CPA 650
Power Amplifier
Operation Manual
Biamp Systems | 9300 S.W. Gemini Drive | Beaverton, OR | 97008 | USA | +1.503.641.7287 | www.biamp.com
lank
TABLE OF
CONTENTS
Safety Information
Front Panel Features
Rear Panel Features
70V Mono-Bridge Output
Precautions
Specifications
Warranty
Declaration of Conformity
b
CPA650
pg. 2 pg. 6 pg. 7 pg. 8 pg. 9 pg. 10 pg. 11 pg. 12
CPA650
INTRODUCTION
CPA650 dual channel power amplifiers are designed to supply reliable service in permanent installations. CPA650 amplifiers have complete overload, short-circuit, and thermal protection, with automatic reset. Barrier strip input and 5way binding post output connectors provide trouble free, dependable connections. CPA650 amplifiers are passively cooled for quiet operation, without fan noise or filter maintenance. CPA650 amplifiers are CE marked, UL listed, and covered by a five-year warranty.
CPA650 features include:
♦ balanced inputs on barrier strip terminals
♦ 325 watts/channel @ 4 ohms (stereo)
♦ 200 watts/channel @ 8 ohms (stereo)
♦ 650 watts @ 8 ohms (mono bridge)
♦ peak indicators on each channel
♦ detented level controls (front or rear mounting)
♦ turn-on muting to prevent "thumping"
♦ recessed ground lift switch to eliminate ground loops
♦ recessed mono bridge switch
♦ passively cooled (no fan noise or maintenance)
♦ covered by Biamp Systems' five-year warranty
♦ CE marked and UL listed
IMPORTANT SAFETY INSTRUCTIONS
Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with a dry cloth.
Do not block any of the ventilation openings.
Install in accordance with the manufacturers instructions.
WARNING - To reduce the risk of electric shock, do not expose this apparatus to rain or moisture.
The apparatus shall not be exposed to dripping or splashing and no objects, such as vases, shall be placed on the apparatus.
Unplug this apparatus during lightning storms or when unused for long periods of time.
Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
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 are provided for your safety. When the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
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.
Use only attachments/accessories specified by the manufacturer.
Use only with the 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.
Unplug this apparatus during lightning storms or when unused for long periods of time.
The appliance inlet shall be readily operable once installed.
WARNING - Terminals marked with the following symbol are Hazardous. Connections to these teminals must be made by qualified personnel.
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3
4
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FRONT PANEL FEATURES
Channel Peak Indicators: These red LED indicators will light when their respective channel amplifiers have reached maximum output.
To avoid clipping distortion, and to protect speakers from being damaged, reduce the input level until the Peak Indicator no longer lights.
Channel Level Control Mounting Holes: These holes are provided for optional front panel mounting of the Channel Level Controls (see
Channel Level Controls on page 7). NOTE: Relocation of Channel Level Controls must be performed by trained service personnel only.
Power Indicator: This green LED indicator will light when AC power is applied to the unit (see Precautions on page 9).
AC Power Switch: This switch applies AC power to the unit (see Precautions on page 9).
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REAR PANEL FEATURES
AC Power Entrance: This receptacle accepts the detachable AC Power Cord. The AC Power Cord is for connection to three-prong grounded AC outlets. CAUTION: Do not remove or defeat the ground prong on the AC Power Cord, as this constitutes a shock hazard.
The Fuse Clip may be removed by first detaching the AC Power Cord, then prying the Fuse Clip out from above, using a flat-blade screwdriver in the notch provided. The Fuse Clip contains the standard fuse for the selected AC operational voltage. The standard fuse is held in the clip, and becomes the actual AC fuse when the Fuse Clip is installed. Replace the standard fuse only with the same value and type. For ~115 VAC operation, use a T 10A L 250V fuse. For ~230 VAC operation, use a T 5A L 250V fuse.
Voltage Selector Switch: For 115 VAC operation, slide until 115V is displayed. For 230 VAC operation, slide until 230V is displayed.
Channel Level Controls: These controls adjust the input signal level for each channel. After setting appropriate levels at the signal source, then adjust the Channel Level Controls for the desired output volume from the CPA650. In mono-bridge mode, Channel 1 becomes the active input and Channel 2 input is inactive. As an option, the Channel Level Controls may be mounted to the CPA650 front panel. CAUTION: Disconnect the CPA650 from AC power before removing the top panel. Remove the plugs from the front panel mounting holes (save them for the rear panel mounting holes). Remove the knobs and the nuts from the level controls (use an 11mm or
7/16" nut driver). Move the level controls to their respective front panel mounting holes. Re-install nuts and knobs (hold onto controls to avoid twisting wires). Install plugs in rear panel mounting holes. Check wire routing to avoid pinching or over-heating of wires. NOTE:
Relocation of Channel Level Controls must be performed by trained service personnel only.
Input Barrier Strip: These barrier strip screw terminals are for connection of line-level input signals to the channels. For balanced inputs, connect High to (+), Low to (-), and Ground to (gnd). For unbalanced inputs, connect High to (+) and Ground to both (-) & (gnd). In monobridge mode, Channel 1 becomes the active input and the Channel 2 input is inactive.
5-Way Speaker Binding Posts: These 5-way binding posts are for connection of speaker loads to the CPA650. In stereo mode, the red
(+) terminal of each channel is for connection to speaker positive, and the black (-) terminal for each channel is for connection to speaker negative. The CPA650 will deliver up to 325 Watts per channel into 4 ohm minimum loads. In mono-bridge mode, the red (+) terminal of
Channel 1 is for connection to speaker positive, and the red (+) terminal of Channel 2 is for connection to speaker negative. The CPA650 will deliver up to 650 Watts mono-bridged into an 8 ohm minimum load. When using the CPA650 in mono-bridged mode, an autoformer is not necessary to drive 70V speaker systems. However, the load must be floating (neither side grounded) and capacitors should be used for isolation (see 70V Mono-Bridge Output on pg. 8).
Mono-Bridge Switch: This switch selects stereo or mono-bridge operation. In mono-bridge mode, Channel 1 is the active input and the
Channel 2 input is inactive. The red (+) speaker terminal of Channel 1 is for connection to speaker positive, and the red (+) speaker terminal of Channel 2 is for connection to speaker negative. The CPA650 delivers 650 Watts mono-bridged into an 8 ohm minimum load.
Ground Lift Switch: This recessed switch allows the circuit (signal) ground to be lifted (disconnected) from the chassis (AC) ground. This can help prevent hum inducing ground loops within the sound system, while maintaining safe AC grounding of the chassis.
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70V MONO-BRIDGE OUTPUT
When using a CPA650 to drive a distributed 70V speaker system, a distribution transformer at the output of the amplifier is not required.
The CPA650 is capable of driving a 70V line directly. In order to protect the amplifier (and in case of amplifier failure, the speaker transformers) one side of the 70V line must be capacitively isolated as shown below. This is necessary since the bandwidth of the
CPA650 extends well into the low-frequencies, and some protection is required to keep the amplifier from seeing the extremely low impedance of the 70V line below 100Hz.
The two 100uF / 100V non-polar capacitors wired in parallel form a High Pass Filter at 100Hz. In addition, they provide DC protection in case of amplifier failure. Any equalizer in the signal path should not have the low-frequencies boosted, since this will excessively load the amplifier. All bands below 125Hz should be flat or cut only. If more low-frequency is needed, a directly driven sub-woofer should be used to extend the low-frequencies below 100Hz.
325W/4
Ω output 2
325W/4
Ω output 1
100uF
100V nonpolar
---
100uF
100V nonpolar
+ + --speaker negative speaker positive
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PRECAUTIONS
Be sure that power to the CPA650 is turned off when making all connections. High voltages can be present at the speaker terminals, and static pops or broken ground connections on cables can cause speaker damage.
Use speaker wire of sufficient gauge to prevent power loss and damping factor reduction. Larger size wire has a lower resistance and permits longer cable runs. Use 16 or 18 gauge wire for cable runs up to 20 feet. For runs 20~80 feet, use 14 gauge wire. For runs longer than 80 feet, use 10 or 12 gauge wire.
Never connect the red (+) speaker binding posts directly together. This can result in internal damage to the amplifier.
Before turning power on, set the CPA650 level controls to the fully counter-clockwise (off) position.
The CPA650 is designed to be used in a standard 19" equipment rack or on a flat surface. The CPA650 has heat-sinks on each side panel for passive cooling. Do not block the heat-sinks in any way. When mounting the CPA650 in a rack, leave at least one rack-space above and below the amplifier to allow proper air flow. Do not use a CPA650 in a closed rack. In situations with high ambient temperatures, particularly where multiple amplifiers are mounted in the same rack, it may be advisable to use fans to cool the rack. Best results are attained if the fans blow cool air in from the bottom of the rack, up through the amplifiers, expelling the heated air at the top.
If the green LED indicator next to the power switch does not light when the power switch is turned on, turn the power switch off and check the AC power cord connections. If the power cord connections are complete, but the indicator still does not light, disconnect the CPA650 from AC power and check the AC fuse. If the fuse needs to be replaced, use the same value and type fuse only. If the AC fuse continues to fail, the amplifier may require service.
Once power is turned on, slowly advance the level controls clockwise. If no sound is heard, turn the level controls back to their original counter-clockwise position and check to confirm there is an input signal. Also check for proper wiring at all input and output connections, and verify that the cables being used are undamaged and are in good condition.
If the CPA650 should require service, please contact Biamp Systems Customer Service at 1-800-826-1457 or (503) 641-7287.
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Maximum Power Output @ 2kHz (120 VAC)
SPECIFICATIONS
both channels driven into 4 ohms
both channels driven into 8 ohms
mono bridge into 8 ohms
Signal-to-Noise Ratio (0-30kHz)
rated power into 8 ohms
Total Harmonic Distortion
20Hz-20kHz @ rated power
2kHz @ rated power (typical)
Intermodulation Distortion (SMPTE)
Frequency Response (20Hz-20kHz)
Input Impedance
balanced
unbalanced
Sensitivity
Power Requirements
Power Consumption
Dimensions
height (3 rack spaces)
width
depth
Weight
325 watts/channel
200 watts/channel
650 watts
98dB
<1.0%
<.08%
<0.3%
+/-0.5dB
20k ohms
10k ohms
1 Vrms (2.2dBu)
120/220 VAC, 50/60Hz
1500 watts max.
5.25 inches (133mm)
19 inches (483mm)
11 inches (279mm)
33 lbs. (14.97kg)
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WARRANTY
BIAMP SYSTEMS IS PLEASED TO EXTEND THE FOLLOWING 5-YEAR LIMITED WARRANTY TO THE
ORIGINAL PURCHASER OF THE PROFESSIONAL SOUND EQUIPMENT DESCRIBED IN THIS MANUAL
1. BIAMP Systems warrants to the original purchaser of new products that the product will be free from defects in material
5. THIS WARRANTY IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED. BIAMP SYSTEMS and workmanship for a period of 5 YEARS from the date of purchase from an authorized BIAMP Systems dealer, subject to the terms and conditions set forth below.
2. If you notify BIAMP during the warranty period that a BIAMP
Systems product fails to comply with the warranty, BIAMP
Systems will repair or replace, at BIAMP Systems' option, the nonconforming product. As a condition to receiving the benefits of this warranty, you must provide BIAMP Systems with documentation that establishes that you were the original purchaser of the products. Such evidence may consist of your sales receipt from an authorized BIAMP Systems dealer.
Transportation and insurance charges to and from the BIAMP
Systems factory for warranty service shall be your responsibility.
3. This warranty will be VOID if the serial number has been removed or defaced; or if the product has been altered, subjected to damage, abuse or rental usage, repaired by any person not authorized by BIAMP Systems to make repairs; or installed in any manner that does not comply with BIAMP
Systems' recommendations.
4. Electro-mechanical fans, electrolytic capacitors, and normal wear and tear of items such as paint, knobs, handles, and covers are not covered under this warranty.
DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE.
6. The remedies set forth herein shall be the purchaser's sole and exclusive remedies with respect to any defective product.
7. No agent, employee, distributor or dealer of Biamp Systems is authorized to modify this warranty or to make additional warranties on behalf of Biamp Systems. statements, representations or warranties made by any dealer do not constitute warranties by Biamp Systems. Biamp Systems shall not be responsible or liable for any statement, representation or warranty made by any dealer or other person.
8. No action for breach of this warranty may be commenced more than one year after the expiration of this warranty.
9. BIAMP SYSTEMS SHALL NOT BE LIABLE FOR SPECIAL,
INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
INCLUDING LOST PROFITS OR LOSS OF USE ARISING
OUT OF THE PURCHASE, SALE, OR USE OF THE
PRODUCTS, EVEN IF BIAMP SYSTEMS WAS ADVISED OF
THE POSSIBILITY OF SUCH DAMAGES.
Biamp Systems
9300 S.W. Gemini Drive
Beaverton, Oregon 97008
(503) 641-7287
585.0068.90C
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DoC CPA201003
EC Declaration of Conformity
Biamp Systems Corporation, as manufacturer having sole responsibility, hereby declares that the following described product complies with the applicable provisions of the DIRECTIVES below except as noted herein. Any alterations to the product not agreed upon and directed by Biamp Systems Corporation will invalidate this declaration.
Product Model: CPA650
Applicable EC Directives:
LVD Directive (2006/95/EC)
Applicable Harmonized Standards:
Safety
EMC Directive (2004/108/EC) Emissions
EN 60065:2002
EN 55103-1:1996, Environment E2
Special Considerations for Product Environment or Compliance:
Shielded cabling must be used for system connections.
Technical Documentation File, Location and Contact:
9300 S.W. Gemini Drive fax: (503)
Authorized Representative: Larry Copley, Compliance Engineer
Authorized Signature:
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