W Audio MCA-4 Operation Manual
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4-channel pro amplifier
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MCA-4
OPERATION MANUAL
4-channel amplifier
MCA-4
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.
www.prolight.co.uk
page 2 Operation Manual
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 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, 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 power supply
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) To reduce the risk of fire or electric shock, do
not expose this apparatus to rain or moisture.
TO PREVENT ELECTRIC SHOCK DO NOT REMOVE
TOP OR BOTTOM COVERS. NO USER SERVICEABLE
PARTS INSIDE. REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
MAGNETIC FIELD
CAUTION! Do not locate sensitive highgain equipment such as
preamplifiers or tape decks dirctly 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 aboveand
below the unit.
If an equipment rack is used, we recommend locating the amplifier(s)
in the bottom of the rack and the preamplifier or other sensitive
equipment at the top.
WATCH FOR THESE SYMBOLS:
The exclamation point triangle is used to alert theuser to important
operating or maintenance instructions.
The lightning bolt triangle is used to alert the user to the risk of
electric shock.
Important Safety Instructions
4-channel amplifier
Operation Manual page 3
CE Declaration of Conformity
Equipment Type: Audio Power Amplifiers
Model Names: MCA-4
This product has been assessed against the following applicable Standards,
EMC (89/336/EEC Electromagnetic compatibility):
EN55013:2001 Sound and television broadcast receivers and associated equipment - Radio disturbance characteristics - Limits and methods of measurement
EN 55020:2002 Sound and television broadcast receivers and associated equipment - Immunity characteristics - Limits and methods of measurement
EN 61000-3-2:2000
Part 3-2: Limits - Limits for harmonic current emissions (equipment input current up to and including 8 A per phase)
EN 61000-3-3:1995
Part 3-3: Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current 8 A per
phase and not subject to conditional connection
LVD (73/23/EEC Low Voltage Directive)
EN60065:2002 Audio, Video and similar electronic-safety requirements.
4-channel amplifier
page 4 Operation Manual
Table of Contents
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 .........................................7
2.6 Wire Your System ...................................................................8
2.6.1 4-Channel Mode .......................................................................8
2.6.2 Stereo+Sub Mode.....................................................................9
2.6.3 Bridge-Stereo Mode ...........................................................10
2.6.4 4-Channel Mode When BUS IN Mode .............................................................11
2.6.5 Limiter ................................................................11
2.7 Connect to AC Mains ..............................................................................12
2.8 Startup Procedure ........................................................................ 12
3 Operation ........................................................................ 13
3.1 Precautions ........................................................................ 13
3.2 Front Panel Controls and Indicators ...................................... 14
3.3 Back Panel Controls and Connectors...................................... 14
4 Specifications ...............................................15
4-channel amplifier
SIGNAL
CLIP
BRIDGE
SIGNAL
CLIP
PROTECT
CH3
SIGNAL
CLIP
BRIDGE
SIGNAL
CLIP
PROTECT
POWER
4-channel pro amplifier
BASS
TREBLE
-10 +10 -10 +10
BASS
TREBLE
-10
+10 -10 +10
BASS
TREBLE
-10 +10 -10 +10
BASS
TREBLE
-10 +10 -10 +10
dB
0
8
dB
0
8
dB
0
8
dB
0
8
-
ON
OFF
ACTIVE
CH1 CH2 CH4
I
O
MCA-4
4-ohm 4x300W
8-ohm Bridge-Stereo 2x600W
*1KHz Power:refers to maximum average power in
watts at 1KHz with 1.0% THD.
MCA-4
1 Welcome
The MCA-4 Series of power amplifiers from
represents a new era in affordable,
quality power amplification. This model is in
a uniform, rugged chassis, incorporating the
best of tried-and-true tested design principles
and innovative features.
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, MCA-4 includes 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.
Operation Manual page 5
1.1 Features
Independent Bass and Treble control for
each channel.
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.
We strongly recommend you read all instructions,
warnings and cautions contained in this manual.
4-channel amplifier
Three power configerations; four channel
4 X 300W, 3 channel 2 X 300W + 1 X 600W
or 2 channel 2 X 600W.
Individual four channel inputs and switchable
global bus input.
Independent volume control for 4 channels,
recessed Treble and Bass control, independent
signal indication, independent clip indication.
Bridge mode switch for channel 1& 2 and channel
3& 4, bridge and common protection LED indicators.
Balanced BUS IN available.
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