Also termed a dynamic speaker. A speaker in which the moving diaphragm is attached to a coil, which is driven by audio frequency currents. These currents interact with a fixed magnetic field and cause the diaphragm to vibrate in unison.
"I just wanted to thank you for the excellent work you did on my transfers! I have had bad experiences in the past and I am grateful to have found you 5 years ago- someone I can trust who does superior quality work! I will definitely be ordering more transfers in the new year!"