ALLNIC AUDIO A-5000 DHT Manuale d'uso - Pagina 6
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of interference.
B.
INPUTS
There are two (2) female inputs. One accepts a balanced
cable with a male XLR connector; the other is to accept a
cable with a single-ended, RCA type male connector. These
input connections are located on the right (facing the back)
rear of the chassis, with the balanced input closest to the side
edge. Between the inputs, there is a switch to select one of
two pin configurations for a balanced cable (i.e., it changes
the phase). The top position is for pin 2" hot" and pin 3
"cold"; the bottom position is for the reverse (in both cases,
pin 1 is ground). Please refer to Figure 4
C.
SPEAKER TERMINALS
The A-5000 DHT is equipped with one pair of high-quality
speaker terminals. These terminals are located in the middle
of the rear panel of the A-5000 DHT chassis. Between the
terminals, there is a switch for selection of 4 ohm or 8 ohm
impedance (or 8 and 16 ohms, if specified by purchaser in
advance). The negative connection, marked "-", is closest to
the centre of the chassis. The terminals accept bare wire (not
recommended) and spade and banana type connectors.
Please refer to Figure 4.
D.
POWER CONNECTION
Connect the input interconnect and speaker cables before
you insert the power cable into the receptacle at the far left
(again, facing the chassis rear). The A-5000 DHT 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. Please refer to Figure 4.
The A-5000 DHT 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.
INITIAL POWER-ON
Once you have your A-5000 DHT in place and all connections
have been made to your turntable and preamplifier, you are
ready to turn on the power for your A-5000 DHT; before you
power it up, though, be sure you have:
removed ALL the cushion materials from inside the
tube chimneys
selected the input connection that you want to use,
single ended (RCA) or balanced (XLR), on the switch on
the back of the chassis and have the interconnect firmly
attached.
turned on your source(s) and your preamplifier, and
turned the preamplifier's volume control down to zero
or otherwise muted its output
securely and correctly fastened the speaker cables and
ensured that they are also connected properly to the
speakers
checked that no tubes are out of their sockets
Turn on the A-5000 DHT by pushing the on/off vertically
mounted rocker switch, located at the front of the right side
panel (facing the front of the unit to the "on" position. The
"on" position is with the vertical line on the switch (the
upper portion depressed and the part of the switch marked
with the "o" (the lower portion in the raised position. Of
course, the off position is the reverse. After about thirty to
forty (30 - 40 seconds, the A-5000 DHT will be fully powered
up.
OPERATION
When the power is on, the current meter on the face of the
chassis will illuminate. From this point on, operation is
straight-forward.
When you are finished listening, turn off your A-5000 DHT
monoblock(s first; then, turn off your preamplifier and
sources.
In the case of any failure, please contact Allnic Audio USA for
assistance.
TUBES AND TUBE BIAS
Each A-5000 DHT comes with the following tubes installed:
One (1) x 300B
One (1) x HL-2
One (1) x 3A-110A
One (1) x 5U4G
Because of the ability to bias the 300B, it is not necessary to
use a matched pair of 300B's in an A-5000 DHT monoblock
pair.
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