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Moving iron speaker Moving iron sounder. The moving iron speaker was the earliest type of electric loudspeaker. They are still used today in some miniature speakers where small size and low cost are more important than sound quality. A moving iron speaker consists of a ferrous-metal diaphragm or reed, a permanent magnet and a coil of insulated ...
Speakers widely used on TRF sets included: Moving iron speaker (horn or cone) tin can, magnet & wire based speakers; moving coil speaker; TRF sets used no regeneration, and were merely several stages (typically three) of tuned RF amplifiers in series feeding a detector tube which extracted the audio intelligence from the RF signal. TRF sets ...
Moving iron speaker. The original loudspeaker design was the moving iron. Unlike the newer dynamic (moving coil) design, a moving-iron speaker uses a stationary coil to vibrate a magnetized piece of metal (called the iron, reed, or armature). The metal is either attached to the diaphragm or is the diaphragm itself.
I come across lots of headphones, but to my knowledge, there are no current production headphones of any pedigree using moving iron transducers. The most recent moving iron transducers used for audio reproduction I've seen were 1970s era cheap earpieces, used as accessories for the transistor radios of those times. --Rocknrollsuicide 07:06, 13 ...
A PC speaker is a loudspeaker built into some IBM PC compatible computers. The first IBM Personal Computer, model 5150, employed a standard 2.25 inch magnetic driven (dynamic) speaker. [1] More recent computers use a tiny moving-iron or piezo speaker instead. [2]
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