Crown S-2, S-3 Owners manual
Operation Manual
S-Series
S-2
S-3
Obtaining Other Language Versions:
local Crown Distributor. If you need assistance locating your local distributor, please contact Crown at 574-294-8000.
This manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover every possible
situation which may arise during installation, operation or maintenance.
The information provided in this manual was deemed accurate as of the publication date. However, updates to this information may have
To obtain the latest version of this manual, please visit the Crown website at www.crownaudio.com.
occurred.
Trademark Notice:
property of their respective owners.
©2005 by Crown Audio® Inc., 1718 W. Mishawaka Rd., Elkhart, IN 46517-9439 U.S.A. Telephone: 574-294-8000
Crown, Crown Audio, and Amcron are registered trademarks of Crown International. Other trademarks are the
To obtain information in another language about the use of this product, please contact your
Some models may be exported under the name Amcron.
®
126941-3A
6/05
Important Safety Instructions
S-Series Power Amplifiers
1) Read these instructions.
2) Keep these instructions.
3) Heed all warnings.
4) Follow all instructions.
5) Do not use this apparatus near water.
6) Clean only with a dry cloth.
7) Do not block any ventilation openings. Install
in accordance with the manufacturer’s instructions.
8) Do not install near any heat sources such as
radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce
heat.
9) Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug
has two blades with one wider than the other.
A grounding-type plug has two blades and a
third grounding prong. The wide blade or the
third prong is provided for your safety. If the
provided plug does not fit into your outlet,
consult an electrician for replacement of the
obsolete outlet.
10) Protect the power cord from being walked on
or pinched, particularly at plugs, convenience
receptacles, and the point where they exit from
the apparatus.
11) Only use attachments/accessories specified
by the manufacturer.
12) Use only with a cart, stand, tripod, bracket, or
table specified by the manufacturer, or sold
with the apparatus. When a cart is used, use
caution when moving the cart/apparatus combination to avoid injury from tip-over.
13) Unplug this apparatus during lightning storms
or when unused for long periods of time.
14) Refer all servicing to qualified service personnel. Servicing is required when the apparatus
has been damaged in any way, such as powersupply cord or plug is damaged, liquid has
been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to
rain or moisture, does not operate normally,
or has been dropped.
15) WARNING: TO REDUCE THE RISK OF FIRE
OR ELECTRIC SHOCK, DO NOT EXPOSE
THIS APPARATUS TO RAIN OR MOISTURE.
16) DO NOT EXPOSE TO DRIPPING OR SPLASHING. DO NOT PLACE OBJECTS FILLED WITH
LIQUID, SUCH AS VASES,ON THIS APPARATUS.
TO PREVENT ELECTRIC SHOCK DO NOT REMOVE
TOP OR BOTTOM COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
À PRÉVENIR LE CHOC ÉLECTRIQUE N’ENLEVEZ
PAS LES COUVERCLES. IL N’Y A PAS DES PARTIES SERVICEABLE À L’INTÉRIEUR. TOUS REPARATIONS DOIT ETRE FAIRE PAR PERSONNEL
QUALIFIÉ SEULMENT.
TO COMPLETELY DISCONNECT THIS EQUIPMENT
FROM THE AC MAINS, DISCONNECT THE POWER
SUPPLY CORD PLUG FROM THE AC RECEPTACLE. THE MAINS PLUG OF THE POWER SUPPLY
CORD SHALL REMAIN READILY OPERABLE.
WATCH FOR THESE SYMBOLS:
The lightning bolt triangle is used to alert the user
to the risk of electric shock.
The exclamation point triangle is used to alert the
user to important operating or maintenance instructions.
IMPORTANT
S Series amplifiers require Class 2 output
wiring.
MAGNETIC FIELD
CAUTION! Do not locate sensitive high-gain equipment such as preamplifiers or tape decks directly
above or below the unit. Because this amplifier has
a high power density, it has a strong magnetic field
which can induce hum into unshielded devices that
are located nearby. The field is strongest just above
and below the unit.
If an equipment rack is used, we recommend locating the amplifier(s) in the bottom of the rack and the
FCC COMPLIANCE NOTICE
This device complies with part 15 of the FCC rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation.
CAUTION: Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
page 2
Operation Manual
S-Series Power Amplifiers
Crown International, Inc.
Issued By: Crown International, Inc.
1718 W. Mishawaka Road
Elkhart, Indiana 46517 U.S.A.
Equipment Type: Commercial Audio Power Amplifiers
Family Name: S-Series
Model Names: S-2, S-3
EMC Standards:
EN 55103-1:1995 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 1: Emissions
EN 55103-1:1995 Magnetic Field Emissions-Annex A @ 10 cm and 1 M
EN 61000-3-2:1995+A14:2000 Limits for Harmonic Current Emissions (equipment input current ≤16A per phase)
EN 61000-3-3:1995 Limitation of Voltage Fluctuations and Flicker in Low-Voltage Supply Systems Rated Current ≤16A
EN 55022:1992 + A1: 1995 & A2:1997 Limits and Methods of Measurement of Radio Disturbance Characteristics of ITE: Radiated, Class B Limits; Conducted, Class B
EN 55103-2:1996 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 2: Immunity
EN 61000-4-2:1995 Electrostatic Discharge Immunity (Environment E2-Criteria B, 4k V Contact, 8k V Air Discharge)
EN 61000-4-3:1996 Radiated, Radio-Frequency, Electromagnetic Immunity (Environment E2, criteria A)
EN 61000-4-4:1995 Electrical Fast Transient/Burst Immunity (Criteria B)
EN 61000-4-5:1995 Surge Immunity (Criteria B)
EN 61000-4-6:1996 Immunity to Conducted Disturbances Induced by Radio-Frequency Fields (Criteria A)
EN 61000-4-11:1994 Voltage Dips, Short Interruptions and Voltage Variation
Safety Standard:
EN 60065: 1998 Safety Requirements - Audio Video and Similar Electronic Apparatus
I certify that the product identified above conforms to the requirements of the EMC Council Directive 89/336/EEC as amended by 92/31/EEC, and the Low Voltage Directive 73/23/EES as amended by 93/68/EEC.
Signed
Larry Coburn
Title: Senior Vice President of Manufacturing
DECLARATION of CONFORMITY
Technical Construction File Route
FOR COMPLIANCE QUESTIONS ONLY:
Sue Whitfield
574-294-8289
swhitfield@crownintl.com
European Representative's Name and Address:
Nick Owen
35, Bassets Field
Thornhill
Cardiff. South Glamorgen
CF14 9UG United Kingdom
Date of Issue: March 28, 2000
Operation Manual
page 3
Table of Contents
S-Series Power Amplifiers
Important Safety Instructions .......................................................2
Declaration of Conformity ...........................................................3
1 Welcome .................................................... 5
1.1 Features .........................................................................5
1.2 How to Use This Manual ................................................5
2 Setup ......................................................... 6
2.1 Unpack Your Amplifier ....................................................6
2.2 Install Your Amplifier ......................................................6
2.3 Ensure Proper Cooling ....................................................6
2.4 Choose Input Wire and Connectors ................................. 7
2.5 Choose Output Wire and Connectors ..............................8
2.6 Wire Your System ...........................................................9
2.6.1 Stereo Mode ...........................................................9
2.6.2 How to Parallel the Inputs .......................................9
2.6.3 Bridge-Mono Mode ................................................10
2.7 Input Sensitivity Switch ................................................... 11
2.8 Connect to AC Mains ......................................................11
2.9 Startup Procedure ...........................................................11
3 Operation .................................................... 12
3.1 Precautions .....................................................................12
3.2 Controls, Indicators and Connectors ...............................13
3.3 Front Panel Controls and Indicators ................................14
3.4 Back Panel Controls ........................................................14
4 Advanced Features and Options ......................... 15
4.1 Protection Systems .........................................................15
4.1.1 Bias Servo ..............................................................15
4.1.2 Fault .......................................................................15
4.1.3 Ultrasonic and Radio Frequency Protection ............15
4.1.4 Drive Protection.......................................................15
4.1.5 Compression ..........................................................15
4.1.6 Power Circuit Breaker .............................................15
4.1.7 Proportional-speed Fan ..........................................15
4.2 Advanced Features ..........................................................15
4.2.1 Crown SST Modules ..............................................15
4.2.2 Fault Monitoring .....................................................17
4.3 Options ............................................................................18
4.3.1 Accessories ............................................................18
4.3.2 Alternate Output Connectors ...................................18
4.3.3 Tamper-Resistant Hole Plugs .................................18
4.3.4 Optional 0.775 V Input Sensitivity Setting ..............18
5 Principles of Operation ................................... 19
6 Troubleshooting ............................................ 21
7 Specifications .............................................. 22
8 Service ....................................................... 23
9 Warranty ..................................................... 24
Crown Factory Service Information Form ....................................27
page 4
Operation Manual
S-Series Power Amplifiers
1 Welcome
Crown® S-Series amplifiers provide professional audio amplification for a wide range of
applications, including digital cinema. The
amplifiers are very affordable, and feature frontpanel controls for easy setup and use. They can
be removed for security.
Modern power amplifiers are sophisticated
pieces of engineering capable of producing
extremely high power levels. They must be
treated with respect and correctly installed if
they are to provide the many years of reliable
service for which they were designed.
In addition, S-Series amplifiers include a number of features which require some explanation
before they can be used to their maximum
advantage.
Please take the time to study this manual so
that you can obtain the best possible service
from your amplifier.
1.1 Features
• Accurate, undistorted sound.
• Bridge-mono/stereo mode switch allows
you to set up your amps/speakers in the
configuration that best suits your needs.
• Versatile; handles a wide range of speaker
impedances and outputs.
• Advanced protection circuitry guards
against shorted outputs, open circuits, DC,
mismatched loads, general overheating,
high-frequency overloads and internal
faults.
• Genuine Neutrik
• Choice of 1/4-inch, XLR or barrier strip
inputs.
• Removable front-panel level control
knobs.
• Selectable input sensitivity.
• Proportional-speed fan optimizes cooling
efficiency.
• Can be mounted in EIA standard 19-in.
(48.3-cm) rack, shallow 14-in. (35.5) rack,
or stacked on top of each other.
• Three Year, No-Fault, Fully-Transferable
Warranty completely protects your investment and guarantees its specifications.
®
Speakon® connectors.
1.2 How to Use This Manual
This manual provides you with the necessary
information to safely and correctly setup and
operate your amplifier. It does not cover every
aspect of installation, setup or operation that
might occur under every condition. For additional information, please consult Crown’s
Amplifier Application Guide (available online at
www.crownaudio.com), Crown Technical Support, your system installer or retailer.
We strongly recommend you read all instructions, warnings and cautions contained in this
manual. Also, for your protection, please send
in your warranty registration card today. And
save your bill of sale — it’s your official proof
of purchase.
Operation Manual
page 5
2 Setup
S-Series Power Amplifiers
2.1 Unpack Your Amplifier
Please unpack and inspect your amplifier for
any damage that may have occurred during
transit. If damage is found, notify the transportation company immediately. Only you can initiate a claim for shipping damage. Crown will
be happy to help as needed. Save the shipping
carton as evidence of damage for the shipper’s
inspection.
We also recommend that you save all packing
materials so you will have them if you ever
need to transport the unit. Never ship the
unit without the factory pack.
YOU WILL NEED (not supplied):
• Input wiring cables
• Output wiring cables
Rack and rack-mounting hardware for mount-
ing amplifier (or a stable surface for stacking)
WARNING: Before you start to set up
your amplifier, make sure you read and
observe the Important Safety Instructions found at the beginning of this
manual.
2.2 Install Your Amplifier
CAUTION: Before you begin, make sure
your amplifier is disconnected from the
power source, with power switch in the
“off” position and all level controls
turned completely down (counterclockwise).
Use a standard 19-inch (48.3 cm) equipment
rack. See Figure 2.1 for amplifier dimensions.
You may also stack amps without using a
cabinet.
NOTE: When transporting, amplifiers should be
supported at both front and back.
2.3 Ensure Proper Cooling
When using an equipment rack, mount units
directly on top of each other. Close any open
spaces in rack with blank panels. DO NOT
block front or rear air vents. The side walls of
the rack should be a minimum of 2 inches (5.1
cm) away from the amplifier sides, and the back
of the rack should be a minimum of 4 inches
(10.2 cm) from the amplifier back panel.
Figure 2.2 illustrates standard amplifier airflow.
page 6
Figure 2.2 Airflow
Figure 2.1 S2 and S3 Dimensions
Operation Manual
S-Series Power Amplifiers
2 Setup
2.4 Choose Input Wire
and Connectors
You have three choices of input connectors:
1/4-inch (6.35-mm) phone, 3-pin XLR, or
barrier strip. You can also use either balanced or
unbalanced wiring.
Figure 2.3 shows balanced connector pin
assignments for XLR and phone. Figure 2.4
shows unbalanced connector pin assignments
for XLR and phone.
Figure 2.5 shows barrier strip input wiring for a
balanced signal. Both channels should be wired
using a common center terminal for ground connection.
NOTE: Custom wiring should only be
performed by qualified personnel.
Figure 2.3 Balanced Input
Connector Wiring
Figure 2.4 Unbalanced Input
Connector Wiring
Operation Manual
Figure 2.5 Barrier Strip Input Wiring:
Balanced Signal In
page 7
2 Setup
2.5 Choose Output Wire and Connectors
Crown recommends using pre-built or professionally wired, high-quality, two- or four-conductor, heavy gauge speaker wires. They should
be terminated with Neutrik Speakon NL4FC connectors (Figure 2.6) at one end and appropriate
connectors to fit your speakers at the other end.
If your S-Series amplifier came equipped with
the CEAS1 (barrier strip) or CEAS2 (5-way binding post) optional output connectors, you may
wire your output to these connectors instead.
Optional output connectors can also be ordered
as a Service Option for installation on existing
S-Series amplifiers.
If the CEAS1 Output Module is installed, use terminal forks or bare wire for your output connectors (see Figure 2.7).
To prevent the possibility of short-circuits, replace the cover on the barrier
strip after completing the output wiring.
If the CEAS2 Output Module is installed, connect
to it with bare wires, spade lugs or banana plugs
on the speaker cables (Figure 2.8).
Using the guidelines below, select the appropriate size of wire based on the distance from
amplifier to speaker.
Distance Wire Size
up to 25 ft. 16 gauge
26-40 ft. 14 gauge
41-60 ft. 12 gauge
61-100 ft. 10 gauge
101-150 ft. 8 gauge
151-250 ft. 6 gauge
S-Series Power Amplifiers
Figure 2.6 Neutrik® Speakon® Connector
Figure 2.7 Output Connector Wiring for Stereo
with Optional CEAS1 Output Module.
page 8
CAUTION: Never use shielded cable for
output wiring.
Figure 2.8 Optional CEAS2 5-way Binding Post Output Connector (Left)
Each Pair of Posts Connects to a Dual Banana Plug (Right)
Operation Manual
S-Series Power Amplifiers
2 Setup
2.6 Wire Your System
2.6.1 Stereo Mode
Make sure the amplifier is turned off and the
level controls are turned down before you wire
the system.
Typical input and output wiring is shown in
Figure 2.9.
INPUTS: Connect input wiring for each channel.
OUTPUTS: Maintain proper polarity (+/–) on
output connectors.
Connect Channel-1 positive (+) speaker load to
Channel-1 positive terminal of amp; repeat for
negative (–). Repeat each channel wiring as for
Channel 1. Refer to Section 3.5 for output connector pin assignments. Make sure the Mode
switch is set to the “Stereo” position when operating in Stereo mode.
2.6.2 How to Parallel the Inputs
There are three ways to feed the same signal to
each amplifier channel:
1. Buy a "Y" cable. Plug the female end into your
signal cable, and plug the split male ends into
both amplifier inputs.
2. Feed your signal to the Channel-1 input
(either barrier-block or combo). Connect a
jumper wire (Figure 2.10) between the barrierblock Channel-1 (+) screw terminal and the
Channel-2 (+) screw terminal. Connect another
jumper wire between the Channel-1 (–) screw
terminal and the Channel-2 (–) screw terminal.
3. Feed your signal to the Channel-1 input screw
terminals. Using a mic cable or phone-to-phone
cable, connect Channel-1 combo jack to Channel-2 combo jack.
See the next page for Bridge-Mono wiring.
Figure 2.9 Typical System Wiring, Stereo Mode
Figure 2.10
Jumper Placement
to Parallel the Inputs
Operation Manual
page 9
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