1. Eric Redler Nathan Kubiak

3.  Speakers with accurate sound for a specific use  More reliable than home stereo speakers

4.  Drivers are The actual devices that moves air in a speaker

5.  Direct Radiating Cone Speakers Provide the low and mid frequency components of the audio signal.

6.  Horn Compression Drivers utilize the same core functionality as the cone speaker.  The compression driver is loaded down by air pressure by a horn lens.  More efficient used to reproduce upper midrange and high frequencies.

7.  Sealed Enclosures sealed enclosure eliminate diffraction by closing off the path by which the rear-generated sound wave can combine with the front-generated sound wave.

8.  Infinite Baffle design utilizes a very large sealed enclosure in an attempt to take advantage of the resonance within the enclosure

9.  Acoustic Suspension utilizes a very small enclosure which is sealed to eliminate diffraction.

10.  Bass Reflex attempts to release the audio energy generated inside the enclosure in a way that augments its low frequency response

11.  The Passive Radiator utilizes a passive “Dummy” speaker in addition to the active speaker  the passive speaker has no magnet or coil and doesn’t receive audio signal  it supports the motion of the active speaker by moving additional air to the active speaker.

13.  Transmission Line utilizes an extended length port in an attempt to shift the phase of sound waves generated by the rear of the speaker cone by at least 90 degrees. -

14.  Component Alignment the process of positioning speakers so that the sound they produce is Identical in phase to the source audio signal.

15.  Time alignment the process of positioning speakers so that the sound they produce is identical in phase to the source audio signal

16.  Tweeter A small loud speaker designed to reproduce high-pitch sounds in a high-fidelity audio system