Revel C52 User Manual

Revel Performa C52 Loudspeaker

Owner’s Manual

®

®

REVEL Performa C52
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. 353735-001 | Rev A | 02/05

REVEL Performa C52
OWNER’S MANUAL

3

TABLE OF CONTENTS

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

About the C52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Highlights • Product Registration

Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

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

Driver Complement • Cabinet • Filter Network • Input Panel

Loudspeaker Placement . . . . . . . . . . . . . . . . . . . . . . . . 10

Flush Mounted • On Top of Monitor • Stand Mounted •
Adjustable Spikes

Making Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

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

Optimizing Performance . . . . . . . . . . . . . . . . . . . . . . . . 18

Loudspeaker Volume Levels

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Dimensions & Weight

Obtaining Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

REVEL Performa C52
OWNER’S MANUAL

4

DOCUMENTATION CONVENTIONS

This document contains general safety, installation, and operation instructions for the Revel
Performa C52 Center-Channel 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.

5

REVEL Performa C52
OWNER’S MANUAL

ABOUT THE C52

Thank you for purchasing the Revel
Performa C52 center-channel loudspeaker.
The C52 delivers exceptional freedom from
coloration and distortion across a wide
dynamic range, making it the perfect
companion for the Revel Performa F52 and
F32 front loudspeakers. Four proprietary
transducers, sophisticated filter networks,
and flexible placement options allow the
C52 to serve as the center channel in the
most demanding home entertainment
systems.

The C52 features advanced woofer and
midrange motor structures that include
two high-grade Neodymium magnets
placed at the center of the motor
structures, inside the voice coils, 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 C52 transducers feature a distinctive
design that provides smoother frequency
response. The woofer and midrange cones
are constructed with Organic Ceramic
Composite material to reduce distortion,
while the spiders are constructed with a
high-strength Nomex blend with optimized
geometry for increased linearity.

A true three-way center-channel, the
C52 delivers a broad range of frequencies
with striking detail. Two 8-inch (203mm)
woofers provide high excursion capabilities,
reproducing low frequencies with spectacular
dynamic range. Housed in its own separate
sub-enclosure, a 5.25-inch (133mm)

midrange handles critical mid-band
frequencies with natural tonal balance over
a wide dynamic 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 the audible
spectrum.

High-order filters at 235Hz and 2kHz
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. Removable shorting
straps and gold-plated binding posts
accommodate single-wired, bi-wired, and
bi-amplified connections.

Placement Compensation and High
Frequency Level switches allow the C52 to
deliver stellar center-channel performance,
even when confronted with less-than-ideal
loudspeaker placement and listening room
acoustics. The Placement Compensation
switch offers three settings to accommodate
loudspeaker placement in a bookcase or
wall unit; on top of a video monitor or
above a rear projection screen; or placed
on a stand. A separate High Frequency
Level switch achieves precise balancing of
high frequencies for optimal timbral
balance.

The C52 cabinet is constructed with

0.75-inch (19mm) 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.
Two threaded inserts on the bottom of the
cabinet accommodate adjustable spikes,
providing optimal loudspeaker stability
and positioning. A sonically optimized
grille is also included.

REVEL Performa C52
OWNER’S MANUAL

6

About the C52 (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 C52 further solidifies Revel’s reputation
as the leading designer and manufacturer
of high-quality, high-performance
loudspeakers. Each C52 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 C52 is the
obvious choice for unrivaled center-channel
performance.

HIGHLIGHTS

• Optimal center-channel performance

• Two proprietary 8-inch (203mm)
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

• Separate woofer, midrange, and tweeter

filter boards

• Placement Compensation switch

• Adjustable calibrated tweeter level

• Flexible placement options

• Advanced woofer and midrange motor
structures

• Magnetic shielding

• Large voice coils for wide dynamic
range without compression

• Gold-plated binding posts

• Removable gold-plated shorting straps

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

• Adjustable spikes

• Elegant cabinet design in real wood
veneer finishes

PRODUCT REGISTRATION

Please register the C52 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 C52 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.

Note

When unpacking, save all packing materials
for possible future shipping needs.

7

To unpack the C52:

1. Place the packing carton upright on a
soft towel or carpeted floor and fully
open the top flaps as shown in step 1 of
Fgure 1 (above).

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

3. Lift the packing carton off of the
loudspeaker as shown in step 3 of
Figure 1. Use caution to avoid damag­ing the loudspeaker cabinet. At this
point, the loudspeaker will be upside­down.

4. Leaving the protective end pads on,
place the speaker on one end (one end­pad will be on the floor under the
speaker; the other will be at the top).

5. Remove the grille and the top end pad.

6. Carefully turn the C52 until it is resting
on the end where you just removed the
end pad.

7. Remove the remaining end pad and
the protective bag.

REVEL Performa C52
OWNER’S MANUAL

Figure 1: Unpacking the C52

Right Pad

Left Pad

Protective

Bag

Grille

Spikes

Figure 2: Packing Materials

8. (Optional) If you plan to install the
spikes, lay the speaker down so the
bottom is facing upward (the holes for
the spikes will be exposed).

Remove the spikes from the left pad
and attach them to the bottom of the
loudspeaker. Refer to “Adjustable

Spikes” on page 12 for detailed installa­tion instructions.

Top

Bottom

1

Length: 29.19 inches (74.14cm)
Width: 18.44 inches (46.83cm)
Depth: 16.63 inches (42.23cm)

2

Carton Dimensions

Bottom

3

Top

REVEL Performa C52
OWNER’S MANUAL

8

LOUDSPEAKER OVERVIEW

DRIVER COMPLEMENT

The numbers in Figure 3 (above) 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. Two proprietary 8-inch (203mm)
woofers with Organic Ceramic
Composite cones

CABINET

Reduces cabinet-induced colorations with

0.75-inch (19mm) thick walls and extensive

internal bracing. Rounded baffle edges
minimize diffraction and optimize off-axis
response for smoother high-frequency
reproduction. Two threaded inserts on the

Figure 3: C52 Loudspeaker (Front View)

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

bottom of the cabinet accommodate spikes,
which provide adjustable tilt when the C52
is placed on or above a video monitor.

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.

CAUTION

To prevent cabinet damage, do not use
any cloth containing 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 235Hz
and 2kHz, 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
Placement Compensation and High
Frequency Level switches provide precise
balance to compensate for less-than-ideal
listening room acoustics and loudspeaker

13

2

Pedestal Stand

(Optional)

3

Cabinet

On Top Of

Monitor

Flush

Mounted

Stand

Mounted

Placement

Compensation

Low Frequency Input

Remove straps
for bi-wire
or bi-amp

High Frequency Input

High Frequency

Level (dB)

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

Serial No.

-1

+1

+.5

-.5

0

Input Panel

On Top Of

Monitor

Flush

Mounted

Stand

Mounted

Placement

Compensation

Low Frequency Input

Remove straps
for bi-wire
or bi-amp

High Frequency Input

High Frequency

Level (dB)

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

Serial No.

-1

+1

+.5

-.5

0

1

2

4

3

4

Figure 4: C52 Loudspeaker (Rear View)

9

REVEL Performa C52
OWNER’S MANUAL

placement.

INPUT PANEL

setting if the C52 is placed on top
of a video monitor or mounted on
a shelf.

• Select the Stand Mounted setting if
the C52 is placed on a stand (such
as the optional pedestal stand).

Note

Rotating the Placement Compensation
switch clockwise increases low-frequency
output.

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

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

1. Placement Compensation
Switch

Optimizes the C52’s response to different
loudspeaker placements. Refer to the
“Loudspeaker Placement” section for
more information.

• Select the Flush Mounted setting if

the C52 is placed in a bookcase or
wall unit.

• Select the On Top of Monitor

REVEL Performa C52
OWNER’S MANUAL

10

Input Panel (continued)

2. High Frequency Level (dB)
Switch

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

3. Input Terminals

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.

LOUDSPEAKER
PLACEMENT

Loudspeaker fidelity depends on the following
three factors:

1. Loudspeaker accuracy

2. Listening room acoustics

3. Loudspeaker placement

Advanced Revel design features allow the
C52 to achieve stunning acoustical
precision with exceptional freedom from
coloration and distortion across a wide
dynamic range. As a result, experimenting
with loudspeaker placement will have the
most significant impact on the C52’s
performance.

In general, it is recommended to remove
all obstructions between the C52 and the
primary listening position. The Placement
Compensation switch can be used to
optimize the C52’s performance for the
loudspeaker placement options described
in this section.

The C52 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 the C52. These magnetic
fields decrease rapidly with distance, so
moving the C52 farther away from the
monitor will reduce interference. It is
important to confirm that the C52 is
suitable for use with the intended CRT
monitor.

Note

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

REVEL Performa C52
OWNER’S MANUAL

11

FLUSH MOUNTED

Set the Placement Compensation
switch to Flush Mounted if the C52
loudspeaker is placed in a bookcase or
wall unit as shown in Figure 5
(top-right).

ON TOP OF MONITOR

Set the Placement Compensation
switch to On Top of Monitor if the
C52 loudspeaker is placed on top of a
video monitor as shown in Figure 6
(center-right).

If desired, spikes can be added to the
bottom of the cabinet to create the
proper tilt angle. Refer to the
“Adjustable Spikes” section for
additional information.

STAND MOUNTED

Set the Placement Compensation
switch to Stand Mounted if the C52
loudspeaker is placed on a stand as
shown in Figure 7 (bottom-right). An
optional pedestal stand is available at
authorized Revel dealers.

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.

Figure 7: Stand Mounted

Figure 5: Flush Mounted

Figure 6: On Top of Monitor

Left

Rear Projection Screen

Large Direct-View Monitor

or

C52

(Center)

Right

C52

(Center)

Rear Projection Screen

Large Direct-View Monitor

Front

Left

Front or Large Rear

Projection Screen

Optional

Pedestal Stand

Front

Left

C52

(Center)

or

Front
Right

Front
Right

REVEL Performa C52
OWNER’S MANUAL

12

ADJUSTABLE SPIKES

When the C52 is shipped, spikes are attached to the left pad identified in Figure 2. For optimal
sound quality, the spikes can be positioned in the threaded inserts on the bottom of the cabinet.

Both 1.5-inch (38mm) and 2.25-inch (57mm) adjustable spikes are included, allowing for
achievement of the proper tilt angle when the C52 is placed on top of a video monitor as
shown in Figure 6 or a shelf. For best results, the C52 should be tilted so the front of the speaker
is facing directly toward the listener’s ears.

1.5-inch Spike

Rear of C52

Figure 8: Tilting the C52

2.25-inch Spike

Rear of C52

To install and position the spikes:

1. Place the C52 on its side on a soft towel
or carpeted floor.

2. Select the appropriate set of spikes to
create a tilt angle that aligns the tweeter
with the listener’s ears.

• Select the 1.5-inch spikes for a

slight downward tilt as shown on
the left side of Figure 8 (below).

• Select the 2.25-inch spikes for a

greater tilt as shown on the right
side of Figure 8 (below). These
spikes are required for higher
loudspeaker placement.

3. Locate the two threaded inserts on the
bottom of the cabinet. These inserts are
identified on the left side of Figure 9
(next page).

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

5. Repeat step 4 using the other spike and
threaded insert. Make sure the two
spikes are evenly threaded to achieve a
level balance.

6. Place the protective caps over the
round end of the spikes as shown on
the right side of Figure 9 (next page) to
prevent the spikes from scratching the
mounting surface.

7. When both spikes have been inserted,
stand the C52 in the upright position.
If needed, adjust the spikes to achieve
a level balance.

13

MAKING CONNECTIONS

The C52 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:

• Use high-quality loudspeaker cable
with a maximum total loop resistance
of 0.07Ω or less (for each wire run).
Refer to the table in the next column 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 mis-terminate, resulting in
considerable degradation of sound quality.

REVEL Performa C52
OWNER’S MANUAL

Threaded

Inserts

Figure 9: Adjustable Spikes

Round End
(Protective Cap)

Spike End

C52 Cabinet

Mounting

Surface

Threaded

Insert

REVEL Performa C52
OWNER’S MANUAL

14

Making Connections (continued)

• Make all connections observing the
proper polarity, positive-to-positive (+)
and negative-to-negative (–).

• 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.

• The standard connection method uses
a single loudspeaker wire. The C52 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.

• If desired, contact an authorized Revel
dealer for information about the
suitability of power amplifier
components before connecting the C52
to the associated power amplifier.

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

SINGLE-WIRED CONNECTIONS

Single-wired connections are the most
common. These are made between one
pair of C52 input terminals and one power
amplifier output channel as shown in
Figure 10 (below).

To make single-wired connections:

1. Connect one pair of loudspeaker wires
to the desired pair of C52 input
terminals. (The high-frequency input
terminals are recommended.)

2. Connect the same pair of loudspeaker
wires to the desired power amplifier
output channel.

OUTPUT

POWER

AMPLIFIER

C52

On Top Of

Monitor

Flush

Mounted

Stand

Mounted

Placement

Compensation

Low Frequency Input

Remove straps
for bi-wire
or bi-amp

High Frequency Input

High Frequency

Level (dB)

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

Serial No.

-1

+1

+.5

-.5

0

Figure 10: Single-Wired Connections

15

BI-WIRED CONNECTIONS

Bi-wired connections are made between
both pairs of C52 input terminals and one
power amplifier output channel as shown
in Figure 11 (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 C52 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 C52
input terminals. Then connect the
same pair of loudspeaker wires to the
same power amplifier output channel
that was selected in step 2.

VERTICAL BI-AMPLIFIED
CONNECTIONS

Vertical bi-amplified connections are made
between both pairs of C52 input terminals
and two separate power amplifier output
channels. These output channels can be on
one or two power amplifiers. However, if
two power amplifiers are used, these power
amplifiers must be identical. Vertical
bi-amplified connections are shown in
Figure 12 (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.

REVEL Performa C52
OWNER’S MANUAL

OUTPUT

POWER

AMPLIFIER

C52

On Top Of

Monitor

Flush

Mounted

Stand

Mounted

Placement

Compensation

Low Frequency Input

Remove straps
for bi-wire
or bi-amp

High Frequency Input

High Frequency

Level (dB)

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

Serial No.

-1

+1

+.5

-.5

0

Figure 11: Bi-Wired Connections

REVEL Performa C52
OWNER’S MANUAL

16

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 C52 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 C52
input terminals. Then connect the same
pair of loudspeaker wires to a separate
power amplifier output channel.

Note

Vertical bi-amplified connections must be
made using two separate output channels
on one power amplifier or separate output
channels on two identical power amplifiers.

HORIZONTAL BI-AMPLIFIED
CONNECTIONS

Horizontal bi-amplified connections are
made between both pairs of C52 input
terminals and two separate output channels
on two separate power amplifiers. The
high-frequency pair of C52 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 least one power amplifier is
required. Horizontal bi-amplified
connections are shown in Figure 13
(next page).

OUTPUT 1

POWER

AMPLIFIER 1

OUTPUT 2

C52

On Top Of

Monitor

Flush

Mounted

Stand

Mounted

Placement

Compensation

Low Frequency Input

Remove straps
for bi-wire
or bi-amp

High Frequency Input

High Frequency

Level (dB)

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

Serial No.

-1

+1

+.5

-.5

0

Figure 12: Vertical Bi-Amplified Connections

REVEL Performa C52
OWNER’S MANUAL

17

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.

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 C52 input
terminals. Then connect the same pair
of loudspeaker wires to the desired
power amplifier output channel.

C52

On Top Of

Monitor

Flush

Mounted

Stand

Mounted

Placement

Compensation

Low Frequency Input

Remove straps
for bi-wire
or bi-amp

High Frequency Input

High Frequency

Level (dB)

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

Serial No.

-1

+1

+.5

-.5

0

OUTPUT 1

POWER

AMPLIFIER 1

OUTPUT 1

POWER

AMPLIFIER 2

Figure 13: Horizontal Bi-Amplified Connections

3. Connect another pair of loudspeaker
wires to the low-frequency pair of C52
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.

REVEL Performa C52
OWNER’S MANUAL

18

OPTIMIZING
PERFORMANCE

To optimize the C52 for best performance:

1. When the C52 is connected, set the
High Frequency Level switch to 0.
(Different listening rooms may require
other High Frequency Level switch
settings.)

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

• The C52 must be used with at least

an 80Hz crossover.

• Selecting the appropriate crossover

based on accurate in-room response
measurements will result in decreased
distortion, accurate timber, and
increased dynamic capabilities.

• Contact an authorized Revel dealer

for assistance setting the associated
multi-channel controller or receiver
for the appropriate crossover.

3. Set the Placement Compensation
switch to correspond with the C52’s
placement.

• Select the Flush Mounted setting if

the C52 is placed in a bookcase or
wall unit.

• Select the On Top of Monitor

setting if the C52 is placed on top
of a video monitor or mounted on
a shelf.

• Select the Stand Mounted setting if
the C52 is placed on a stand (such
as the optional pedestal stand).

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

• It is recommended to listen to well-

recorded dialogue from more than
one film source, as sound quality
varies from film to film.

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

6. Experiment with the Placement
Compensation switch setting to
compensate for effect of loudspeaker
placement on the C52’s timbre and
overall balance.

Note

Rotating the Placement Compensation
switch counterclockwise increases low­frequency output.

7. If desired, experiment with the High
Frequency Level switch to change high­frequency balance and timbre.

19

REVEL Performa C52
OWNER’S MANUAL

LOUDSPEAKER VOLUME LEVELS

High-order filters include steep cut-offs to
reduce potential damage from “out-of-band”
frequencies. Combined with carefully
selected transducers and filter network
components, this approach helps the C52
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.

Note

• Refer to step 2 on the previous page for
information about C52 crossover
requirements.

• If desired, contact an authorized Revel
dealer for information about the suitability
of power amplifier components before
connecting the C52 to the associated
power amplifier.

REVEL Performa C52
OWNER’S MANUAL

20

SPECIFICATIONS

DIMENSIONS & WEIGHT

Width: 24.63 inches (62.56cm)

Height: 10.88 inches (27.64cm)

Depth: 10.56 inches (26.82cm) with

grille

9.25 inches (23.50cm) without
grille

Weight: 40.75 pounds (18.48kg) with

grille
40 pounds (18.14kg) without

grille

DefinitionSpecification Value

Sensitivity

Impedance

• 90dB SPL with 2.83
Vrms @ 1 meter (4 pi
anechoic)

•6Ω (nominal)

• 3.1Ω (minimum @
292Hz)

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 3.1Ω allows a reasonably designed power
amplifier to drive Revel loudspeakers.

Filter Network

• Three-way, high-order
acoustic response @
235Hz and 2kHz

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
feature point-to-point hand-wiring 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 60Hz to
20kHz

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.

Specifications are subject to change without notice.

21

REVEL Performa C52
OWNER’S MANUAL

DefinitionSpecification Value

In-Room Response

• ±0.5dB from 70Hz 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 70Hz 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 65Hz 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

Specifications are subject to change without notice.

• –10dB @ 36Hz

• –6dB @ 49Hz

• –3dB @ 60Hz

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 (continued)

OBTAINING SERVICE

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

REVEL Performa C52
OWNER’S MANUAL

22

INDEX

A–C

about the C52 5–6
adjustable spikes 5, 7, 8, 11,

12–13

bi-amplified connections 5, 8,

10, 13, 14, 15–20

bi-wired connections 5, 8, 10,

13, 14, 15, 20

binding posts 5, 8, 10, 13 (see

also input terminals)

C52, about the 5–6
cabinet 5, 6, 7, 8, 11, 12
care and maintenance 8
CAUTION 4, 8, 11, 13, 19
cones 5
connections

bi-amplified 5, 8, 10, 13, 14,

15, 16, 17, 20

bi-wired connections 5, 8,

10, 13, 14, 15, 20

horizontal bi-amplified

connections 14, 16–17
making 13–17
single-wired connections 5,

8, 10, 13, 14, 20
vertical bi-amplified

connections 14, 15–16

CRT video monitors 10

D–G

dimensions 20
documentation conventions 4
driver complement 6, 8
filter network 5, 8, 13, 19, 20
first reflections response 21
flush mounted 9, 11, 18
frequency response 5
grille 5, 7, 8, 20

H–I

high frequency level switch

5, 8, 10, 18

high-frequency input terminals

10, 14, 15, 16, 17

highlights, C52 6
horizontal bi-amplified

connections 14, 16–17
impedance 20
in-room response 18, 21
input panel 9–10
input terminals

high-frequency 10, 14, 15,

16, 17

low-frequency 10, 15, 16, 17

(see also binding posts)

L–M

listening room acoustics 5, 8,

10

listening window response 21
loudspeaker overview 8–10
loudspeaker placement

about 5, 8, 9, 10–12, 18

flush mounted 9, 11, 18

on top of monitor 5, 8, 9,

11, 12, 18

stand mounted 9, 11, 18

loudspeaker volume levels 19
loudspeaker wires 14, 15, 16,

17

low-frequency extension 21
low-frequency response 21
low-frequency input terminals

10, 15, 16, 17

making connections 13–17
maximum wire gauge 13
midrange 5, 8, 20
motor structure 5

N–P

Note 4, 6, 7, 9, 10, 13, 15, 16,

17, 18, 19

obtaining service 21
off-axis response 5, 8
on top of monitor 9, 11, 18
on-axis response 21
optimizing performance

18–19

packing materials 6, 7
placement compensation

switch 5, 8, 9, 10, 11, 18

power amplifiers 10, 13, 14,

15, 16, 17, 19, 20

preamplifiers 14, 15, 17
product registration 6

S–W

safety information 4, 8, 11,

13, 19

sensitivity 20
shorting straps 5, 8, 10, 13,

15, 16, 17

single-wired connections 5, 8,

10, 13, 14, 20

specifications 20–21
spikes, adjustable 5, 7, 8, 11,

12–13

stand mounted 9, 11, 18
table of contents 3
target response 20
tweeter 5, 8, 10, 12, 20
unpacking 6–7
vertical bi-amplified

connections 14, 15–16
warranty card 6, 21
weight 20
wire gauge, maximum 13
woofers 5, 8, 20

23

REVEL Performa C52
OWNER’S MANUAL

NOTES

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

Customer Support: Telephone: [phone] | Sales Fax: [phone] | Ser vice Fax: [phone]

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Part No. 353735-001 | Rev A | 02/05