Revel f50 Guia Do Utilizador
Specification
Value
Definition
20
Sensitivity
Impedance
88dB SPL
with 2.83Vrms @ 1m
(4 pi anechoic)
with 2.83Vrms @ 1m
(4 pi anechoic)
5
Ω (nominal)
3.2
Ω (minimum @ 64Hz)
Indicates the amount of power the associated power ampli-
fier must deliver to drive the loudspeaker at reasonable
volume levels. Conservatively-rated specifications indicate
moderate sensitivity, meaning that a massive power ampli-
fier is not required to drive Revel loudspeakers to reason-
able volume levels in large listening spaces.
fier must deliver to drive the loudspeaker at reasonable
volume levels. Conservatively-rated specifications indicate
moderate sensitivity, meaning that a massive power ampli-
fier is not required to drive Revel loudspeakers to reason-
able volume levels in large listening spaces.
Indicates whether the loudspeaker presents a “difficult” or
“easy” load on the associated power amplifier. Combined
with moderate phase angles, a minimal impedance
specification of 3.7
“easy” load on the associated power amplifier. Combined
with moderate phase angles, a minimal impedance
specification of 3.7
Ω allows a reasonably designed power
amplifier to drive Revel loudspeakers.
In-Room Response
±1.0dB
from 33Hz to 18kHz
from 33Hz to 18kHz
Indicates sound quality in context with other specifications.
An advanced measurement, this specification closely corre-
lates to sound quality in a single curve – a long-standing goal
of loudspeaker engineers. Research and observation reveals
that “on-axis” response curves cannot distinguish between
two loudspeakers with radically different sound qualities.
An advanced measurement, this specification closely corre-
lates to sound quality in a single curve – a long-standing goal
of loudspeaker engineers. Research and observation reveals
that “on-axis” response curves cannot distinguish between
two loudspeakers with radically different sound qualities.
Target Response
±0.75dB
from 31Hz to 20kHz
from 31Hz to 20kHz
Indicates sound quality in context with the individual
loudspeaker’s application, considering the acoustical impact
of its placement. An ideal response goal, a target response
is not flat at either end of the audible spectrum and is used
when the ideal reference is not a flat line.
loudspeaker’s application, considering the acoustical impact
of its placement. An ideal response goal, a target response
is not flat at either end of the audible spectrum and is used
when the ideal reference is not a flat line.
First Reflections
Response
Response
±1.0dB
from 33Hz to 18kHz
from 33Hz to 18kHz
Indicates the response listeners hear in relation to the first
reflections from walls, ceilings, and floors. This specification
indicates that Revel loudspeakers will remain accurate,
even in listening rooms that cast strong reflections.
reflections from walls, ceilings, and floors. This specification
indicates that Revel loudspeakers will remain accurate,
even in listening rooms that cast strong reflections.
Listening Window
Response
Response
±1.0dB
from 33Hz to 19kHz
from 33Hz to 19kHz
Indicates the on-axis response of the loudspeaker. An
improved “on-axis” measurement, this specification
reduces the visual confusion of inaudible interference. It
retains full accuracy without using “spectral smoothing,”
which results in significant data loss.
improved “on-axis” measurement, this specification
reduces the visual confusion of inaudible interference. It
retains full accuracy without using “spectral smoothing,”
which results in significant data loss.
Low-Frequency
Extension
Extension
Specifications are subject to change without notice.
-10dB @ 23Hz
- 6dB @ 27Hz
- 3dB @ 32Hz
- 6dB @ 27Hz
- 3dB @ 32Hz
Indicates the low-frequency response of the loudspeaker.
Studies have shown that the –10dB specification best
correlates to controlled listening tests. At low frequencies,
most loudspeaker and listening room combinations
demonstrate significant “room gain,” which produces an
increase in levels as frequencies decrease. Unlike the –3dB
specification, the –10dB specification reflects the steepness
of low-frequency roll-offs.
Studies have shown that the –10dB specification best
correlates to controlled listening tests. At low frequencies,
most loudspeaker and listening room combinations
demonstrate significant “room gain,” which produces an
increase in levels as frequencies decrease. Unlike the –3dB
specification, the –10dB specification reflects the steepness
of low-frequency roll-offs.
Filter Network
Three-way, high-order @
225Hz and 2.3kHz
225Hz and 2.3kHz
Indicates the acoustical characteristics of the filter network.
Steep filters indicate an optimized filter network that
produces minimal acoustical interference, low distortion,
and expansive dynamic range. Revel’s filter networks
feature carefully selected components. Woofer, midrange,
and tweeter filter boards are independent of one another.
Each includes provisions for single-wired, bi-wired, and bi-
amplified connections as well as flexible controls for user
adjustments.
Steep filters indicate an optimized filter network that
produces minimal acoustical interference, low distortion,
and expansive dynamic range. Revel’s filter networks
feature carefully selected components. Woofer, midrange,
and tweeter filter boards are independent of one another.
Each includes provisions for single-wired, bi-wired, and bi-
amplified connections as well as flexible controls for user
adjustments.
SPECIFICATIONS
REVEL PERFORMA F50a
Owner’s Manual