MartinLogan Script Spécifications Page 24
- Page / 28
- Table des matières
- DEPANNAGE
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
AC. Abbreviation for alternating current.
Active crossover. Uses active devices (transistors, ICs, tubes)
and some form of power supply to operate.
Amplitude. The extreme range of a signal. Usually measured
from the average to the extreme.
Arc. The visible sparks generated by an electrical discharge.
Bass. The lowest frequencies of sound.
Bi-Amplification. Uses an electronic crossover, or line-level
passive crossover, and separate power amplifiers for the
high and low frequency loudspeaker drivers.
Capacitance. That property of a capacitor which determines
how much charge can be stored in it for a given potential
difference between its terminals, measured in farads, by
the ratio of the charge stored to the potential difference.
Capacitor. A device consisting of two or more conducting
plates separated from one another by an insulating material
and used for storing an electrical charge. Sometimes called
a condenser.
Clipping. Distortion of a signal by its being chopped off. An
overload problem caused by pushing an amplifier beyond its
capabilities. The flat-topped signal has high levels of harmon-
ic distortion which creates heat in a loudspeaker and is the
major cause of loudspeaker component failure.
Crossover. An electrical circuit that divides a full bandwidth
signal into the desired frequency bands for the loudspeaker
components.
dB (decibel). A numerical expression of the relative loud-
ness of a sound. The difference in decibels between two
sounds is ten times the Base 10 logarithm of the ratio of
their power levels.
DC. Abbreviation for direct current.
Diffraction. The breaking up of a sound wave caused by
some type of mechanical interference such as a cabinet
edge, grill frame or other similar object.
Diaphragm. A thin flexible membrane or cone that vibrates
in response to electrical signals to produce sound waves.
Distortion. Usually referred to in terms of total harmonic
distortion (THD) which is the percentage of unwanted
harmonics of the drive signal present with the wanted signal.
Generally used to mean any unwanted change introduced
by the device under question.
Driver. See transducer.
Dynamic Range. The range between the quietest and the
loudest sounds a device can handle (often quoted in dB).
Efficiency. The acoustic power delivered for a given electrical
input. Often expressed as decibels/watt/meter (dB/w/m).
ESL. Abbreviation for electrostatic loudspeaker.
Headroom. The difference, in decibels, between the peak
and RMS levels in program material.
Hybrid. A product created by the marriage of two different
technologies. Meant here as the combination of a dynamic
woofer with an electrostatic transducer.
Hz (Hertz). Unit of frequency equivalent to the number of
cycles per second.
Imaging. To make a representation or imitation of the original
sonic event.
Impedance. The total opposition offered by an electric circuit
to the flow of an alternating current of a single frequency. It
is a combination of resistance and reactance and is measured
in ohms. Remember that a speaker’s impedance changes
with frequency, it is not a constant value.
24 Glossary of Audio Terms
GLOSSARY OF AUDIO TERMS
- M ARTIN L OGAN 1
- CONTENTS &INTRODUCTION 2
- INSTALLATION IN BRIEF 3
- OPERATION 4
- 4" and 6
- 8" drill bits 6
- 8" bit, drill a pilot 8
- 8" Allen tool 10
- ROOM ACOUSTICS 11
- DISPERSION INTERACTIONS 12
- HOME THEATER 14
- ELECTROSTATIC ADVANTAGES 15
- Full Range Operation 16
- MARTINLOGAN EXCLUSIVES 17
- “contestants” down to the 18
- Rice and Kellogg had 18
- These developments allow 19
- FREQUENTLY ASKED QUESTIONS 20
- TROUBLESHOOTING 22
- GENERAL INFORMATION 23
- GLOSSARY OF AUDIO TERMS 24
- 26 Notes 26
- Notes 27 27
- ARTIN L OGAN 28
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