Revel Gem Bedienungsanleitung PDF herunterladen (Seite 20)

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: 87.0 dB SPL, with 2.83 V

rms

@ 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

REVEL ULTIMA GEM loudspeaker does not require huge amplifiers to

achieve realistic levels in all but the largest rooms.

Impedance: 6 ohms (nominal), 3 ohms (minimum)

@ 115 Hz

Impedance indicates whether the speaker system presents a “hard”

or “easy” load on the amplifier. A minimum impedance value of

3 ohms, together with moderate phase angles, signifies that any

competently-designed amplifier can easily drive the REVEL ULTIMA

GEM loudspeaker.

Filters (Crossover): 2-way, 24 dB @ 2.7 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

specially selected components. Woofer and tweeter filter boards are

physically independent.

Frequency Responses: In-Room Response;

±1.5 dB from 77 Hz to 18 kHz

In-room response is a breakthrough measurement that, in a single

curve, closely correlates to sound quality and has been a goal of loud-

speaker engineers for years. Research, and simple observation, reveals

that ubiquitous “on-axis” response curves often cannot distinguish

between two loudspeakers with radically different sound quality.

This REVEL ULTIMA GEM loudspeaker specification is even more

powerful when it is taken in context with the other measurements

presented here.

In-Room Response Relative to Target Response;

±1.0 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;

±1.5 dB from 77 Hz to 16 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 REVEL

ULTIMA GEM loudspeaker will remain accurate, even in the pres-

ence of strong reflections.

REVEL ULTIMA GEM

Owner’s Manual

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