Yamaha P-4500 Owners manual

POWER AMPLIFIER

Owner's Manual
Mode d'emploi
Bedienungsanleitung
Manual de instrucciónes

TEMP
PROTECTION
POWER

ON OFF

EEEngine

15

CLIP

SIGNAL

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6

40

3

–dB∞ 0 ∞ 0

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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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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 8Ω, 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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61

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–dB∞ 0 ∞ 0

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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/4Ω (STEREO)
MAX. OUTPUT 900W/8Ω (BRIDGE)

(STEREO)
4-8Ω/SP
(BRIDGE)
8-16Ω/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

y

y

y

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 4Ω. 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) A volume control to adjust the
volume.

BRIDGE mode connections

SPEAKERS

CHANNEL B CHANNEL A

Set to STEREO

BRIDGE

STEREO PARALLEL

MAX. OUTPUT 450W/4Ω (STEREO)
MAX. OUTPUT 900W/8Ω (BRIDGE)

–+

4Ω min. 4Ω min.

Speaker S

PARALLEL mode connections

SPEAKERS

CHANNEL B CHANNEL A

Set to PARALLEL

BRIDGE

STEREO PARALLEL

MAX. OUTPUT 450W/4Ω (STEREO)
MAX. OUTPUT 900W/8Ω (BRIDGE)

– +

STEREO
BRIDGE

STEREO
BRIDGE

stem

–+

– +

Set to BRIDGE

BRIDGE

STEREO PARALLEL

SPEAKERS

CHANNEL B CHANNEL A

STEREO
BRIDGE

MAX. OUTPUT 450W/4Ω (STEREO)
MAX. OUTPUT 900W/8Ω (BRIDGE)

– +

8Ω min.

Speaker S

stem

4Ω min. 4Ω min.

Speaker S

stem

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 (8Ω) in stereo and 1240 W (8Ω) in monaural
on the P4500; 340 W+340 W (8Ω) in stereo and 880 W
(8Ω) in monaural on the P3200; 160 W+160 W (8Ω) in
stereo and 400 W (8Ω) 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.

Wireshouldnot
touchthechassis.

4. Reattach the protective cover over the speaker termi­nals.

P0 [W] : Speaker’s continuous input capacity (noise or

RMS)

R [Ω] : Speaker’s nominal impedance
I [A] : Required fuse capacity

ex.) Speaker’s continuous input capacity : 100 W

Speaker’s impedance : 8Ω

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

EEEngine

TEMP
PROTECTION
POWER

ON OFF

EEEngine

CLIP

AB

SIGNAL

15

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25

10

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30

6

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3

–dB∞ 0 ∞ 0

CLIP

AB

SIGNAL

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40

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–dB∞ 0 ∞ 0

CLIP

AB

SIGNAL

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3

–dB∞ 0 ∞ 0

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3

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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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25

25

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30

30

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–dB∞ 0 ∞ 0

CLIP

AB

SIGNAL

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–dB∞ 0 ∞ 0

CLIP

AB

SIGNAL

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30

30

6

40

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–dB∞ 0 ∞ 0

CLIP

AB

SIGNAL

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30

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–dB∞ 0 ∞ 0

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3

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■ 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/4Ω (STEREO)
MAX. OUTPUT 900W/8Ω (BRIDGE)

(STEREO)
4-8Ω/SP
(BRIDGE)
8-16Ω/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) 8Ω/STEREO 460 W + 460 W 340 W + 340 W 160 W + 160 W

20 Hz~20 kHz 4Ω/STEREO 620 W + 620 W 440 W + 440 W 200 W + 200 W

0.05% 8Ω/BRIDGE 1240 W 880 W 400 W
1 kHz 8Ω/STEREO 520 W + 520 W 370 W + 370 W 175 W + 175 W

0.05% 4Ω/STEREO 720 W + 720 W 520 W + 520 W 230 W + 230 W
8Ω/BRIDGE 1440 W 1040 W 460 W

1 kHz, 20 ms, no clip 2Ω/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) 4~8Ω/STEREO

20 Hz~20 kHz, Half Power 8Ω/BRIDGE
Frequency Response 10 Hz~50 kHz, +0, –1 dB
Intermodulation distortion (IMD) 4~8Ω/STEREO

7 kHz: 60 Hz, 1: 4, Half Power 8Ω/BRIDGE
Damping factor 1 kHz, 8Ω 200
Input Impedance 30 kΩ/Balance, 15 kΩ/Unbalanced
Residual Noise Vol. min. 12.7 kHz LPF

IHF-A network

SN Ratio Input 600Ω shunt 12.7 kHz LPF

IHF-A network

Channel Separation Half Power, 8Ω, Vol. max. 65 dB, 20 Hz~20 kHz

input 600Ω shunt 75 dB, 1 kHz

Slew Rate STEREO >30 V/µ sec

8Ω full swing BRIDGE >50 V/µ sec
Sensitivity (Vol. max.) Rated Power into 8Ω +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 ≤ 1Ω
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=4Ω, f=1kHz

P3200P4500

5k

Mode:STEREO
Both ch Driven
RL=4Ω, 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=4Ω, 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 4Ω
(stereo) or 8Ω (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