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POWER AMPLIFIER
Owner's Manual
Mode d'emploi
Bedienungsanleitung
Manual de instrucciónes
A CLIP B
SIGNAL
TEMP
15 15
PROTECTION 20 20
POWER
25 10 25 10
30 30
6 6
40 3 40 3
ON OFF 0 dB 0
EEEngine
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
English
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, guarantee-
ing 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.
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. 5. Make sure power is off before making or removing
Keep the unit away from locations where it is likely to be connections.
exposed to high temperatures or humidity -- such as Always turn the power OFF prior to connecting or
near radiators, stoves, etc. Also avoid locations which disconnecting cables. This is important to prevent dam-
are subject to excessive dust accumulation or vibration age to the unit itself as well as other connected equip-
which could cause mechanical damage. ment.
2. Ventilation 6. Handle cables carefully.
Allow a distance of 10 cm between the unit and the wall Always plug and unplug cables -- including the AC cord
so that heat generated from the unit will be released -- by gripping the connector, not the cord.
effectively. Also, allow enough space between the unit
and other devices. If you mount the unit in an audio rack, 7. Clean with a soft dry cloth.
keep a space of 10 cm on the top panel, and a space of Never use solvents such as benzine or thinner to clean
1 cm to the side panel. Remove the rear panel of the rack the unit. Wipe clean with a soft, dry cloth.
or open a vent hole. If heat release is inadequate, the unit
8. Always use the correct power supply.
will retain heat inside the unit, which may cause a fire.
Make sure that the power supply voltage specified on the
3. Avoid physical shocks. rear panel matches your local AC mains supply. Also
Strong physical shocks to the unit can cause damage. make sure that the AC mains supply can deliver more
Handle it with care. than enough current to handle all equipment used in your
system.
4. Do not open the case or attempt repairs or modifica-
tions 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.
Contents
Controls and Functions ............................................................. 2
Front Panel ........................................................................... 2
Rear Panel ........................................................................... 3
Modes: STEREO/PARALLEL/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
s Front Panel
2 3 4
A CLIP B
SIGNAL
TEMP
15 15
PROTECTION 20 20
POWER
25 10 25 10
30 30
6 6
40 3 40 3
ON OFF 0 dB 0
EEEngine
1 5 6
1 POWER switch and indicator 4 CLIP indicators
This is the main POWER switch. Press to power ON the These red LED indicators light up when the respective
amplifier. Press again to power OFF. The POWER channel's output signal distortion exceeds 1% (i.e. clip-
indicator lights up when the amplifier is powered ON. ping). Output signal clipping is usually due to excessive
input signal levels.
2 TEMP indicator
When the temperature of the heat sink exceeds 85 5 SIGNAL indicators
degrees Celsius, this indicator will light red. These green LED indicators light up when the respective
channel's output signal exceeds 2 Vrms. This is equiva-
3 PROTECTION indicator lent to 1/2 watt into 8, 1 W into 4.
This red LED indicator lights up for approximately 3
seconds when the amplifier is powered ON, indicating 6 Volume controls
that the soft-start protection system is working. No These volume controls allow you to adjust the volume
sound is output during soft-start up. If one of the protec- level in 31 steps in the range between dB and 0 dB.
tion systems is activated during normal use, this indica- To fix the volume setting by protecting the controls,
tor lights up and no sound is output. The speaker system install the included security cover over the controls and
is actually disconnected from the amplifier outputs when tighten the screws in the holes as shown below.
this indicator lights up. The protection systems are
activated when overheating occurs or a DC voltage is 15 15
present at the amplifier outputs. If the problem is cor- 20 20
rected, the protection systems deactivate automatically, 25 10 25 10
this indicator goes out, and normal amplifier operation is
resumed. 30 30
6 6
40 3 40 3
0 dB 0
2
s Rear Panel
1 2 3 4
INPUT SPEAKERS
(BRIDGE) CHANNEL B CHANNEL A
CHANNEL B CHANNEL A
(PARALLEL) (STEREO)
G G
BRIDGE 4-8/SP
(BRIDGE)
8-16/SP
STEREO
BRIDGE
STEREO PARALLEL MAX. OUTPUT 450W/4 (STEREO)
MAX. OUTPUT 900W/8 (BRIDGE)
1 INPUT terminals (CHANNEL A, B) 3 SPEAKERS terminals
Three types of balanced terminals for channels A and B For polarity in each mode, refer to the following dia-
are provided. gram.
Channel A input terminal is used in Bridge and Parallel
· STEREO, PARALLEL mode
mode.
· XLR-3-31 type connector SPEAKERS
CHANNEL B CHANNEL A
They are wired pin 1ground, pin 2hot (+), and pin 3 cold
(-).
Hot Ground STEREO
2 1
BRIDGE
3
Cold
· BRIDGE mode
· Phone jack SPEAKERS
CHANNEL B CHANNEL A
They are wired tiphot (+), ringcold (-), and sleeve
ground.
Ring
STEREO
BRIDGE
In BRIDGE mode, the (-) jacks of CHANNELS A and
Sleeve Tip B are not used.
The minimum impedance for the connected speaker
· Barrier strip system is specified in "Speaker Impedance" on page 4.
Hot (+), Cold (-) and Ground (G).
4 GND terminals
2 STEREO/BRIDGE/PARALLEL switch This is the grounding screw terminal. If hum or noise
This slide switch is used to set the amplifier operating occurs, ground (earth) the unit via this jack, or try
mode: STEREO, BRIDGE or PARALLEL. connecting it to the chassis of the mixer or preamp, etc.
For details on the functionality of each mode, refer to
"Modes" on page 4.
3
s Modes: STEREO/PARALLEL/BRIDGE
STEREO mode BRIDGE mode
In this mode, channels A and B operate independently In this mode, the CHANNEL A input signal will be
(as a conventional stereo amp). output from the BRIDGE output jacks. In this case, use
The CHANNEL A input signal will be output from the the front panel (channel) A volume control to adjust the
CHANNEL A output jacks, and the CHANNEL B input volume.
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 volumes can be adjusted independently.
s SPEAKER IMPEDANCE
In STEREO and PARALLEL modes, the minimum load
(=speaker) impedance is 4. In BRIDGE mode it is 8.
Make sure that the impedance does not fall below this
specified impedance.
STEREO mode connections BRIDGE mode connections
SPEAKERS SPEAKERS
CHANNEL B CHANNEL A CHANNEL B CHANNEL A
BRIDGE BRIDGE
Set to STEREO Set to BRIDGE
STEREO STEREO
BRIDGE BRIDGE
STEREO PARALLEL MAX. OUTPUT 450W/4 (STEREO) STEREO PARALLEL MAX. OUTPUT 450W/4 (STEREO)
MAX. OUTPUT 900W/8 (BRIDGE) MAX. OUTPUT 900W/8 (BRIDGE)
+ + +
4 min. 4 min. 8 min.
Speaker System Speaker System
PARALLEL mode connections
SPEAKERS
CHANNEL B CHANNEL A
BRIDGE
Set to PARALLEL
STEREO
BRIDGE
STEREO PARALLEL MAX. OUTPUT 450W/4 (STEREO)
MAX. OUTPUT 900W/8 (BRIDGE)
+ +
4 min. 4 min.
Speaker System
4
Caution for Speaker Connection
1. Turn off the POWER switch. · Speaker fuse
The output capacity of your amplifier is very high: 460
2. Remove the cover attachment screw(s) and remove the W+460 W (8) in stereo and 1240 W (8) in monaural
protective cover from the speaker terminals. 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.
Screw 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.
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 system
Power amplifier
speaker terminals and tighten the terminals to securely _ +
+ _
clamp the wires.
Refer to page 3 for speaker porality. Fuse
Use the following formula to determine the fuse capacity
according to the speaker's input capacity.
10 mm
Po = I R I = Po/R
2
P0 [W] : Speaker's continuous input capacity (noise or
RMS)
R [] : Speaker's nominal impedance
I [A] : Required fuse capacity
At this time make sure that the bare ends of the speaker
cables do not extend from the terminals in such a way ex.) Speaker's continuous input capacity : 100 W
that they touch the chassis. 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.
4. Reattach the protective cover over the speaker termi-
nals.
5
Rack Mounting
s 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
Unit: mm 44
s Mounting four or fewer amps in s Mounting five or more amps, or
an open-backed rack when (even with four or fewer
Install the ventilation panel above the amps, as shown in units) the back of the rack cannot
the following figure. be left open
Install ventilation panels above and below each amp, as
Ventilation panel shown in the following figure.
(attach to the front
or rear of the rack)
A CLIP B
SIGNAL
TEMP
15 15
PROTECTION 20 20
POWER
25 10 25 10
30 30
6 6
40 3 40 3
ON OFF 0 dB 0
EEEngine
A CLIP B
SIGNAL
TEMP
15 15
PROTECTION 20 20
POWER A CLIP B
25 10 25 10
SIGNAL
TEMP
30 30 15 15
PROTECTION 20 20
6 6
POWER
40 3 40 3 25 10 25 10
ON OFF 0 dB 0 30 30
EEEngine 6 6
40 3 40 3
ON OFF 0 dB 0
EEEngine
A CLIP B
SIGNAL
TEMP
15 15
PROTECTION 20 20
POWER
25 10 25 10
30 30
6 6
40 3 40 3
ON OFF 0 dB 0
EEEngine
A CLIP B
SIGNAL
TEMP
15 15
PROTECTION 20 20
POWER
25 10 25 10
30 30
6 6
40 3 40 3
ON OFF 0 dB 0
EEEngine
A CLIP B
SIGNAL
TEMP
15 15
PROTECTION 20 20
POWER
25 10 25 10
30 30
6 6
40 3 40 3
ON OFF 0 dB 0
EEEngine
A CLIP B
SIGNAL
TEMP
15 15
PROTECTION 20 20
POWER
25 10 25 10
30 30
6 6
40 3 40 3
ON OFF 0 dB 0
EEEngine
6
s 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.
(Side View) (Rear View)
Front Completely open
INPUT SPEAKERS
Air intake Air exhaust
(BRIDGE) CHANNEL B CHANNEL A
CHANNEL B CHANNEL A
(PARALLEL) (STEREO)
G G
BRIDGE 4-8/SP
(BRIDGE)
8-16/SP
STEREO
BRIDGE
STEREO PARALLEL MAX. OUTPUT 450W/4 (STEREO)
MAX. OUTPUT 900W/8 (BRIDGE)
s Positioning the Housed Amplifier
Place the case so that the ventilation airflow paths are not blocked.
Front
Less than 10 cm
Front
NO NO
7
Specifications
s 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
0.05%
20 Hz~20 kHz, Half Power 8/BRIDGE
Frequency Response 10 Hz~50 kHz, +0, 1 dB
Intermodulation distortion (IMD) 4~8/STEREO
0.05%
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
80 dB
IHF-A network
SN Ratio Input 600 shunt 12.7 kHz LPF
105 dB 104 dB 101 dB
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)
Volume (31 position dB calibrated)
Rear Panel Mode switch (STEREO/BRIDGE/PARALLEL)
Connectors Input Barrier strip terminal
XLR-3-31 type
1/4-inch phone jack (balanced)
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
TEMP (heatsink temp 95°C)
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 dB=0.775 Vrms, Half Power=1/2 Power Output Level (Rated Power)
Specifications subject to change without notice.
8
s Block Diagram
SIGNAL
Ach Power Amp
CHANNEL A
A
PC Limiter
CHANNEL A
(BRIDGE)
(PARALLEL)
CLIP
G Temperature PROTECTION
Protection
INPUT Sensor SPEAKERS
Circuit TEMP
G (Heat Sink)
CLIP
CHANNEL B
SIGNAL
PARALLEL Bch Power Amp
BRIDGE
STEREO CHANNEL B
B
PC Limiter
s Dimensions
26
61.2
292
379.6
D:455
55.2
4.4
45
424
W:480
H:103.5
88
15.5
308
Unit: mm
9
s Performance Graphs
Mode:STEREO Mode:STEREO
P4500 Both ch Driven P3200 Both ch Driven
RL=4, f=1kHz RL=4, f=1kHz
5k 5k
Power Consumption [W]
Power Consumption [W]
1k 1k
100 100
20 20
1 10 100 1k 1 10 100 1k
Output Power [W] Output Power [W]
Mode:STEREO
P1600 Both ch Driven
RL=4, f=1kHz
5k
Power Consumption [W]
1k
100
20
1 10 100 1k
Output Power [W]
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
There is a short at a speaker
Locate and correct the cause
terminal, amplifier terminal,
of the short. The PC limiter circuit
or wire.
CLIP indicator lights. operates to protect the power
Use a speaker system with transistors.
The amplifier load is exces-
an impedance of at least 4
sive.
(stereo) or 8 (bridge).
Check the ventilation slots,
The heat sink temperature Warning by the TEMP
TEMP indicator lights. and improve the airflow
has exceed 85°C. indicator.
around the amplifier.
Check the amplifier ventila-
tion conditions and take The thermal protection circuit
The heat sink temperature
appropriate measures to operates to protect the power
has exceeded 95°C.
improve airflow around the transistors.
PROTECTION indicator amplifier.
lights.
A DC voltage of +/2 V or
Consult your dealer or
greater was generated in the The relay operates to protect
nearest Yamaha service
power amplifier's output the speaker system.
center.
circuit.
10
P4500/3200/1600 Mode d'emploi
Nous vous remercions d'avoir opté pour un amplificateur de 3. Manipuler avec soin.
FRANÇAIS
puissance Yamaha P4500/3200/1600. Ne laissez jamais tomber cet appareil et manipulez-le
Cette série d'amplificateurs audio est le fruit d'une longue avec soin.
expérience que Yamaha a accumulée en fabricant du matériel 4. N'ouvrez jamais le boîtier et surtout ne tentez jamais
PA ainsi que d'une attention traditionnelle portée à tous les de le réparer vous-même.
détails de la conception d'un circuit. Ces amplificateurs Ce produit ne contient pas de pièces pouvant être répa-
n'offrent donc pas seulement une performance sortant de rées par l'utilisateur. Confiez tout travail d'entretien à
l'ordinaire mais également une qualité, une fiabilité et une une service technique agréé par Yamaha. Notez qu'en
solidité qui garantit la meilleure reproduction audio possible. ouvrant le boîtier, vous mettez automatiquement un
Voici les caractéristiques principales de la série P4500/ terme aux conditions de garantie.
3200/1600: 5. Veillez à éteindre cet appareil avant d'établir ou de
· Trois types d'entrées (connecteurs symétriques de type défaire des connexions.
XLR, des jacks symétriques et des connecteurs pour câbles Il importe de mettre cet appareil hors tension avant d'y
dénudés) ainsi que des sorties à bornes de connexion ce connecter ou de déconnecter des câbles afin d'éviter
qui permet d'insérer cet amplificateur dans n'importe d'endommager cet appareil ou tout autre appareil utilisé.
quel type d'installation. 6. Prudence avec les câbles.
· Trois modes: Le mode STEREO qui permet aux canaux A Veillez à toujours déconnecter tous les câbles y com-
et B d'opérer indépendamment, le mode PARALLEL qui pris le cordon d'alimentation en tirant sur les fiches. Ne
reproduit un signal mono via les deux circuits d'amplifica- tirez jamais sur les câbles.
tion et le mode BRIDGE qui permet de transformer l'appa- 7. Nettoyez avec un chiffon doux et sec.
reil en un amplificateur à un canal de très haute puissance. N'utilisez jamais de benzène ou de diluant pour nettoyer
· Un témoin SIGNAL et CLIP par canal. le boîtier. Nettoyez-le avec un chiffon doux et sec.
· Un témoin PROTECTION qui indique le statut du circuit 8. Utilisez toujours la tension requise.
de protection tel que la protection lors de la mise sous/hors Vérifiez d'abord si les données concernant la tension en
tension, l'étouffement de la sortie et le circuit de détection face arrière correspondent à la tension fournie par la
de courant continu. Le témoin TEMP s'allume lorsqu'il y prise à laquelle vous reliez cet appareil. Assurez-vous en
a surchauffe du radiateur dissipateur de chaleur. outre que cette prise est capable de fournir suffisamment
de courant pour alimenter votre système.
· Un ou plusieurs ventilateur(s) à vitesse variable d'un
niveau de bruit très bas garantissent une excellente fiabi-
lité même dans les conditions les plus difficiles. Table des matières
Ce manuel couvre les modèles P4500, P3200 et P1600. Veuillez
le lire complètement pour éviter toute erreur de manipulation et Commandes et fonctions ......................................... 2
pouvoir jouir de votre amplificateur durant de longues années. Panneau avant ...................................................... 2
Panneau arrière .................................................... 3
Précautions Modes: STEREO/PARALLEL/BRIDGE ................. 4
Impedance des enceintes ..................................... 4
1. Evitez des endroits excessivement poussiéreux et
Connexion des enceintes ........................................ 5
humides, ainsi que des vibrations trop importantes.
Tenez cet appareil à l'écart d'endroits où il risque d'êtres Montage en rack ...................................................... 6
soumis à des températures ou des degrés d'humidité trop Montage dans un rack standard EIA .................... 6
importants tels des radiateurs, des poêles etc. Ne le Montage de quatre amplificateurs maximum avec
placez jamais à un endroit fortement poussiéreux ou face arrière ouverte ............................................... 6
soumis à des vibrations qui pourraient entraîner des Montage de cinq amplificateurs ou plus ou lorsque
dommages mécaniques. (avec moins de 4 amplificateurs) la face arrière ne
2. Ventilation peut rester ouverte................................................ 6
Veiller à garder une distance minimum de 10 cm entre Montage en "flightcase" ........................................ 7
l'unité et un mur pour que l'air dégagé par cette unité Installation de l'amplificateur à tout autre endroit . 7
puisse se dissiper. De plus, veillez à ce que la distance entre Fiche technique ....................................................... 8
cet amplificateur et d'autres unités soit suffisamment
Caractéristiques générales ................................... 8
grande. Si vous logez cette unité dans un rack audio, laissez
Schéma ................................................................. 9
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 Dimensions ........................................................... 9
utilisez un rack ouvert. Si la chaleur ne peut pas se dissiper, Graphiques de performance ............................... 10
le manque de ventilation peut provoquer un incendie. En cas de probleme ............................................... 10
Commandes et fonctions
s Panneau avant
2 3 4
A CLIP B
SIGNAL