ALLNIC AUDIO H-3000V Panduan Pemilik - Halaman 7

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Halaman Cetak

The H-3000V 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.

INPUTS

There are two (2) sets of two (2) pairs of single-ended (RCA)

inputs. These two pairs are located in the middle of the rear

of the phono stage (See Figure 1) and labeled "input" in the

middle above them. Each channel pair of inputs is aligned

vertically, with the left channel input at the top and the right

channel input on the bottom. The two left hand pairs of

inputs (facing the back of the phono stage) have an "MC"

label above the two left channel connectors; these are the

two input pairs for a moving coil cartridge. The right hand

pair of inputs has an "MM" label above the left channel

connectors; these are the two input pairs for a moving

magnet cartridge. Each pair of moving coil and moving

magnet connections has a number label between the left and

right channel input connections.

In each case, for both MC and MM connections, the left hand

vertically aligned pair of connections (again, facing the back

of the unit) corresponds to input 1 for the selector knob on

the front panel of the phono stage , while the right hand

vertically aligned pair is input 2.

Between the two sets of MC and MM input connections is

a screw type ground connection pin.

When you are facing the front of the H-3000V, the two pairs

of MC connections are on the right/centre of the unit, with

the two MM connections immediately to their left on the

other side of the ground connection.

The H-3000V has been designed and manufactured to work

most synergistically with Allnic Audio preamplifiers, pre-

phono stages and equalization products.

OUTPUTS

The H-3000V is equipped with one pair of unbalanced or

"single-ended" (RCA) outputs and one pair of true balanced

(XLR) output connections. The left channel output

connections are labeled "left output" and are just to the left

of the DC Source Input. The right channel output connections

are labeled "right output" and are on the far left hand side of the

rear of the phono stage unit (See Figure 1). In each pair, the

balanced (XLR) connection is labeled "1", and the unbalanced

(RCA) connection is labeled "2".

Above each pair of outputs, comprised of one single-

-ended (RCA) connection and one balanced (XLR)

connection, is a switch for selecting either the balanced or

the single-ended connector. The switches are labeled

"unbalanced output". Moving the unbalanced output

switches to the right (facing the rear of the unity) sets the

outputs to their respective unbalanced (RCA) connector.

Of course, the opposite position in each case sets the

switches for the balanced connectors. Be sure to have

both switches set for the connection you are using. You

may have both balanced and unbalanced outputs

connected at the same time without introducing hum

PROVIDED you have the output switches set to unbalanced

output.

Moving Coil (MC) Transformer Controls

On the top of each channel's MC transformer on the

centre rear of the chassis deck of the phono stage unit,

there is a rotating control. Turn the control knobs to select

from four (+22, +26, +28, +32dB) gain factors. The four

control positions are labeled as both gain and the turn

ratio of the MC transformer; for example, the lowest gain

position of +22dB automatically corresponds to a turn

ratio of x13 (see Figure 3). You should use identical

settings for both transformers to avoid channel imbalance.

NOTE:

Please mute your H-3000V, and/or reduce your

preamplifier's volume control, during transformer gain

adjustments. Be aware if you are increasing gain, that you

may hit an uncomfortably loud volume level.

IMPEDANCE CONTROL

The Impedance control is located at the rear of the top

plate of the H-3000V chassis (see Figure 6). It has four

positions, 10, 20, 30 and 47 KΩ (thousand ohms). Use the

impedance control to match the H-3000 to the impedance

of your cartridges. For MM cartridges always set the

control at 47 KΩ. Vary the impedance settings to match

your MC cartridges. By experimenting with the impedance

settings and the transformer controls together, you can

obtain optimum performance from your MC cartridges.