Revel Voice 2 User Manual

Revel

Voice 2 Loudspeaker

™

Ultima

Owner’s Manual

®

Harman Specialty Group
3 Oak Park Drive
Bedford, MA 01730-1413 USA
Tel [phone]
Fax [phone]
www.revelspeakers.com

Customer Service
Telephone: [phone]
Sales Fax: [phone]
Service Fax: [phone]
Product Shipments:
HSG/Revel
Returns Dept.
RMA #
801 S. 75th Avenue
Phoenix, AZ 85043

Part No. 354892-001| Rev 1 | 12/07

“Revel,” “Ultima” “Ultima Salon,” “Ultima Voice”,” Ultima Studio,” “Ultima Gem,”and the Revel logo are trademarks or registered trademarks
of Harman International Industries, Inc.

©2007 Harman International Industries, Inc. All rights reserved.

This document should not be construed as a commitment on the part of Harman Specialty Group. The information it contains is subject to
change without notice. Harman Specialty Group assumes no responsibility for errors that may appear within this document.

Introduction REVEL Ultima Voice2

DOCUMENTATION CONVENTIONS

This document contains general safety, installation and operation instructions for the REVEL Ultima Voice™ 2 loudspeaker. It is important to
read this user guide before attempting to use the product. Pay particular attention to safety instructions.

The following symbols are used in the document:

Appears on the component to indicate the
presence of uninsulated, dangerous voltage
inside the enclosu
sufficient to constitute a risk of shock.

Appears on the component to indicate
important operating and maintenance
instructions in the accompanying literature.

re – voltage that may be

WARNING

CAUTION!

Note:

2

Calls attention to a procedure, practice,
condition or the like that, if not correctly
performed or adhered to, could result in injury
or death.

Calls attention to a procedure, practice,
condition or the like that, if not correctly
performed or adhered to, could result in
damage or destruction to part or all of the
product.

Calls attention to information that is essential to
highlight.

Table of Contents

ABOUT REVEL . . . . . . . . . . . . . . . . . . . . . . . 5

About Revel Ultima2 Loudspeakers . . . . . . . . . . . . . . . 5

About The Revel Ultima Voice2 Loudspeakers . . . . . . 6

Product Registration. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

What’s in the Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . 7

LOUDSPEAKER OVERVIEW. . . . . . . . . . . . . 8

Driver Complement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Cabinet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Filter Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Rear Panel Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 10

INSTALLATION CONSIDERATIONS . . . . . 12

Loudspeaker Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . 12

Loudspeaker Placement. . . . . . . . . . . . . . . . . . . . . . . . 12

Setting the Low Frequency Compensation Switch . . . 12

Flush Mounted. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

On top of monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Stand mounted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Listening Room Acoustics. . . . . . . . . . . . . . . . . . . . . . 14

Acoustic Treatment Materials . . . . . . . . . . . . . . . . . . . 15

Voice2 Cradle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Voice2 Combination Spikes/Glides. . . . . . . . . . . . . . . 16

MAKING CONNECTIONS . . . . . . . . . . . . . 17

Single Wired Connections. . . . . . . . . . . . . . . . . . . . . . 19

Bi-Wired Connections. . . . . . . . . . . . . . . . . . . . . . . . . 20

Vertical Bi-Amplified . . . . . . . . . . . . . . . . . . . . . . . . . 21

Horizontal Bi-Amplified Connections. . . . . . . . . . . . . 22

OPTIMIZING PERFORMANCE . . . . . . . . . . 23

Loudspeaker Volume Level. . . . . . . . . . . . . . . . . . . . . 24

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . 25

Voice2 Dimensions & Weight. . . . . . . . . . . . . . . . . . . 26

OBTAINING SERVICE . . . . . . . . . . . . . . . . 27

Product Shipment Directions: . . . . . . . . . . . . . . . . . . . 27

Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Pedestal Unpacking and Installation Instructions . . . . . 2

Ultima Voice2
Owner’s Manual

3

4

Ultima Voice2

Owner’s Manual

Congratulations and Thank You for purchasing your new Revel
Ultima Voice™ 2 Loudspeaker. Please take the time to read the
following installation and setup information in order to optimize
your enjoyment of your new loudspeakers.

contributor to the standard-setting acoustic performance of the
Ultima2 Series Loudspeakers. The attractive rounded shape of the
Ultima2 Series cabinet contributes to their superb off-axis
response while their single-piece, nine-layer construction results
in an extremely inert enclosure.

ABOUT REVEL

Since 1996, Revel has stood at the forefront of loudspeaker design
and performance. Backed by Harman International’s world
leading research and design facilities, Revel loudspeakers benefit
from cutting-edge resources such as:

•Multiple large anechoic chambers which allow for

precise testing and measurements.

•A multi-channel listening lab for double-blind, position

independent listening tests.

•A laser interferometer that enables detailed driver and

cabinet analysis.

• Finite element analysis, utilized for advanced

loudspeaker modeling.

•A stereo lithography apparatus, which rapidly “builds”

tooled parts.

ABOUT REVEL ULTIMA2 LOUDSPEAKERS

The Revel “Ultima2” Series Loudspeakers exemplify subtle
elegance with their smooth, rounded shapes, easily blending into
a wide variety of decors. Available in either a high-gloss
mahogany veneer or high-gloss black finish, the Revel Ultima2
Loudspeakers will be a welcome compliment to any fine home.
The elegant shape extends to their magnetically attached grilles,
which eliminates the need for any unsightly attachment
hardware. The acoustically optimized baffles offer eye-pleasing
shapes when the loudspeakers are used without their grilles. In
fact, the complex computer designed baffles drastically reduce
diffraction. Such unparalleled freedom from diffraction is a major

New transducers were designed from “the ground up” specifically
for the Ultima2 Series. Featuring dual neodymium magnetic
motor systems with sophisticated distortion reduction
mechanisms, titanium diaphragms, and oversized voice coils, the
Ultima2 Series woofers and mid-ranges represent the cutting edge
in transducer design. The new 1-inch tweeter, common to all four
Ultima2 Series loudspeakers, sets the standard for breathtaking
transparency and low coloration with its pure beryllium dome
and third-generation waveguide.

Using advanced CAD modeling and testing resources, Revel has
achieved demonstrably superior sound quality. Our unique
double-blind listening test facilities prove their superiority over all
competitors and Revel’s development process goes well beyond
proving superior performance. An exclusive “tuning” process is
used in producing each and every Ultima2 series loudspeaker,
matching its performance to the original reference prototype to
within a fraction of a decibel. Music and cinema sound lovers can
rest assured that their Ultima2 series loudspeakers sound as great
as the laboratory reference.

Ultima Voice2
Owner’s Manual

5

ABOUT THE REVEL ULTIMA VOICE2 LOUDSPEAKERS

Incorporating all the latest advancements of the new Ultima2
series, the Voice2 is more than simply the finest center channel
available. While an ideal match for other Ultima2 series
loudspeakers as a center channel, the Voice2 is also well suited as
the Left, Center, and Right front loudspeakers in applications
where its orientation and dimensions are more suitable (such as
above or below a screen). The Voice2 accurately matches the
timbre of the Salon2, Studio2 and Gem2, even when used in a
variety of applications. Rear panel controls are provided to
compensate for variable acoustic conditions. Whether placed on
the matching pedestal, or built into cabinetry,the Voice2 can be
fine-tuned to ensure optimal performance.

The Voice2 utilizes two 8-inch woofers together with a 5 1/4-inch
mid-range - all with huge 2-inch flat-wire voice coils - to
reproduce an extraordinarily wide dynamic range with freedom
from compression. The result is consistent sound quality,
regardless of output level. Together with the new 1-inch Ultima2
series tweeter and computer-optimized high-order filter networks,
the Revel Ultima Voice2 truly provides a new reference for center
channel sound quality.

WHAT’S IN THE BOX

• (1) Voice2 Loudspeaker with Adjustable Tilt Cradle

• (4) 2.25-inch (57mm) Combination Spikes with Glides

• (4) Locking Rings

• (4) Felt Washers

• (1) Voice2 Owners Manual

PRODUCT REGISTRATION

Please register the Voice2 within 15 days of purchase. To do so,
register online at the www.revelspeakers.com website or call
Harman Specialty Group Customer Service. Retain the
original, dated sales receipt as proof of warranty coverage.

6

Ultima Voice2

Owner’s Manual

UNPACKING

The Voice2 requires special care and handling during unpacking.
Pay particular attention to the precautions that appear in this
section and throughout this owner’s manual.

Warning

Do not attempt to lift or move the Voice2 alone. Proper
lifting requires at least two strong people. When lifting
the Voice2 keep your back as straight as possible using
the leg muscles to lift. Failure to follow these procedures
may result in personal injuries and/or loudspeaker dam­age.

To unpack the Voice2:

6. Remove the plastic tweeter protector by gently pulling it away
from the tweeter faceplate.

7. Save all packing materials for possible future shipping needs.

(Optional) If you plan to install the combination spikes/glides,
lay the speaker down so the bottom is facing upward (the feet
which have holes for the spikes will be exposed). Remove the
spikes from the end pad and attach them to the bottom of the
loudspeaker. Refer to the combinat ion spikes/glides” section for
detailed installation instructions.

Figure 1: Unpacking Instructions

1. Place the packing carton upside down to expose the side indi­cating “open this side,” and fully open the top flaps.

2. Without allowing the top flaps to close, place the packing car­ton into an inverted position onto a soft towel or carpeted
floor. Lift the packing carton off of the loudspeaker, leaving
the packing material in place as shown in Step 1,Figure 1.
Use caution to avoid damaging the loudspeaker cabinet and
objects located within the packing carton.

3. Leaving the protective end pads on, lift one end of the speaker
so that it is standing on end. Carefully remove the end pad
that is at the top and the center pad as shown in Step 2, Fig­ure 1.

4. Invert the speaker by carefully placing it with the other end
up, using a soft towel to protect the finish. Remove the end
packing material, exercising caution not to damage the
transducers.

5. Remove the protective cloth cover and carefully place the
speaker in its normal upright position, Step 3, in Figure 1.

Ultima Voice2
Owner’s Manual

1

2

2

3

3

7

LOUDSPEAKER OVERVIEW

1

1

Figure 2: VOICE2 Front (Pedestal Optional)

1

2

3

2

Figure 3: VOICE2 Cradle

3

DRIVER COMPLEMENT

The numbers in Figure 2 above correspond with the numbered
items below.

1. 1-inch (25mm) Beryllium dome tweeter

2. 5 1/4-inch (133mm) midrange

3. (2) 8-inch (203mm) woofers

8

CABINET

The Voice2 features a complex computer-designed baffle that
drastically reduces diffraction. The rounded shape of the Voice2
cabinet contributes to their superior off-axis response while their
single-piece, nine-layer construction results in an extraordinarily
inert enclosure. A unique “cradle” assembly allows the Voice2
Loudspeaker to be placed on a shelf or large rear projection video
monitor and tilted to optimize its performance.

Ultima Voice2

Owner’s Manual

The cabinet’s wood veneer finish does not require routine
maintenance. Cabinet surfaces that have been marked with dust,
fingerprints, or other dirt can be cleaned using a soft cloth and
high-quality wax.

• To clean the cabinet, apply furniture polish to a soft cloth
then use the cloth to lightly wipe the cabinet surface. Use care
to avoid coming into contact with the tweeter dome or other
drivers.

• To clean the grille, gently vacuum using a soft-bristled
brush vacuum attachment.

Caution

Use caution not to touch or allow any object or liquid to come
in contact with the Beryllium tweeter dome. Variations in its
finish are normal. Any attempt to clean the tweeter dome will
result in damage, which is not covered under the limited
warranty. To prevent cabinet damage, do not use a cloth made
with steel wool or metal polish to clean the cabinet. To prevent
possible transducer damage, do not apply furniture polish
directly to the cabinet or to the speakers.

FILTER NETWORK

The Voice2 networks (crossovers) optimize both the on and off­axis response, utilizing high-order filters at 235 Hz and 2 kHz.
These sophisticated networks help to ensure smooth octave-to­octave balance and timbral accuracy. Separate woofer, midrange
and tweeter filter boards prevent mutual interference between
filter network components, dramatically reducing distortion over
a wide dynamic range. Gold-plated binding posts and shorting
straps accommodate single-wired, bi-wired, and bi-amplified
connections. Low Frequency Compensation and Tweeter Level
switches on the rear panel provide the ability to compensate for
acoustic effects due to various applications and loudspeaker
placement, as well as less-than-ideal listening room acoustics.

Ultima Voice2
Owner’s Manual

9

REAR PANEL OVERVIEW

Controls are provided on the rear panel which allow the
optimization of the Voice2 Loudspeaker response for different
loudspeaker applications and placement. Refer to the
“Loudspeaker Placement” section for more information. The
definitions below refer to Figure 4: Rear Panel on the following
page.

1. Low Frequency Compensation Switch

• Select the Flush setting (as a starting point) if the Voice2

is placed in a bookcase or wall unit.

• Select the Stand - setting (as a starting point) if the

Voice2 is placed on top of a video monitor or placed on a
shelf.

• Select the Stand + setting (as a starting point) if the

Voice2 is placed on a stand such as the optional pedestal
stand

2. Tweeter Level (dB) Switch

The tweeter output level can be adjusted in calibrated steps by ­1, -0.5, 0, +0.5 or +1 dbB

4. Jumper Straps

Accommodates single-wired, bi-wired, and bi-amplified con­nections. Two gold-plated jumper straps are installed for
single-wired connections. The jumper straps must be
removed when the input terminals are used for bi-wired or
bi-amplified connections. Refer to the “Making Connections”
section for additional information.

Note

Refer to the “Optimizing Performance” section for more information
about the Low Frequency Compensation and Tweeter Level switches.

3. Input Terminals

Provides high and low-frequency connections from the
associated power amplifier(s). One pair of high-frequency
and one pair of low-frequency gold-plated binding posts are
available. The input terminals can be configured for single­wired, bi-wired, or bi-amplified connections. Refer to the
“Making Connections” section for additional information.

10

Ultima Voice2

Owner’s Manual

Figure 4 Rear Panel

1

Input Panel

3

4

3

2

3

4

3

1. Low Frequency Compensation Switch

2. Tweeter Level (dB) Switch

Ultima Voice2
Owner’s Manual

3. Input Terminals (- Negative/+ Positive)

4. Jumper Straps

11

INSTALLATION CONSIDERATIONS

Loudspeaker fidelity depends on the following three factors:

1. Loudspeaker accuracy

2. Loudspeaker placement

the Voice2. These magnetic fields decrease rapidly with
distance, so moving the Voice 2 farther away from the
monitor will reduce interference. It is important to confirm
that the Voice2 is suitable for use with the intended CRT
monitor.

.

3. Listening room acoustics

LOUDSPEAKER ACCURACY

The advanced Ultima2 design features allow the Voice2 to
achieve exceptional acoustical precision. Each Voice2 is
individually hand-tuned during manufacturing to match the
production reference standard within a fraction of a decibel,
ensuring incomparable loudspeaker-to-loudspeaker consistency.
As a result, experimenting with loudspeaker placement and
listening room acoustics have the most significant impact on the
performance of the Voice2 loudspeaker.

LOUDSPEAKER PLACEMENT

The bulleted items that begin below identify important
loudspeaker placement considerations for the Voice2.

• Remove all obstructions between the speakers and the

primary listening position. For instance, a coffee table
between the speakers and the primary listening position will
degrade imaging and timbre. Placing the speakers near large
objects may also cause unwanted reflections. The Low
Frequency Compensation switch can be used to optimize the
Voice2’s performance for the loudspeaker placement options
described in this section.

• For optimal imaging and timbre, point the speaker directly

toward the primary listening position.

• The Voice2 is magnetically shielded to minimize any effect

on CRT video monitors. However, small, stray magnetic fields
may affect large CRT monitors located in close proximity to

Note

DLP, LCD, LCoS and Plasma display devices are not affected by
magnetic fields.

Caution

Loudspeakers placed on stands or video monitors may fall if
tipped or improperly positioned. To avoid this, anchor the
loudspeaker and stand using the same procedures and
hardware used to anchor bookcases, wall units, and other
furniture. Harman Specialty Group assumes no responsibility
for proper selection and installation of hardware or for any
personal injuries or product damages resulting from improper
installation or a fallen loudspeaker.

SETTING THE LOW FREQUENCY COMPENSATION SWITCH

The Low Frequency Compensation switch provides compensation
for less-than-ideal room acoustics. It also adjusts for stray
acoustical effects. The following sections identify the suitable
conditions for each switch setting.

The Low Frequency Compensation Switch positions noted for
each type of installation should be used as a starting point.
Experimentation with varying the setting, either via
measurements or listening test will result in optimum
performance.

12

Ultima Voice2

Owner’s Manual

FLUSH MOUNTED

ON TOP OF MONITOR

Set the Low Frequency Compensation switch to Flush if the
Voice2 loudspeaker is placed in a bookcase or wall unit as shown
in Figure 5 (below).

Figure 5: Speaker Placement - Flush Mounted

Front

Left

Rear Projection Screen

Large Direct-View Monitor

or

Front
Right

Set the Low Frequency Compensation switch to Stand - if the
Voice2 Loudspeaker is placed on top of a video monitor as shown
in Figure 6 (below).

Note:

Reversible spikes/glides can be added to the bottom of the loudspeaker,
if desired. Refer to the “Combination Spike/Glides” for additional
information.

Figure 6: Speaker Placement - On Top

VOICE2
(Center)

Rear Projection Screen

Large Direct-View Monitor

or

Ultima Voice2
Owner’s Manual

VOICE2
(Center)

Front

Left

Front
Right

13

STAND MOUNTED

LISTENING ROOM ACOUSTICS

Set the Low Frequency Compensation switch to Stand + if the
Voice2 loudspeaker is placed on a pedestal as shown in Figure 7
(below). An optional pedestal stand is available from your local
authorized Revel dealer.

Figure 7: Speaker Placement - Stand Mounted

Front or Large Rear

Projection Screen

Optional

Pedestal Stand

Front

Left

VOICE2
(Center)

Front
Right

Listening rooms have a profound impact on sound, particularly
at lower frequencies. In fact, listening rooms can dominate the
sounds below about 400Hz. Ideally, listening rooms would have
optimized dimensions to minimize the effects of room
resonances. But in reality, most listening rooms are not designed
to enhance loudspeaker performance.

The interaction between loudspeakers and listening rooms is
complex, depending on two important determinants that affect
the loudspeaker and the listener.

1. Surfaces and other boundaries often cause large peaks and
dips in low-frequency response. These peaks and dips often
reach ranges of 12 dB or more.

2. Standing waves (also known as room modes or resonances)
interact with both the loudspeaker and the listener locations,
resulting in large frequency response errors.

Unfortunately, there is no simple solution that considers both
factors. Even computer software programs that examine one or
both factors may not calculate proper primary listening position
or loudspeaker placement values.

In most cases, proper selection of the primary listening position
combined with proper placement of the loudspeaker will result in
superior performance at lower frequencies. The difference
between superior and inferior results is often just a small
adjustment of the primary listening position or loudspeaker
placement. For more information or assistance contact an
authorized Revel dealer.

14

Ultima Voice2

Owner’s Manual

ACOUSTIC TREATMENT MATERIALS

b

VOICE2 CRADLE

The Voice2 features high-order filters at 235 Hz and 2 kHz that
optimize the loudspeaker on-axis and off-axis response,
minimizing degradations that occur in overly “live” rooms.
Placing minimal acoustic treatment materials at primary
reflection points will reduce these distortions even further. Ideally,
acoustic absorbers should be placed at the first reflection points
on the front and side walls and either acoustic absorbers or
diffusers should be placed at the first reflection point on the rear
wall.

Because the listener’s eyes and ears are on the same plane, the
“mirror method” is an accurate determinant of critical reflection
points. This method can be used to determine reflection points for
side walls, rear walls, front walls, and even the ceiling. Applying
acoustic treatment materials to the side walls is most important,
followed by the front wall, rear wall, and ceiling.

To determine reflection points using the mirror method:

1. Once the loudspeakers have been placed, sit in the primary
listening position and ask another person to slide a mirror
along the listening room walls.

2. Note the locations at which the person sitting in the primary
listening position can see either the left, center or right front
loudspeakers. Be sure to look for all of the speakers in the
reflection on each room boundary, including the front and
rear walls. These are reflection points that require acoustic
treatment materials.

The Voice2 Loudspeaker includes a “cradle” assembly that
provides solid footing, while providing adjustable tilt to optimize
the speaker position whether it is placed above or below a video
image. The included cradle assembly is suitable for use when the
speaker is to be placed on a shelf, on top of a large rear projection
video display, or in appropriate custom installations. To adjust
the Voice2 , loosen the adjustment knobs located underneath the
cradle. When the loudspeaker has been appropriately positioned,
firmly tighten the tilt adjustment knobs to lock the Voice2 in
place. Do NOT over-tighten

An optional pedestal is available for placement on the floor,
such as in front of projection applications. See Appendix A for
pedestal unpacking installation instructions.

Figure 8: Cradle

Tilt Down

Cradle Feet

Adjustment Kno

If acoustic treatment materials are not available, hanging a rug
over the reflection points will help reduce degradation in overly
“live” rooms. Carpeting the floor between the loudspeakers and
the primary listening position and placing irregular surfaces such
as bookcases at first reflection points will also help minimize
strong reflections. Avoid placing large reflective surfaces such as
coffee tables between the loudspeakers and the listeners for
critical listening.

Ultima Voice2
Owner’s Manual

Tilt Up

15

Voice2 Combination Spikes/Glides

When the Voice2 is shipped, reversible spikes/glides are located
in the left end pad. For optimal sound quality, they can be
positioned in the cast feet on the bottom of the cradle assembly.

The combination spike/glides allow for the achievement of a
proper tilt angle when the Voice2 is placed on top of a video
monitor, or on top of a shelf. For best results, the Voice 2 should
be tilted so that the front of the speaker is facing directly towards
the listener’s ears. The spikes/glides should be positioned so

that the smooth “glide” end is exposed to protect tile,
hardwood floors and furniture.

6. When all four spikes have been installed, stand the speaker
in the upright position. If needed, adjust the spikes to achieve
a level balance.

Figure 9: Combination Spike/Glide Components

Felt Washer

Locking Ring

Caution

When moving the Voice2, avoid dragging it across the floor or
cabinet. If the Voice2 is placed on a carpeted floor, the spikes
should be adjusted as shown on the left side of Figure 10 with
the sharp end protruding from the cabinet. If needed, follow
the instructions that begin below to adjust the spikes

To install and position the Combination spikes/glides:

1. Place the speaker on its side on a soft towel or carpeted floor.

2. Select the appropriate end of the spikes/glides depending on
your surface. If the speaker is to be used on a hardwood floor
or smooth surface use the glide end of the spike.

3. Locate the four feet and threaded inserts on the bottom of the
cradle feet.

4. Rotate the first spike counterclockwise, spike end first, to
attach it to the threaded insert.

5. Repeat step 4 with each of the other crade feet spikes and
threaded inserts. Make sure the spikes are evenly threaded to
achieve a level balance.

(Spike End Down)

Spike

Figure 10: Combination Spike/Glide Detail

Spike End Down Glide End Down

16

Ultima Voice2

Owner’s Manual

MAKING CONNECTIONS

Minimum Wire Gauge

The Voice2 features gold-plated binding posts and jumper straps
that allow it to be configured for single-wired, bi-wired, or bi­amplified connections

Caution

Never make or break connections unless all system
components are powered off.
Remove the input panel jumper-straps identified in Figure 3
before making bi-wired or bi-amplified connections. Failure to
do so may cause damage to some power amplifiers.

Before making connections, note the following:

• The standard connections method uses a single loudspeaker

cable. The Voice2 is equipped with two pairs of input
terminals to allow for bi-wiring or bi-amplification. While
Revel does not endorse one particular connection method
over another, these additional connection options are
available if desired. The design of this loudspeaker is such
that optimal performance can be attained using the standard
connection method.

• Make all connections observing the proper polarity, positive-

to-positive (+) and negative-to-negative (-). Connections that
do not observe the proper polarity will cause poor stereo
imaging and diminished bass response.

• Use high-quality loudspeaker cable with a maximum total

loop resistance of 0.07 Ohms or less (for each wire run). Refer
to the following table to determine the appropriate wire
gauge.

Gauge

(AWG)

68727

76921

85818

94313

10 34 10

11 27 8

12 22 7

13 17 5

14 14 4

15 11 3

16 9 3

17 7 2

18 5 2

Note

High loop resistances that exceed 0.07 Ohms (for each wire run) will
cause the filter network to be mis-terminated, resulting in
considerable degradation of sound quality.

Length

(Feet)

Length

(Meters)

Ultima Voice2
Owner’s Manual

17

• Vertical bi-amplified connections must be made with
identical power amplifiers. Horizontal bi-amplified
connections can be made with identical or non-identical
power amplifiers with identical gain factors.

• When making bi-amplified connections, both power
amplifiers must receive identical input signals from the
associated preamplifier. A “Y” adaptor is required if the
associated preamplifier does not offer two connectors per
output channel. Otherwise, each power amplifier can be
connected to a separate connector for the same output
channel of the preamplifier.

• If desired, contact an authorized Revel dealer for information
about the suitability of power amplifier components before
connecting the Voice2 to the associated power amplifier.

• Review the owner’s manuals for associated audio compo­nents to determine their connection procedures.

18

Ultima Voice2

Owner’s Manual

SINGLE WIRED CONNECTIONS

Figure 11: Single-Wired Connections

Single-wired connections are the most common. These are made
between one pair of the Voice2 input terminals and one power
amplifier output channel as shown in Figure 11.

To make single-wired connections:

1. Connect one pair of loudspeaker wires to the desired Voice2

input terminals. Then connect the same pair of loudspeaker
wires to the desired power amplifier output channel. Use the
high frequency input terminals..

2. Make sure that all terminals are firmly hand-tightened.

Input Panel

Voice2

POWER

AMPLIFIER

Ultima Voice2
Owner’s Manual

OUTPUT

19

BI-WIRED CONNECTIONS

Bi-wired connections are made between both pairs of the Voice2
input terminals and one power amplifier output channel as
shown in Figure 12.

To make bi-wired connections:

1. Remove the jumper straps identified in Figure 3.

2. Connect one pair of loudspeaker wires to the high-frequency
pair of Voice2 input terminals. Then connect the same pair
of loudspeaker wires to the desired power amplifier output
channel.

3. Connect another pair of loudspeaker wires to the low
frequency pair of Voice2 input terminals. Then connect the
pair of loudspeakers to the same power amplifier output
channel that was selected in Step 2.

4. Make sure that all terminals are firmly hand-tightened.

Figure 12: Bi-Wired Connections

Voice2

POWER

AMPLIFIER

20

OUTPUT

Ultima Voice2

Owner’s Manual

VERTICAL BI-AMPLIFIED

Vertical bi-amplified connections are made between both pairs of
Voice2 input terminals and two separate power amplifier output
channels. Each speaker is connected to its own power amplifier.
The power amplifiers must be identical. Vertical bi-amplified
connections are shown in Figure 13.

Note

When making vertical bi-amplified connections, both power
amplifiers must receive identical input signals from the associated
preamplifier. A “Y” adaptor is required if the associated preamplifier
does not offer two connectors per output channel. Otherwise, each
power amplifier can be connected to a separate connector for the
same output channel of the preamplifier.

To make vertical bi-amplified connections:

Figure 13: Vertical Bi-Amplified Connections

1. Remove the jumper straps identified in Figure 3.

2. Connect one pair of loudspeaker wires to the high frequency

pair of Voice2 input terminals. Then connect the same pair of
loudspeaker wires to the desired power amplifier output
channel.

3. Connect another pair of loudspeaker wires to the

low-frequency pair of Voice2 input terminals. Then connect
the same pair of loudspeaker wires to a separate output
channel on the same power amplifier.

4. Make sure that all terminals are firmly hand-tightened.

Note

Vertical bi-amplified connections must be made using two identical
power amplifiers.

Ultima Voice2
Owner’s Manual

Voice2

POWER

AMPLIFIER 1

OUTPUT 2

OUTPUT 1

21

HORIZONTAL BI-AMPLIFIED CONNECTIONS

Horizontal bi-amplified connections are made between both
pairs of Voice2 terminals and two separate output channels on
two separate power amplifiers. The high-frequency pair of Voice2
input terminals are connected to one power amplifier, while the
low-frequency pair are connected to another power amplifier.

These power amplifiers can be identical or non-identical, but
must have identical gain factors. If the gain factors are not
identical, a means of adjusting the input level of at least one
power amplifier is required. Horizontal bi-amplified connections
are shown in Figure 14.

Note

When making horizontal bi-amplified connections, both power
amplifiers must receive identical input signals from the associated
preamplifier. A “y” adaptor is required if the associated preamplifier
does not offer two connectors per output channel. Otherwise, each
power amplifier can be connected to a separate connector for the
same output channel of the preamplifier.

Horizontal bi-amplified connections can be made using identical or
non-identical power amplifiers. However, these power amplifiers
must have identical gain factors. If the gain factors are not
identical, a means of adjusting the input level of at least one power
amplifier is required. Contact an authorized Revel dealer for
assistance.

3. Connect another pair of loudspeaker wires to the low
frequency pair of Voice 2 input terminals. Then connect the
same pair of loudspeaker wires to the desired output channel
on another power amplifier.

4. Make sure that all terminals are firmly hand-tightened.

Figure 14: Horizontal Bi-Amplified Connections

Voice2

POWER

AMPLIFIER 1

POWER

AMPLIFIER 2

To make horizontal bi-amplified connections:

1. Remove the jumper straps identified in Figure 3.

2. Connect one pair of loudspeaker wires to the high-frequency
pair of Voice2 input terminals then connect the same pair of
loudspeaker wires to the desired power amplifier output
channel.

22

OUTPUT 1

OUTPUT 1

Ultima Voice2

Owner’s Manual

OPTIMIZING PERFORMANCE

To optimize the Voice2 for best performance:

1. When the Voice2 is connected, begin with the Tweeter Level

Switch set to 0. (Different listening rooms may require other
tweeter Level switch settings.)

2. Set the associated multi-channel controller or receiver for an

80 Hz crossover (or higher), even if the loudspeaker setup does
not include a subwoofer. In its absence, the associated
mult-channel controller or receiver will use bass management
to route frequencies below the crossover frequency to the front
left and right channels, without losing center-channel
low-frequency information.

• The Voice2 must be used with an electronic crossover set
to 80 Hz or higher.

• Selecting the appropriate crossover based on accurate
in-room response measurements will result in decreased
distortion, accurate timbre, and increased dynamic
capabilities.

• Contact an authorized Revel dealer for assistance in
setting the associated multi-channel controller or receiver
for the appropriate crossover.

3. Set the Low Frequency Compensation Switch to correspond
with the Voice2 placement. This is the best starting point, and
will typically result in the most neutral sound for a given
application. If the Voice2 sounds either too “thick” or too
“thin”, especially when reproducing male voices, experiment
with other Low Frequency Compensation Switch settings. In
any case, it is worth experimenting to find the best switch
setting for the particular installation. Note that the bass level
will increase as the Low Frequency Compensation switch is
turned clockwise.

• Select the Stand - setting, if the Voice 2 is placed on top of

a video monitor or mounted on a shelf (as a starting
point).

• Select the Stand + setting, if the Voice2 is placed on a

stand, (such as the optional pedestal stand) (as a starting
point.)

4. Begin playback of a familiar multi-channel music or film
source. Make sure to set the associated multi-channel
controller or receiver to a mode that uses the center channel.

• Listen to well-recorded dialogue from more than one film

source, as sound quality varies from different sources.

5. Listen from the primary listening position, increasing volume
to a comfortable level.

6. Experiment with the Voice2 placement to achieve the best
overall tonal balance and image precision. Refer to the
“Loudspeaker Placement” section for additional information
about loudspeaker placement.

7. If desired, experiment with the Low Frequency Compensation
switch and the Tweeter Level switch to optimize the system for
the room acoustics.

Note

Rotating the Low Frequency Compensation Switch clockwise
increases low-frequency output.

• Select the Flush setting, if the Voice2 is placed in a

bookcase or wall unit (as a starting point).

Ultima Voice2
Owner’s Manual

23

LOUDSPEAKER VOLUME LEVEL

High-order filters include steep cut-offs to reduce potential
damage from “out-of-band” frequencies. Combined with
carefully designed transducers and filter network, this approach
helps the Voice2 to maintain its performance under extreme
operating conditions.

However, all loudspeakers have limits when it comes to
continuous playback. To extend these limits, avoid playback at

volume levels that distort or sound “strained”.

Caution

To avoid damage, reduce volume level immediately if
loudspeaker sound is not clean and clear.

24

Ultima Voice2

Owner’s Manual

SPECIFICATIONS

Specifications Value Definition

Sensitivity 89.0 dB SPL with 2.83 V @ 1m (4 π

anechoic)

Impedance 6.0 Ω (nominal)

3.6 Ω (minimum @ 90 Hz)

Filter Network Three-way, high-order acoustic response

Frequency Range - 3 dB from 60 Hz to 45 KHz Describes the low frequency and high frequency at which the loudspeaker

In-Room Response Relative to

Target Response

@ 235Hz and 2 kHz

±0.5 dB from 65 Hz to 18 kHz Indicates sound quality in context with other specifications. A breakthrough

Indicates the amount of power the associated power amplifier must deliver to
drive the loudspeaker at reasonable volume levels. Conservatively-rated
specifications indicate high sensitivity, meaning that a massive power
amplifier is not required to drive Revel loudspeakers to reasonable 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 3.6 Ω allows a reasonably designed
power amplifier to drive Revel loudspeakers.

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.

system amplitude response is 3 dB lower than the average level, when mea­sured in a 4π anechoic chamber. While the -3 dB frequencies are the industry
standard for specifying frequency range, Low Frequency Extension is a more
useful specification for comparing the low-bass output capabilities of
loudspeakers.

measurement, this specification closely correlates to sound quality in a single
curve—a long-standing goal of loudspeaker engineers. In-room response is
measured through the use of large anechoic chambers. The loudspeaker’s
response is measured every 10 degrees, horizontally and vertically, for a total
of 72 response measurements. The in-room response curve is a prediction of
how the loudspeaker would measure in a typical room. Research and
observation reveals that ubiquitous on-axis response curves cannot
distinguish between two loudspeakers with radically different sound qualities.

Listening Window Response ±1.0 dB from 65 Hz to 20 kHz 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.

Ultima Voice2
Owner’s Manual

25

SPECIFICATIONS

Specifications Value Definition

Low-Frequency Extension -10 dB at 36 Hz

-6 dB at 49 Hz

-3 dB at 60 Hz

VOICE2 DIMENSIONS & WEIGHT

On-Cradle Height: 14.7 inches (373 mm)

On-Cradle Width: 25.5 inches (648 mm)

On-Stand Depth: 14.0 inches (356 mm)

Shipping Weight: 74.5 Pounds. (33.8 kg)

Note

Specifications are subject to change without notice.

Using optional pedestal:

On-Pedestal Height: 24.2 inches (614 mm)

On-Pedestal Width: 28.0 inches (711 mm)

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 –3 dB specification, the –10dB specification reflects the
steepness of low-frequency roll-offs.

25.5 inches (647mm)

14.2 inches (361mm)

15.63 inches (397mm)

14.07 inches (357mm)

On-Pedestal Depth: 16.8 inches (427 mm)

26

14.70 inches(373mm)

15.64 inches (397mm)

15.8 inches, (401mm)

Ultima Voice2

Owner’s Manual

OBTAINING SERVICE

Product Shipment Directions:

To obtain warranty or non-warranty service, contact an
authorized Revel dealer.

Before returning a loudspeaker for warranty or
non-warranty service, contact Harman Specialty Group
Customer Service to determine the extent of the problem
and to obtain a Return Material Authorization (RMA)
number. No loudspeakers will be accepted without an
(RMA) number issued from Harman Specialty Group.

If a Revel loudspeaker must be returned for repair, Harman
Specialty Group will assume no responsibility for the loudspeaker
during shipment from the customer to Harman Specialty Group,
whether the loudspeaker is or is not covered under warranty.

To contact Harman Specialty Group Customer Service:

Telephone: [phone]

Service Fax: [phone]

Sales Fax: [phone]

www.revelspeakers.com

All Returns must be:

• Well-packaged using the original packing materials

• Properly insured and consigned

• Pre-paid to a reliable shipping agent

The following information must be included when a
loudspeaker is returned for service:

•Name

• Company name

• Street address, city, state and, zip code

• Telephone number including area code and country code (if
applicable)

• Loudspeaker serial number

• A detailed description of the problem

• The preferred method of return shipment

• RMA number clearly marked on both the inside and outside
of the package

Do not return accessories such as owner’s manuals or spikes/
glides unless instructed to do so.

Product Shipments:

HSG/Revel
Returns Dept..
RMA #
801 S. 75th Avenue
Phoenix, AZ 85043

Ultima Voice2
Owner’s Manual

27

28

Ultima Voice2

Owner’s Manual

Appendix

PEDESTAL UNPACKING AND INSTALLATION INSTRUCTIONS

The Voice2 Pedestal is an optional accessory that provides optimum performance in stand-mounted applications. The following
instructions provide detailed information regarding how to unpack the Pedestal from its shipping container and how to install the Voice2
loudspeaker onto the pedestal.

UNPACKING THE PEDESTAL

Step 1: Place the packing carton upside-down
and fully open the bottom flaps.

Step 2: Without allowing the flaps to close,
invert the packing carton. Lift the packing
carton off of the pedestal, leaving the packing
material in place.

Step 3: To complete unpacking the pedestal,
remove the Unpacking & Installation
Instructions sheet from the end pad and refer to
the “Unpacking” instructions.

Step 4: Remove the Top End Pad from the top of the Voice2
pedestal.

Protective Bag

Accessory

Bag

Top E nd

Pad

Step 5: Lift the pedestal from the Bottom End Pad. Put both end
pads aside.

Step 6: Remove the cloth bag. Handle carefully to ensure that the
pedestal isn’t scuffed or bumped.

You are now ready to begin the Voice2 Pedestal installation
procedure. The Installation procedure begins on the following
page.

NOTE: Save all original packaging materials.

A-2

Voice2 Pedestal

Bottom End Pad

Ultima Voice2

Owner’s Manual

INSTALLING THE PEDESTAL

Step 1: Set the Voice2 Loudspeaker upside
down on a soft non-scratch surface.

Step 2: Remove the speaker from its cradle
by carefully removing the tilt adjustment
knobs and washers.

Note: Keep the knobs and washers together
as they’ll be re-used in Step 6.

Step 3: If the combination spikes/glides
were installed on the cradle, remove
the spikes, felt washers, and knurled
locking rings. If the combination
spikes/glides were not installed,
continue to Step 4.

Step 4: Remove the feet and screws
from the cradle. Put them aside.

Step 6: Use the four Phillips head
screws located in the Pedestal
accessories bag to install the cradle
to the top of the Voice2 pedestal.
Tighten the screws firmly but do
NOT over-tighten.

Step 7: Install the Voice2 loudspeaker onto the cradle/pedestal
assembly. Insert each threaded tilt adjustment knob first through
a metal washer and then through a felt washer before inserting it
into one of the threaded inserts toward the rear of
the Voice2 loudspeaker.

Step 5: Install the combination
spikes/glides with the felt washers
and knurled locking rings to the
bottom of the Voice2 pedestal.
Hand-tighten the spikes firmly, but
do NOT over-tighten.

Note: If the combination spikes/glides
were not previously installed on the
cradle, the hardware will be with the
Voice2 loudspeaker hardware
accessories.

Note: Refer to page 16 for further instructions on how to install the
combination spikes/glides to the bottom of the pedestal.

Ultima Voice2
Owner’s Manual

Front & rear tilt
adjustment threaded inserts

Felt washer

Metal washer

Lockdown knob

Step 8: Slide the Voice2 loudspeaker in the cradle
to adjust the tilt. When the loudspeaker has been
appropriately positioned, firmly hand-tighten
the tilt adjustment knobs to lock the loudspeaker
in place. Do NOT over-tighten.

A-3

A-4

Ultima Voice2

Owner’s Manual

LIMITED WARRANTY

A valid serial number is required for warran­ty coverage. This Revel warranty protects the
original retail purchaser for a period of five
(5) years (parts and labor) from any failure as
a result of original manufacturing defects so
long as:

1. The Revel products were purchased
within the 50 United States, its
territories, or Canada

2. The dealer from whom the Revel
products were purchased was authorized
to sell such products at the time of the
original purchase.

3. The original, dated Bill of Sale is pre­sented whenever service is required
during the warranty period.

The balance of this warranty is transferable
only if the used product is purchased from an
authorized Revel dealer. This warranty is
only valid for service within the United
States, its territories, and Canada, please
contact an authorized Revel dealer for
warranty and service information.

Any Revel product not performing
satisfactorily may be returned to the factory

for evaluation. Return authorization must
first be obtained by either calling or writing
Customer Service prior to shipping the
product. The customer is responsible for
shipping charges to the factory. Customer
Service will pay return shipping charges
within the United States only in the event
that the product is found to be defective as
mentioned above. There are other
stipulations that may apply to shipping
charges.

There is no other express warranty on this
product. Neither this warranty nor any other
warranty, express or implied, including
implied warranties of merchantability and
fitness, shall extend beyond the warranty
period. No responsibility is assumed for any
incidental or consequential damages, so that
the above exclusion or limitation may not
apply.

This warranty provides specific legal rights.
Other states may provide additional rights.
This warranty is applicable in the United
States, its territories, and Canada. Outside of
the United States, its territories, and Canada,

please contact an authorized Revel dealer for
warranty and service information.
The information this document contains is
subject to change without notice. In the event
that there are differences between this
warranty and the provisions of any
advertisements, documentation, product
brochures, or packaging cartons, the terms of
this warranty will prevail.

Harman Specialty Group
3 Oak Park Drive

Bedford, MA 01730-1413
USA

Tel [phone]
Fax [phone]

www.revelspeakers.com

Customer Service
Tel [phone]
Fax [phone] (Sales)
Fax [phone] (Service)

Harman Specialty Group, 3 Oak Park Drive, Bedford, MA, 01730-1413 USA | Telephone: [phone] | Fax: [phone]

Customer Service Telephone: [phone] | Sales Fax: [phone] | Service Fax: [phone]

Product Shipments: HSG/Revel, Returns Dept., 801 S. 75th Avenue, Phoenix, AZ 85043 USA

| www.revelspeakers.com

Part No.354892-001 | Rev 1 | 12/07