- - More than mere stereo
- - Theater feature that hints at the 12 border entries
- - Dolby, DTS or Sony option
- - Home theater feature, maybe
- - Home theater feature, and a hint to this puzzle's 10 border answers
- - Ringing noise that comes from hi-fi?
- - Home theater feature, and a hint to the puzzle theme in 19-, 22-, 32-, 46-Across and the first word of this answer
- - TV feature, and a clue to six other answers in this puzzle
- - Encircle the bay?
- - Multi-speaker system
- - Audio technique first used commercially for the 1940 animated film Fantasia
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