Teac A-02 User Manual [en, fr, de]
D01145620C
A-02
Power Amplifier
OWNER’S MANUAL .................... 4
MODE D’EMPLOI .......................14
BEDIENUNGSANLEITUNG .........24
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.
o Do not expose this apparatus to drips or splashes.
o Do not place any objects filled with liquids, such as vases, on the
apparatus.
o Do not install this apparatus in a confined space such as a book
case or similar unit.
o The apparatus draws nominal non-operating power from the
AC outlet with its POWER or STANDBY/ON switch not in the ON
position.
o The apparatus should be located close enough to the AC outlet so
that you can easily grasp the power cord plug at any time.
o The mains plug is used as the disconnect device, the disconnect
device shall remain readily operable.
o Products with Class © construction are equipped with a power
supply cord that has a 3-prong grounding plug. The cord of such
a product must be plugged into an AC outlet that has a protective
grounding connection.
o If the product uses batteries (including a battery pack or installed
batteries), they should not be exposed to sunshine, fire or excessive
heat.
o 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.
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
grounding-type 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) Protect the power cord from being walked on or pinched
particularly 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 apparatus during lightning 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.
WARNING: TO PREVENT FIRE OR SHOCK HAZARD,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR
MOISTURE.
CAUTION
o DO NOT REMOVE THE EXTERNAL CASES OR CABINETS TO EXPOSE
THE ELECTRONICS. NO USER SERVICEABLE PARTS ARE WITHIN.
o IF YOU ARE EXPERIENCING PROBLEMS WITH THIS PRODUCT,
CONTACT ESOTERIC FOR A SERVICE REFERRAL. DO NOT USE THE
PRODUCT UNTIL IT HAS BEEN REPAIRED.
3
China RoHS
A-02
o The information in the following table is only applicable to products for sale in the People’s Republic of China.
o The products sold in the European area are manufactured in accordance with the European RoHS Directive.
o Les informations contenues dans le tableau suivant sont applicables uniquement aux produits en vente en République populaire de
Chine.
o Les produits vendus en Europe sont fabriqués conformément avec la directive européenne RoHS.
o La información de la siguiente tabla se aplica únicamente a los productos de venta en la República Popular China.
o Los productos vendidos en el espacio europeo se fabrican en conformidad con la directiva europea RoHS.
Contents What’s in the box
Thank you for choosing ESOTERIC. Read this manual carefully
to get the best performance from this unit.
What’s in the box ....................................................4
Before Use ...........................................................5
Identifying the Parts .................................................6
Speaker Connections ................................................8
Connection Examples (Using as a Stereo Power Amplifier) . . . . . . . . . . . 9
Connection Examples (Using as a Monaural Power Amplifier) . . . . . . . 10
Turning On and Off the Audio System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Troubleshooting ....................................................12
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Rear Panel Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
What’s in the box
Check to be sure the box includes all the supplied accessories shown
below.
Please contact the store where you purchased this unit if any of these
accessories are missing or have been damaged during transportation.
Power cord x 1
Felt pads x 4
o To protect the supporting furniture surface, you may stick the
felt pads to the bottom of the feet.
Power plug support bracket x 1
Screw for the power plug support bracket x 2
Owner’s manual (this document) x 1
o Keep this manual for future reference.
Warranty card x 1
For European customers
Disposal of electrical and electronic equipment
(a) All electrical and electronic equipment should be disposed
of separately from the municipal waste stream via collection
facilities designated by the government or local authorities.
(b) By disposing of electrical and electronic equipment correctly,
you will help save valuable resources and prevent any potential
negative effects on human health and the environment.
(c) Improper disposal of waste electrical and electronic equipment
can have serious effects on the environment and human
health because of the presence of hazardous substances in the
equipment.
(d) The Waste Electrical and Electronic Equipment (WEEE)
symbol, which shows a wheeled bin that has been
crossed out, indicates that electrical and electronic
equipment must be collected and disposed of
separately from household waste.
(e) Return and collection systems are available to end users. For
more detailed information about the disposal of old electrical
and electronic equipment, please contact your city office,
waste disposal service or the shop where you purchased the
equipment.
4
ENGLISH
5
Before Use
Bottom plate
of the unit
Spike foot
Protection foot Retaining screws
Power cord receptacle
of the A-02
Support bracket
Power cord
Screw
Read this before attempting any operations.
Placement of the unit
This unit is heavy. Take care to prevent injuries when lifting and
installing it.
o High-quality tool steel is used for the spike 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.
To protect the supporting furniture surface, you may stick the
supplied felt pads to the bottom of the protection feet.
o Place the unit in a stable location near the audio system that you
will use.
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-PC7300 MEXCEL and 6N-PC5300 by supporting their plug.
Attach the bracket and adjust its position according to the size of
the plug of the power cable, and then fix it firmly with the supplied
screws.
CAUTION
o Do not place any objects on this unit.
o Do not cover this unit with a cloth.
o 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.
o As the unit may become warm during operation, always leave
sufficient space around the unit for ventilation.
Make sure there is at least 8” (20 cm) of space above and at least 2”
(5 cm) of space on each side of the unit.
When you install the unit in a rack, use one which has ventlations
and take care of temperature of the unit.
o Do not place this unit on a thick carpet.
o Do not place this unit on its side or upside down.
o When the unit is turned on, switching on the TV may cause lines
to appear on the TV screen, depending on the condition of the
electric waves of the TV broadcast. This is not malfunction in the
unit or the TV. If you see such lines, keep this unit well away from
the TV set.
o 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.
o Do not open the cabinet as this might result in damage to the
circuitry or cause electric shock. If a foreign object should get into
the unit, contact your dealer or service company.
o When removing the power plug from the wall outlet, always pull
directly on the plug, never yank on the cord.
Maintenance
If the surface of the unit gets dirty, wipe it with a soft cloth or
use diluted mild liquid soap. Allow the surface of the unit to dry
completely before using.
For your safety, disconnect the power cord from the wall socket
before cleaning.
o Never spray liquid directly on this unit.
o Do not use thinner or alcohol as they could damage the surface of
the unit.
o Avoid allowing rubber or plastic materials to touch this product for
long periods of time. It could damage the cabinet.
SPEAKER
XLR R RCA
R
BTL
R
XLR LRCA
L
SPEAKER
INPUTS
SIGNAL
IN
GND
INPUT SELECTOR
OUTPUT MODE
BTL
BTL
BTLSTEREO
XLR
RCA
L
GFGF HE E
A
B C D
Front
Back
Identifying the Parts
6
ENGLISH
7
POWER button
A
Press this button to turn the unit on and off.
See steps on page 11 for turning on and off the audio system
including this unit.
SPEAKER terminals
E
WARNING:
Be careful when connecting to these terminals which may have
hazardous voltages on them during operation.
When you turn the unit on, the blue indicator around the button
blinks and no sound comes out for a few seconds. Wait until the
indicator stops blinking.
o When the protection circuit is activated, the indicator around the
POWER button will continue to blink and no sound will come out.
If this occurs, check the items on page 12 “Protection Circuit”.
o Because this unit is equipped with a high capacity transformer
and capacitor, sound may occur from the power transformer
when you turn it on. This is not malfunction in the unit.
o After turning the unit off, wait at least 2 seconds before turning it
on again in order to prevent malfunction.
o Turn off the power when not using this unit.
Power cord receptacle
B
Connect the power cord to the power cord receptacle.
After all other connections are complete, connect the power
cord’s plug to the AC wall socket.
Do not use any power cords other than the one included
with this unit or a power cord specified by ESOTERIC. Use of
other power cords may result in fire or cause electric shock.
Connect these terminals to the speaker's terminals using
commercially available speaker cables.
See “Speaker Connections” on the next page, and “Connection
examples” on pages 9 and 10.
XLR input terminals
F
Connect these ter minals to the o utput terminals of the
preamplifier using commercially available XLR balanced audio
cables.
See “Connection examples” on pages 9 and 10.
o Slide the INPUT SELECTOR switch to “XLR” when you use these
terminals.
o When connecting the XLR plug to the terminal connector, push it
in until the lever of the connector clicks. When disconnecting the
XLR plug, pull it out while pushing the lever.
o The pin assignment of the XLR input terminals is #2 HOT. Use the
corresponding cables for correct polarity.
RCA input terminals
G
Connect these ter minals to the o utput terminals of the
preamplifier using commercially available RCA audio cables.
See “Connection examples” on pages 9 and 10.
INPUT SELECTOR switch
C
Use this switch to change the input between RCA and XLR.
Do not change the input while the unit is on. Doing so may
cause sudden loud noise and damage to speakers as well as
harm hearing.
OUTPUT MODE switch
D
Select “STEREO” when you use this unit as a stereo power
amplifier.
Select “BTL (Bridged Transformer Less)” when you use this unit as
a monaural power amplifier.
o You cannot connect the speakers for the both “STEREO” and “BTL”
modes at the same time. When you want to change the mode,
follow the steps below.
1 Turn the unit off, and then disconnect the speakers from the
unit.
2 Change the mode by sliding the OUTPUT MODE switch.
3 Connect the unit to the speakers, and then turn the unit on.
Do not change the output mode while the unit is on. Doing
so may cause serious damage to the unit and the speakers.
Make sure to connect:
White plug e White jack (L: left channel)
Red plug e Red jack (R: right channel)
o Slide the INPUT SELECTOR switch to “RCA” when you use these
terminals.
GND terminal [SIGNAL GND]
H
Connection of this terminal with the ground terminal of another
chassis may improve sound quality.
o Note that this is NOT an electrical safety ground (earth).
ESOTERIC uses ESOTERIC MEXCEL stress-free cable as a
reference. The following items are available in the ESOTERIC
MEXCEL cable series.
RCA audio cable BNC digital cable
XLR audio cable Speaker cable
RCA digital cable Power cable
XLR digital cable
8
Speaker Connections
13.5mm (1/2˝) or less
6mm (1/4˝) or more
Connect the speakers to the SPEAKER terminals using commercially
available speaker cables.
Before making or changing connections, disconnect the power
cord plug from the wall socket.
o Connect 4Ω or higher impedance speakers when you set the
OUTPUT MODE switch to “STEREO”.
Connect 8Ω or higher impedance speakers when you set the
OUTPUT MODE switch to “BTL”.
o Do not connect two or more amplifiers to one speaker.
o The metal portions of the two separate wires should not touch or
an electrical short can occur. Shorted wires can create a fire hazard
or induce a failure in the unit.
o To prevent hum and noise, do not bundle the speaker cables
together with the power cord.
Speaker cables
o Use the shortest speaker cables possible. As cables become longer,
electrical resistance increases and damping characteristics are
reduced. Moreover, inductance and capacitance also increase,
degrading the quality of high frequency sounds.
How to connect
Be sure to connect each plug securely.
Using speaker cables with bare wire
Turn the terminal cap counterclockwise to loosen it. Insert the bare
wire end properly into the terminal hole, and then tighten the
terminal cap.
o Do not insert the insulation coating into the terminal hole. Insert
only bare wire.
o The thickness of wires should be 4 mm (1/8˝) or less.
o Make sure it is fastened securely by pulling the cable lightly.
Using speaker cables with spades
Turn the terminal cap counterclockwise to loosen it. Insert the
spade into the terminal, and then tighten the terminal cap.
o The left and right speaker cables should be the same length.
o Generally, the ¥ side of the speaker cable is marked to make it
distinguishable from the ^ side of the cable.
Connections when using the unit as a stereo
power amplifier (page 9)
Connect the left channel of the SPEAKER terminals to the left speaker,
and the right channel of the SPEAKER terminals to the right speaker.
Make sure to connect:
¥ SPEAKER terminal e ¥ terminal of the speaker
Using ¥ side of the speaker cable
^ SPEAKER terminal e ^ terminal of the speaker
Using ^ side of the speaker cable
o Also make sure to slide the OUTPUT MODE switch to “STEREO”.
Connections when using the unit as a
monaural power amplifier (page 10)
Connect the BTL ( + and – ) terminals to the speaker.
o The inside diameter of spades should be 6 mm (1/4˝) or more
and outside diameter of spades should be 13.5 mm (1/2˝) or less.
o Make sure it is fastened securely by pulling the cable lightly.
Using speaker cables with banana plugs
With the terminal cap tightened, insert the plug into the jack on
the end of the cap.
Make sure to connect:
Using ¥ side of the speaker cable
Using ^ side of the speaker cable
o Slide the OUTPUT MODE switch to “BTL”.
o Connect the BTL (XLR L or RCA L) terminal to the preamplifer’s
output terminal (left or right).
terminal e ¥ terminal of the speaker
terminal e ^ terminal of the speaker
o Read the instructions supplied with the 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.
Connection Examples (Using as a Stereo Power Amplifier)
SPEAKER
CLASS 2 WIRING
XLR RRCA
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
Left speaker
Right speaker
XLR pin assignment
1. COMMON
2. HOT (+)
3. COLD (−)
Connect a pair of
these cables.
Set the INPUT SELECTOR
switch to the position of
connected terminals.
Push in the XLR plug
until the lever clicks.
Set this switch to the
position of connected
terminals.
RCA connections
Make sure to connect:
White plug e White jack (L: left channel)
Red plug e Red jack (R: right channel)
XLR audio cable
RCA audio cable
Preamplier
A-02
LR
PRE OUT
Power cord
Wall socket
After all other connections are complete, connect the power cord plug to the AC wall socket.
o Read the instructions of each component you intend to use with this unit.
o Be sure to connect each plug securely.
o To prevent hum and noise, do not bundle the connection cords.
ENGLISH
9
Connection Examples (Using as a Monaural Power Amplifier)
SPEAKER
CLASS 2 WIRING
XLR RRCA
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
Right/Left speaker
Power cord
Wall socket
CorrectIncorrect
XLR audio cable
RCA audio cable
Connect one of these cables.
Set the INPUT SELECTOR switch to
the position of connected terminal.
This is an example of using this unit
as a monaural power amplier of the
left channel.
Connect the BTL (XLR L or RCA L)
terminal to the preamplifer’s terminal
that outputs the channel you want.
B Be sure to connect each speaker cable plug
securely (see page 8).
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.
This may cause an electrical spark, and result in a failures
of the unit, electric shock or burn injuries.
Be aware that every SPEAKER terminals carry electric
voltage even when you set the OUTPUT MODE switch to
“BTL” .
XLR pin assignment
1. COMMON
2. HOT (+)
3. COLD (−)
A-02
Preamplier
LR
PRE OUT
Push in the XLR plug
until the lever clicks.
Set this switch to the
position of connected
terminal.
After all other connections are complete, connect the power cord plug to the AC wall socket.
o Read the instructions of each component you intend to use with this unit.
o Be sure to connect each plug securely.
o To prevent hum and noise, do not bundle the connection cords.
10
ENGLISH
11
Turning On and Off the Audio System
Follow these steps when you turns on and off the audio system
including this unit.
Failure to follow these steps may cause sudden loud noise and
damage to speakers as well as harm hearing.
Turning on the audio system
Turn the volume of the preamplifier to the minimum.
1
Turn on the power of the connected input source devices.
2
Turn on the preamplifier.
3
Press the POWER button to turn on the A-02.
4
Turning off the audio system
Stop the playback of the connected component.
1
Turn the volume of the preamplifier to the minimum.
2
Press the POWER button to turn off the A-02.
3
Turn off the preamplifier.
4
The blue indicator around the button blinks and no sound
comes out for a few seconds. Wait until the indicator stops
blinking, and then adjust the volume of the preamplifier.
Turn off the power of the connected input source devices.
5
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