低音炮 Traditional form: 低音炮 Pinyin (reading): dīyīnpào Definitions: subwoofer Characters: 低 - low; to lower, to hang; to bend, to bow 音 - sound, tone, pitch, pronunciation 炮 - cannon, artillery Traditional characters: 低 - low; to lower, to hang; to bend, to bow 音 - sound, tone, pitch, pronunciation 炮 - cannon, artillery