Yamaha CP2000 User Manual

POWER AMPLIFIER
Owner’s Manual
POWER
ON OFF
TEMP
PROTECTION
POWER
15
20
25
30 30
40
10
3
0
Keep This Manual For Future Reference.
LLR
6
CLIP
LEVEL
–dB
15
20
25
40
10
6
3
0
R
E
WARNING: THIS APPARATUS MUST BE EARTHED
IMPORTANT
THE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE:
GREEN-AND-YELLOW : EARTH BLUE : NEUTRAL BROWN : LIVE As the colours of the wires in the mains lead of this apparatus may
not correspond with the coloured markings identifying the terminals in your plug, proceed as follows:
The wire which is coloured GREEN and YELLOW must be connected to the terminal in the plug which is marked by the letter E or by the safety earth symbol or coloured GREEN and YELLOW.
The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK.
The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED.
* This applies only to products distributed by YAMAHA KEMBLE
MUSIC (U.K.) LTD.

Important Information

Please read the following before using the CP2000
Warnings
Do not allow water to enter this unit or allow the unit to become wet. Fire or electrical shock may result.
Connect this unit’s power cord only to an AC outlet of the type stated in this Owner’s Manual or as marked on the unit. Failure to do so is a fire and electrical shock hazard.
Do not scratch, bend, twist, pull, or heat the power cord. A damaged power cord is a fire and electrical shock hazard.
Do not place heavy objects, including this unit, on top of the power cord. A damaged power cord is a fire and electrical shock hazard. In particular, be careful not to place heavy objects on a power cord covered by a carpet.
Do not place a container with liquid or small metal objects on top of this unit. Liquid or metal objects inside this unit are a fire and electrical shock hazard.
If you notice any abnormality, such as smoke, odor, or noise, or if a foreign object or liquid gets inside the unit, turn it off immediately. Remove the power cord from the AC outlet. Consult your dealer for repair. Using the unit in this condition is a fire and elec­trical shock hazard.
Important Information
i
Should this unit be dropped or the cabinet be damaged, turn the power switch off, remove the power plug from the AC outlet, and contact your dealer. If you continue using the unit without heeding this instruction, fire or electrical shock may result.
If the power cord is damaged (i.e., cut or a bare wire is exposed), ask your dealer for a replacement. Using the unit with a damaged power cord is a fire and electrical shock hazard.
Do not remove the unit’s cover. You could receive an electrical shock. If you think inter­nal inspection, maintenance, or repair is necessary, contact your dealer.
Do not modify the unit. Doing so is a fire and electrical shock hazard.
Cautions
When rack-mounting the unit, allow enough free space around the unit for normal ventilation. This should be: 10 cm behind, and 2 cm above. For normal ventilation during use, remove the rear of the rack or open a ventilation hole. If the airow is not adequate, the unit will heat up inside and may cause a re.
This unit has ventilation holes at the front and rear to prevent the internal temperature rising too high. Do not block them. Blocked ventilation holes are a fire hazard.
Clean the contacts of the phone plug before connecting it to the SPEAKERS jack of this unit. Dirty contacts may generate heat.
Use only speaker cables when connecting speakers to amplier outputs. Using other types of cables is a fire hazard.
Hold the power cord plug when disconnecting it from an AC outlet. Never pull the cord. A damaged power cord is a potential re and electrical shock hazard.
Do not touch the power plug with wet hands. Doing so is a potential electrical shock hazard.
Do not use this amplier for any purpose other than driving loudspeakers.
CP2000—Owner’s Manual
ii

Contents

Package Contents
The CP2000 package should contain the following items. Contact your Yamaha dealer if anything is missing.
CP2000 Power Amplifier
This manual
Trademarks
Yamaha is a trademark of Yamaha Corporation. All other trademarks are the property of their respective holders and are hereby acknowledged.
Copyright
No part of this Owner’s Manual may be reproduced or distributed in any form or by any means without the prior written authorization of Yamaha Corporation.
© 2000 Yamaha Corporation. All rights reserved.
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Welcome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Hookup Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Stereo Hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Parallel Hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Bridge Mode Hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Using the CP2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connecting Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connecting Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Connecting S115 and S112 loudspeakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Turning On the Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Protection System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Daisy Chaining Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
CP2000Owners Manual
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

1 Introduction

Welcome

Thank you for choosing the Yamaha CP2000 Power Amplier. Based on a new improved version of Yamaha’s EEEngine amplier technology, the CP2000 is a versatile two-channel power amplier, offering high-power, superb sonic performance, and reli­ability, all backed by the Yamaha tradition of excellence in professional audio.
CP2000 key features include
650 W+650 W into 4
2,000 W into 4
Yamaha Speaker Processing matches the CP2000 to the Yamaha S115 and S112 loud-
speakers.
Three operating modes are provided: STEREO mode in which Channel L and Channel R operate independently, PARALLEL mode in which the channels operate indepen­dently but are both fed from the Channel L inputs, and BRIDGE mode in which both channels are combined to form a massive 2000 watt single-channel amplifier.
bridged, 1,300 W into 8
stereo, 450 W+450 W into 8
bridged.
stereo.
Introduction
1
Improved EEEngine technology using MOSFET output devices.
Compared to conventional designs, EEEngine s energy saving capabilities reduce power
consumption by up to 50% and cut heat generation by up to 35%.
Built-in limiter prevents excessive output signal distortion, protecting both speakers and eardrums.
Electronically balanced XLR-type and 1/4" phone jack input connectors.
5-way binding posts and 1/4" phone jack output connectors.
Signal and CLIP indicators on each channel provide signal presence and clip warning.
Relay-based protection system protects both amplifier and speakers if heatsink over-
heating occurs or a DC offset is detected at the outputs.
TEMP indicator warns of heatsink overheating.
Variable-speed low-noise fan regulates the system temperature even under the most
demanding conditions. While the CP2000 is idle, the fan stops for silent operation.
CP2000Owners Manual
2
Chapter 1—Introduction

Front Panel

POWER
TEMP
PROTECTION
POWER
ON OFF
1
2 3 4
POWER switch
A
This is the main POWER switch. Press to turn on the amplier; press again to turn off. See “Turning On the Power” on page 11 for more information.
6
POWER AMPLIFIER
15
20
25
30 30
40
10
0
L
7
L
R
CLIP
LEVEL
6
3
–dB
5
15
20
25
40
10
6
3
0
R
B
POWER indicator
This indicator lights up when the CP2000 is turned on.
C
PROTECTION indicator
This indicator shows the status of the protection system. See “Protection System” on page 11 for more information.
D
TEMP indicator
This indicator lights up if the temperature of the CP2000s heatsinks exceed 85 degrees Celsius. Note that this indicator only serves as a warning. It does not indicate operation of the protection system.
Level controls
E
These controls are used to adjust the volume level of each channel. Since the gain of each amplier channel is xed, these controls work by attenuating the input signal from between –
dB and 0 dB. They are detented controls, which means they can be set to any one of 31 positions. Detents protect against accidental adjustment, allow repeatable setting, and make it easy to set both channels to the same volume. Usually these controls are set to maximum and volume levels are controlled from the source equipment, typ­ically a mixer.
CLIP indicators
F
These indicators light up when a channel’s output signal distortion exceeds 1% (i.e., clipping). Output signal clipping is usually due to excessive input signal levels. If a chan­nel’s output signal does clip, that channels limiter circuit is activated to prevent further signal distortion. It’s okay for a CLIP indicator to light occasionally, but if it lights fre- quently, the LEVEL control should be turned down a little.
G
CP2000Owners Manual
LEVEL indicators
These indicators show the output signal level of each channel. The green indicators light up when the output voltage is 2 V or greater, while the yellow indicators light up when it’s 20 V or greater.

Rear Panel

1
CHANNEL R CHANNEL L
STEREO
132
2 3
INPUT
BRIDGE
PARALLEL
A
NEUTRIK
231
OFF ON
YAMAHA SPEAKER PROCESSING
INPUTs
The inputs for each CP2000 channel comprise of one 1/4" phone jack and one XLR-3-31-type connector. Both connectors are electronically balanced, although they can also be used with unbalanced sources. See “Connecting Inputs” on page 7 for more information. See also Hookup Examples” on page 4.
(BRIDGE)
Rear Panel
4
(–)(+)
CHANNEL R CHANNEL L
BRIDGE
SPEAKERS
5
3
1
221
Since the phone jack and XLR-type connector on each channel are internally con­nected, either connector can be used to distribute the input signal to another amplifier. See “Daisy Chaining Inputs” on page 12 for more information.
B
Mode switch
This switch is used to select the amplifier’s mode of operation: STEREO, PARALLEL, or BRIDGE.
STEREO
In this mode, which is typically used to amplify stereo sources, the L and R
channels operate independently.
PARALLEL
In this mode, the L and R channels operate independently but the input signal for both channels is sourced from the Channel L inputs. This mode is typically used with a mono source and allows independent volume control of two sets of speak­ers.
BRIDGE
In this mode, the L and R channels are combined to form a massive 2000 watt single-channel amplier. The input signal is sourced from the Channel L inputs, the volume level is set by using the Channel L LEVEL control, and the speakers are con­nected to the binding posts labelled BRIDGE.
YAMAHA SPEAKER PROCESSING switch
C
This switch is used to activate the special EQ processing that optimizes the CP2000 for use with the Yamaha S115 and S112 loudspeakers. When other speakers are used, this switch should be set to OFF. See “Connecting S115 and S112 loudspeakers” on page 11 for more information.
SPEAKERS connectors
D
The outputs for each CP2000 channel comprise of one 1/4" phone jack and one pair of 5-way binding posts. The 1/4" phone jacks accept 1/4" phone plugs, while the 5-way binding posts offer several methods of connection, including single or double banana plugs, spade lugs, or bare wires. See Connecting Speakers on page 9 for more infor­mation. See also Hookup Examples” on page 4.
CP2000Owners Manual
4
Chapter 2Hookup Examples
GND terminal
E
For safety reasons it’s important that the CP2000 is grounded. The attached power cord has a three-pin plug, and if the ground terminal of the AC outlet to which it is con­nected is grounded, then the CP2000 will be grounded adequately via the power cord. If the AC outlet does not have a suitable ground terminal, a ground connection should be made to this ground terminal. If hum or noise occurs, try to eliminate it by connect­ing this terminal to a good ground point or the chassis of the mixer, preamp, etc.

2 Hookup Examples

Stereo Hookup

In STEREO mode, the L and R channels operate independently. This mode is typically used to amplify stereo sources. The following hookup example shows how the CP2000 can be used in STEREO mode.
STEREO
BRIDGE
PARALLEL
CHANNEL R CHANNEL L
STEREO
132
ST OUT
BRIDGE
INPUT
PARALLEL
NEUTRIK
231
OFF ON
YAMAHA SPEAKER PROCESSING
or
(BRIDGE)
Total impedance: 2 min (1000 W) 4 (650 W) 8 (450 W)
1
BRIDGE
()(+)
CHANNEL R CHANNEL L
SPEAKERS
221
Total impedance: 2 min (1000 W) 4 (650 W) 8 (450 W)
Mixer
STEREO Notes:
The stereo input source is connected to the L and R inputs.
The Channel L and Channel R volume levels can be set independently.
Speakers can be connected to the 1/4" phone jacks and 5-way binding posts.
CP2000Owners Manual

Parallel Hookup

In PARALLEL mode, the L and R channels operate independently but the input signal for both channels is sourced from the Channel L inputs. This mode is typically used with a mono source and allows independent volume control of two sets of speakers. The following hookup example shows how the CP2000 can be used in PARALLEL mode.
STEREO
BRIDGE
PARALLEL
CHANNEL R CHANNEL L
INPUT
STEREO
BRIDGE
PARALLEL
132
OFF ON
YAMAHA SPEAKER PROCESSING
NEUTRIK
231
(BRIDGE)
Parallel Hookup
1
(–)(+)
CHANNEL R CHANNEL L
BRIDGE
SPEAKERS
5
221
Mixer
MONO OUT
Total impedance: 2 min (1000 W) 4 (650 W) 8 (450 W)
Total impedance: 2 min (1000 W) 4 (650 W) 8 (450 W)
PARALLEL Notes:
The input source must be connected to the Channel L inputs.
The Channel R inputs are inactive.
The Channel L and Channel R volume levels can be set independently.
Speakers can be connected to the 1/4" phone jacks and 5-way binding posts.
CP2000Owners Manual
6
Chapter 2Hookup Examples

Bridge Mode Hookup

In BRIDGE mode, the L and R channels are combined to form a massive 2000 watt sin­gle-channel amplier. The input signal is sourced from the Channel L inputs. The fol­lowing hookup example shows how the CP2000 can be used in BRIDGE mode.
STEREO
BRIDGE
PARALLEL
CHANNEL R CHANNEL L
INPUT
STEREO
BRIDGE
PARALLEL
132
OFF ON
YAMAHA SPEAKER PROCESSING
NEUTRIK
231
(BRIDGE)
1
BRIDGE
(–)(+)
CHANNEL R CHANNEL L
SPEAKERS
221
Mixer
Total impedance: 4 min (2000 W) 8 (1300 W)
MONO OUT
The input source must be connected to the Channel L inputs.
The volume level is set by using the Channel L LEVEL control.
The Channel R inputs and LEVEL control are inactive.
The speakers must be connected to the 5-way binding posts.
The 1/4" phone jack outputs must not be used.
CP2000Owners Manual
BRIDGE Notes:

3 Using the CP2000

Installation

The CP2000 can be mounted in a standard rack and requires 2 rack-space units. In addition to the front-panel rack-mounting holes, the CP2000 also features support brackets at the rear, which offer additional support and should be xed to the rear of the rack. The CP2000 can also be placed horizontally on the oor or a suitable table.
The CP2000 uses a variable-speed low-noise fan to regulate the system temperature, which draws air in from the front and expels it from the rear. For correct operation, its important that the air ow at the front and rear of the CP2000 is not blocked or restricted in any way. If the CP2000 is mounted in a portable rack with removable front and rear covers, be sure to remove the covers before using the CP2000.

Connecting Inputs

Using the CP2000
7
Warning: Turn off all equipment before making any connections.
The inputs for each CP2000 channel comprise of one 1/4" phone jack and one XLR-3-31-type connector. Both connectors are electronically balanced, although they can also be used with unbalanced sources. For optimum performance, use only quality screened cables for input connections. Under no circumstances should you connect more than one sound source to the same channel. The inputs are designed to work with line-level sources, such as mixers, CD players, and other professional audio equipment.
The 1/4" TRS (Tip-Ring-Sleeve) phone jacks are wired as follows: sleeve–ground, tip–hot (+), and ring–cold (–).
TRS phone plugs should be wired as fol­lows.
To connect an unbalanced source to an INPUT jack, connect the ring (cold) ter­minal to the sleeve (ground) terminal, as shown.
1/4" TRS phone plug
1/4" TRS phone plug
Tip (hot)
Ring (cold)
Sleeve (ground)
Tip (hot)
Ring (cold)
Sleeve (ground)
The XLR-type connectors are wired as follows: pin 1–ground, pin 2–hot (+), and pin 3–cold (–).
Male XLR plugs should be wired as fol­lows.
Male XLR plug
CP2000Owners Manual
1 (ground)
3 (cold)
2 (hot)
8
Chapter 3Using the CP2000
To connect an unbalanced source to an INPUT XLR, connect pin 3 (cold) to pin 1 (ground), as shown below.
The following table shows which inputs, LEVEL controls, and signal and CLIP indica­tors are active in each CP2000 mode.
Channel Item STEREO PARALLEL BRIDGE
INPUT connectors
R
L
LEVEL control Signal & CLIP indicators INPUT connectors LEVEL control Signal & CLIP indicators
Male XLR plug
OXX OOX OOO OOO OOO OOO
1 (ground)
3 (cold)
2 (hot)
CP2000Owners Manual

Connecting Speakers

Connecting Speakers
Warning: Turn off all equipment before making any connections.
The outputs for each CP2000 channel comprise of one 1/4" phone jack and one pair of 5-way binding posts. The 1/4" phone jacks accept 1/4" phone plugs, while the 5-way binding posts offer several methods of connection, including single or double banana plugs, spade lugs, or bare wire.
For optimum performance, use quality speaker cables with a suitable power rat­ing.
Phone plugs should be wired as follows. When connecting to the binding posts, be
sure to connect the speaker cables with the correct polarity, otherwise, the sound qual­ity will be affected. The plus (+) terminal on the speaker must be connected to the bind­ing post labelled (+), and the (–) terminal on the speaker must be connected to the binding post labelled (–).
Caution for Speaker Connection
1/4" phone plug
9
Tip (+)
Sleeve (–)
1 Turn off the POWER switch.
2 Before connecting any speakers, remove the
protective cover by unscrewing the two fixing screws shown here. Be sure to replace the cover when you’ve finished making your con­nections.
3 When attaching bare-ended speaker cables,
strip off about 15 mm of insulation, unscrew the binding posts, and insert the bare wires through the holes in the posts, and then tighten the binding posts. Make sure that none of the bare wires are splayed in such a way that they may cause a short.
When attaching speaker cables with spade lugs, unscrew the binding posts, place the spade lugs on the posts, and then tighten the binding posts.
4 Reattach the protective cover over the speaker
terminals.
European Specifications Only
Screw
1
15mm
1
This mark indicates a dangerous electri-
1
221
cally live terminal. When connecting an external wire to this terminal, it is necessary either to have “a person who have received
CHANNEL R CHANNEL L
BRIDGE() (+)
SPEAKERS
appropriate guidance on handling” make the connection or to use leads or a cord that have been manufactured in such a way that the connection can be made simply and without problem.
CP2000Owners Manual
10 Chapter 3Using the CP2000
The following table shows which outputs can be used in each CP2000 mode and the minimum speaker impedance. Note that this is the total speaker impedance that can be
connected to each channel. For example, a 2 minimum means that you could connect a single 2 speaker, two 4Ω speakers in parallel, or four 8Ω speakers in parallel.
Mode Item STEREO PARALLEL BRIDGE
Phone jack (2)
Channel R
Binding posts (1) Binding posts (1)
Channel L
Phone jack (2)
In the STEREO and PARALLEL modes, you can connect speakers to a channel’s 1/4" phone jack and binding posts simultaneously, so long as the total impedance is not less
than 4. In BRIDGE mode, the speakers must be connected to the binding posts
labeled “BRIDGE” and the 1/4" phone jacks cannot be used.
2 min
X
4 min
2 min
X
STEREO and PARALLEL
mode only
CHANNEL R CHANNEL L
(total 2 min)
BRIDGE(–) (+)
SPEAKERS
4 min4 min
1
(total 2 min)
221
4 min4 min
When connecting speakers, its important that the total impedance is not less than the minimum specied. In STEREO and PARALLEL modes, the minimum impedance is
2, and for BRIDGE mode it’s 4. When speakers are connected in parallel, the
impedance is reduced, as shown in the following examples. When connecting multiple speaker cabinets, make sure the total impedance is not less than the minimum.
Total = 2
8
Total = 4
8
Total = 2
4
CP2000Owners Manual
8
8
8
8
4
See the Hookup Examples” on page 4 for more information on connecting speakers.
Connecting S115 and S112 loudspeakers 11

Connecting S115 and S112 loudspeakers

The CP2000 features special EQ processing that opti-
OFF ON
mizes the CP2000 for use with the Yamaha S115 and S112 loudspeakers (especially the 115IV). This process­ing is turned on and off by using the YAMAHA
YAMAHA SPEAKER PROCESSING
SPEAKER PROCESSING switch. Yamaha loudspeakers should be connected just like any other speaker, and for best performance the YAMAHA SPEAKER PROCESSING switch should be set to ON. When using other speakers, make sure the YAMAHA SPEAKER PROCESSING switch is set to OFF.

Turning On the Power

To prevent audible thumps and clicks, turn on your audio equipment in the following order (reverse this order when turning off your equip­ment)sound sources, mixer, CP2000.
1 Press the [POWER] switch to turn on the CP2000.
The CP2000 starts up and the POWER indicator lights up. The output relay closes, connecting the speakers, several seconds after the CP2000 is
turned on.
2 Press the [POWER] switch again to turn off the CP2000.
The POWER indicator goes out. The output relay opens, disconnecting the speakers, immediately the CP2000 is turned off.
POWER
ON OFF

Protection System

The CP2000 features a relay-based protection system to protect itself and the connected speakers against damage due to abnormal operating conditions. When the protection system is active, the speakers are disconnected from the CP2000 and the PROTEC­TION indicator lights up.
When the CP2000 is turned on, the output relay remains open, disconnecting the speakers, for approximately three seconds. During this time, the PROTECTION indi­cator lights up. When the protection system has conrmed that no abnormal condi­tions exist, the output relay closes, connecting the speakers, and the PROTECTION indicator goes out. In addition to allowing the protection system to perform various checks, protects the speakers against thumps and clicks as the CP2000 starts up.
When the CP2000 is turned off, the output relay opens immediately, disconnecting the speakers, and preventing unwanted sound as the CP2000 shuts down.
If during normal operation the protection system detects that a heatsink has overheated or a DC offset is present at a speaker output, the output relay opens, disconnecting the speakers, and the PROTECTION indicator lights up. Once the heatsink has cooled down, or the DC offset removed, the protection system automatically closes the output relay, reconnecting the speakers, the PROTECTION indicator goes out, and normal operation is resumed.
Heatsink overheating is typically caused by inadequate ventilation and it’s important that you investigate the cause and resolve it (see page 13 for more information).
PROTECTION
Another layer of protection is offered by the thermostatic cutout (auto-reset type) built into the CP2000 power supply transformer. If abnormal operating conditions, such as a shorted load or overload, continue for a long period of time, the thermostatic cutout
CP2000Owners Manual
12 Chapter 3Using the CP2000
disconnects the AC power when the transformer reaches a certain temperature and the POWER indicator goes out. Once the transformer has cooled down, the thermostatic cutout automatically closes, reconnecting the power, the POWER indicator lights up, and normal operation is resumed.

Daisy Chaining Inputs

Since the phone jack and XLR-type connector on each input channel are internally con­nected, input signals can easily be distributed to other ampliers by daisy chaining the inputs, as shown below.
CHANNEL R CHANNEL L
CHANNEL R CHANNEL L
INPUT
STEREO
BRIDGE
132
STEREO
BRIDGE
132
PARALLEL
OFF ON
YAMAHA SPEAKER PROCESSING
INPUT
PARALLEL
OFF ON
YAMAHA SPEAKER PROCESSING
NEUTRIK
231
NEUTRIK
231
(BRIDGE)
(BRIDGE)
1
BRIDGE
(–)(+)
CHANNEL R CHANNEL L
SPEAKERS
1
BRIDGE
(–)(+)
CHANNEL R CHANNEL L
SPEAKERS
221
221
Mixer
CP2000Owners Manual
ST OUT
Troubleshooting 13

Troubleshooting

The following table explains the operation of the CLIP, TEMP, and PROTECTION indicators, typical situations in which they may light up, and what action to take if and when they do.
Symptom Possible Cause Remedy Protection System
Make sure the power
POWER indicator not lit
No sound
Stereo sources sound odd
CLIP indicator lit
TEMP indicator lit
PROTECTION indicator lit
Power cable discon­nected or ampler turned off.
Input signal not con­nected or LEVEL con­trols turned down.
Incorrect speaker polarity.
The input signal is too high.
The speaker imped­ance is too low.
There is a short at the speaker terminals, amplier terminals, or in the speaker cable.
The heatsink temper­ature has exceeded 85˚C.
The heatsink temper­ature has exceeded 90˚C.
A DC offset of ±2 V or more was detected at the ampliers out­puts.
cable is connected properly and the POWER switch is in the ON position.
Check the input con­nections and LEVEL control settings.
Check the polaity of the speaker connec­tions and correct if necessary.
Reduce the input sig­nal level, or turn down the LEVEL con­trol.
Ensure that the total speaker impedance is not less that 2 (STE­REO/PARALLEL) or 4 (BRIDGE).
Locate and remove the short.
Make sure that the air vents are not blocked and improve the air­ow around the amplier.
Make sure that the air vents are not blocked and improve the air­ow around the amplier.
Contact your Yamaha dealer or service cen­ter.
The limiter circuit pre­vents further clipping distortion.
The heatsink temper­ature warning circuit activates.
The protection circuit activates, opening the output relay and dis­connecting the speak­ers. The output relay closes automatically when the heatsink has cooled down, or the DC fault is removed.
CP2000Owners Manual
14 Appendix

Appendix

Specications
Power Output Level 8/STEREO 450 W + 450 W
1 kHz, THD+N=1%
1 kHz 20 ms, non-clip
Power Bandwidth
THD+N=0.2% (half power)
Total Harmonic Distortion (THD+N)
20 Hz–20 kHz (half power)
Intermodulation Distortion
60 Hz:7 kHz, 4:1, half power
Frequency Response 8, Po=1W 0 dB, +0.5 dB, –1 dB f=20 Hz50 kHz
Channel separation
Half power, RL=8 LEVEL=max., input 600 shunt
Residual Noise
LEVEL=min., 12.7 kHz LPF, IHF-A network
S/N Ratio
12.7 kHz LPF
Damping Factor
RL=8, 1 kHz
4/STEREO 650 W + 650 W 8/BRIDGE 1300 W 2/STEREO 1000 W + 1000 W 4/BRIDGE 2000 W
10 Hz–40 kHz
4-8/STEREO 8/BRIDGE
4-8/STEREO 8/BRIDGE
0.1%
0.1%
70 dB, 1 kHz
≤ –70 dB
104 dB
200
Sensitivity
LEVEL=max., rated power into 8
Voltage Gain
LEVEL=max. Input Impedance 30 k (balanced), 15 k (unbalanced)
Front panel
Controls
Rear panel
Input
Connectors
Output
POWER x1 (green)
PROTECTION x1 (red)
Indicators
TEMP x1 (red) heatsink temp 85°C
CLIP x2 (red)
SIGNAL
+4 dB
33.8 dB
POWER switch (push on/push off) LEVEL attenuator (31 position) x2
Mode switch (STEREO/BRIDGE/PARALLEL) YAMAHA SPEAKER PROCESSING switch (ON/OFF)
XLR-3-31 type (balanced) L+R 1/4" phone jack (balanced) L+R
1/4" phone jack L+R 5-way binding post x1
x2 (green) output voltage 2 V x2 (yellow) output voltage 20 V
CP2000Owners Manual
Dimensions 15
88
480
410
416
POWER switch on/off mute
Protection Circuit
Fan Circuit Stop–low speed (50°C)–variable–high Speed (70°C) Limiter Circuit Comp: THD0.5%
Power requirements
Idle Power Consumption 30 W 1/8 Power Consumption (4) 400 W Maximum Power Consumption (4) 2000 W
DC detection TEMP (heatsink temp 90°C) PC limiter: RL1
U.S.A. & Canada 120 V AC, 60 Hz Europe 230 V AC, 50 Hz Australia 240 V AC, 50 Hz
Dimensions (W
Weight 14 kg (30.9 lbs)
AC Power cord length 2.3 m
0 dB=0.775 V rms, half power=1/2 power output level
×
H × D) 480 × 88 × 416 mm (18.9 x 3.46 x 16.4 inches)

Dimensions

Specications and external appearance subject to change without notice.
For European Model Purchaser/User Information specied in EN55103-1 and EN55103-2.
Inrush Current: 65A Conformed Environment: E1, E2, E3 and E4
CP2000Owners Manual
CHANNEL L
(BRIDGE)
(PARALLEL)
CHANNEL R
INPUT
BA
BA
CHANNEL L
ATT
CHANNEL R
ATT
Limiter
Lch Power Amp
ON
OFF
ON
OFF
YAMAHA
SPEAKER
PROCESSING
INV
PARALLEL
BRIDGE
STEREO
Limiter
Rch Power Amp
PROTECTION
TEMP
SIGNAL
SIGNAL
CLIP
CLIP
Protection
Circuit
Temperature
Sensor
(Heat Sink)
SPEAKERS
CHANNEL L
CHANNEL R
L+R BRIDGE
FAN
+B
E
–B
+24
E
–24
POWER CIRCUIT
POWER
POWER SW

Block Diagram

YAMAHA CORPORATION
V617350 R1 1 IP 20 Pro Audio & Digital Musical Instrument Division
P.O. Box 3, Hamamatsu, 430-8651, Japan
NP Printed in Taiwan
Loading...