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Understanding Bluetooth Speaker Wattage: RMS vs. Peak Power Ratings
Key points
- Wattage does not directly indicate Bluetooth speaker loudness.
- Speakers have RMS (sustained) and peak (maximum burst) power ratings.
- Manufacturers often list peak power, not RMS, making comparisons difficult.
- Retailers frequently do not distinguish between RMS and peak ratings.
Wattage and Loudness Misconceptions
Many consumers assume that doubling a Bluetooth speaker's wattage will double its loudness, but audio physics do not support this. Wattage indicates the electrical power an amplifier sends to the drivers, not a direct measure of perceived volume or overall speaker quality.
RMS vs. Peak Power Ratings
Speaker power is measured in two ways: RMS (root mean square) and peak ratings. The peak power rating represents the maximum electrical power a speaker's amplifier can handle for short bursts without damage. The RMS figure, however, reflects the sustained power a speaker can handle over extended periods.
It is common for a speaker to have a 40W peak rating but only handle 20W RMS continuously. Manufacturers frequently publish only the maximum peak power, which can make a speaker appear more impressive on paper compared to competitors' RMS ratings.
Challenges in Comparing Speakers
Manufacturers and retailers often do not clearly distinguish between RMS and peak power ratings. For example, the JBL Go 4 has an official spec sheet rating of 4.2W RMS, but some retailers do not list power ratings at all. This lack of consistent reporting makes it difficult for consumers to compare different speakers based solely on their power specifications.
✨ This summary was generated by AI from the outlets' reporting listed below. It is not independently verified and may contain errors — check the original sources. How BrevFeed works →
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Reporting from
This article explains that Bluetooth speaker wattage does not directly correlate with loudness and clarifies the difference between RMS and peak power ratings. It details how manufacturers often prioritize peak ratings, making direct comparisons difficult for consumers.