ALLNIC AUDIO HPA-5000 XL Посібник користувача - Сторінка 5
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INITIAL SET-UP
A.
LOCATION, LOCATION, LOCATION
Like all audio products using tubes, the Allnic Audio HPA-5000
needs to be placed on a solid stand in a location that provides
good air circulation around the Headphone Amplifier.
•
DO NOT cover the top of the HPA-5000 Headphone
Amplifier or tube chimneys. Make sure the unit is in a
place with good ventilation (see Figure 3). The HPA-
5000 is about 165mm (6.5 inches) tall and requires at
least 30mm (~1 inch) clearance for good air flow
above it.
•
DO NOT place the unit on carpet or foam.
•
DO NOT subject the unit to knocks and shocks as you
move it around. This advice is meant particularly for
those who may want to place the HPA-5000 on some
kind of after-market isolation feet or similar devices.
Dropping the HPA-5000 is not a good thing to do and
may void the warranty.
•
DO NOT place the unit near a strong light or heat.
•
DO NOT place anything heavy on the unit.
•
DO NOT allow rubber or vinyl materials to rest on the
unit's chassis for long periods of time. This could
discolour the metal.
•
DO place the unit on a shelf or stand that is stable
and not subject to vibration or sudden shock.
•
DO consider using a high quality power cord and
interconnects, for both inputs and outputs. The HPA-
5000 is a highly sensitive piece of electronic designed
for neutrality and will output what you put into it.
•
DO try to place the HPA-5000 away from major
sources of RFI and EMI; though well shielded, the
HPA-5000 will function best away from large power
transformers and other sources of such interference.
B.
POWER CONNECTION
The HPA-5000 uses a standard three prong male IEC
connection for AC input. You need to use a power cord with
a female three prong IEC connector at one end (See Figure
1).
The HPA-5000 power supply you have purchased is set
internally for AC 110/120 volt – 60 HZ operation. There is no
way to change this to another AC setting without return of
the unit to the factory for re-wiring, at the owner's cost,
including transport both directions.
C.
INPUTS
There are two (2) pairs of single-ended (RCA) inputs. These two
pairs are located on the rear of the HPA-5000 (See Figure 1)
Facing the rear of the HPA-5000, the left hand pair of inputs is
labeled "2"; the right hand pair is input pair "1". Each pair of
inputs is aligned vertically, with the left channel inputs at the top
and labeled "L", and the "right" channel inputs on the bottom
and labeled "R".
The inputs are selected for listening by using the button on the
left of the front panel of the HPA-5000, with the input icon
below it. Having the button out selects input pair 1; pressing the
button in selects input pair 2.
The HPA-5000 has been designed and manufactured to work
most synergistically with Allnic Audio phono preamplifiers.
D.
HEADPHONE OUTPUT
The HPA-5000 is equipped with a single headphone output or
"jack". This one quarter inch (1/4 inch) headphone output
connection is just to the left of the HPA-5000's volume control
knob. Below the jack is a headphone icon (see Figure 2). Above
the jack is a light that indicates that the jack is "live". The light
illuminates at power on.
E.
VOLUME CONTROL
The HPA-5000's volume control is the large knob in the
centre of the HPA-5000's front panel. It rotates clockwise
(gain increased) and counterclockwise (gain reduced). Below
the knob is a "wedge" icon indicating that the furthest
extent of the counterclockwise turn is the lowest gain, while
the furthest extent of the clockwise turn is the highest gain.
The numbers correspond to the hours on a clock for easy
gain setting reference and recall.
NOTE:
BE CAREFUL about differences in gain between your sources.
Generally, disc players and tuners will have greater gain than
phono pre-amplifiers. That means the volume setting for
listening to your turntable might be too high for listening to CDs.
Please set the HPA-5000's volume control at "0" when switching
between inputs 1 and 2.
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