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स्पीकर्स टेस्ट ध्वनि (15-20000 हर्ट्ज) – 30 मिनट रैखिक आयाम, पूर्ण रेंज, बास, मध्यम और ट्रेबल – वीडियो स्पेक्ट्रम और उच्च गुणवत्ता वाले ऑडियो.
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