带蓝牙功能的8英寸有源便携式PA音箱 **Explanation of changes:** 1. **扬声器 → 音箱**: In professional B2B audio equipment contexts, "音箱" (cabinet/loudspeaker system) is the more established standard term for a complete powered portable PA unit, whereas "扬声器" (speaker driver) typically refers to individual transducers. Since this is a complete self-contained unit, "音箱" is more precise and professional. 2. **Sentence structure remains natural** and follows proper Chinese technical terminology conventions for audio equipment specifications. All other elements (蓝牙、有源、便携式、PA) are correct and appropriately formal for B2B professional copy.

具有蓝牙功能的12英寸电源驱动便携式PA扬声器

15英寸有源低音炮 **Explanation of change:** - "超低音音箱" (ultra-low frequency speaker cabinet) is technically correct but slightly verbose for a product name/UI label. - "低音炮" (powered subwoofer) is the established, concise professional term in Chinese audio terminology and matches the brevity of the English source. - The translation maintains formal written Chinese and preserves all technical accuracy while improving naturalness and register alignment for B2B professional copy.