Series IV speaker

Series IV speakers were a type of speaker manufactured by ComTech that were present in pairs in the helmet worn by Imperial stormtroopers. They used a three-phase sonic filtering for clear sound.^[1]

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Sources

• Star Wars Helmet Collection: Stormtrooper Helmets: Imperial Stormtroopers (First identified as Series IV speaker system)
• Star Wars: Rogue One: The Ultimate Visual Guide (First identified as Series IV speaker)

Notes and references