Teac A-03 User Manual [en, fr, de]
D01049720B
A-03
Power Amplifier
OWNER’S MANUAL ................... 3
MANUEL DU PROPRIÉTAIRE .... 11
BEDIENUNGSANLEITUNG ....... 19
2
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT
REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS
INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
The lightning flash with arrowhead symbol, within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated ”dangerous voltage˝ within the
product's enclosure that may be of sufficient magnitude to
constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the appliance.
IMPORTANT SAFETY INSTRUCTIONS
1) Read these instructions.
2) Keep these instructions.
3) Heed all warnings.
4) Follow all instructions.
5) Do not use this apparatus near water.
6) Clean only with dry cloth.
7) Do not block any ventilation openings. Install in accordance with
the manufacturer's instructions.
8) Do not install near any heat sources such as radiators, heat
registers, stoves, or other apparatus (including amplifiers) that
produce heat.
9) Do not defeat the safety purpose of the polarized or groundingtype plug. A polarized plug has two blades with one wider than
the other. A grounding type plug has two blades and a third
grounding prong. The wide blade or the third prong are provided
for your safety. If the provided plug does not fit into your outlet,
consult an electrician for replacement of the obsolete outlet.
10) Protec t the power cord from being walk ed on or pinched
par ticularly at plugs, convenience receptacles, and the point
where they exit from the apparatus.
11) Only use attachments/accessories specified by the manufacturer.
12) Use only with the cart, stand, tripod, bracket,
or table specified by the manufacturer, or sold
with the apparatus. When a cart is used, use
caution when moving the cart/apparatus
combination to avoid injury from tip-over.
13) Unplug this appar atu s during li g htning
storms or when unused for long periods of time.
14) Refer all servicing to qualified service personnel. Servicing is
required when the apparatus has been damaged in any way, such
as power-supply cord or plug is damaged, liquid has been spilled
or objects have fallen into the apparatus, the apparatus has been
exposed to rain or moisture, does not operate normally, or has
been dropped.
Do not expose this apparatus to drips or splashes. <
Do not place any objects filled with liquids, such as vases, on the <
apparatus.
Do not install this apparatus in a confined space such as a book <
case or similar unit.
The apparatus draws nominal non-operating power from the <
AC outlet with its POWER or STANDBY/ON switch not in the ON
position.
The apparatus should be located close enough to the AC outlet so <
that you can easily grasp the power cord plug at any time.
An apparatus with Class < I construction shall be connected to an
AC outlet with a protective grounding connection.
The appliance coupler is used as the disconnect device, the <
disconnect device shall remain readily operable.
If the product uses batteries (including a battery pack or installed <
batteries), they should not be exposed to sunshine, fire or
excessive heat.
Caution should be taken when using earphones or headphones <
with the product because excessive sound pressure (volume) from
earphones or headphones can cause hearing loss.
WARNING: TO PREVENT FIRE OR SHOCK HAZARD,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR
MOISTURE.
CAUTION
< DO NOT REMOVE THE EXTERNAL CASES OR CABINETS TO EXPOSE
THE ELECTRONICS. NO USER SERVICEABLE PARTS ARE INSIDE!
< IF YOU ARE EXPERIENCING PROBLEMS WITH THIS PRODUC T,
CONTACT TEAC FOR A SER VICE REFERRAL. DO NOT USE THE
PRODUCT UNTIL IT HAS BEEN REPAIRED.
For U.S.A.
This equipment has been tested and found to comply with the
limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection
against harmful inter ference in a residential installation. This
equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the
in s tr uc ti on s, may ca us e h a rm fu l int e rfe r en ce to rad io
communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of
the following measures:
• Reorient or relocate the equipment and/or the receiving
antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different
from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for
help.
CAUTION
Changes or modifications to this equipments not expressly
approved by TEAC CORPORATION for compliance will void the
user's warranty.
CAUTION Regarding Placement
To maintain proper ventilation, be sure to leave a space around
the unit (from the largest outer dimensions including projections)
equal to, or greater than, shown below.
Left and Right Panels: 20 cm (8˝)
Rear Panel: 10 cm (4˝)
Top Panel: 5 cm (2˝)
3
Contents
Features
Thank you for choosing Esoteric. Read this manual carefully to
get the best performance from this unit.
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Features .............................................................3
Before use ...........................................................4
Front panel features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Rear panel features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Speaker connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Connection example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Troubleshooting ...................................................10
Specifications ......................................................10
For European Customers
Information for Users on Collection and Disposal of Old
Equipment and used Batteries
Thes e symb o l s on th e p roduc ts, pa cka g i n g, a nd/or
accompanying do cuments mean that used electrical and
electronic products and batteries should not be mixed with
general household waste. For proper treatment, recovery and
recycling of old products and used batteries, please take them
to applicable collection points, in accordance with your national
legislation and the Directives 2002/96/EC and 2006/66/EC.
Pure class A amplification and triple separate
transformer
Pure class A amplification is employed and it ensures high signal
linearity.
Inher i ting th e de sign con c e pt of A-80 , th ree separ a ted
transformers are mounted on the unit: two on the power section
of the current amplification stage for the left and right channels;
one on that of the voltage amplification stage.
WBT's speaker terminals
The speaker terminals are WBT-0710 Copper (Cu), which use a very
high purity of material from the WBT nextgen series.
BTL connection
BTL (Bridged Transformer Less) connection, using two bridgeconnected amplifiers, enables to get output, about four times as
large as that in the single use, and it is not necessary to use
transformers.
The unit can be used as a monaural amplifier by changing the
OUTPUT MODE switch on the rear panel to “BTL”, which makes a
BTL connection with the left and right channels.
2 system inputs
This A-03 is equipped with 2 input system terminals, 1 XLR and 1
RCA, which can be selected with the switch on the rear panel.
ENGLISH
By disposing of these products and batteries correctly, you
will help to save valuable resources and prevent any potential
negative effects on human health and the environment which
could otherwise arise from inappropriate waste handling.
For more information about collection and recycling of old
products and batteries, please contact your local municipality,
your waste disposal service or the point of sale where you
purchased the items.
Information on Disposal in other Countries outside the
European Union
These symbols are only valid in the European Union. If you wish
to discard these items, please contact your local authorities or
dealer and ask for the correct method of disposal.
Note for the battery symbol (bottom right two symbol
examples):
This symbol might be used in combination with a chemical
symbol. In this case it complies with the requirement set by the
Directive for the chemical involved.
Before use
What's in the box
Please confirm that the following accessories are in the box you open
it.
Power cord x 1
Felt pads x 4
Power plug support bracket x 1
Screw for the power plug support bracket x 2
Owner's manual x 1
Warranty card x 1
Read this before operation
< Place the unit in a stable location near the audio system that you
will use.
< Do NOT place any objects on this unit.
Do NOT cover this unit with a cloth.
Do NOT place this unit on a thick-carpet.
< As the unit may become warm during operation, always leave
sufficient space around the unit for ventilation.
The ventilation holes should not be covered. Make sure there is at
least 20 cm (8˝) of space above and at least 5 cm (2˝) of space on
each side of the unit.
< Do NOT place anything such as a CD, CD-R, cassette tape etc. on
top of the unit.
< The voltage supplied to the unit should match the voltage as
printed on the rear panel. If you are in any doubt regarding this
matter, consult an electrician.
< Choose the installation location of your unit carefully. Avoid
placing it in direct sunlight or close to a source of heat. Also avoid
locations subject to vibrations and excessive dust, heat, cold or
moisture.
< Do not open the amplifier cabinet as this might result in damage
to the circuitry or electrical shock. If a foreign object should get
into the unit, contact your dealer or service company as soon as
possible and do not use the unit until the foreign object has been
removed.
< When removing the power plug from the wall outlet, always pull
directly on the plug, never yank on the cord.
< Keep this manual in a safe place for future reference.
< This unit is a class A power amplifier and emits more heat than
other types of amplifiers. Install it separately with taking 20 cm or
more space from walls and do not use a rack for installation.
When you need to install the unit in a rack, use one which has
ventlations and take care of temperature of the unit.
Placement of the unit
High-quality hardened tool steel is used for the pin-point feet,
securely attached to the bottom of the unit.
Although the outer feet may appear loose, the weight of the unit
causes them to become firm and secure. The design effectively
damps and reduces vibration.
Pin-point foot
Bottom plate of
Steel foot
Cover foot
< Be careful to avoid injury when moving the unit due to its weight.
Get someone to help you if necessary.
< To protect the supporting furniture surface, you may stick the felt
pads supplied with the unit to the bottom of the metal feet.
Cover foot retaining screws
the unit
On the power plug support bracket
The power plug support bracket is supplied for ensuring the
connection of a heavy power cord such as ESOTERIC Power Cable
7N-PC9100 MEXCEL and 7N-PC7100 by supporting their plug.
AC Inlet
Screw (supplied)
Attach the bracket and adjust its position according to the size of
the plug of the power cable, and fix it firmly with the supplied
screws.
Power cord
Support bracket
Maintenance
If the surface of the unit gets dirty, wipe with a soft cloth or use
diluted neutral cleaning liquid. Be sure to remove any fluid
completely. Do not use thinner, benzine (naphtha) or alcohol as
they may damage the surface of the unit.
< Do not install the unit upside-down or one of the sides down.
4
Front panel features
BA
ENGLISH
A
WARM-UP switch
Use this switch to turn on/off the WARM-UP mode.
When the WARM-UP mode is on, the power amplifier circuits is
warmed up in low power consumption and the power of the
unit speedily becomes stable.
The WARM-UP mode is effective only when the unit is turned on.
The ring around the POWER switch lights in green when you
turn on the WARM-UP mode.
No sound comes out while warming up the unit.
Pressing the WARM-UP switch while warming up the unit turns
off the WARM-UP mode. The ring around the POWER switch will
flash in blue for a few seconds. No sound comes out while it is
flashing. When the flashing stops, the power is turned on and
sound will start to come out.
For enjoying better sound
It is recommended to use the WARM-UP mode for more than
30 minutes before playing back music. Using WARM-UP mode
assists stable drive of internal circuits and brings out the
performance of this unit fully.
B
POWER
Use this switch to turn the unit on and off.
The ring around the switch flashes in blue and no sound comes
out for a few seconds after turning on the power. Wait until the
flashing stops.
< When the protection circuit is in operation, the ring around the
POWER switch flashes in blue and no sound comes out.
< Follow the steps below when you turns on the audio system
including this unit to protect the speakers.
1 Turn the volume of the preamplifier to the minimum.
2 Turn on the sound source components.
3 Turn on the preamplifier.
4 Turn on this unit.
Follow the steps below when you turns off the system.
1 Turn the volume of the preamplifier to the minimum.
2 Turns off this unit.
3 Turns off the preamplifier.
4 Turns off the sound source components.
< Because the unit is equipped with a high capacity transformer
and capacitor, sound may occur from the power transformer
when you turn on the unit. This is normal.
< Once the unit is turned off, wait for at least 2 seconds to turn it
again.
5
Rear panel features
SPEAKER
CLASS 2 WIRING
XLR R RCA
R
BTL
R
XLR LRCA
L
SPEAKER
INPUTS
SIGNAL
IN
GND
CLASS 2 WIRING
INPUT SELECTOR
OUTPUT MODE
BTL
BTL
BTLSTEREO
XLR
RCA
L
A B C
D DEFEF G
A
AC inlet
Use the supplied Esoteric power cord. Use of other power cords
may result in fire or electric shock. Unplug the power cord when
you are not going to use the unit for an extended period of time.
B
INPUT SELECTOR switch
Use this switch to change the input between RCA and XLR.
Do NOT change the input while the power of this unit is on.
C
OUTPUT MODE switch
Choose “STEREO” when you use this unit as a stereo power
amplifier.
Choose “BTL” when you use this unit as a monaural power
amplifier.
You cannot connect the speakers for the both mode at the same
time.
D
SPEAKER terminals
Connect the – terminal of the unit to the – terminal of the
speaker and the + terminal of the unit to the + terminal of the
speaker using speaker cords.
< When you choose “BTL” as the output mode, connect the BTL +
terminal to the + terminal of the speaker and the BTL – terminal
to the – terminal of the speaker.
< Connect 4Ω or higher impedance speakers.
< The metal portions of the two separate wires (Positive and
negative), should not touch each other or an electrical short can
occur.
Shorted wires can create a fire hazard or induce a failure in your
equipment.
< Do not connect two or more amplifiers to one speaker.
E
RCA input terminals
Connect the terminals to the output terminals on a preamplifier
using RCA audio cables.
Slide the INPUT SELECTOR switch on the rear panel to “RCA”
when you use the terminals.
< Be sure to insert each plug securely. To prevent hum and noise,
avoid bundling the signal interconnection cables together with
the AC power cord or speaker cables.
6
Speaker connection
F
XLR input terminal
Connect the terminals to the output terminals on a preamplifier
using XLR balanced cables.
Slide the INPUT SELECTOR switch on the rear panel to “XLR”
when you use the terminals.
< Be sure to insert each plug securely. To prevent hum and noise,
avoid bundling the signal interconnection cables together with
the AC power cord or speaker cables.
< If you are using balanced connectors, push in the XLR plug until
the lever clicks. To remove the XLR plug, hold the lever and pull
out the plug.
< The pin assignment of the XLR input terminal is #2 HOT. Use the
corresponding cables for correct polarity.
G
SIGNAL GND connection
Use a commercially available jacketed cable (PVC-covered cord
or others) to connect the signal ground terminal on the unit to
the signal ground of other components.
< Note that this is NOT an electrical safety ground (earth).
About the speaker terminal
When your speaker cable is bare wire:
Twist the strands of the stripped wires tightly together.
< The thickness of wires should be less than 4 mm (1/8˝).
When your speaker cable has spades:
Loosen the terminal and insert the spade into the terminal. Then
turn the terminal clockwise to tighten it.
ENGLISH
< The inside diameter of spades should be 6 mm or more and
outside diameter of spades should be 13.5 mm or less.
13.5 mm or less
6 mm or more
Protection circuits
This unit is equipped with an output short-circuit protection
circuit, an overcurrent protection circuit and a direct current
protection circuit.
The ring around the POWER switch flashes in blue or flashes in
blue and violet when the protection circuit is operating.
< The speaker cables may short out when the ring around the
POWER switch flashes in blue. Turn off the unit and check your
speaker connections.
< The temperature inside the unit may be too high when the ring
around the POWER switch flashes in blue and violet. Turn off the
unit and wait for the temperature to decrease (10 to 20 minutes
suggested), or place this unit in a well-ventilated area.
Connection using speaker cables with banana plugs
Tighten the terminal and insert a banana plug.
For European customers:
In accordance with European safety regulations, it is not possible
to connect banana plugs into the speaker terminals on European
models.
The holes into which banana plugs are inserted have been
covered with black caps. Connect the speakers using spades or
bare wires.
If the black caps become separated from the terminals, return
them to their original position.
7
8
PREOUT
RL
1. COMMON
2. HOT (+)
3. COLD (−)
SPEAKER
CLASS 2 WIRING
XLR R RCA
R
BTL
R
XLR LRCA
L
SPEAKER
INPUTS
SIGNAL
IN
GND
CLASS 2 WIRING
INPUT SELECTOR
OUTPUT MODE
BTL
BTL
BTLSTEREO
XLR
RCA
L
OUTPUT MODE
BTL STEREO
Connection example
This is an example when using this unit as a stereo power amplifier.
CAUTION:
< Switch off the power to all equipment before making connections.
< Read the instructions of each component you intend to use with this unit.
Right speaker Left speaker
Wall socket
Power cord
XLR pin
assignment:
XLR audio cable
RCA audio cable
Connect a pair of
these cables.
A-03
Preamplifier
ENGLISH
9
PREOUT
RL
1. COMMON
2. HOT (+)
3. COLD (−)
SPEAKER
CLASS 2 WIRING
XLR R RCA
R
BTL
R
XLR L RCA
L
SPEAKER
INPUTS
SIGNAL
IN
GND
CLASS 2 WIRING
INPUT SELECTOR
OUTPUT MODE
BTL
BTL
BTLSTEREO
XLR
RCA
L
OUTPUT MODE
BTL STEREO
Q
This is an example when using this unit as a monaural power amplifier for the left channel.
CAUTION:
< Switch off the power to all equipment before making connections.
< Read the instructions of each component you intend to use with this unit.
CAUTION for speaker connections
Left speaker Wall socket
A loose cable connection may cause the
bare wires or the spade terminal to come
in contact with other metallic parts or the
unit's enclosure. Make sure of a secure
connection.
Sparks may develop, causing failures,
electric shock or burns if the bare wires or
th e spa de terminal at the end of the
speaker cables come in contact with other
metallic parts or the unit's enclosure.
Power cord
XLR pin
assignment:
Connect to the right
channel when using this
unit as the right channel
power amplifier.
XLR audio cable
RCA audio cable
Connect one of these
A-03
cables.
Preamplifier
Loading...