intros：{"brand_intro":"天龙成立于1910年，是日本历史最悠久的音响品牌之一，早期以专业留声机和广播设备闻名。天龙在家庭影院领域拥有极高地位，其AV功放长期被视为行业标杆。品牌核心技术包括AL32 Processing（高精度数字音频处理）、D.D.S.C. HD（动态分立环绕声电路）以及独家HEOS多房间无线系统。天龙回音壁产品线继承了功放领域的声学调校经验，强调\"真实还原\"和\"大动态\"。品控方面，天龙坚持日本本土设计、中国精密制造，每台产品经过48小时老化测试。创始人Frederick Whitney Horn（美国籍）将天龙打造为\"声音的忠实传递者\"，这一理念至今体现在产品中性的音色上。DHT-S517H是其中端主力，主打\"小体积、大能量\"。","product_intro":"天龙DHT-S517H是一款5.1.2声道回音壁套装，定位\"入门全景声高性价比之选\"。它包含条形音箱、无线低音炮和两个后环绕音箱（有线连接至低音炮）。核心卖点：支持杜比全景声和DTS:X；低音炮内置天龙独家DSP，低频下潜至35Hz；后环绕通过低音炮供电，减少插座占用；支持HDMI eARC和4K HDR直通。声音风格中性偏暖，人声自然，适合兼顾电影和音乐的用户。相比JBL Bar 9.1，S517H的后环绕音质更好，中频更饱满；相比索尼HT-A7000，价格仅为一半，但声道数和功率较小。适合预算4000元内、希望体验真环绕全景声的入门用户。","key_specs":{"声道架构":"5.1.2物理声道（含2个后环绕）","总功率":"约350W（含低音炮）","天空声道":"2个向上发声单元（位于条形主体）","连接方式":"HDMI eARC/ARC、光纤、蓝牙5.0、USB","低音炮":"6.5英寸无线低音炮（向下发声）","适配人群":"入门影音爱好者、小户型客厅、天龙功放老用户"}}
alt_products：[{"product_name":"天龙 DHT-S517H 5.1.2声道回音壁套装","brand":"天龙（Denon）","model":"DHT-S517H","price":3499},{"product_name":"JBL Bar 9.1 可拆卸无线环绕回音壁","brand":"JBL","model":"JBL Bar 9.1","price":4999}]
kol_quotes：["\"S517H是这个价位少有的'真环绕'回音壁，后环绕不是摆设。\" —— 知乎影音博主@音响老司机","\"天龙做回音壁就像丰田做卡罗拉，不惊艳但绝对可靠。\" —— B站UP主@科技简评","\"如果你听歌多于看电影，S517H比JBL Bar 9.1更适合你。\" —— 小红书影音达人@耳朵会怀孕"]
scoring_breakdown：[{"source":"word_of_mouth","score":86.19999999999999,"weight":0.2,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"综合京东、影音新时代论坛、知乎评价：优点方面，声音均衡，人声和乐器分离度好，听演唱会效果出色；后环绕音质在同价位中最佳，能清晰分辨环境音；低音炮虽尺寸不大，但下潜和弹性不错，不轰头。缺点方面，后环绕需有线连接低音炮，摆放灵活性不如JBL；天空声道效果较弱，需要天花板反射条件好；HDMI接口仅一个eARC，扩展性有限。专业评测（知乎@鬼斧神工）称其为\"3000元档最值得买的回音壁\"。用户满意度约82%，适合注重音质均衡的入门用户。","source_count":3}},{"source":"objective","score":75.9750016672224,"weight":0.5,"confidence":0.5,"details":{"rating_avg":4.4,"price":3499,"wom_score":86.19999999999999}},{"source":"user_review","score":88,"weight":0.15,"confidence":1,"details":{"rating_avg":4.4,"review_count":15000,"source":"product_reviews_aggregate"}},{"source":"expert","score":88,"weight":0.15,"confidence":0.6,"details":{"kol_count":3,"scored_count":3,"sample":["\"S517H是这个价位少有的'真环绕'回音壁，后环绕不是摆设。\" —— 知乎影音博主@音响老司机","\"天龙做回音壁就像丰田做卡罗拉，不惊艳但绝对可靠。\" —— B站UP主@科技简评","\"如果你听歌多于看电影，S517H比JBL Bar 9.1更适合你。\" —— 小红书影音达人@耳朵会怀孕"]}}]