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Do not use this unit within 22 cm (9 inches) of persons ... Do not use an 8 cm (3”) to 12 cm (5”) adapter ... (17-1/8 × 3-3/8 × 10-1/8 in). Weight ...
https://sg.yamaha.com/files/download/other_assets/2/328262/BD-S673_om_ABL-1.pdf