Yamaha Audio P4500, P3200, P1600 User Manual

POWER AMPLIFIER
Owner's Manual Mode d'emploi Bedienungsanleitung Manual de instrucciónes
TEMP PROTECTION POWER
EEEngine
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CLIP
SIGNAL
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30
6
40
3
–dB 0 0
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10
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AB
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M

Introduction

Thank you for purchasing a Yamaha P4500/3200/1600 series power amplifier. This series of audio amps was developed from Yamaha's wealth of experience in building PA
equipment and its tradition of careful attention to every detail of circuit design. These amps feature high power and superb quality together with superior reliability and stability, guarantee­ing the highest possible audio performance.
Main features of the P4500/P3200/P1600 series
• Three types of input jack (balanced XLR type connectors, balanced phone jacks, and barrier strip), and five-way binding post output jacks are provided, allowing use in a wide variety of situations including installed applications.
• Three operating modes are provided: STEREO mode in which CHANNEL A and B operate independently, PARALLEL mode in which a mono source is output by two amp systems, and BRIDGE mode in which the unit operates as a single high-power amplifier.
• A SIGNAL indicator and CLIP indicator is provided for each channel.
• The PROTECTION indicator shows the status of protective circuitry such as power-on/off protection, output muting, and the DC detection circuit. The TEMP indicator warns of heat sink overheating.
• Variable-speed low-noise fan(s) ensures high reliability even under demanding conditions.
This owner's manual covers the three models P4500, P3200 and P1600. In order to take full advantage of your power amp and enjoy long and trouble-free operation, please read this owner's manual carefully before use.

English

IMPORTANT NOTICE FOR
THE UNITED KINGDOM
Connecting the Plug and Cord
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.

Precautions

1. Avoid excessive heat, humidity, dust and vibration.
Keep the unit away from locations where it is likely to be exposed to high temperatures or humidity — such as near radiators, stoves, etc. Also avoid locations which are subject to excessive dust accumulation or vibration which could cause mechanical damage.
2. Ventilation
Allow a distance of 10 cm between the unit and the wall so that heat generated from the unit will be released effectively. Also, allow enough space between the unit and other devices. If you mount the unit in an audio rack, keep a space of 10 cm on the top panel, and a space of 1 cm to the side panel. Remove the rear panel of the rack or open a vent hole. If heat release is inadequate, the unit will retain heat inside the unit, which may cause a fire.
3. Avoid physical shocks.
Strong physical shocks to the unit can cause damage. Handle it with care.
4. Do not open the case or attempt repairs or modifica­tions yourself.
This product contains no user-serviceable parts. Refer all maintenance to qualified Yamaha service personnel. Opening the case and/or tampering with the internal circuitry will void the warranty.
5. Make sure power is off before making or removing connections.
Always turn the power OFF prior to connecting or disconnecting cables. This is important to prevent dam­age to the unit itself as well as other connected equip­ment.
6. Handle cables carefully.
Always plug and unplug cables — including the AC cord — by gripping the connector, not the cord.
7. Clean with a soft dry cloth.
Never use solvents such as benzine or thinner to clean the unit. Wipe clean with a soft, dry cloth.
8. Always use the correct power supply.
Make sure that the power supply voltage specified on the rear panel matches your local AC mains supply. Also make sure that the AC mains supply can deliver more than enough current to handle all equipment used in your system.

Contents

Controls and Functions ............................................................. 2
Front Panel........................................................................... 2
Rear Panel ........................................................................... 3
Modes: STEREO/P ARALLEL/BRIDGE................................ 4
SPEAKER IMPEDANCE...................................................... 4
Caution for Speaker Connection ............................................... 5
Rack Mounting .......................................................................... 6
Mounting in an EIA standard rack ....................................... 6
Mounting four or fewer amps in an open-backed rack......... 6
Mounting five or more amps, or when (even with four or
fewer units) the back of the rack cannot be left open.......... 6
Portable Rack Mounting ...................................................... 7
Positioning the Housed Amplifier......................................... 7
Specifications ............................................................................ 8
General Specifications......................................................... 8
Block Diagram...................................................................... 9
Dimensions .......................................................................... 9
Performance Graphs.......................................................... 10
Troubleshooting ...................................................................... 10

Controls and Functions

Front Panel

23
TEMP PROTECTION POWER
ON OFF
1 POWER switch and indicator
This is the main POWER switch. Press to power ON the amplifier. Press again to power OFF. The POWER indicator lights up when the amplifier is powered ON.
2 TEMP indicator
When the temperature of the heat sink exceeds 85 degrees Celsius, this indicator will light red.
3 PROTECTION indicator
This red LED indicator lights up for approximately 3 seconds when the amplifier is powered ON, indicating that the soft-start protection system is working. No sound is output during soft-start up. If one of the protec­tion systems is activated during normal use, this indica­tor lights up and no sound is output. The speaker system is actually disconnected from the amplifier outputs when this indicator lights up. The protection systems are activated when overheating occurs or a DC voltage is present at the amplifier outputs. If the problem is cor­rected, the protection systems deactivate automatically, this indicator goes out, and normal amplifier operation is resumed.
EEEngine
4
CLIP
AB
SIGNAL
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20
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30
40
10
30
6
3
–dB 0 0
5
4 CLIP indicators
These red LED indicators light up when the respective channel’s output signal distortion exceeds 1% (i.e. clip­ping). Output signal clipping is usually due to excessive input signal levels.
5 SIGNAL indicators
These green LED indicators light up when the respective channel’s output signal exceeds 2 Vrms. This is equiva­lent to 1/2 watt into 8, 1 W into 4Ω.
6 Volume controls
These volume controls allow you to adjust the volume level in 31 steps in the range between – dB and 0 dB. To fix the volume setting by protecting the controls, install the included security cover over the controls and tighten the screws in the holes as shown below.
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25
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2

Rear Panel

SPEAKERS
CHANNEL B CHANNEL A
STEREO
BRIDGE
SPEAKERS
CHANNEL B CHANNEL A
STEREO
BRIDGE
3214
INPUT SPEAKERS
CHANNEL B CHANNEL A
GG
1 INPUT terminals (CHANNEL A, B)
Three types of balanced terminals for channels A and B are provided. Channel A input terminal is used in Bridge and Parallel mode.
XLR-3-31 type connector
They are wired pin 1–ground, pin 2–hot (+), and pin 3 cold (-).
GroundHot
1
2
3
Cold
(BRIDGE) (PARALLEL)
BRIDGE
STEREO PARALLEL
CHANNEL B CHANNEL A
STEREO BRIDGE
MAX. OUTPUT 450W/4 (STEREO) MAX. OUTPUT 900W/8 (BRIDGE)
(STEREO) 4-8/SP (BRIDGE) 8-16/SP
3 SPEAKERS terminals
For polarity in each mode, refer to the following dia­gram.
• STEREO, PARALLEL mode
• BRIDGE mode
Phone jack
They are wired tip–hot (+), ring–cold (-), and sleeve– ground.
Ring
Sleeve Tip
Barrier strip
Hot (+), Cold (-) and Ground (G).
2 STEREO/BRIDGE/PARALLEL switch
This slide switch is used to set the amplifier operating mode: STEREO, BRIDGE or PARALLEL. For details on the functionality of each mode, refer to “Modes” on page 4.
In BRIDGE mode, the (-) jacks of CHANNELS A and B are not used. The minimum impedance for the connected speaker system is specified in “Speaker Impedance” on page 4.
4 GND terminals
This is the grounding screw terminal. If hum or noise occurs, ground (earth) the unit via this jack, or try connecting it to the chassis of the mixer or preamp, etc.
3

Modes: STEREO/PARALLEL/BRIDGE

STEREO mode
In this mode, channels A and B operate independently (as a conventional stereo amp). The CHANNEL A input signal will be output from the CHANNEL A output jacks, and the CHANNEL B input signal will be output from the CHANNEL B output jacks.
PARALLEL mode
In this mode, the CHANNEL A input signal will be output from the output jacks of both channels A and B. The CHANNEL B input jack is not used. The (channel)
A
and B volumes can be adjusted independently.

SPEAKER IMPEDANCE

In STEREO and PARALLEL modes, the minimum load (=speaker) impedance is 4. In BRIDGE mode it is 8Ω. Make sure that the impedance does not fall below this specified impedance.
STEREO mode connections
BRIDGE mode
In this mode, the CHANNEL A input signal will be output from the BRIDGE output jacks. In this case, use
the front panel (channel)
volume control to adjust the
A
volume.
BRIDGE mode connections
SPEAKERS
CHANNEL B CHANNEL A
Set to STEREO
BRIDGE
STEREO PARALLEL
MAX. OUTPUT 450W/4 (STEREO) MAX. OUTPUT 900W/8 (BRIDGE)
–+
4 min. 4 min.
Speaker System
PARALLEL mode connections
SPEAKERS
CHANNEL B CHANNEL A
Set to PARALLEL
BRIDGE
STEREO PARALLEL
MAX. OUTPUT 450W/4 (STEREO) MAX. OUTPUT 900W/8 (BRIDGE)
+
STEREO BRIDGE
STEREO BRIDGE
–+
+
Set to BRIDGE
BRIDGE
STEREO PARALLEL
SPEAKERS
CHANNEL B CHANNEL A
STEREO BRIDGE
MAX. OUTPUT 450W/4 (STEREO) MAX. OUTPUT 900W/8 (BRIDGE)
+
8 min.
Speaker System
4 min. 4 min.
Speaker System
4

Caution for Speaker Connection

1. Turn off the POWER switch.
2. Remove the cover attachment screw(s) and remove the protective cover from the speaker terminals.
Screw
3. After removing approx. 10 mm of insulation from the ends of the speaker cables, pass the bare ends of the speaker wires through the holes in the corresponding speaker terminals and tighten the terminals to securely clamp the wires. Refer to page 3 for speaker porality.
10mm
• Speaker fuse
The output capacity of your amplifier is very high: 460 W+460 W (8) in stereo and 1240 W (8) in monaural on the P4500; 340 W+340 W (8) in stereo and 880 W (8) in monaural on the P3200; 160 W+160 W (8) in stereo and 400 W (8) in monaural on the P1600. Be sure to use a speaker system that has sufficient input capacity. If the input capacity of your speaker system is lower than the rated output of the power amplifier, you can protect your speakers by connecting a fuse serially between the speaker and amplifier as shown below.
Power amplifier
_
+ _
Fuse
Speaker system
+
Use the following formula to determine the fuse capacity according to the speaker’s input capacity.
2
Po = I R I = Po/R
At this time make sure that the bare ends of the speaker cables do not extend from the terminals in such a way that they touch the chassis.
    ฀    
4. Reattach the protective cover over the speaker termi­nals.
P0 [W] : Speaker’s continuous input capacity (noise or
RMS)
R [] : Speaker’s nominal impedance I [A] : Required fuse capacity
ex.) Speaker’s continuous input capacity : 100 W
Speaker’s impedance : 8
I = 100/8
In this example, the required fuse capacity is calculated as 3.5 [A].
• Speaker cable
If you use a long speaker cable, use as thick a cable as possible to prevent deterioration of the damping factor or power loss inside the cable.
5

Rack Mounting

Mounting in an EIA standard rack

If multiple high-power amp units are mounted in a rack with poor ventilation, the heat from the amps will cause the interior of the amp to become very hot, causing the performance of the amps to be impaired. When mounting amps in a rack, you must make provision for ventilation so that the heat can escape. When mounting amps in a rack, please attach ventilation panels above and below the amp to allow air circulation. When doing so, it is necessary for 35% or more of the entire surface area of a 1U size panel to be open. Air circulation will be even better if the top surface of the rack has ventilation openings.
Ventilation panel
Yamaha provides an optional 1U-size ventilation panel VP1.
480
44
Unit: mm
Mounting four or fewer amps in
an open-backed rack
Install the ventilation panel above the amps, as shown in the following figure.
Ventilation panel (attach to the front or rear of the rack)
TEMP PROTECTION POWER
ON OFF
EEEngine
TEMP PROTECTION POWER
ON OFF
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TEMP PROTECTION POWER
ON OFF
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CLIP
AB
SIGNAL
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–dB∞ 0 ∞ 0
CLIP
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SIGNAL
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–dB∞ 0 ∞ 0
CLIP
AB
SIGNAL
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–dB∞ 0 ∞ 0
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3
Mounting five or more amps, or
when (even with four or fewer units) the back of the rack cannot be left open
Install ventilation panels above and below each amp, as shown in the following figure.
CLIP
AB TEMP PROTECTION POWER
ON OFF
EEEngine
TEMP PROTECTION POWER
ON OFF
EEEngine
TEMP PROTECTION POWER
ON OFF
EEEngine
TEMP PROTECTION POWER
ON OFF
EEEngine
SIGNAL
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40
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–dB∞ 0 ∞ 0
CLIP
AB
SIGNAL
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30
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40
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3
–dB∞ 0 ∞ 0
CLIP
AB
SIGNAL
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20
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30
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40
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3
–dB∞ 0 ∞ 0
CLIP
AB
SIGNAL
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–dB∞ 0 ∞ 0
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3
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6

Portable Rack Mounting

The amplifier intakes cool air through the front panel and exhausts warm air out the rear panel. When mounting amplifiers in a portable rack, make sure the rear panel is completely open for ventilation.
(Rear View)(Side View)
Front
Air intake Air exhaust
Completely open
INPUT SPEAKERS
(BRIDGE)
CHANNEL B CHANNEL A
GG
CHANNEL B CHANNEL A
(PARALLEL)
BRIDGE
STEREO PARALLEL
MAX. OUTPUT 450W/4 (STEREO) MAX. OUTPUT 900W/8 (BRIDGE)
(STEREO) 4-8/SP (BRIDGE) 8-16/SP
STEREO BRIDGE

Positioning the Housed Amplifier

Place the case so that the ventilation airflow paths are not blocked.
Front
NO
Less than 10 cm
Front
NO
7

Specifications

General Specifications

P4500 P3200 P1600
Power Output Level (Rated Power) 8/STEREO 460 W + 460 W 340 W + 340 W 160 W + 160 W
20 Hz~20 kHz 4/STEREO 620 W + 620 W 440 W + 440 W 200 W + 200 W
0.05% 8/BRIDGE 1240 W 880 W 400 W 1 kHz 8/STEREO 520 W + 520 W 370 W + 370 W 175 W + 175 W
0.05% 4/STEREO 720 W + 720 W 520 W + 520 W 230 W + 230 W 8/BRIDGE 1440 W 1040 W 460 W
1 kHz, 20 ms, no clip 2/STEREO 1300 W + 1300 W 950 W + 950 W 350 W + 350 W Power Bandwidth Half Power, 0.1% 10 Hz~40 kHz Total Harmonic Distortion (THD + N) 4~8/STEREO
20 Hz~20 kHz, Half Power 8/BRIDGE Frequency Response 10 Hz~50 kHz, +0, –1 dB Intermodulation distortion (IMD) 4~8/STEREO
7 kHz: 60 Hz, 1: 4, Half Power 8/BRIDGE Damping factor 1 kHz, 8 200 Input Impedance 30 k/Balance, 15 k/Unbalanced Residual Noise Vol. min. 12.7 kHz LPF
IHF-A network
SN Ratio Input 600 shunt 12.7 kHz LPF
IHF-A network
Channel Separation Half Power, 8, Vol. max. 65 dB, 20 Hz~20 kHz
input 600 shunt 75 dB, 1 kHz
Slew Rate STEREO >30 V/µ sec
8 full swing BRIDGE >50 V/µ sec Sensitivity (Vol. max.) Rated Power into 8 +5.7 dB +4.2 dB +1.2 dB Voltage Gain (Vol. max.) 32.1 dB Controls Front Panel POWER switch (Push on/Push off)
Rear Panel Mode switch (STEREO/BRIDGE/PARALLEL)
Connectors Input Barrier strip terminal
Output 5-way binding posts
Indicators POWER
TEMP (heatsink temp 85°C) PROTECTION (mute) CLIP × 2 OUTPUT SIGNAL × 2
Protection Circuits POWER switch ON/OFF, Muting, DC detection
PC limiter RL 1 Fan Circuits Low speed (50°C), Variable, High speed (70°C) Power Requirements United States & Canada 120 V, 60 Hz
Europe 230 V, 50 Hz
Other 240 V, 50 Hz Power Consumption 500 W/650 VA 400 W/500 VA 200 W/250 VA Dimensions (W × H × D) 480 × 103.5 × 455 mm Weight 16 kg 15 kg 12 kg Accessories Security cover Options Ventilation panel: VP1
0.05%
0.05%
–80 dB
105 dB 104 dB 101 dB
Volume (31 position dB calibrated)
XLR-3-31 type 1/4-inch phone jack (balanced)
TEMP (heatsink temp 95°C)
0 dB=0.775 Vrms, Half Power=1/2 Power Output Level (Rated Power) Specifications subject to change without notice.
8

Block Diagram

SIGNAL
Ach Power Amp
CHANNEL A
(BRIDGE)
(PARALLEL)
G
INPUT
G
CHANNEL B

Dimensions

A
PARALLEL
BRIDGE
STEREO
B
PC Limiter
Temperature
Sensor
(Heat Sink)
Bch Power Amp
PC Limiter
CLIP
CLIP
Protection
Circuit
SIGNAL
PROTECTION TEMP
CHANNEL A
SPEAKERS
CHANNEL B
424
W:480
379.6 26
45
61.229255.2
D:455
4.4
308
88
15.5
H:103.5
Unit: mm
9

Performance Graphs

5k
Mode:STEREO Both ch Driven RL=4, f=1kHz
P3200P4500
5k
Mode:STEREO Both ch Driven RL=4, f=1kHz
1k
100
Power Consumption [W]
20
P1600
5k
1k
100
Power Consumption [W]
20
Output Power [W]
Mode:STEREO Both ch Driven RL=4, f=1kHz
1k
100
Power Consumption [W]
20
1 10 100 1k1k100101
Output Power [W]Output Power [W]
1k100101

Troubleshooting

The following table lists the main causes of abnormal operation and the corrective measures required, as well as the protective circuit operation in each case.
Indicator Probable Cause Remedy Protection Circuit
CLIP indicator lights.
TEMP indicator lights.
PROTECTION indicator lights.
There is a short at a speaker terminal, amplifier terminal, or wire.
The amplifier load is exces­sive.
The heat sink temperature has exceed 85˚C.
The heat sink temperature has exceeded 95˚C.
A DC voltage of +/–2 V or greater was generated in the power amplifier’s output circuit.
Locate and correct the cause of the short.
Use a speaker system with an impedance of at least 4 (stereo) or 8 (bridge).
Check the ventilation slots, and improve the airflow around the amplifier.
Check the amplifier ventila­tion conditions and take appropriate measures to improve airflow around the amplifier.
Consult your dealer or nearest Yamaha service center.
The PC limiter circuit operates to protect the power transistors.
Warning by the TEMP indicator.
The thermal protection circuit operates to protect the power transistors.
The relay operates to protect the speaker system.
10
P4500/3200/1600 Mode d'emploi

FRANÇAIS

Nous vous remercions d’avoir opté pour un amplificateur de puissance Yamaha P4500/3200/1600.
Cette série d’amplificateurs audio est le fruit d’une longue expérience que Yamaha a accumulée en fabricant du matériel PA ainsi que d’une attention traditionnelle portée à tous les détails de la conception d’un circuit. Ces amplificateurs n’offrent donc pas seulement une performance sortant de l’ordinaire mais également une qualité, une fiabilité et une solidité qui garantit la meilleure reproduction audio possible.
Voici les caractéristiques principales de la série P4500/ 3200/1600:
• Trois types d’entrées (connecteurs symétriques de type XLR, des jacks symétriques et des connecteurs pour câbles dénudés) ainsi que des sorties à bornes de connexion ce qui permet d’insérer cet amplificateur dans n’importe quel type d’installation.
Trois modes: Le mode STEREO qui permet aux canaux A
• et B d’opérer indépendamment, le mode PARALLEL qui reproduit un signal mono via les deux circuits d’amplifica­tion et le mode BRIDGE qui permet de transformer l’appa­reil en un amplificateur à un canal de très haute puissance.
• Un témoin SIGNAL et CLIP par canal.
• Un témoin PROTECTION qui indique le statut du circuit de protection tel que la protection lors de la mise sous/hors tension, l’étouffement de la sortie et le circuit de détection de courant continu. Le témoin TEMP s’allume lorsqu’il y a surchauffe du radiateur dissipateur de chaleur.
• Un ou plusieurs ventilateur(s) à vitesse variable d’un niveau de bruit très bas garantissent une excellente fiabi­lité même dans les conditions les plus difficiles.
Ce manuel couvre les modèles P4500, P3200 et P1600. Veuillez le lire complètement pour éviter toute erreur de manipulation et pouvoir jouir de votre amplificateur durant de longues années.

Précautions

1. Evitez des endroits excessivement poussiéreux et
humides, ainsi que des vibrations trop importantes.
Tenez cet appareil à l’écart d’endroits où il risque d’êtres soumis à des températures ou des degrés d’humidité trop importants – tels des radiateurs, des poêles etc. Ne le placez jamais à un endroit fortement poussiéreux ou soumis à des vibrations qui pourraient entraîner des dommages mécaniques.
2. Ventilation
Veiller à garder une distance minimum de 10 cm entre l’unité et un mur pour que l’air dégagé par cette unité puisse se dissiper. De plus, veillez à ce que la distance entre cet amplificateur et d’autres unités soit suffisamment grande. Si vous logez cette unité dans un rack audio, laissez un espace de 10 cm entre dans la partie supérieure du rack et 1 cm sur les côtés. Retirez la face arrière du rack ou utilisez un rack ouvert. Si la chaleur ne peut pas se dissiper, le manque de ventilation peut provoquer un incendie.
3. Manipuler avec soin.
Ne laissez jamais tomber cet appareil et manipulez-le avec soin.
4. N’ouvrez jamais le boîtier et surtout ne tentez jamais de le réparer vous-même.
Ce produit ne contient pas de pièces pouvant être répa­rées par l’utilisateur. Confiez tout travail d’entretien à une service technique agréé par Yamaha. Notez qu’en ouvrant le boîtier, vous mettez automatiquement un terme aux conditions de garantie.
5. Veillez à éteindre cet appareil avant d’établir ou de défaire des connexions.
Il importe de mettre cet appareil hors tension avant d’y connecter ou de déconnecter des câbles afin d’éviter d’endommager cet appareil ou tout autre appareil utilisé.
6. Prudence avec les câbles.
Veillez à toujours déconnecter tous les câbles –y com­pris le cordon d’alimentation– en tirant sur les fiches. Ne tirez jamais sur les câbles.
7. Nettoyez avec un chiffon doux et sec.
N’utilisez jamais de benzène ou de diluant pour nettoyer le boîtier. Nettoyez-le avec un chiffon doux et sec.
8. Utilisez toujours la tension requise.
Vérifiez d’abord si les données concernant la tension en face arrière correspondent à la tension fournie par la prise à laquelle vous reliez cet appareil. Assurez-vous en outre que cette prise est capable de fournir suffisamment de courant pour alimenter votre système.

Table des matières

Commandes et fonctions .........................................2
Panneau avant ......................................................2
Panneau arrière ....................................................3
Modes: STEREO/P ARALLEL/BRIDGE.................4
Impedance des enceintes.....................................4
Connexion des enceintes ........................................5
Montage en rack ......................................................6
Montage dans un rack standard EIA .................... 6
Montage de quatre amplificateurs maximum avec
face arrière ouverte...............................................6
Montage de cinq amplificateurs ou plus ou lorsque
(avec moins de 4 amplificateurs) la face arrière ne
peut rester ouverte................................................6
Montage en “flightcase” ........................................ 7
Installation de l’amplificateur à tout autre endroit. 7
Fiche technique .......................................................8
Caractéristiques générales...................................8
Schéma................................................................. 9
Dimensions ...........................................................9
Graphiques de performance...............................10
En cas de probleme...............................................10
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