Loudspeaker
A device that broadcasts sound — a means of carrying one voice into a much larger room.
A loudspeaker in a dream is the dream's image of a means of carrying one voice into a much larger room. The speaker is not the voice; it is the amplification. The dream brings the speaker when something in your life — a platform, an audience, an institutional megaphone — is making one voice carry further than it would on its own. A speaker used to carry a clear, honest message is the dream affirming the use of the platform. A speaker used to carry distortion, with the same message coming out louder and uglier, is the dream noting that the amplification has magnified what was wrong in the original, and the room is now full of it.