Biamp MCA 8150, MCA 8050 User Manual
MCA Series
Multi-Channel
Ampliers
Operation Manual
February 2012
Biamp Systems, 9300 SW Gemini Drive, Beaverton, Oregon 97008 U.S.A. (503) 641-7287 www.biamp.com
IMPORTANT SAFETY INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
1) Read these instructions.
2) Keep these instructions.
3) Heed all warnings.
4) Follow all instructions.
5) Do not use this product near water.
6) Clean only with dry cloth.
7) Do not block 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 product
(including amplifiers) that produce
heat.
9) Do not defeat the safety p
the grounding-type plug. A grounding
type plug has two blades and a third
grounding prong.
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.
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ose of
10) Protect the power cord from being
walked on or pinched particularly at plugs,
convenience receptacles, and the point
where they exit from the product.
11) Only use attachments/accessories
fied by the manufacturer.
eci
sp
12) Use only with equipment rack, cart,
stand or table designed to provide adequate
mechanical strength, heat dissipation and
securement to the building structure.
When a cart is used, use
caution when moving the cart
and product combination to
avoid injury from tip-over.
13) Unplug this product during lightning
storms or when unused for long periods of
time.
14) Refer all servicing to qualified service
Servicing is required when the
personne
product 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 product, the product has been
exposed to rain or moisture, does not
operate normally, or has been dropped.
l.
WARNING - To reduce the risk of fire or electric shock, do not expose this product to rain or
moisture.
WARNING - This product employs Safety Grounding and must be connected to a MAINS
socket that is properly grounded to provide a protective eathing connection.
Disconnect Device - The MAINS plug is used to disconnect MAINS power and must be
installed near the equipment and remain readily accessible.
Explanation of safety related symbols - Product labeling a
use the internationally recognized symbols defined below to note safety messages.
Lightning Bolt: Hazardous Live voltages present when this unit is in operation. Do
not touch terminals marked with this symbol while the unit is connected to live power.
Exclamation Point: Replace components (i.e. fuses) only with the values specified by
the manufacturer. Failure to do so will compromise safe operation of this unit.
nd the operation manual may
2
TABLE OF CONTENTS
MCA SERIES MULTI-CHANNEL AMPLIFIERS FEATURES ...............4
FRONT PANEL .....................................................5
REAR PANEL ......................................................6
BRIDGING ........................................................9
SPECIFICATIONS ................................................ 10
WARRANTY ..................................................... 11
EC DECLARATION ................................................ 12
SAFETY INFORMATION .......................................... 13
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MCA MULTI-CHANNEL AMPLIFIERS
MCA Series Multi-Channel Ampliers provide eight channels of power amplication. Model MCA
8050 delivers 50 watts/channel into 4 ohms. Model MCA 8150 delivers 150 watts/channel into 4
ohms. Channels may be bridged in pairs for higher combined wattage. MCA Series ampliers are
covered by Biamp Systems’ ve-year warranty.
FEATURES:
• 8 channels of 50W (MCA 8050) or 150W (MCA 8150)
• Channels may be bridged in pairs for combined power
• Balanced line-level inputs on plug-in barrier strips
• Rear panel level controls & high-pass lter switches
• Amplier outputs on screw-terminal connectors
• Dual-color signal/peak indicators on front & rear panels
• Front panel indicators for amplier temp/load faults
• Fan cooled with complete output/speaker protection
• Optional transformers for 25/70/100 Volt systems
• Incorporates AES recommended grounding practices
• CE marked and UL / C-UL listed
• CCC Certied
• Covered by Biamp Systems’ ve-year warranty
4
MCA 8050 Front Panel
signal
temp
signal
peak
Channel 1
fault
peak
Channel 2
temp
fault
MCA 8150 Front Panel
signal
temp
signal
peak
Channel 1
fault
peak
Channel 2
temp
fault
signal
peak
Channel 3
signal
peak
Channel 3
temp
fault
temp
fault
signal
peak
Channel 4
signal
peak
Channel 4
temp
fault
temp
fault
FRONT PANEL
signal
temp
signal
temp
peak
Channel 5
signal
peak
Channel 5
fault
temp
fault
peak
Channel 6
signal
peak
Channel 6
fault
temp
fault
signal
peak
Channel 7
signal
peak
Channel 7
temp
fault
temp
fault
signal
temp
peak
fault on
Channel 8
signal
temp
peak
fault on
Channel 8
MCA 8050
MCA 8150
Signal / Peak Indicators
These 2-color LEDs indicate the signal level for each channel. When an LED is green, that channel
has signal (above -30dB). When an LED is red, that channel signal is clipping (max. power).
CAUTION: Signal levels should be adjusted to avoid clipping. Clipping can cause severe distortion,
over-temperature conditions, and even loudspeaker damage.
NOTE: Signal / Peak indicators will turn off during Temp / Fault conditions (see Temp / Fault
Indicators below).
Temp / Fault Indicators
These red LEDs indicate over-temperature and output fault conditions for each channel. When an
LED remains lit, that channel has an over-temperature condition. When an LED is ashing, that
channel has an output fault condition. Either condition will temporarily de-activate the channel,
causing the Signal / Peak LED to turn off as well. The channel will attempt to self-reset once the
over-temperature or output fault condition is resolved.
On Indicator
This green LED remains lit when AC power is applied to the unit.
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