| Clue | Source | Date |
|---|---|---|
| Large funnel-shaped devices for amplifying and directing the voice (10) | ||
| Cones of non-silence? | Jonesin | 12 Jan 2016 |
| Sound boosters | Newsday | 25 Dec 2015 |
| Sound boosters | ||
| Amplifiers without wires | ||
| Amplifiers without wires | ||
| Cheerleaders' cones |