REVELL Ultima Gem Manuel utilisateur

Revel®Ultima™Gem Loudspeakers

TABLE OF CONTENTS

INTRODUCTION...............................................3

ABOUT THE MANUAL AND WARRANTY.................................3

DESCRIPTION .................................................4

WOOFERS ........................................................................4

TWEETERS........................................................................5

CROSSOVER NETWORK .....................................................5

CABINET...........................................................................5

UNPACKING....................................................6

INSTALLING STANDS (OPTIONAL) .....................7

PLACEMENT ...................................................9

ROOM ACOUSTICS...........................................................11

ROOM TREATMENT..........................................................12

CONNECTIONS..............................................13

SINGLE-WIRED SYSTEM CONNECTIONS ............................13

BI-WIRED SYSTEM CONNECTIONS ....................................14

BI-AMPLIFIED SYSTEM CONNECTIONS...............................15

SYSTEM OPTIMIZATION..................................17

CABINET CARE..............................................18

LOUDSPEAKERS AND POWER........................18

OBTAINING SERVICE......................................19

SPECIFICATIONS............................................20

REVEL ULTIMA GEM

Owner’s Manual

Figure 1. The REVEL

ULTIMA GEM loudspeaker.

INTRODUCTION

With its striking and sophisticated appearance, the REVEL®ULTIMA™

GEM loudspeaker hints at its advanced design from the first glance.

The simple and clean lines characterize an exceptional sound repro-

duction system defined by its custom-designed drivers, individually

optimized crossover network, and a highly-functional enclosure.

We created these loudspeakers to achieve superior performance in

the widest possible range of environments. Physically small enough

to be used in modest rooms, they are dynamic enough to be used in

very large rooms. They are equally at home in discriminating two-

channel systems, as well as multi-channel and home theater systems.

Moreover, we’ve taken the care to make them as adaptable as possible

to a variety of room positions and the acoustical interactions typically

found in homes.

ABOUT THE MANUAL AND WARRANTY

To begin enjoying your new loudspeakers, first read and then perform

the instructions in this owner’s manual. Maximum performance

depends on following all instructions described here, as well as those

found in the owner’s manuals of associated components in your audio

system. Save these instructions for future reference.

REVEL ULTIMA GEM loudspeakers are covered by a limited 5-year

warranty, so save the bill of sale to protect your purchase and aid in

any service-related questions.

REVEL ULTIMA GEM

Owner’s Manual

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Figure 2. The REVEL

ULTIMA GEM transducer and

connection locations.

DESCRIPTION

The REVEL ULTIMA GEM loudspeaker features a unique trans-

ducer configuration (see Figure 2) to create an acoustic center that

is halfway between the two woofers and coincident with the front

tweeter’s acoustic center. A second tweeter (on rear of cabinet),

operating above 8 kHz, provides additional high-frequency energy

to enhance overall “room response.”

Combined with an individually-optimized crossover network, this

transducer arrangement provides a uniform vertical “listening win-

dow” or area in which the sound varies little. Also, the small

woofer size and compact baffle width help to create an extremely

wide horizontal window in which optimum sound can be heard.

WOOFERS

To ensure uncompressed dynamic range, each loudspeaker contains

a pair of 5-inch woofers that are unique in the following ways:

• The woofer’s radiating surface is made of titanium for true pis-

tonic behavior to over 4 kHz, well beyond its function in the

GEM system.

• Optimized magnetic circuits to minimize harmonic distortion.

• The woofer’s motor system utilizes neodymium magnets with a

stray-flux containment system for shielding near video monitors.

• Oversized 2-inch diameter voice coils with flat aluminum wire

offer higher power handling than average-sized coils for greater

accuracy at high volume levels and during extended crescendos.

• The cast magnesium frame provides optimum voice coil cooling

and minimum reflections, while offering excellent rigidity.

REVEL ULTIMA GEM

Owner’s Manual

HighFrequency

Input

HighFrequency Level

(dB)

-1

Front

0+.5

-.5

-2

Rear

0+4

0ff

LowFrequency

Input

SerialNo.

Install

Straps

for

Single-wired

Operation.

Install

Strapsfor

Single-wired

Operation.

Note:

Remove

Strapsfor

Bi-wiredor

Bi-amplified

Operation.

Front

Tweeter

Port

High-Frequency

Level Controls

Connectors (with

shorting straps)

Rear

Woofer

Tweeter

Woofer

Northridge

California

Madein U.S.A.

TWEETERS

Each loudspeaker also contains two high-performance tweeters

with the following features:

• Optimized tweeter-dome profiles for maximum dispersion,

while eliminating coloration caused by “break-up modes.”

• Linear reproduction with very-low harmonic distortion even at

high output levels for uncompressed sound purity.

• The front tweeter utilizes a large voice-coil with an oversized

surround roll. This provides for the higher power handling and

longer excursion capability required to reproduce greater

uncompressed dynamics.

CROSSOVER NETWORK

Built into each loudspeaker is an individually-optimized crossover

network with the following features:

• A 2-way, 24 dB per octave crossover at 2.7 kHz shapes the on-

and off-axis response of each driver and the complete system.

• Hand-wired filter networks with air-core inductors and

film capacitors are calibrated to match each loudspeaker to

the reference standard.

• Provision for bi-amplified and bi-wired applications via remov-

able external shorting straps on the gold-plated binding posts.

• External level controls for both the front and rear tweeters via

calibrated switched precision resistors, thus maintaining identi-

cal response from both speakers for ideal imaging.

CABINET

The cabinet offers groundbreaking appearance and aids in overall

system performance. The inner enclosure is designed as an acousti-

cally-inert platform for sound-wave generation. Integral side panels

provide a custom look via available finishes and are internally

damped by sandwiched viscoelastic energy-absorbing layers to

reduce any sound transmission effects.

REVEL ULTIMA GEM

Owner’s Manual

Figure 3. A REVEL

ULTIMA GEM loudspeaker

with its inner packing materials.

UNPACKING

To avoid injury, please use care during unpacking. Always

stand as straight as possible and use your leg muscles to lift a

REVEL ULTIMA GEM loudspeaker. Do not lift it while bend-

ing from the waist.

To unpack a REVEL ULTIMA GEM loudspeaker, perform the

following steps:

1. Place a REVEL ULTIMA GEM loudspeaker onto its side.

2. Open the bottom flaps. Stand the carton in the up position.

3. Lift the carton off the loudspeaker and set it aside, being careful

not to damage the contents (see Figure 3).

4. Remove the allen wrench and set it aside.

5. Remove the left and right pads and the protective cloth. Use

caution to avoid scraping the finish or pulling off the grille.

After unpacking the unit, carefully inspect it for possible damage

due to shipping. If you discover any damage, immediately contact

your Revel dealer for further assistance. When moving a REVEL

ULTIMA GEM loudspeaker (e.g., when experimenting with place-

ment), avoid touching the transducers.

Keep all packing materials for future shipping. In the unlikely

event a product will need repair, Revel will only accept a unit in its

original shipping carton. Using any other packing materials may

result in damage to the product and is not covered by the warranty.

See Obtaining Service on page 19 for additional details.

REVEL ULTIMA GEM

Owner’s Manual

Allen Wrench

Left Pad

Right Pad

Warranty Card and

Owner’s Manual

WARNING

Figure 4. Installing the base

onto the pedestal.

Figure 5. Installing spikes.

INSTALLING STANDS (OPTIONAL)

1. Unpack all stand boxes. Place a pedestal, base, and top plate on

a soft surface (e.g, rug or soft cloth).

2. Using a Phillips screwdriver, install a base to a pedestal with five

long screws, as shown in Figure 4.

3. Thread four spikes about halfway into the base and tighten each

one with a locking ring, as shown in Figure 5.

continued on next page...

REVEL ULTIMA GEM

Owner’s Manual

Pedestal

Base

(5) Long Screws

(Start All Screws

Before Tightening)

(4) Spikes

(4) Covers*

(optional for hardwood

or tile floors)

(Optional) Use Covers*

For Hard Floors

(4) Locking

Rings

*NOTE: Apply a small bead of supplied

silicone adhesive into each cover and

fasten onto each spike. Wait 20 minutes

for silicone to set.

Figure 6. Installing the top plate.

Figure 7. Fastening the REVEL

ULTIMA GEM loudspeaker to

the assembled stand.

INSTALLING STANDS (CONT’D)

4. Place the stand in its upright position and install the top plate

with five short screws, as shown in Figure 6.

5. Fasten a loudspeaker to the stand with three short screws, as

shown in Figure 7. Read the Placement section before making

final placement and spike adjustments. Repeat steps 1 through 5

for the other stand.

REVEL ULTIMA GEM

Owner’s Manual

(5) Short Screws

(Start All Screws

Before Tightening)

Top Plate

REVEL ULTIMA GEM

(3) Short Screws

(Start All Screws

Before Tightening)

Figure 8. A REVEL ULTIMA

GEM loudspeaker is placed

on an optional stand for an

ideal match between tweeter

and ear heights.

Figure 9. Typical placement of

REVEL ULTIMA GEM

loudspeakers for stereo.

NOTE: The suggested room

treatments coincide with the

primary reflection points.

PLACEMENT

Sound quality is heavily dependent on the accuracy of your loudspeak-

ers, their placement in the listening room, and the acoustics of the

room itself. Since the REVEL ULTIMA GEM loudspeakers are

extremely accurate, experimenting with their placement is the most

significant way to optimize their performance in a given environment.

The following guidelines will help you obtain the best results:

• In most situations, we recommend placing the REVEL

ULTIMA GEM loudspeakers on their (optional) matching

stands, as shown in Figure 8.

NOTE: When experimenting with placement, we recommend that

two people move a REVEL ULTIMA GEM loudspeaker (with its

attached stand) by lifting under the stand’s top plate.

• For best stereo imaging, place the REVEL ULTIMA GEM

loudspeakers at equal distances from the main listening position

and in symmetry with the room, as shown in Figure 9.

continued on next page...

REVEL ULTIMA GEM

Owner’s Manual

Listening Position

(e.g., on couch)

Absorptive or

Diffusive

Material

Absorptive or Diffusive Material

Absorptive or

Diffusive

Material

Absorptive or

Diffusive

Material

R REVEL ULTIMA GEM

L REVEL ULTIMA GEM

GEM Tweeter

PLACEMENT (CONTINUED)

• Optimum timbre and imaging precision is obtained with the

loudspeakers pointing almost directly toward the prime listen-

ing position. Some listeners prefer a wider “soundstage,” which

is achieved by reducing the toe-in angle, perhaps to the point of

aiming the loudspeakers straight ahead.

• Imaging and a sense of spaciousness will improve as the

loudspeakers are moved away from the wall behind the loud-

speakers and the side walls.

NOTE: You may then need to move the listening position back to

maintain the best stereo image.

• For more bass reinforcement, try moving the loudspeakers closer

to the front wall or corners (also see Room Acoustics on next page).

NOTE: You may then need to move the listening position forward

to maintain an acceptable stereo image.

• For best results, make sure there are no objects between the

REVEL ULTIMA GEM loudspeakers and the intended listening

area (e.g., a coffee table in front of the listener will degrade timbre

and imaging). If possible, avoid placing the loudspeakers near

large objects, which can cause unwanted reflections.

• Ideally, the listening room should be acoustically neutral, nei-

ther producing any distinct echoes nor sounding completely

“dead” and lifeless (also see Room Treatment on page 12).

REVEL ULTIMA GEM

Owner’s Manual

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