M

1. Magnet Boot
Definition:A rubber or plastic cover for the magnet housing for protection or appearance, mostly the latter.
Submitted on Friday, March 04, 2005 2:47:37 PM

2. Magnet/Magnet Structure:-A combination of magnetic material and connected field concentrators that creates the magnetic field within which the voice coil interacts to produce sound. Magnetic materials have changed greatly over the years to produce much higher concentrations of magnetic fields (rated in gauss) with lighter and smaller volumes of material.
Submitted on Tuesday, January 30, 2007 2:47:37 PM

3. Magnetic Flux Density
The measurement of magnetic flux, in units of Gauss, inside the air gap in which a voice coil of a speaker operates.
Submitted on Tuesday, November 30, 2004 2:47:37 PM

4. Magnetic-Planar Speakers:-A type of speaker that uses a flat diaphragm with a voice coil etched or bonded to it to radiate sound. If the magnets are both in front of and behind the diaphragm, it becomes a push-pull magnetic-planar.
Submitted on Monday, February 28, 2005 2:47:37 PM

5. MASH
An acronym for Multi-stage noise shaping. This is the name given to the digital advances that were introduced after the CD specification had been established.
Submitted on Monday, July 16, 2007 2:47:37 PM

6. Maximum power rating:
A meaningless specification.
Submitted on Monday, November 06, 2006 2:47:37 PM

7. Memo List:
A Custom File feature that allows the user to toggle through the discs, selection titles, or station call letters currently loaded without interrupting playback of the existing disc or station.
Submitted on Tuesday, October 26, 2004 2:47:37 PM

8. Memory
The word most commonly used to refer to a system's ability to retain specific information, particularly; time, stations,.and other preference settings that are electronically stored and governed.
Submitted on Wednesday, August 30, 2006 2:47:37 PM

9. Metal Tape EQ
An equalization circuit that compensates for the unique frequency response characteristics of metal tape.
Submitted on Friday, June 09, 2006 2:47:37 PM

10. Microbar:1. A unit of atmospheric pressure equal to one millionth of a bar. 2. A place to consume the product of microbreweries.
Submitted on Saturday, August 12, 2006 2:47:37 PM

11. Microfarads (mF)
Definition:A measurement of capacitance.
Submitted on Wednesday, June 15, 2005 2:47:37 PM

12. Microprocessor
A multiple semiconductor IC device that can be dedicated or programmed to perform a variety of tasks in many different systems. These exist in virtually all consumer and commercial electronic devices of more than rudimentary functionality.
Submitted on Friday, June 08, 2007 2:47:37 PM

13. Midbass
Definition:Those frequencies roughly between 100 and 300 Hertz. (CPS)
Submitted on Tuesday, May 03, 2005 2:47:37 PM

14. Midbass
Mid frequency bass, usually frequencies just above the sub-bass range, from around 100 - 400 Hz or so.
Submitted on Friday, May 19, 2006 2:47:37 PM

15. Midbass-The range of frequencies just above the subwoofer and just below the midrange. (e.g., A good midbass driver will handle the bandwidth of 80 Hz up to 200 Hz.)
Submitted on Wednesday, February 01, 2006 2:47:37 PM

16. Midbass:The range of frequencies just above the subwoofer and just below the midrange. (e.g., A good midbass driver will handle the bandwidth of 80 Hz up to 200 Hz.)
Submitted on Saturday, March 11, 2006 2:47:37 PM

17. MIDI
Definition:Acronym for Musical Instrument Digital Interface, a standard adopted by the electronic music industry for controlling devices, such as synthesizers and sound cards, that produce music. At minimum, a MIDI representation of a sound includes values for the note's pitch, length, and volume, but can also include additional characteristics, such as attack and decay time.
Submitted on Saturday, December 23, 2006 2:47:37 PM

18. MIDI files-A computer file format containing musical information and performance data capable of being used in MIDI capable devices.
Submitted on Wednesday, February 22, 2006 2:47:37 PM

19. Midrange
A Driver that is usually much smaller than a woofer, but with a surface area greater than the typical tweeter. It reproduces the mid frequency range from approximately 300 to 5000 Hertz. This optimum range can vary considerably from one driver to the next, thus giving the system designer more flexibility in choosing Crossover points for the other drivers.
Submitted on Tuesday, November 21, 2006 2:47:37 PM

20. Midrange:
The range of frequencies that lie between midbass and the high frequencies. (e.g., A good midrange speaker will handle from 200 Hz up to 2 kHz)
Submitted on Monday, February 19, 2007 2:47:37 PM

21. Midrange
Definition:The range of frequencies that lie between midbass and the high frequencies. (e.g., A good midrange speaker will handle from 200 Hz up to 2 kHz)
Submitted on Tuesday, October 10, 2006 2:47:37 PM

22. Midrange:A speaker, (driver), used to reproduce the middle range of frequencies. A midrange is combined with a woofer for low frequencies and a tweeter for high frequencies to form a complete, full-range system.
Submitted on Monday, January 30, 2006 2:47:37 PM

23. Milliamps-A unit of measurement of electric current equal to 1/1000th of an ampere. The milliampere is the most common unit used when measuring quiescent current drain in consumer audio electronics.
Submitted on Wednesday, October 18, 2006 2:47:37 PM

24. Millihenries (mH):-A measurement of inductance.
Submitted on Wednesday, March 02, 2005 2:47:37 PM

25. Mixer:-At its simplest level, an audio processing device used to add (combine or sum) multiple inputs into one or two outputs, complete with level controls on all inputs. From here signal processing is added to each of the inputs and outputs until behemoth monsters with as many as 64 inputs are created -- at a cost of around 10-20 thousand dollars per input for fully digitized and automated boards.
Submitted on Friday, September 02, 2005 2:47:37 PM

26. Mono (monaural)
Definition:The operation of an amplifier in one channel for both input and output. Can refer to an amplifier with only one channel of amplification or operating in bridged mode. For low frequency amplification applications, it provides better phase coherence and less distortion than stereo operation.
Submitted on Saturday, November 05, 2005 2:47:37 PM

27. Monopole
Definition:Any speaker that encloses the backwave of the speaker device even though part of this backwave may be released via. a port or duct. The primary radiation at most frequencies will be from the driver front. If the driver is not enclosed it becomes a dipole.
Submitted on Wednesday, June 06, 2007 2:47:37 PM

28. MOSFET
(Metal Oxide Semiconductor Field Effect Transistor) A type of large output transistor used in the final stages of many power amplifiers, and commonly found in most car and home amplifiers today. These field-effect transistors are controlled by voltage rather than current, like a bipolar transistor. MOSFETs have a significantly higher switching speed than bipolar transistors. They generate almost no loss (little heat generation), which lends the power supply fast response, excellent linearity, and high efficiency.
Submitted on Friday, September 01, 2006 2:47:37 PM

29. MOSFET:-Metal Oxide Semiconductor Field Effect Transistors. Used in most modern, quality car audio amplifiers in the power supply (and sometimes in the output stage). MOSFET's run cooler than normal bipolar transistors, and have a faster switching speed.
Submitted on Tuesday, April 24, 2007 2:47:37 PM

30. MOSFET Power Supply:
A power supply that employs MOSFET transistors to convert DC to AC. Offers superior thermal stability and more accurate switching.
Submitted on Friday, August 12, 2005 2:47:37 PM

31. Motor Structure-In speakers, the complete sound generator or transducer that converts incoming electrical signals to mechanical/acoustic energy or sound. In a dynamic Driver, this includes the magnet, its directive field concentrators or Pole Pieces, and the voice coil that interacts with them.
Submitted on Wednesday, April 27, 2005 2:47:37 PM

32. Motorization:When an electric motor or solenoid device is used to physically move a panel, plate, etc. for the purpose of highlighting certain elements of a car audio system. (e.g., Until we added motorization to our amp board, we had to remove about 20 screws by hand in order to get to the fuses.)
Submitted on Sunday, June 10, 2007 2:47:37 PM

33. Motorization
Definition:When an electric motor or solenoid device is used to physically move a panel, plate, etc. for the purpose of highlighting certain elements of a car audio system. (e.g., Until we added motorization to our amp board, we had to remove about 20 screws by hand in order to get to the fuses.)
Submitted on Saturday, March 18, 2006 2:47:37 PM

34. Mounting Depth-The amount of physical space required to mount a Driver without having any of its parts touch objects below. This is particularly relevant to car speakers where such mounting spaces may be sharply limited as to their ability to accommodate deep speakers with large magnets. Door panels with movable windows are a typical example of where care must be taken in selecting speakers to be mounted. (see Mounting Ring, below)
Submitted on Wednesday, May 18, 2005 2:47:37 PM

35. Mounting Ring:-Often used to describe the circular gasket seal incorporated into the edge of a speaker, traditionally the term "mounting ring" refers to a separate device placed between a Driver and the surface on which it is mounted, for the effect of raising the speaker so that larger and deeper speakers can be accommodated in limited spaces. (see Mounting Depth, above).
Submitted on Wednesday, March 23, 2005 2:47:37 PM

36. MP3:Is the file extension for MPEG, audio layer 3. Layer 3 is one of three coding schemes (layer 1, layer 2 and layer 3) for the compression of audio signals. Layer 3 uses perceptual audio coding and psychoacoustic compression to remove all superfluous information (that, in the opinion of the developers, the human ear doesn't hear anyway). It also adds an algorithm that increases the frequency resolution 18 times higher than that of layer 2. The result is mp3 encoding shrinks the original sound data from a CD by a factor of 12 without sacrificing sound quality.
Submitted on Tuesday, March 14, 2006 2:47:37 PM

37. Muddy:
Listening term. A sound that is poorly defined, sloppy or vague. For example, a "muddy" bass is often boomy with all the notes tending to run together.
Submitted on Wednesday, February 09, 2005 2:47:37 PM

38. Multimeter
A common term used to describe a VOM. A multimeter usually has the ability to measure volts, ohms, and amperes or milliamperes.
Submitted on Tuesday, February 22, 2005 2:47:37 PM

39. Multi-tracking:The process of recording a multi-part performance on separate tracks at different times which allows the engineer to subsequently combine, balance and process those tracks during mixdown.
Submitted on Wednesday, November 09, 2005 2:47:37 PM

40. Mute:-A control found on receivers, some mixers, and certain signal processing units that silences (mutes) a signal path, or output. 2. Someone with much to say but lacking the hardware or software to do so.
Submitted on Thursday, December 21, 2006 2:47:37 PM

41. Muting:-To greatly decrease the volume level. Many receivers and pre-amplifiers have a muting control which allows the volume level to be cut way down without changing the master volume control. Great for when the phone rings.
Submitted on Saturday, June 23, 2007 2:47:37 PM

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