Related Clues:
- It will infuriate you after the short start of 11 across, by the sound of it
- Its address will infuriate one at last
- Call to Margaret, but not by a telephone
- Give Margaret a ring - or a shout with this
- That'll make it sound a lot to give Margaret a ring, but not for her finger
- Its announcements irritate one at last
- Cone-shaped device to intensify the human voice
- Voice amplifier
- Sound director gives Margaret a ring
- Public address makes travel start to get irritating
- Sound amplification system
- Funnel-shaped voice amplifier
- *Underwater speaker?
- Antony prepared for public address
- What gives the volume in a cone?