Revel Concerta F12 Loudspeaker
Owner’s Manual
®™
2
3 Oak Park, Bedford, MA, 01730-1413 USA
Telephone: 781-280-0300
Fax: 781-280-0490
www.revelspeakers.com
Customer Service:
Telephone: 781-280-0300
Sales Fax: 781-280-0495
Service Fax: 781-280-0499
Product Shipments
16 Progress Road
Billerica, MA 01821-5730 USA
Part No. 353732-001 | Rev A | 11/04
REVEL Concerta F12
Owner’s Manual
Kapton is a registered trademark of the E.I. du Pont de
Nemours Company.
Ferrofluid is a registered trademark of Ferrofluidics, Inc.
“Revel,” “Concerta,” and the Revel logo are registered trademarks of Harman International Industries. U.S. patent numbers
and other worldwide patents issued and pending.
©2004 Harman Specialty Group.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.
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REVEL Concerta F12
Owner’s Manual
TABLE OF CONTENTS
Documentation Conventions . . . . . . . . . . . . . . . . . . . . . .4
About the F12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Highlights • Product Registration
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Loudspeaker Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Driver Complement • Cabinet • Filter Network • Woofer Port • Input
Panel
Installation Considerations . . . . . . . . . . . . . . . . . . . . . .10
Loudspeaker Placement • Listening Room Acoustics • Feet and
Optional Spikes
Making Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Single-Wired Connections • Bi-Wired Connections • Vertical
Bi-Amplified Connections • Horizontal Bi-Amplified Connections
Optimizing Performance . . . . . . . . . . . . . . . . . . . . . . . .17
Loudspeaker Volume Levels
Obtaining Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
4
REVEL Concerta F12
Owner’s Manual
DOCUMENTATION CONVENTIONS
This document contains general safety, installation, and operation
instructions for the Revel Concerta F12 Floor-Standing Loudspeaker. It is
important to read this document before attempting to use this product.
Pay particular attention to safety instructions.
WARNING Calls attention to a procedure, practice, condition,
or the like that, if not correctly performed or
adhered to, could result in injury or death.
CAUTION Calls attention to a procedure, practice,
condition, or the like that, if not correctly
performed or adhered to, could result in damage
to or destruction of part or all of the product.
Note Calls attention to information that is essential to
highlight.
This owner’s manual assumes that two F12s are included in the
loudspeaker setup.
5
REVEL Concerta F12
Owner’s Manual
ABOUT THE F12
Thank you for purchasing the Revel
Concerta F12 Floor-Standing Loudspeaker.
A full-frequency reproducer, the F12 delivers
accurate performance with wide frequency
range, low distortion and high output
across the entire audible spectrum. F12
loudspeakers are ideally suited as main
speakers in stereo system setups or as the
front speakers in a multichannel surround
home theater installation. Four proprietary
transducers, sophisticated filter networks
and an acoustically inert cabinet allow the
F12 to achieve precise imaging and impressive performance befitting the most
demanding home entertainment systems.
As a three-way loudspeaker, the F12 transducers effectively cover the entire audible
spectrum. Two 8-inch (203.2mm) woofers
deliver highly refined and dynamically
authoritative low frequencies down to the
lowest octaves. Housed in its own
sub-enclosure, a 5.25-inch (133.35mm)
midrange handles critical mid-band frequencies with natural tonal balance over a
wide dynamic range. A 1-inch (25mm)
dome tweeter reproduces high frequencies
to above audible frequencies. The tweeter
is mounted in a proprietary Controlled
Acoustic Impedance waveguide which optimizes the off-axis response of the system.
The result is superior coherency and musical realism.
Combining superior form and function,
the F12 loudspeaker’s proprietary drivers
feature a distinctive design that allows for
smoother frequency response. The woofer,
midrange and tweeter cones are constructed with Organic Ceramic Composite
diaphragm material which helps to reduce
distortion. The spiders are constructed with
a high-strength Nomex/cotton blend with
optimized geometry for increased linearity.
The woofer and midrange also include
butyl rubber surrounds that provide for
large, linear excursion capabilities.
The midrange is built with a 1-inch
(25mm) voice coil with a high-temperature
bobbin that enables high-power handling.
The midrange features optimized and
shielded magnetic circuits to minimize
harmonic distortion and prevent monitor
interference.
The woofer includes a copper voice coil
wound on a 1.5-inch (38mm) Kapton®
bobbin that enables higher power
handling. The woofer is also constructed
with a vented center pole for increased
high-temperature cooling and low compression.
The tweeter dome is under-hung with
copper-clad aluminum wire to prevent
distortion. The tweeter’s magnet contains
Ferrofluid® which helps to achieve higher
power handling with reduced compression.
The tweeter is also magnetically shielded
to prevent video monitor interference.
High-order filters at 575Hz and 3.0kHz
optimize loudspeaker on-axis and off-axis
response, helping to ensure smooth octaveto-octave balance and timbral accuracy.
Removable shorting-straps and gold-plated
binding posts accommodate single-wired,
bi-wired and bi-amplified connections.
The F12 cabinet is constructed with medium-density fiberboard (MDF) walls to
reduce cabinet-induced resonances. Rubber
feet are attached to the bottom of the cabinet to accomodate installations on tile or
hardwood floors. Optional (included) spikes
can be inserted into the feet for placement
on carpeted surfaces.
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REVEL Concerta F12
Owner’s Manual
Since 1996, Revel has stood at the forefront
of loudspeaker design. Backed by Harman
International’s extensive research and
design facilities, the Revel Concerta Series
Loudspeakers benefit from cutting-edge
development tools. A multi-channel listening lab allows for double-blind listening
tests. A laser interferometer enables
detailed driver and cabinet analysis.
Multiple large anechoic chambers provide
for precise tests and measurements. Finite
element analysis allows for advanced loudspeaker modeling. A stereo lithography apparatus aids in achieving tight tolerances.
Adding to the proud lineage of Revel’s
Ultima and Performa Series Loudspeakers,
the Concerta F12 solidifies Revel’s reputation as the leading designer and manufacturer of high-quality, high-performance loudspeakers.
HIGHLIGHTS
•True full-range reproduction
•Two proprietary 8-inch (203.2mm)
Organic Ceramic Composite woofers
•Proprietary 5.25-inch (133.35mm)
Organic Ceramic Composite midrange
•Proprietary 1-inch (25mm) Organic
Ceramic Composite-dome tweeter
•Proprietary tweeter waveguide for
greater high-frequency dispersion
• High output with low distortion
• Removable gold-plated shorting-straps
• Gold-plated binding posts
• Advanced woofer and midrange motor
structure
• Magnetic shielding
• Large voice coils for wide dynamic
range without compression
• Rubber feet/spikes
• Elegant cabinet design in a selection of
high-quality vinyl finishes
PRODUCT REGISTRATION
Please register the F12 within 15 days of
purchase. To do so, register online at
www.revelspeakers.com or complete and
return the included product registration
card. Retain the original, dated sales
receipt as proof of warranty coverage.
UNPACKING
The F12 requires special care and handling
during unpacking. Pay particular attention
to the precautions that appear in this section
and to other precautions that appear
throughout this owner’s manual.
WARNING
Do not attempt to lift or move the F12
alone. Proper lifting requires at least
two strong adults.When lifting the F12,
stand as straight as possible using your
leg muscles to lift. Do not attempt to
lift the F12 while bending at the waist.
When moving the F12, rock it side-toside into the desired position. Failure to
follow these procedures may result in
personal injuries and/or loudspeaker
damage.
When unpacking, save all packing materials
for possible future shipping needs. Refer to
the Obtaining Service section on page 17
for additional information.
To unpack the F12:
1. Place the packing carton on its side
and fully open the top flaps as shown
in Figure 1 (page 7).
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REVEL Concerta F12
Owner’s Manual
Unpacking
(continued)
2. Without allowing the top flaps to close,
stand the packing carton upside-down
as shown in Figure 1 (above).
3. Lift the packing carton off of the
loudspeaker as shown in Figure 2
(above). Use caution to avoid damaging the loudspeaker cabinet. At
this point, the loudspeaker will be
upside-down.
4. Remove the bottom pad and the
microfoam sheet. These items are
identified in Figure 3 (right).
Note
If the F12 is to be placed on a carpeted
floor, install the spikes while the loudspeaker is upside-down. Refer to the
Feet and Optional Spikes section that
begins on page 11 for instructions.
5. Grasping the sides of the cabinet, place
the F12 on its side. Then, place the F12
in the upright position.
6. When the F12 is in the upright position,
remove the Owner’s Manual, Warranty
Card and Spikes.
7. Remove the top pad and microfoam
sheet.
1
2
TOP
3
Figure 1: Unpacking the F12
Figure 2: Lifting the Carton
Figure 3: Packing Materials
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REVEL Concerta F12
Owner’s Manual
LOUDSPEAKER OVERVIEW
DRIVER COMPLEMENT
The numbers in Figure 4 (left) correspond
with the numbered items below.
1. Tweeter
2. Midrange
3. Woofers
CABINET
Reduces cabinet-induced colorations with
MDF walls. Rubber feet/spikes are attached
to the bottom of the cabinet for optimal
stability, accommodating installations on
tile, hardwood, and carpeted floors.
The cabinet’s vinyl finish does not require
routine maintenance. However, cabinet
surfaces that have been marked with
fingerprints, dust, or other dirt can be
cleaned using a soft cloth.
CAUTION
To prevent cabinet damage, do not use
a cloth made with steel wool or use
metal polish to clean the cabinet. Do
not use any cleaning products or polishes on the cabinet or grille.
Figure 4: F12 Loudspeaker (Front View)
The numbers in Figure 4 (above) correspond with the
numbered items in the Driver Complement section that
begins in the next column.
1
2
3
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REVEL Concerta F12
Owner’s Manual
3
2
3
2
1
FILTER NETWORK
Optimize loudspeaker on-axis and off-axis
response with high-order filters at 575Hz and
3.0kHz, helping to ensure smooth octaveto-octave balance and timbral accuracy.
Removable shorting-straps and gold-plated
binding posts accommodate single-wired,
bi-wired and bi-amplified connections.
REAR PANEL
The numbers in Figure 5 (above) correspond with the numbered items beginningbelow.
1. Woofer Port
Enhances low-frequency extension.
Computer-optimized internal and
external flares minimize distortion
resulting from air turbulence.
2. Input Connectors
Provide high and low-frequency input
connections from the associated power
amplifier(s). Two high-frequency and
two low-frequency gold-plated binding
posts are available. These inputs can be
configured for single-wired, bi-wired or
bi-amplified connections. Refer to the
Making Connections section that
begins on page 13 for additional information.
3. Shorting-Straps
Two gold-plated shorting-straps are
installed for single-wired connections.
The shorting-straps must be removed
when the system is configured for biwired or bi-amplified connections. Refer
to the Making Connections section
beginning on page 13 for additional
information.
The numbers in Figure 5 (above) correspond with the numbered items in the Rear Panel section that begins below.
Figure 5: F12 Loudspeaker (Rear View)
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REVEL Concerta F12
Owner’s Manual
INSTALLATION
CONSIDERATIONS
Loudspeaker fidelity depends on the following
three factors:
1. Loudspeaker accuracy
2. Loudspeaker placement
3. Listening room acoustics
Advanced Revel design features allow the
F12 to achieve exceptional acoustical
precision. As a result, experimenting with
loudspeaker placement and listening room
acoustics have the most significant impact
on the F12 loudspeaker’s performance.
LOUDSPEAKER PLACEMENT
The bulleted items that begin below
indicate important loudspeaker placement
considerations for the F12.
• Remove all obstructions between the
F12 and the primary listening position.
For instance, a coffee table between the
F12 and the primary listening position
will degrade stereo imaging and timbre.
Placing the F12s near large objects may
also cause unwanted reflections.
• For the best stereo imaging, place the
F12s at equal distances from the
primary listening position and in symmetry with the room as shown in
Figure 6 (right).
• For optimal stereo imaging and timbre,
point the F12s almost directly toward
the primary listening position as
shown in Figure 6 (right). The toe-in
angle can be reduced to widen the
soundstage, even to the point at which
the F12s are pointing straight forward.
• Move the F12s farther from the front
and side listening room walls to
improve stereo imaging and the sense
of spaciousness in the listening space.
• Move the F12s closer to the corners or
walls of the listening room to increase
bass response.
LISTENING ROOM ACOUSTICS
Listening rooms have a profound impact
on sound quality, particularly at lower frequencies below 400Hz. Ideally, listening
rooms would include optimized dimensional
ratios 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 factors that affect the loudspeaker and the listener.
Figure 6: Loudspeaker Placement
11
REVEL Concerta F12
Owner’s Manual
Listening Room Acoustics
(continued)
1. Surfaces and other boundaries often
cause large peaks and dips in lowfrequency extension. These peaks and
dips often range 12dB or more.
2. Standing waves (also known as room
modes or resonances) interact with
both the loudspeaker and the listener,
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 can
still 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. If you have
questions, contact an authorized Revel
dealer for assistance.
Acoustic Treatment Materials
The F12 features high-order filters at 575Hz
and 3.0kHz that optimize loudspeaker onaxis 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 points 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 F12s have been placed, sit in
the primary listening position.
2. Ask another person to slide a mirror
along the listening room walls.
3. Note the locations at which the person
sitting in the primary listening position
can see either F12. Be sure to look for
both F12s in the reflection on each
room boundary. These are reflection
points that require acoustic treatment
materials.
If acoustic treatment materials are not
available, hanging a rug over the reflection
points will help to 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.
FEET AND OPTIONAL SPIKES
When shipped, rubber feet are attached to
the bottom of the cabinet for optimal
stability, accommodating installations on
tile and hardwood floors. The F12 is shipped
as shown on the left side of Figure 7 (next
page).
Note
When moving the F12, avoid dragging it
across the floor, as this will damage the
feet, the spikes, and/or the wood cabinet
itself. Always lift the F12 and carry it to its
new location
Four metal spikes are included for use
when the loudspeaker is placed on carpeted floors.
Insert the spikes into the threaded inserts
at the bottom of the feet as shown on the
right side of Figure 7 (next page), so that
the spikes protrude from the cabinet.
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REVEL Concerta F12
Owner’s Manual
To install the spikes:
1. Place the F12 on its side on a soft towel
or carpeted floor.
2. Rotate the spike clockwise into the
threaded insert in the center of a rubber foot, round end first, as shown on
the right side of Figure 7 (above).
3. Repeat step 2 for the remaining three
spikes. Make sure to thread each spike
fully to achieve a level balance.
4. When all four spikes have been
installed, stand the F12 in the upright
position.
5. Repeat these steps to install the spikes
on the other F12.
CAUTION
Floor-standing loudspeakers such as the
F12 have a high center of gravity, which
may cause them to fall if tipped or
improperly positioned.To avoid this,
anchor the loudspeaker to the floor
and/or wall using the same procedures
and hardware used to anchor bookcases,
wall units, and other furniture. Harman
Specialty Group assumes no responsibility
for improper selection and installation
of hardware or for any personal injuries
or product damages resulting from
improper installation or a fallen loudspeaker.
(Threaded into
Center of Foot)
When shipped, the rubber
feet are attached as shown
here for loudspeaker
placement on tile or hardwood
floors.
The spikes should be
inserted as shown here
for loudspeaker placement on
carpeted floors.
Figure 7: Adjustable Spike feet
13
REVEL Concerta F12
Owner’s Manual
MAKING
CONNECTIONS
The F12 features gold-plated binding posts
and shorting-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 shorting-straps
identified in Figure 5 (page 9) 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:
• 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.
• The standard connection method uses
a single loudspeaker wire. The F12 is
equipped with two pairs of input terminals to allow for bi-wiring or bi-amplification. While we do 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.
•Vertical bi-amplified connections must
be made with identical power amplifiers.
Horizontal bi-amplified connections
can be made with identical or dissimilar power amplifiers with identical
“gain factors.”
• When making bi-amplified connections,
both power amplifiers must receive
identical input signals from the associated pre-amplifier. A “Y” adaptor is
required if the associated pre-amplifier
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.
• Use high-quality loudspeaker cable
with a maximum total loop resistance
of 0.07ohms or less (for each wire run).
Refer to the table below to determine
the appropriate maximum wire gauge.
Maximum Wire Gauge
Gauge Length Length
(AWG) (Feet) (Meters)
687 27
769 21
858 18
943 13
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 0.07ohms
(for each wire run) will cause the filter
network to mis-terminate, resulting in
considerable degradation of sound quality.
• Review the owner’s manuals for
associated audio components to
determine their connection procedures.
• If you have questions about the suitability of associated power amplifier components, contact an authorized Revel
dealer for information.
14
REVEL Concerta F12
Owner’s Manual
SINGLE-WIRED CONNECTIONS
Single-wired connections are made between
one F12 input channel and one power
amplifier output channel as shown in
Figure 8 (below).
To make single-wired connections:
1. Leave the shorting-strips identified in
Figure 5 (page 9) in place as shown in
Figure 8 (below).
2. Connect one pair of loudspeaker wires
to the desired F12 input connectors.
Then, connect the same pair of loudspeaker wires to the desired power
amplifier output connectors.
3. Repeat step 1 to connect the second F12
to a separate power amplifier.
BI-WIRED CONNECTIONS
Bi-wired connections are made between both
F12s and one power amplifier as shown in
Figure 9 (below).
To make bi-wired connections:
1. Remove the shorting-straps identified
in Figure 5 (page 9).
2. Connect one pair of loudspeaker wires
to the F12 input connectors labeled HF
(High Frequency) in Figure 9 (below).
Then, connect the same pair of loudspeaker wires to the desired power
amplifier outputs.
3. Connect another pair of loudspeaker
wires to the F12 input connectors
labeled LF (Low Frequency) in Figure 9
(below). Then, connect the same pair
of loudspeaker wires to the same power
amplifier outputs that were selected in
step 2.
4. Repeat steps 2 and 3 to connect both
input connectors on the second F12 to
a separate power amplifier.
Note
For all bi-wiring and bi-amplifying connections, the wire gauge for all wires should
be identical.
Figure 8: Single-Wired Connections
Right Front
F12
F12
Left Front
Amplifier
Right
Left
Figure 9: Bi-Wired Connections
Note
The actual F12 rear panel does not have
labeled input connectors. The binding
posts have red (positive) and black (negative) inserts to indicate polarity. In Figure
8 (above) the polarity symbols of the
inputs are identified for clarity. In Figure 9
(right), Figure 10 (page 15) and Figure 11
(page 16), the F12 input connectors are
labeled as either HF (High Frequency) or
LF (Low Frequency) to illustrate proper
connection procedures.
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REVEL Concerta F12
Owner’s Manual
VERTICAL BI-AMPLIFIED
CONNECTIONS
Vertical bi-amplified connections are made
between both F12s and two separate power
amplifiers. Each F12 is connected to its
own power amplifier, which sometimes
increases sonic performance. These power
amplifiers must be identical. Vertical biamplified connections are shown in Figure
10 (below).
Note
When making vertical bi-amplified
connections, both power amplifiers must
receive identical input signals from the
associated pre-amplifier. A “Y” adaptor is
required if the associated pre-amplifier
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:
1. Remove the input panel shorting-straps
identified in Figure 5 (page 9).
2. Connect one pair of loudspeaker wires
to the F12 input connectors labeled HF
(High Frequency) as shown in Figure
10 (below). Then, connect the same
pair of loudspeaker wires to the desired
power amplifier outputs.
3. Connect another pair of loudspeaker
wires to the F12 input connectors
labeled LF (Low Frequency) as shown
in Figure 10 (below). Then, connect the
same pair of loudspeaker wires to separate outputs on the same power amplifier.
4. Repeat steps 2 and 3 to connect the
input connectors on the second F12 to
another, identical power amplifier.
Note
Vertical bi-amplified connections must be
made using two identical power amplifiers.
CAUTION
•Failure to remove the shorting straps
may damage the associated power
amplifiers.
F12
Front Right
F12
Front Left
Amplifier 1
Amplifier 2
Figure 10: Vertical Bi-Amplified Connections
Vertical
bi-amplified connections require
IDENTICAL power
amplifiers!
16
REVEL Concerta F12
Owner’s Manual
HORIZONTAL BI-AMPLIFIED
CONNECTIONS
Horizontal bi-amplified connections are
also made between both F12s and two
separate power amplifiers. The F12 input
connectors labeled HF (High Frequency)
are connected to one power amplifier,
while the F12 input connectors labeled LF
(Low Frequency) are connected to another
power amplifier, which sometimes
improves sonic performance. These power
amplifiers can be identical or dissimilar,
but must have identical “gain factors.” If
the gain factors are dissimilar, a means of
adjusting the input level of at least one
power amplifier is required. Horizontal biamplified connections are shown in Figure
11 (below).
Note
When making horizontal bi-amplified
connections, both power amplifiers must
receive identical input signals from the
associated pre-amplifier. A “Y” adaptor is
required if the associated pre-amplifier
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 horizontal bi-amplified
connections:
1. Remove the input panel shorting-straps
identified in Figure 5 (page 9).
2. Connect one pair of loudspeaker wires
to the F12 input connectors labeled HF
(High Frequency) in Figure 11 (below).
Then, connect the same pair of loudspeaker wires to the desired power
amplifier outputs.
3. Connect another pair of loudspeaker
wires to the F12 input connectors
labeled LF (Low Frequency) as shown
in Figure 11 (below). Then, connect the
same pair of loudspeaker wires to the
desired outputs on another power
amplifier.
4. Repeat step 2 to connect the input connectors labeled HF (High Frequency) as
shown in Figure 11 (below) on the
second F12 to the same power amplifier
that was selected in step 2.
Front Right
F12
Front Right
Amplifier 1
Amplifier 2
F12
Front Left
Front Left
Right
Left
Right Left
Figure 11: Horizontal Bi-Amplified Connections
17
REVEL Concerta F12
Owner’s Manual
Note
Horizontal bi-amplified connections can
be made using identical or dissimilar
power amplifiers. However, these power
amplifiers must have identical “gain
factors.” If the gain factors are dissimilar,
a means of adjusting the input level of at
least one power amplifier is required.
Contact an authorized Revel dealer for
assistance.
5. Repeat step 3 to connect the input connectors labeled LF (Low Frequency) on
the second F12 to the same power
amplifier that was selected in step 3.
CAUTION
•Failure to remove the shorting straps
may damage the associated power
amplifiers.
OPTIMIZING
PERFORMANCE
To optimize the F12 for best performance:
1. Make connections with power amplifier(s). See the Making Connections
section beginning on page 13.
2. Begin playback of a familiar music or
film source.
• It is recommended to listen to well-
recorded dialogue from more than
one film source, as sound quality
varies from film to film.
3. Listen from the primary listening
position, increasing volume to a
comfortable level.
4. Experiment with the F12 loudspeaker’s
placement to achieve the best overall
tonal balance, image precision, and
sense of spaciousness in the listening
room. Refer to the Loudspeaker
Placement section that begins on page
10 for additional information about
loudspeaker placement.
5. Repeat these steps to optimize
performance of the second F12.
LOUDSPEAKER VOLUME LEVELS
High-order filters include steep cut-offs to
reduce potential damage from “out-ofband” frequencies. Combined with carefully
designed transducers and filter networks,
this approach helps the F12 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 strain sound.
CAUTION
To avoid damage, reduce volume level
immediately if loudspeaker sound is not
clean and clear.
OBTAINING SERVICE
To obtain warranty or non-warranty service, contact your authorized Revel dealer.
Refer to the included Revel Warranty Card
for warranty information.
DefinitionValueSpecification
18
Sensitivity
Impedance
90.5dB SPL with 2.83V @
1m (2 pi anechoic)
6Ω (nominal), 3.7Ω (minimum @ 188Hz)
Indicates the amount of power the associated power amplifier must deliver to drive the loudspeaker at reasonable volume levels. Conservatively-rated specifications indicate
moderate 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 3.7Ω allows a reasonably designed power
amplifier to drive Revel loudspeakers.
In-Room Response
±1.5dB from 55Hz to
15kHz
Indicates sound quality in context with other specifications.
A breakthrough 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 speaker’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
speaker 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.
Low-Frequency
Extension
Specifications are subject to change without notice.
-10dB @ 28Hz, -6dB @
40Hz, -3dB @ 52Hz
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.
Filter Network
Three-way, high-order @
575Hz and 3.0kHz
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.
Height
42.28 inches (107.39cm) (including feet)
Depth
14.27 inches (36.25cm) (including grille)
Weight
62.60 pounds (28.39kg) (including grille)
SPECIFICATIONS
18
Width
9.75 inches (24.77cm)
REVEL Concerta F12
Owner’s Manual
19
REVEL Concerta F12
Owner’s Manual
NOTES
A
About the F12, 5
Acoustic Treatment Materials, 11
B
Bass Response, 10, 13
Binding Posts, 5, 6, 9, 13
C
Cabinet, 5, 6, 7, 8, 11
CAUTION, 4, 8, 12, 13, 17
Compression, 6
Connections, 5
Bi-Amplified, 5, 9, 13, 15, 16,
17
Bi-Wired, 5, 9, 13, 14
Horizontal Bi-Amplified, 13,
16, 17
Input, 9
Making, 13
Power Amplifier, 9, 13, 14, 15,
16, 17, 18
Pre-Amplifier, 13, 15, 16
Single-Wired, 5, 9, 13, 14
Vertical Bi-Amplified, 13, 15
D
Depth, 18
Distortion, Reducing, 5, 6, 8, 9,
11, 17, 18
Documentation Conventions, 4
Driver Complement, 8
Dynamic Range, 6, 18
F
feet, 11
Figure, 7, 8, 9, 10, 12, 14
Figures, 7
Adjustable Spike Footing, 12
Bi-Amplified Connections, 15,
16
Bi-Wired Connections, 14
Horizontal Bi-Amplified
Connections, 16
Lifting the Carton, 7
Packing Materials, 7
Single-Wired Connections, 14
Filter Network, 9, 13, 17, 18
Filters, 5, 9, 11, 17, 18
First Reflection Points, 11
Frequency Response, 5, 11
G
Gain, 13, 16, 17
Grille, 7
H
Height, 18
High Frequencies, 5
High-Frequency Inputs, 9, 14,
15, 16
How to install spikes, 12
I
Impedance, 18
In-RoomResponse, 18
input connectors, 9, 14, 15, 16
Input Panel, 9, 13, 15, 16
Installation Considerations, 8, 9,
10, 12
installations, 11
Internal Bracing, 9
L
Listening Room, 10, 11, 17, 18
Listening Room Acoustics, 10
Loudspeaker Cable, 13
Loudspeaker Overview, 8
Loudspeaker Placement, 10, 11,
17
Loudspeaker Setup, 4
Loudspeaker Wires, 14, 15, 16
Low Frequencies, 5, 10, 11, 18
Low-Frequency Extension, 9, 11,
18
Low-Frequency Inputs, 9, 14, 15,
16, 17
Low-Frequency Response. See
Low-Frequency Extension.
Low-Frequency Roll-Offs, 18
M
Magnetic Shielding, 6
Maintenance, 8
Making connections, 13
Maximum Wire Gauge, 13
Mid-Band Frequencies, 5
Midrange, 5, 6, 8
Mirror Method, 11
Motor Structure, 6
N
Note, 4, 11, 13, 15, 16, 17
20
INDEX
REVEL Concerta F12
Owner’s Manual
O
Obtaining Service, 17
Off-Axis Response, 5, 9, 11
On-Axis Response, 5, 9, 11
Optimizing Performance, 17
Organic Ceramic Composite
Cone Material, 5, 6
Out-of-Band Frequencies, 17
P
Packing Carton, 6, 7
Polarity, 13
Primary Listening Position, 10,
11, 17
Product Registration, 6
R
Reflection Points, 11
Reflections, 10, 11
Resonances. See Reflections.
Room Modes. See Reflections.
Rubber feet, 6
S
Sensitivity, 18
Service, Obtaining 17
Shipping, 6
Shorting-Straps, 5, 6, 9, 13, 14,
15, 16
Specifications, 18
spike, installation, 12
spikes, 7, 11, 12
standard connection method, 13
Stereo Imaging, 10, 13
T
Table of Contents, 3
Timbre, 5, 10
Transducers, 17
Tweeter, 5, 6, 8
U
Unpacking, 6, 7
V
Voice Coil, 6
Volume Levels, 17, 18
W
WA RNING, 4, 6
Warranty, 6
Weight, 18
wire gauge, 13, 14
Woofer Port, 9
Woofers, 5, 6, 8
Y
Y Adaptor, 13, 15, 16
21
REVEL Concerta F12
Owner’s Manual
3 Oak Park, Bedford, MA, 01730-1413 USA | Telephone: 781-280-0300 | Fax: 781-280-0490 | www.revelspeakers.com
Customer Service: Telephone: 781-280-0300 | Sales Fax: 781-280-0495 | Service Fax: 781-280-0499
Part No. 353732-001 | Rev A | 11/04
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