MCA Series
Multi-Channel
Amplifiers
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
1) |
Read these instructions. |
10) Protect the power cord from being |
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2) |
Keep these instructions. |
walked on or pinched particularly at plugs, |
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convenience receptacles, and the point |
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3) |
Heed all warnings. |
where they exit from the product. |
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4) |
Follow all instructions. |
11) Only use attachments/accessories |
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5) |
Do not use this product near water. |
specified by the manufacturer. |
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6) |
Clean only with dry cloth. |
12) Use only with equipment rack, cart, |
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stand or table designed to provide adequate |
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7) |
Do not block ventilation openings. |
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mechanical strength, heat dissipation and |
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Install in accordance with the |
securement to the building structure. |
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manufacturer’s instructions. |
When a cart is used, use |
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8) |
Do not install near any heat |
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caution when moving the cart |
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sources such as radiators, heat |
and product combination to |
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registers, stoves, or other product |
avoid injury from tip-over. |
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(including amplifiers) that produce |
13) Unplug this product during lightning |
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heat. |
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storms or when unused for long periods of |
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9) |
Do not defeat the safety purpose of |
time. |
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the grounding-type plug. A grounding |
14) Refer all servicing to qualified service |
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type plug has two blades and a third |
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personnel. Servicing is required when the |
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grounding prong. |
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product has been damaged in any way, such |
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The third prong is provided for your |
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as power-supply cord or plug is damaged, |
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safety. If the provided plug does not |
liquid has been spilled or objects have fallen |
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fit into your outlet, consult an |
into the product, the product has been |
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electrician for replacement of the |
exposed to rain or moisture, does not |
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obsolete outlet. |
operate normally, or has been dropped. |
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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 and the operation manual may 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.
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TABLE OF CONTENTS
MCA SERIES MULTI-CHANNEL AMPLIFIERS FEATURES. . . . . . . . . . . . . . . .4
FRONT PANEL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 |
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REAR PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 |
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BRIDGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 |
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SPECIFICATIONS. |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 |
WARRANTY . . . . . . |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 |
EC DECLARATION. |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 |
SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
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MCA MULTI-CHANNEL AMPLIFIERS
MCA Series Multi-Channel Amplifiers provide eight channels of power amplification. 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 amplifiers are covered by Biamp Systems’ five-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 filter switches • Amplifier outputs on screw-terminal connectors
• Dual-color signal/peak indicators on front & rear panels • Front panel indicators for amplifier 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 Certified
• Covered by Biamp Systems’ five-year warranty
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FRONT PANEL
MCA 8050 Front Panel
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MCA 8050 |
signal |
temp |
signal |
temp |
signal |
temp |
signal |
temp |
signal |
temp |
signal |
temp |
signal |
temp |
signal |
temp |
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peak |
fault |
peak |
fault |
peak |
fault |
peak |
fault |
peak |
fault |
peak |
fault |
peak |
fault |
peak |
fault |
on |
Channel 1 |
Channel 2 |
Channel 3 |
Channel 4 |
Channel 5 |
Channel 6 |
Channel 7 |
Channel 8 |
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MCA 8150 Front Panel
MCA 8150
signal |
temp |
signal |
temp |
signal |
temp |
signal |
temp |
signal |
temp |
signal |
temp |
signal |
temp |
signal |
temp |
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peak |
fault |
peak |
fault |
peak |
fault |
peak |
fault |
peak |
fault |
peak |
fault |
peak |
fault |
peak |
fault |
on |
Channel 1 |
Channel 2 |
Channel 3 |
Channel 4 |
Channel 5 |
Channel 6 |
Channel 7 |
Channel 8 |
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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 flashing, 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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