ALLNIC AUDIO H-3000V Manual del usuario - Página 8

Navegue en línea o descargue pdf Manual del usuario para Amplificador ALLNIC AUDIO H-3000V. ALLNIC AUDIO H-3000V 15 páginas. Phono stage
También para ALLNIC AUDIO H-3000V: Manual del usuario (15 páginas), Manual del usuario (15 páginas)

Imprimir página

You will need to experiment to find the "sweet spot"

combination for each MC cartridge because even the

cables from your cartridge to the tonearm, your

internal tonearm cable, and your phono cable will all

affect impedance level. We suggest starting with the

specifications from your cartridge and using the

impedance level closest to that. Please refer to Table

one to see the possible combinations for MC cartridges

and the resulting operating impedances and gain.

In the Specifications section, you will read that the MC

input impedance for the H-3000V is up to 470 ohms.

This value represents the internal impedance of the

cartridge itself and is at the very extreme of what

would normally be expected for the internal impedance

of an MC cartridge.

PHONO EQUALIZATION CONTROLS

The H-3000V's phono equalization curve controls, of which

there are two pairs, one for each channel, are on top of the

transformers located just in front of the Moving Coil

transformer controls (See Figure 6). Use the rotary knobs to

set the equalization for each record. The RIAA standard,

which is used for most records, is a Turn-over of 500 Hz and

Roll-off of -13.7 dB; this standard is indicated for each control

knob (See Figure 7). Be sure to set the controls identically for

both channels. A selection of some of the more common

possible non-RIAA settings are found in Table 2 of this

Manual.

A NOTE ON PHASE

Phase issues generally will result in lack of bass and/or

focus of the stereo image. You may need to reverse

connections on your cartridge if you are having phase

issues. As is usual in these circumstances, some trial and

error experimentation may be required to find the

correct position. The process is simplified for you with the

H-3000V, as it has a phase control switch on the front

panel of the phono stage unit.

INITIAL POWER-ON

Once you have your H-3000V in place, you have installed

the5AR4 rectifier in the power supply unit and replaced the

top of the unit, and all connections have been made to your

turntable and preamplifier, you are ready to turn on the power

for your H-3000V.

Before you power up the H-3000V, though, be

sure you have:



removed the shipping O rings from the tubes.



selected the output connections that you want to use, single

ended (RCA) or balanced (XLR), on the two switches on the

back of the phono stage



turned the volume down or muted your preamplifier



pressed the button switch on the left hand side of the front

panel of the phono stage, labeled "muting" below and

having button in and out icons for operate and mute,

respectively, to the in/down "mute" position (see Figure 3)



pressed the button switch on the right hand side of the front

panel of the phono stage to the appropriate phase position,

either "normal" (pressed in) or "inverted" (out position). We

suggest starting with "normal".



rotated the knob labeled "input selector" to the appropriate

input, corresponding to the input you will use initially (See

Figure 4), either MC1 or MC2, or MM1 or MM2



if you are using a moving coil cartridge, set the MC

transformer controls on the top of the chassis to the factor

that you will try initially



set the Phono Equalization controls for both channels for the

setting for the first record you will use



checked that all your connections are snug

To turn on the H-3000V, press in the button switch on the front

of the power supply marked with on and off icons (see Figure 4).

Of course, the off position is the reverse, pressing the button

again so it is returned to the maximum raised position.

OPERATION

When the power supply is on, the light on its front panel

will illuminate and, if it is in the "operate" position, the

light above the muting switch on the front panel of the

Allnic Audio H-3000V phono stage will illuminate after a

forty (40) second automatic protective "mute" period. The

light above the phase switch will illuminate as well, if the

switch is in the "normal" position at turn on.

To avoid surges to the speakers, it is best to switch between MM

or MC input, or between inputs 1 and 2 of either, only with the

H-3000V in "mute" mode and with your preamplifier volume

down or otherwise muted.