Bird B Gone Sonic Speaker Set for Bird Chase Super Sonic only. Add more coverage to your Bird Chase Super Sonic with add on speakers. The speaker set (2 speakers per set) will give you an additional 2 acres of coverage. The speakers plug into the Bird Chase or Goose-B-Gone Sonic unit directly are weatherproof and come with 100 ft. of speaker wire each. Each Speaker provides 2 additional acres of coverage. Weatherproof. 100 ft. of speaker wire per speaker. Can be set to turn off at night.