Revel Voice - Manual (Page 16)

SPECIFICATIONS
Revel utilizes proprietary measurement methods in the design and
specification of our loudspeakers. Our research has developed a
series of tests that represent a great leap forward in making mea-
surements that dramatically contribute to our goal of accurately
reproducing music or film.
Sensitivity: 87 dB SPL, with 2.83 Vrms @ 1 m
(4 pi anechoic)
Sensitivity provides an indication of how much amplifier power is
required for the loudspeaker to play at satisfactory volume levels.
This conservatively-rated specification indicates moderate sensitivity
and denotes that the VOICE does not require huge amplifiers to
achieve realistic levels in all but the largest rooms.
Impedance: 6 ohms (nominal), 4 ohms (minimum) @
-12° phase angle;
Maximum phase angle = 28° @ 892 Hz
Minimum phase angle = -35° @ 3 kHz
Impedance indicates whether the speaker system presents a “hard”
or “easy” load on the amplifier. A minimum impedance value of
4 ohms, together with moderate phase angles, signifies that any
competently-designed amplifier can easily drive the VOICE.
Filters (Crossover): 3-way, 24 dB per octave, (4th-order) acoustic
response at 300 Hz and 2.2 kHz
The steep filter slopes ensure good acoustical behavior in the
crossover regions, with a minimum of acoustical interference, along
with low distortion and wide dynamic range. The filters feature
point-to-point hand wiring with specially selected components.
Woofer and tweeter filter boards are physically independent and
include a provision for bi amping or bi-wiring.
Frequency Responses: In-Room Response;
+1.0 dB from 110 Hz to 8 kHz
In-room response is a breakthrough measurement that, in a single
curve, closely correlates to sound quality and has been a goal of
loudspeaker engineers for years. Research, and simple observation,
reveals that ubiquitous “on-axis” response curves often cannot distin-
guish between two loudspeakers with radically different sound quali-
ty. This VOICE specification is even more powerful when it is taken
in context with the other measurements presented here.
In-Room Response Relative to Target Response;
+0.75 dB from 70 Hz to 20 kHz
A target response is the ideal response goal and is not flat at the fre-
quency extremes and is used when the ideal reference is not a “flat”
line. A target response must be tailored to the loudspeaker’s intended
application and takes into account the acoustic impact of the loud-
speaker’s location, such as freestanding, or placement near a wall.
First-Reflections Response;
+1.0 dB from 110 Hz to 6.5 kHz
First reflection response is a measure of the response a listener hears
that is contributed by the first reflections from the walls, floor, and
ceiling. This superb specification indicates that VOICE will remain
accurate, even in the presence of strong reflections.
VOICE Speaker
Owner’s Manual
16