Dared VP-845LE User manual

Integrated Amplifier (15th Anniversary Edition)
VP-845LE User Manual
Tube ．The Purity of Sound

Dear Customer:
Thanks you for purchasing this unit, brand-name Dared Vacuum
Tube Amplifier. For Optimum performance and safety, please read
this manual carefully and properly keep these manual handy for
future reference.
Table of Contents: Page
1. Safety Instructions................................................................1
2. Feature.................................................................................4
3. Front Panel and Controls.....................................................5
4. Rear Panel and Connections Diagram................................5-6
5. Connections and how to use...............................................6-7
6. Troubleshooting....................................................................8
7. Maintenance.........................................................................9
8. Specifications........................................................................9
1. Safety Instructions
Caution: To reduce the risk of electric shock, do not remove
screws/cover/back. No user-serviceable parts inside.
The Explanation of Graphical Symbols
The lighting flash with arrowhead symbol,
within an equilateral triangle, is intended to
alert the user to the presence of
uninsulated dangerous voltage 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.
Warning:
To reduce the risk of fire, electric shock or product damage, do not
expose this apparatus to rain, moisture, dripping or splashing and that
no objects filled with liquids, such as vases, shall be place on the
apparatus.
110

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7. Maintenance:
Please switch OFF the units and make it cool enough then clean the
dust on the surface of the product with soft brush or dry cloth
periodically. When cleaning the vacuum tube please gently shake the
tube and take it down, install the tubes in the same way after clean.
Do not attempt to clean the unit with chemical solvents: this might
damage the finish.
8. Specifications:
The Power Output..........................................35Wx2
Frequency Response.....................................20Hz-20kHz (±1.5dB)
Harmonic Distortion….................................... ≦ 1%
Signal to Noise Ratio...................................... ≧ 84dB
Input Impedance............................................100kohm
Output Impedance.........................................4ohm, 8ohm
Power Supply.................................................AC100V-120V/50-60Hz
AC220V-240V/50-60Hz
Dimensions....................................................550x260x330mm(LxWxH)
Weight............................................................34kg
The used Vacuum Tube: 845 x2, 6N8 x2, 12AX7 x2
(Specifications subject to change without notice.)
Important Safety Instructions
Read these Owner's Manual carefully before using the unit. Follow the
safety instructions on the unit and the applicable safety instructions list
below.
Keep these Owner's Manual handy for future reference.
1. Read these instructions. - All the safety and operating instructions should
be read before the unit is operated.
2. Retain instructions. - The safety and operating instructions should be
retained for future reference.
3. Heed all warnings. - All warnings on the unit and in the operating
instructions should be adhered to.
4. Follow all instructions. - All operating and other instructions should be
followed.
5. The unit should not be used near water for examples, near a bathtub,
washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming
pool, etc. The units belong to high -temperature and fragile products; the
work temperature is up to 80 centigrade or more, No touching the vacuum
tube and spilling the water on the tube! And keep the unit away from the
babies and children.
6. Carts and Stands – The unit should be used only with a cart or stand that
is recommended by the manufacturer. A unit and cart combination should
be moved with care. Quick stops, excessive force, and uneven surfaces
may cause the unit and cart combination to overturn.
7. Ventilation – The unit should be well situated so that its location or
position does not interfere with its proper ventilation. For examples, the unit
should not be situated on a bed, sofa, rug, or similar surface, that may
block the ventilation openings; or placed in a built-in installation, such as a
bookcase or cabinet that may impede the flow of air through the ventilation
openings. To prevent risk of overheating, ensure that curtains and any other
materials do not obstruct the ventilation vents.
8. Heat – The unit should be situated away from heat sources such as
radiators, heat registers, stoves, or other apparatus that produce heat. Do
not place sources of naked flames, such as lighted candles, on the unit.
9. Power Sources – The unit should be connected to a power supply only of
the type described in the owner's manual or as marked on the unit.
10. Power – Cord Protection power supply cords should be routed so that
they are not likely be walked on or pinched by items placed upon or against
them. Praying particular attention to cords at plugs, convenience
receptacles, and the point where they exit from the unit.
11. Unplug – The power cord of the unit should be unplug from the outlet
during lighting storms or when left unused for long periods of time.
12. Do not operate the units under slant and shake condition or the filament
of vacuum tube will be damaged.

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13. When the product is moved from coo, to warm place, the dew will
coagulate on the surface of vacuum tube, in this circumstance please
patiently wait at least 1 hour to operate the unit to avoid of leakage or
blowout of the vacuum tube due to sudden hot.
14. Grounding or polarization – Precautions should be taken so that the
grounding or polarization is not defeated.
15. Speaker Connection – To reduce the risk of shock or fire and prevent
short circuits, strictly follow the instructions for connecting speakers on
page 6.
16. To prevent electric shock, match wide blade of plug to wide slot, fully
insert.
17. Damage Requiring Service – The unit should be serviced by qualified
service personnel when:-
A. The power supply cord or the plug has been damaged; or
B. Objects have fallen, or liquid has been spilled into the unit; or
C. The unit has been exposed to rain or moisture; or
D. The unit does not appear to operate normally or exhibits a marked
change in performance; or
E. The unit has been dropped.
And the user should not attempt to service the unit beyond those means
described in the owner's manual.
18. Any unauthorized changes or modifications to this equipment would void
the user's authority to operate this device.
Caution: Read this before operating your unit
1. To ensure the optimum performance, please read this manual carefully.
Keep it in a safe place for future reference.
2. Install your unit in a cool, dry, clean place away from windows., heat
sources, and too much vibration, dust, moisture or cold. Avoid sources of
hum (transformers, motors). To prevent fire or electric shock, do not expose
to rain and water.
3. Do not operate the unit upside down. It may overheat possibly causing
damage.
4. Never open the cabinet. If a foreign object drops into the set, contact
your dealer.
5. Do not use force on switches, knobs or cords. When moving the set, first
turn off the unit. Then gently disconnect the power plug and the cords
connecting to other equipment. Never pull the cord itself.
6. To prevent lighting damage. Pull out the power cord and remove the
antenna cable during an electrical storm.
2) Minimize the volume control counterclockwise, then play music to
prevent from damaging the speaker due to the unexpected strong signal;
when you adjust volume at an appropriate level, you can skip this step next
time;
3) When you select SELECTOR knob, firstly please turn down the volume
knob counterclockwise and make it minimum then switch audio
components input to avoid of damaging the speaker and your hearing due
to the unexpected strong signal;
4) Prohibit connecting or disconnecting the speaker and audio equipment
when the music is playing and prohibit playing the music when the speaker
is not connected.
6. Troubleshooting
If the unit fails to operate normally, check the following points to determine
whether the fault can be corrected by the simple measure suggested. If it
cannot be corrected, or if the fault is not listed in the SYMPTOM column,
disconnected the power cord and contact your authorized dealer or service
center for help.
SYMPTOM CAUSE REMEDY
The unit fails to turn on
when the POWER switch
is pressed.
Power cord is not plugged in or
is not completely inserted
Firmly plug in the power
cord.
No Sound
The volume control is set to the
fully counterclockwise position
Turn them clockwise.
Connections cords are not
connected securely to the INPUT
terminals
Connect them securely.
Speaker systems are not properly
connected to this unit
Connect them correctly.
No sound is heard
from the left and/or
right speaker systems
Speaker systems are not properly
connected to this unit
Connect them correctly.
The signal input is not properly
connected to this unit
Connect them correctly.
The acoustic image is
unstable, characterized
by unnatural sound and
insufficient low-range
tonal quality
The positive (+) and negative (-)
polarities (of this unit and the
speaker systems) are not
matched
Reconnected the
speaker systems to this
unit so that the polarities
are aligned.

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Connect firmly and securely, make sure that both the audio components
and amplifier are properly ground. Always turn off the power switches of
both units when connecting or disconnecting the power and amplifier.
b) Connecting Speakers:
Connect a SPEAKERS system having an impedance of 4ohm to 8ohm
provided on the rear panel. Please connect the SPEAKERS terminals to
your speaker with wire of the proper gauge, cut as possible. If the
connections are faulty, no sound will be heard from the speakers. Make
sure that the polarity (+ & -) of the speaker wires is correct. The right and
left speakers are connected to right and left terminals. Otherwise unnatural
sound with poor bass response will be produced.
． Use speakers with the specified impedance shown on the rear of this
unit.
． Banana plug connections are also possible. Simply insert the banana
plug connector into the corresponding terminal.
*When connecting banana plugs to this unit's speakers terminals, be sure
to tighten the terminal knobs to make contact securely before connections.
Caution:
When inserting the stripped ends of the speaker wires as shown above,
make sure at least 1/16inch (1.6mm) of insulation is inside the wire holders
(i.e. no exposed wire is visible) and no loose conductor wire stands are
protruding after connection. If wires touch each other or they touch the
metal parts of this unit, this unit and/or speakers could be damaged. To
prevent speaker wires from coming loose, make sure wire holders are
firmly screwed in.
c) Connecting he power supply
After making sure the power switch is off, plug the AC power cord into a
wall socket of the CORRECT voltage. When travailing, or otherwise not
using the amp for extended periods of time, it is recommended that you
unplug the cord from the AC outlet.
B. How to Use:
1) Please connect the speaker and audio components as per the
introduction above before switch ON the power. Make sure the voltage of
power outlet suit to the unit and all connections is correct;
7. When no planning to use this unit for long periods of time. (i.e.
vacation, etc.,) disconnect the AC power plug from the wall outlet.
8. Be sure to read the Troubleshooting section on common operating
errors before concluding that your unit is faulty
We want you listening for a lifetime
Selecting fine audio equipment such as the unit you've just purchased is
only the start of your musical enjoyment. Now it's time to consider how
you can maximize the fun and excitement your equipment offers. This
manufacturer and the Electronic Industries Association's Consumer
Electronics Group want you to get the most importantly, without affecting
your sensitive hearing. Sound can be deceiving. Over time your hearing
comfort level adapts to higher volumes of sound. So what sounds normal
can actually be loud and harmful to your hearing.
We recommend you to avoid prolonged exposure to excessive noise.
Guard against this by setting your equipment at a safe level before your
hearing adapts.
To establish a safe level:-
Start your volume control at a low setting.
Slowly increase the sound until you can hear it comfortably and clearly,
and without distortion.
Once you have established a comfortable sound level:-
Set the dial and leave it there.
Taking a minute to do this now will help to prevent hearing damage or
loss in the future. After all, we want you listening for a lifetime.
2. Feature:
Small volume and lightweight;
Special manufacturing crafts;
Elegant and aesthetic appearance;
Suit to appreciating and performance at the living room or other elegant
environment.

3. Front Panel and Controls
1. POWER switch/indicator (POWER)
Press this switch to switch ON the power. The indicator will illuminate while the
power is ON.
Press the switch again, to switch off the power.
Attention: It only can be restarted after 5 minutes when being switch off, or it may be
damage the tubes.
Note the following cautions.
Before switching ON the power, be sure to set the volume control (of the per-
amplifier) to the lowest setting in order to avoid damage to the speakers.
The speaker protection circuit functions to mute speaker sound reproduction for a
few seconds after power is switched ON.
2. Volume Control – For increasing/decreasing the volume.
3. Selector – For selecting the different audio source, such as CD, Tap, AUX etc...
4. Rear Panel and Connections Diagram
1. The speaker output (Right)
2. The audio line input
3. AC power input socket (AC100-120V/50-60Hz), (AC220-240V/50-60Hz)
4. The speaker output (Left)
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5. Connections and how to use
A. Connections
Before attempting to make any connections to or from this unit, be sure to first switch OFF the
power to this unit and to any other components to which connections are being made.
When making connections between this unit and other components, make sure that all
connections are made correctly, this is to say L(left) to L, R(right) to R, + to + and – to -. Also,
refer to the owner's manual for each component to be connected to this unit.
A) Connecting various audio components
Connect the various audio components to the input terminals on the rear panel of this unit and
make sure that the L channel to L and R channel to R. The plug pins on both ends of the
connecting cords should be clean.