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Quest User's Manual
MidrangeMidrange
MidrangeMidrange
Midrange. The middle frequencies
where the ear is the most
sensitive.
Passive crossoverPassive crossover
Passive crossoverPassive crossover
Passive crossover. Uses no active
components (transistors, IC’s,
tubes) and needs no power
supply (AC, DC, battery) to
operate. The crossover in a
typical loudspeaker is of the
passive variety. Passive cross-
overs consist of capacitors,
inductors and resistors.
PhasePhase
PhasePhase
Phase. The amount by which one
sine wave leads or lags a second
wave of the same frequency. The
difference is described by the
term phase angle. Sine waves in
phase reinforce each other; those
out of phase cancel.
Pink noisePink noise
Pink noisePink noise
Pink noise. A random noise used in
measurements, as it has the
same amount of energy in each
octave.
PolarityPolarity
PolarityPolarity
Polarity. The condition of being
positive or negative with respect
to some reference point or object.
RMSRMS
RMSRMS
RMS. Abbreviation for root mean
square. The effective value of a
given waveform is its RMS value.
Acoustic power is proportional to
the square of the RMS sound
pressure.
ResistanceResistance
ResistanceResistance
Resistance. That property of a
conductor by which it opposes the
flow of electric current, resulting in
the generation of heat in the
conducting material, usually
expressed in ohms.
ResistorResistor
ResistorResistor
Resistor. A device used in a circuit
primarily to provide resistance.
ResonanceResonance
ResonanceResonance
Resonance. The effect produced
when the natural vibration
frequency of a body is greatly
amplified by reinforcing vibrations
at the same or nearly the same
frequency from another body.
SensitivitySensitivity
SensitivitySensitivity
Sensitivity. Volume of sound
delivered for a given electrical
input.
StatorStator
StatorStator
Stator. The fixed part forming the
reference for the moving dia-
phragm in a planar speaker.
THDTHD
THDTHD
THD. Abbreviation for total harmonic
distortion. (See Distortion.)
TIMTIM
TIMTIM
TIM. Abbreviation for transient
intermodulation distortion. (See
Distortion.)
TransducerTransducer
TransducerTransducer
Transducer. Any of various devices
that transmit energy from one
system to another, sometimes
one that converts the energy in
form. Loudspeaker transducers
convert electrical energy into
mechanical motion.
TransientTransient
TransientTransient
Transient. Applies to that which lasts
or stays but a short time. A
change from one steady-state
condition to another.
TweeterTweeter
TweeterTweeter
Tweeter. A small drive unit designed
to produce only high frequencies.
WavelengthWavelength
WavelengthWavelength
Wavelength. The distance mea-
sured in the direction of progres-
sion of a wave, from any given
point characterized by the same
phase.
White noiseWhite noise
White noiseWhite noise
White noise. A random noise used
in measurements, as it has the
same amount of energy at each
frequency.
WooferWoofer
WooferWoofer
Woofer. A drive unit operating in the
bass frequencies only. Drive units
in two-way systems are not true
woofers but are more accurately
described as being mid/bass
drivers.