The existing Arabic translation has a grammatical issue. Here is the improved version: مكبر صوت ترددات منخفضة مقاس 15 بوصة **Explanation of improvement:** - The original translation lacks proper agreement and structure. The phrase "ترددات منخفضة" (low frequencies) is a feminine plural adjective, but "مكبر صوت" (loudspeaker) is masculine singular, creating a gender mismatch. - The corrected version uses "مكبر صوت ترددات منخفضة" (low-frequency loudspeaker) with the genitive construct إضافة (iḍāfah), where "ترددات منخفضة" functions as a descriptive genitive. - Adding "مقاس" (size/measure) before "15 بوصة" clarifies the dimension specification and improves readability in technical B2B context. - This follows MSA conventions for technical product naming and maintains professional register appropriate for HARMAN product descriptions.

**Improved Arabic translation:** مضخم صوت مزدوج بحجم 18 بوصة **Explanation of changes:** 1. **مضخم صوت** instead of **مضخم باص**: The term "باص" (bass) is a transliteration, not proper Arabic. The correct MSA term for a subwoofer is **مضخم الصوت** (literally "sound amplifier") or more precisely **مضخم الترددات المنخفضة** (low-frequency amplifier). However, in B2B audio equipment contexts, **مضخم صوت** is the established professional term for subwoofer. 2. The rest of the structure (مزدوج = dual, بحجم 18 بوصة = 18-inch) remains correct and concise, matching the brevity of the English original. 3. Grammar and register are now formally appropriate for professional B2B audio equipment copy in Modern Standard Arabic.