Revel F52 User Manual

Revel Performa F52 Loudspeaker

Owner’s Manual

®

™

REVEL Performa F52
OWNER’S MANUAL

2

“Revel,” “Performa,” and the Revel logo are registered
trademarks of Harman International Industries.U.S.patent
numbers and other worldwide patents issued and pending.

©2005 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.

3 Oak Park
Bedford, MA 01730-1413 USA
Telephone: [phone]
Fax: [phone]
www.revelspeakers.com

Customer Support

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

Part No. 353739-001 | Rev A | 02/05

REVEL Performa F52
OWNER’S MANUAL

3

TABLE OF CONTENTS

Documentation Conventions . . . . . . . . . . . . . . . . . . . . . 4

About the F52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Highlights • Product Registration

Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Loudspeaker Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Driver Complement • Cabinet • Filter Network • Woofer Port •
Input Panel

Installation Considerations . . . . . . . . . . . . . . . . . . . . . . 11

Loudspeaker Placement • Listening Room Acoustics •
Adjustable Spikes

Making Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Single-Wired Connections • Bi-Wired Connections • Vertical
Bi-Amplified Connections • Horizontal Bi-Amplified Connections

Optimizing Performance . . . . . . . . . . . . . . . . . . . . . . . . 20

Loudspeaker Volume Levels

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Dimensions & Weight

Obtaining Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

REVEL Performa F52
OWNER’S MANUAL

4

DOCUMENTATION CONVENTIONS

This document contains general safety, installation, and operation instructions for the Revel
Performa F52 Floor-Standing Loudspeaker. It is important to read this document before
attempting to use this product. Pay particular attention to safety instructions.

Appears on the component to indicate the presence of uninsulated,
dangerous voltage inside the enclosure—voltage that may be sufficient
to constitute a risk of shock.

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

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 F52s are included in the loudspeaker setup.

5

REVEL Performa F52
OWNER’S MANUAL

ABOUT THE F52

Thank you for purchasing the Revel
Performa F52 floorstanding Loudspeaker. A
true full-range reproducer, the F52
delivers an impressive combination of wide
frequency range, uncompressed dynamic
range, and low distortion across the entire
audible spectrum. Five proprietary
transducers, sophisticated filter networks,
and an acoustically inert cabinet allow the
F52 to achieve acoustical precision and
performance befitting the most demanding
home entertainment systems.

The F52 features advanced woofer and
midrange motor structures that include
two high-grade Neodymium magnets
placed at the center of the motor structure,
inside the voice coil, for improved magnetic
shielding. Inside the motors, black-plated
steel shield cups facilitate heat dissipation
for higher power handling. Integrated
aluminum flux stabilization rings minimize
modulation inside the motor static gap
flux fields, greatly reducing distortion.
Copper rings inside each motor gap
reduces distortion even further. Both rings
are optimally sized and placed to maintain
constant linear voice coil inductance with
forward and backward cone motions.

Combining superior form and function,
the F52 transducers feature a distinctive
design that allows for smoother frequency
response. The woofer and midrange cones
are constructed with Organic Ceramic
Composite cone material to reduce distortion,
while the spiders are constructed with a
high-strength Nomex blend with optimized
geometry for increased linearity.

A three-way design, the F52 transducers
accurately reproduce the entire audible
spectrum. Three 6.5-inch (165mm) woofers
deliver highly refined and dynamically
authoritative low frequencies down to the
very lowest octaves. Housed in its own
sub-enclosure, a 5.25-inch (133mm)
midrange handles critical mid-band

frequencies with natural tonal balance
over a wide operating range. A 1-inch
(25mm) aluminum-dome tweeter,
incorporating a custom-designed wave
guide, blends perfectly with the midrange
and reproduces high frequencies well
above audible levels. The tweeter is vented
for improved cavity damping and low­frequency mechanical resonance.

High-order filters at 200Hz and 2.3kHz
optimize loudspeaker on and off-axis
response, helping to ensure smooth octave­to-octave 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. Separate Low
Frequency Compensation and Tweeter
Level switches allow precise adjustment for
less-than-ideal listening room acoustics
and loudspeaker placement. Removable
shorting straps and gold-plated binding
posts accommodate single-wired, bi-wired,
and bi-amplified connections.

The F52 cabinet is constructed with
1-inch (25mm) thick walls and extensive
internal bracing to reduce cabinet-induced
colorations. Rounded baffle edges minimize
diffraction and optimize off-axis response
for smoother high-frequency reproduction.
Adjustable spikes are attached to the
bottom of the cabinet for optimal stability,
accommodating installations on tile,
hardwood, or carpeted floors. A sonically
optimized grille is also included.

REVEL Performa F52
OWNER’S MANUAL

6

About the F52 (continued)

Since 1996, Revel has stood at the forefront
of loudspeaker design. Backed with Harman
International’s extensive research and
design facilities, all Revel Loudspeakers
benefit from cutting-edge 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 precise tests and measurements.

• Finite element analysis produces
advanced loudspeaker modeling.

•A stereo lithography apparatus helps
to achieve tight tolerances.

Adding to the proud lineage of Revel’s
Ultima and Performa Series Loudspeakers,
the F52 further advances Revel’s reputation
as the leading designer and manufacturer
of high-quality, high-performance
loudspeakers. Each F52 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, the F52 is an ideal
loudspeaker for the most demanding
listeners.

HIGHLIGHTS

• True full-range reproduction

• Three proprietary 6.5-inch (165mm)
woofers with Organic Ceramic
Composite cones

• Proprietary 5.25-inch (133mm)
midrange with Organic Ceramic
Composite cone

• Proprietary 1-inch (25mm) aluminum
dome tweeter incorporating a propri­etary wave-guide

• High output with low distortion

• Separate filter boards for each frequency
range

• Adjustable low frequency compensation

• Adjustable calibrated tweeter level

• Advanced woofer and midrange motor
structure

• Magnetic shielding

• Large voice coils for wide dynamic
range without compression

• Hand-tuned to match the production
reference standard within a fraction of
a decibel

• Adjustable spikes

• Elegant cabinet design in real wood
veneer finishes

• Removable gold-plated shorting straps

• Gold-plated binding posts.

PRODUCT REGISTRATION

Please register the F52 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.

7

UNPACKING

The F52 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 F52
alone. Proper lifting requires at least
two strong people.When lifting the
F52, keep your back as straight as possi­ble using the leg muscles to lift.When
moving the F52,rock it side-to-side into
the desired position.Failure to follow
these procedures may result in person­al injuries and/or loudspeaker damage.

To unpack the F52:

1. Place the packing carton on its side
and fully open the top flaps as shown
in figure 1 (below).

2. Without allowing the top flaps to close,
stand the packing carton in an inverted
position as shown in Figure 1 (below).

3. Lift the packing carton off of the
loudspeaker. Use caution to avoid

REVEL Performa F52
OWNER’S MANUAL

Figure 1: Unpacking the F52

damaging the loudspeaker cabinet
and objects located above the
packing carton. At this point, the
loudspeaker will be upsidedown.

4. Remove the grille from the back
middle pad. Then remove the
bottom pad and the front and back
middle pads. These items are
identified in Figure 2 (next page).

Note

While the loudspeaker is upside-down, it
is recommended to adjust the spikes if
the F52 will be placed on a carpeted
floor. Refer to the “Adjustable Spikes”
section for instructions.

5. Grasping the sides of the cabinet, place
the F52 on its side. Then place the F52
in the upright position without allow­ing the protective bag identified in
Figure 2 (right) to become “stuck”
under the spikes.

6. When the F52 is in the upright posi­tion, remove the protective bag.

Save all packing materials for possible
future shipping needs.

Carton Dimensions

Width: 16.63 inches (42.24 cm)
Length: 28 inches (71.12 cm)
Depth: 49.63 inches (1.26 m)

BOTTOM

2

BOTTOM

3

BOTTOM

TOP

1

TOP

TOP

REVEL Performa F52
OWNER’S MANUAL

8

LOUDSPEAKER OVERVIEW

Figure 2: Packing Materials

DRIVER COMPLEMENT

The numbers in Figure 3 (next page)
correspond with the numbered items in
this section.

1. Proprietary 1-inch (25mm) aluminum
dome tweeter incorporating a propri­etary wave-guide.

2. Proprietary 5.25-inch (133mm)
midrange with Organic Ceramic
Composite cone.

3. Three proprietary 6.5-inch (165mm)
woofers with Organic Ceramic
Composite cones.

CABINET

Reduces cabinet-induced colorations with
1-inch (25mm) thick walls and extensive

internal bracing. Adjustable spikes are
attached to the bottom of the cabinet for
optimal stability, accommodating
installations on tile, hardwood, and
carpeted floors.

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 a high-quality
furniture polish. Use a high-quality wax
for a higher-gloss finish.

• To clean the cabinet, apply furniture
polish to a soft cloth; then use the cloth
to lightly wipe the cabinet surface.

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

Protective Bag

Front
Middle Pad

Top Pad

Bottom Pad

Grille

Back Middle Pad

9

REVEL Performa F52
OWNER’S MANUAL

Figure 3: F52 Loudspeaker (Front View)

The numbers in Figure 3 (above) correspond with the
numbered items in the “Driver Complement” section on
this page.

Cabinet

3

2

1

CAUTION

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.

FILTER NETWORK

Optimize loudspeaker on and off-axis
response with high-order filters at 200Hz
and 2.3kHz, helping to ensure smooth
octave-to-octave 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.
Removable shorting straps and gold-plated
binding posts accommodate single-wired,
bi-wired, and bi-amplified connections,
while separate Low Frequency
Compensation and Tweeter Level switches
provide precise balance to compensate for
less-than-ideal listening room acoustics
and loudspeaker placement.

WOOFER PORT

Enhances low-frequency extension.
Computer-optimized internal and external
flares minimize distortion resulting from
air turbulence. The woofer port is identified
in Figure 4 (next page).

REVEL Performa F52
OWNER’S MANUAL

10

INPUT PANEL

The numbers in Figure 4 (below) correspond
with the numbered items in this section.

1. Low Frequency Compensation
Switch

Compensates for less-than-ideal
loudspeaker placement near a wall, in
an entertainment center, or in a room
that “boosts” low frequencies.

• Select the Normal setting if the
loudspeaker is located at least 3 feet
(0.91m) from walls and other large
objects.

• Select the Contour setting to reduce
low-frequency signal levels.

• Select the Boundary setting if the
loudspeaker is built into an
entertainment center or shelving
unit or if the loudspeaker is located
less than about 2 feet (0.61m) from
walls or other large objects.

Figure 4: F52 Loudspeaker (Rear View)

The numbers in Figure 4 (shown here) correspond with the
numbered items in the “Input Panel” section that begins
on this page.

Contour

Normal

Boundary

1

Low Frequency

3

Compensation

-.5

-1

Tweeter Level

(dB)

0

+.5

+1

2

4

4

Woofer
Port

Low Frequency Input

Remove straps
for bi-wire
or bi-amp

High Frequency Input

Revel
Northridge, California
Assembled in U.S.A.

Serial No.

3

Input Panel

Contour

0

-5

Normal

Low Frequency
Compensation

+5

Boundary

+1

-1

Tweeter Level

(dB)

Remove straps
for bi-wire

High Frequency Input

or bi-amp

Low Frequency Input

Revel
Northridge, California
Assembled in U.S.A.

Serial No.

REVEL Performa F52
OWNER’S MANUAL

11

2. Tweeter Level (dB) Switch

Alters tweeter output levels by –1, –0.5,
0, +0.5, or +1dB.

Note

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

3. Input Ter minals

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

4. Shorting Straps

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

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
F52 to achieve exceptional acoustical
precision. Each F52 is individually hand­tuned 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
F52’s performance.

LOUDSPEAKER PLACEMENT

The bulleted items that begin below
indicate important loudspeaker placement
considerations for the F52.

• Remove all obstructions between the
F52 and the primary listening position.
For instance, a coffee table between the
F52 and the primary listening position
will degrade stereo imaging and tim­bre. Placing the F52s near large objects
may also cause unwanted reflections.

• For the best stereo imaging, place the
F52s at equal distances from the
primary listening position and the side
walls as shown in Figure 5 (next page).

REVEL Performa F52
OWNER’S MANUAL

12

Loudspeaker Placement (continued)

• For optimal stereo imaging and timbre,
point the F52s almost directly toward
the primary listening position as
shown in Figure 5 (right). The toe-in
angle can be reduced to widen the
soundstage, even to the point at which
the F52s are pointing straight forward.

• Move the F52s farther from the front
and side listening room walls to
improve stereo imaging and the sense
of spaciousness in the listening space.

• Move the F52s 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, particularly at lower frequencies.
In fact, listening rooms can dominate
sounds below about 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 determinants that affect the
loudspeaker and the listener.

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. Contact an
authorized Revel dealer for assistance.

Primary Listening Position (Couch)

Acoustic Treatment Materials

F52

(Left)

Front Wall

F52

(Right)

Figure 5: Loudspeaker Placement

13

Acoustic Treatment Materials

The F52 features high-order filters at
220Hz and 2.3kHz that optimize 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 F52s 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 F52. Be sure to look for
both F52s 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 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.

ADJUSTABLE SPIKES

When shipped, adjustable spikes are
attached to the bottom of the cabinet for
optimal stability, accommodating
installations on tile, hardwood, and
carpeted floors. The F52 is shipped with
spikes attached as shown on the left side of
Figure 6 (next page), with the round end
protruding from the cabinet. The protective
cap is placed over the round end to protect
tile and hardwood floors.

Note

When moving the F52, avoid dragging it
across the floor.

If the F52 is placed on a carpeted floor, the
spikes should be adjusted as shown on the
right side of Figure 6 (next page), with the
sharp end protruding from the cabinet. If
needed, follow the instructions that begin
below to adjust the spikes.

To adjust the spikes:

1. Place the F52 on its side on a soft towel
or carpeted floor.

2. Remove the protective cap from the
round end of the spike. Save it for
possible future use.

3. Rotate the locking ring counterclockwise
to detach it from the spike. Save it for
use in step 6.

4. Rotate the spike counterclockwise to
remove it from the cabinet.

REVEL Performa F52
OWNER’S MANUAL

REVEL Performa F52
OWNER’S MANUAL

14

Adjustable Spikes (continued)

5. Rotate the spike clockwise into the
cabinet, round end first, as shown on
the right side of Figure 6 (below).

6. Reattach the locking ring, rotating it
clockwise to firmly secure the spike to
the cabinet.

7. Repeat steps 2 through 6 for the
remaining three spikes. In step 6, make
sure to thread each locking ring to
achieve a level balance.

8. When all four spikes have been
reversed, stand the F52 in the upright
position. If needed, repeat steps 1 and
6 to achieve a level balance.

9. Repeat these steps to adjust the spikes
on the other F52.

CAUTION

Floor-standing loudspeakers such as the
F52 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 proper selection and installation of
hardware or for any personal injuries or
product damages resulting from improper
installation or a fallen loudspeaker.

Locking Ring

F52

Round End

(Protective Cap
Attached)

Locking Ring

Round End

Spike End

Protective Cap

Spike End

Spike End

Round End

(Protective Cap Removed)

When shipped, the spikes
are attached as shown here
for loudspeaker placement on
tile or hardwood floors.

The spikes should be
attached as shown here
for loudspeaker placement on
carpeted floors.

Figure 6: Adjustable Spikes

15

MAKING
CONNECTIONS

The F52 features gold-plated binding posts
and shorting straps that allow it to be
configured for single-wired, bi-wired, or
bi-amplified connections.

CAUTION

• Never make or break connections
unless all system components are
powered off.

• Remove the shorting straps identified
in Figure 4 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 connection method uses
a single loudspeaker wire. The F52 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 0.07ohms or less (for each wire run).
Refer to the table at the top 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 0.07Ω
(for each wire run) will cause the filter
network to be mis-terminated, resulting in
considerable degradation of sound quality.

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

REVEL Performa F52
OWNER’S MANUAL

REVEL Performa F52
OWNER’S MANUAL

SINGLE-WIRED CONNECTIONS

Single-wired connections are the most
common. These are made between one
pair of F52 input terminals and one power
amplifier output channel as shown in
Figure 7 (right).

To make single-wired connections:

1. Connect one pair of loudspeaker wires
to the desired F52 input terminals.
Then connect the same pair of
loudspeaker wires to the desired power
amplifier output channel. (The high­frequency input terminals are
recommended.)

2. Repeat step 1 to connect the second F52
to a separate power amplifier output
channel.

16

Making Connections (continued)

• 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 F52 to the
associated power amplifier.

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

Figure 7: Single-Wired Connections

Normal

F52

POWER

AMPLIFIER

Contour

Low Frequency
Compensation

Low Frequency Input

Boundary

Remove straps
for bi-wire
or bi-amp

0

-.5

-1

Tweeter Level

(dB)

High Frequency Input

Revel
Northridge, California
Assembled in U.S.A.

Serial No.

+.5

+1

OUTPUT

REVEL Performa F52
OWNER’S MANUAL

17

OUTPUT

POWER

AMPLIFIER

Contour

Normal

Boundary

Low Frequency
Compensation

Low Frequency Input

Remove straps
for bi-wire
or bi-amp

High Frequency Input

Tweeter Level

(dB)

Revel
Northridge, California
Assembled in U.S.A.

Serial No.

-1

+1

+.5

-.5

0

F52

Figure 8: Bi-Wired Connections

BI-WIRED CONNECTIONS

Bi-wired connections are made between
both pairs of F52 input terminals and one
power amplifier output channel as shown
in Figure 8 (right).

To make bi-wired connections:

1. Remove the shorting straps identified
in Figure 4.

2. Connect one pair of loudspeaker wires
to the high-frequency pair of F52 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 low-frequency pair of F52
input terminals. Then connect the
same pair of loudspeaker wires to the
same power amplifier output channel
that was selected in step 2.

4. Repeat steps 2 and 3 to connect both
input terminals on the second F52 to a
separate power amplifier output channel.

VERTICAL BI-AMPLIFIED CONNECTIONS

Vertical bi-amplified connections are made between both pairs of F52 input terminals and two
separate power amplifier output channels. Each F52 is connected to its own power amplifier,
which sometimes increases sonic per formance. These power amplifiers must be identical.
Vertical bi-amplified connections are shown in Figure 9 (next page).

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.

REVEL Performa F52
OWNER’S MANUAL

18

Vertical Bi-Amplified Connections

(continued)

To make vertical bi-amplified
connections:

1. Remove the shorting straps identified
in Figure 4.

2. Connect one pair of loudspeaker wires
to the high-frequency pair of F52 input
terminals. Then connect the same pair
of loudspeaker wires to the desired
power amplifier output channel.

Figure 9: Vertical Bi-Amplified Connections

Vertical
bi-amplified
connections

require

IDENTICAL

power

amplifiers!

3. Connect another pair of loudspeaker
wires to the low-frequency pair of F52
input terminals. Then connect the
same pair of loudspeaker wires to a
separate output channel on the same
power amplifier.

4. Repeat steps 2 and 3 to connect both
input terminals on the second F52 to
another, identical power amplifier.

Note

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

Contour

Normal

Low Frequency
Compensation

Low Frequency Input

Boundary

Remove straps
for bi-wire
or bi-amp

0

-.5

-1

Tweeter Level

(dB)

High Frequency Input

Revel
Northridge, California
Assembled in U.S.A.

Serial No.

+.5

+1

Contour

Normal

Low Frequency
Compensation

Low Frequency Input

Boundary

Remove straps
for bi-wire
or bi-amp

0

-.5

-1

Tweeter Level

(dB)

High Frequency Input

Revel
Northridge, California
Assembled in U.S.A.

Serial No.

+.5

+1

F52

(FRONT RIGHT)

POWER

AMPLIFIER 1

OUTPUT 2

OUTPUT 1

F52

(FRONT LEFT)

POWER

AMPLIFIER 2

OUTPUT 2

OUTPUT 1

19

REVEL Performa F52
OWNER’S MANUAL

HORIZONTAL BI-AMPLIFIED
CONNECTIONS

Horizontal bi-amplified connections are
made between both pairs of F52 input
terminals and two separate output channels
on two separate power amplifiers. The
high-frequency pair of F52 input terminals
is connected to one power amplifier, while
the low-frequency pair is 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

OUTPUT 1

POWER

AMPLIFIER 1

OUTPUT 2

Contour

Normal

Boundary

Low Frequency
Compensation

Low Frequency Input

Remove straps
for bi-wire
or bi-amp

High Frequency Input

Tweeter Level

(dB)

Revel
Northridge, California
Assembled in U.S.A.

Serial No.

-1

+1

+.5

-.5

0

F52

(FRONT RIGHT)

OUTPUT 1

POWER

AMPLIFIER 2

OUTPUT 2

Contour

Normal

Boundary

Low Frequency
Compensation

Low Frequency Input

Remove straps
for bi-wire
or bi-amp

High Frequency Input

Tweeter Level

(dB)

Revel
Northridge, California
Assembled in U.S.A.

Serial No.

-1

+1

+.5

-.5

0

F52

(FRONT LEFT)

Figure 10: Horizontal Bi-Amplified Connections

least one power amplifier is required.
Horizontal bi-amplified connections are
shown in Figure 10 (below).

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.

REVEL Performa F52
OWNER’S MANUAL

20

Horizontal Bi-Amplified
Connections

(continued)

To make horizontal bi-amplified
connections:

1. Remove the shorting straps identified
in Figure 4.

2. Connect one pair of loudspeaker wires
to the high-frequency pair of F52 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 F52
input terminals. Then connect the
same pair of loudspeaker wires to the
desired output channel on another
power amplifier.

Note

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.

4. Repeat step 2 to connect the high­frequency pair of F52 input terminals
on the second F52 to the same power
amplifier that was selected in step 2.

5. Repeat step 3 to connect the low­frequency pair of F52 input terminals
on the second F52 to the same power
amplifier that was selected in step 3.

OPTIMIZING
PERFORMANCE

To optimize the F52 for best performance:

1. Set the Tweeter Level switch to 0.
(Different listening rooms may require
other settings.)

2. Set the Low Frequency Compensation
switch to the appropriate position.

• Select the Normal setting if the

loudspeaker is located at least 3
feet (0.91m) from walls.

• Select the Contour setting to reduce

low-frequency signal levels. This
setting is useful for applications in
which the loudspeakers cannot be
optimally placed, or where room
acoustics result in excessive low­frequency level. Such conditions
are common with stiff room
construction, such as concrete or
brick. The Contour setting cannot
perfectly counteract such conditions,
but in may cases can significantly
improve the overall spectral
balance.

• Select the Boundary setting if the

loudspeaker is built into an
entertainment center or shelving
unit or if the loudspeaker is located
less than about 2 feet (0.61m) from
walls and other objects.

3. Begin playback of a familiar music or
film source.

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

21

5. Experiment with the F52’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 for additional information
about loudspeaker placement.

6. Adjust the Tweeter Level switch on
each F52 to change high-frequency
balance and timbre.

7. Repeat these steps to optimize
performance of the second F52.

Note

For best results, set the Tweeter Level
switch on both F52s to the same position.

LOUDSPEAKER VOLUME LEVELS

High-order filters include steep cut-offs to
reduce potential damage from “out-of­band” frequencies. Combined with carefully
selected transducers and filter network
components, this approach helps the F52
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.

SPECIFICATIONS

DIMENSIONS & WEIGHT

Width: 9.5 inches (24.13cm)

Height: 43.94 inches (111.61cm)

Depth: 17.5 inches (44.45 cm) with

grille
17 inches (43.18cm) without

grille

Weight: 87.70 pounds (39.78kg) with

grille

86.20 pounds (39.10kg) without
grille

Specifications are subject to

change without notice.

Note

Other specifications are listed on the next
page.

OBTAINING SERVICE

To obtain warranty or non-warranty service,
contact an authorized Revel dealer. Refer to
the included Revel warranty card for
warranty information.

REVEL Performa F52
OWNER’S MANUAL

DefinitionSpecification Value

REVEL Performa F52
OWNER’S MANUAL

22

Sensitivity

Impedance

87.5dB SPL with 2.83Vrms
@1 meter (4 pi anechoic)

• 6.5Ω (nominal)

• 3.5Ω (minimum @
373Hz)

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 3.5Ω allows a reasonably designed power
amplifier to drive Revel loudspeakers.

Filter Network

• Three-way, high-order
acoustic response @
200Hz and 2.3kHz

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. Revel’s filter networks
are mounted on printed circuit boards with carefully selected
components. Woofer, midrange, and tweeter filter boards
are independent of one another. Each includes provisions
for single-wired, bi-wired, and bi-amplified connections as
well as flexible controls for user adjustments.

Target Response

• ±0.5dB from 31Hz to
20Hz

Indicates sound quality in context with the individual
loudspeaker’s application, considering the acoustical impact
of its placement. An ideal response goal, a target response
is not flat at either end of the audible spectrum and is used
when the ideal reference is not a flat line.

In-Room Response

• ±0.5dB from 33Hz to
18kHz

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 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.

First Reflections
Response

• ±0.5dB from 33Hz to
17kHz

Indicates the response listeners hear in relation to the first
reflections from walls, ceilings, and floors. This specification
indicates that Revel loudspeakers will remain accurate,
even in listening rooms that cast strong reflections.

Listening Window
Response

• ±1.0dB from 38Hz to
18kHz

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.

Low-Frequency
Extension

• –10dB @ 23Hz

• –6dB @ 26Hz

• –3dB @ 37Hz

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.

Specifications are subject to change without notice.

23

REVEL Performa F52
OWNER’S MANUAL

INDEX

A–C

about the F52 5–6
acoustic treatment materials

13

adjustable spikes 5, 7, 8,

13–14

bass response 12
bi-amplified connections 5, 9,

11, 15, 16, 17–20, 22

bi-wired connections 5, 9, 11,

15, 17, 22

binding posts 5, 9, 11, 15 (see

also input terminals)

boundary setting 10, 20
cabinet 5, 6, 7, 8, 9–10, 13, 14
care and maintenance 8
CAUTION 4, 9, 14, 15, 21
cones 5
connections

bi-amplified connections 5,

9, 11, 15, 16, 17–20, 22

bi-wired connections 5, 9,

11, 15, 17, 22

horizontal bi-amplified

connections 15, 19–20
making connections 15–20
single-wired connections 5,

9, 11, 15, 16, 22
vertical bi-amplified

connections 15, 17–18

contour setting 10, 20

D–G

dimensions 21
driver complement 8
F52, about the 5–6
filter network 5, 9, 15, 21, 22
first reflections response 22
grille 5, 7, 8, 21

H–I

high-frequency input terminals

11, 16, 17, 18, 19, 20

highlights, F52 6
horizontal bi-amplified

connections 15, 19–20
impedance 22
in-room response 22
input panel 10
input terminals

high-frequency 11, 15, 16,

17, 18, 19, 20

low-frequency 11, 15, 17, 18,

19, 20

(see also binding posts)
installation considerations 5,

8, 11–14
listening room acoustics 5, 9,

11, 12–13, 20, 22

listening window response 22
loudspeaker overview 8–11
loudspeaker placement 5, 9,

10, 11–12, 21, 22

loudspeaker volume levels

21, 22
loudspeaker wires 15, 16, 17,

18, 20

low frequency compensation

switch 5, 9, 10, 11, 20
low-frequency input terminals

11, 17, 18, 19, 20

L–N

making connections 15–20
maximum wire gauge 15
midrange 5, 8, 9, 22
mirror method 13
motor structure 5
normal setting 10, 20
Note 4, 7, 11, 13, 15, 17, 18,

19, 20, 21

O–R

obtaining service 21
off-axis response 5, 9, 13
on-axis response 5, 9, 13, 22
optimizing performance

20–21

packing materials 7
power amplifiers 11, 15, 16,

17, 18, 19, 20, 22

preamplifiers 16, 17, 19
product registration 6
reflection points 11, 13, 22
room modes/resonances 12

S–W

sensitivity 22
shorting straps 5, 9, 11, 15,

17, 18, 20

single-wired connections 5, 9,

11, 15, 16, 22

specifications 21–22
spikes, adjustable 5, 7, 8,

13–14

table of contents 3
target response 22
tweeter 5, 8, 9, 11, 22
tweeter level switch 5, 9, 11,

20, 21

unpacking 7–8
vertical bi-amplified

connections 15, 17–18
WARNING 4, 7
warranty card 6, 21
weight 21
wire gauge, maximum 15
woofers 5, 8, 9, 22
woofer port 9

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Part No. 353739-001 | Rev A | 02/05