1. Unwanted changes in the sound produced by a loudspeaker

2. High-pitched noise caused when the sound from a loudspeaker is picked up and re-amplified

3. High-frequency sound produced by a loudspeaker

4. Box-like structure that holds the components of a loudspeaker

5. Opposition to the flow of audio signals in a loudspeaker

6. Device used to link loudspeakers to audio systems

7. Part of a loudspeaker that vibrates to produce sound

8. Electronic circuit that separates audio frequencies

9. Individual loudspeaker used to reproduce sound

10. Flexible material that vibrates to produce sound waves

11. Rubber or foam material that edges a loudspeaker cone

12. Allow the flow of audio signals in a loudspeaker circuit

13. Opening in a loudspeaker cabinet to enhance bass response

14. Protective cover for the front of a loudspeaker

15. Component that creates a magnetic field in a loudspeaker

16. Unit used to measure the loudness of a sound

17. Electromagnet used to move the loudspeaker cone

18. Acoustic device that amplifies sound waves