which reflects the power required to output sound from the speaker. Generally speaking, the higher the power of the speaker, the louder the speaker can play, but the higher the volume does not mean that the speaker’s tone, the better the sound quality.
4. Power size on the impact of the speaker
Usually the higher the power of the speaker, the better its performance, because high power speakers can withstand the maximum power is also higher. The higher the power of the speaker, the greater the volume of the speaker in general, but for the speaker, if it doubles the power, the volume does not double the growth.
And the higher the power of the speaker does not mean that the sound quality of the speaker is better. When the power is too high, the music put out is more distorted and the sound quality is not good.
5. Factors related to speaker wattage
(1) decibel: the higher the power of the speaker, the higher the decibel it can produce, the size of the decibel value reflects the loudness of the sound emitted by the speaker;
(2) sound pressure level: it reflects the efficiency and sensitivity of the speaker, the efficiency of the speaker refers to its ability to convert electrical energy into sound energy. If the sensitivity of the speaker is higher, the power required to emit a larger volume is smaller;
(3) Frequency: Lower frequency sounds from a loudspeaker require more power, so the lower the frequency of the loudspeaker, the more energy it consumes.
6. How to choose the correct wattage of the speaker
(1) Consider where to use: If you choose to use it at home and other places with less space, the first thing to consider is the sound quality of the speaker. But if you want to use it outdoors, you should also consider its portability.
(2) Consider the model and quality: a good quality speaker can bring you a good sense of experience, from the speaker’s sound quality, service life and other aspects of the comprehensive consideration, and then check the user reviews, choose a more suitable for your speaker.
(3) the noise intensity of the surrounding environment: if you are going to choose a use in parties, concerts and other noisy locations, to consider choosing a more powerful speakers. But if it is to be used in a room for playing music while relaxing, then a less powerful speaker will be enough to meet your needs.
Conclusion:
Using solar power system to charge your Bluetooth speaker is a good option when it runs out of power. If you are in an area with an average of 6h of sunshine per day, then to fully charge your 20W Bluetooth speaker, choosing a 30W solar panel will be enough.
