Conrad-Johnson ET7-S2 Benutzerhandbuch - Seite 8

Blättern Sie online oder laden Sie pdf Benutzerhandbuch für Verstärken Conrad-Johnson ET7-S2 herunter. Conrad-Johnson ET7-S2 13 Seiten. Vacuum-tube line-stage preamplifier

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Controls

<power>: Press the switch labeled power to switch the

preamplifier on. A time delay auto-muting circuit is incorporated

into the ET7 to eliminate transients generated by the warm-up, and

cool down cycles of the vacuum-tubes. All outputs are grounded

via relays for approximately 60 seconds after the unit is turned on

in order to suppress warm-up transient noises. During this auto-

muting period, the mute indicator led will flash. All control functions

are disabled during the auto-muting cycle. The muting relay also

grounds the outputs immediately at turn-off or in the event of any

power line interruption. When the ET7 is turned off (by pressing the

power switch again), the standby led will be illuminated.

When first connected to ac mains, or after an interruption of power,

the ET7 will turn on in a default mode (after auto-muting), with the

level set at 20, and the CD input selected. In subsequent sessions,

as long as the ac mains supply has not suffered a power outage,

the unit will turn on at the last used volume setting and input.

<mute>: Pressing the mute button will silence the preamplifier's

main outputs, and set the level display to zero on both channels.

Pressing the mute button again will restore the previously selected

level setting.

<vol up>, <vol dn>: Level setting on the ET7 is achieved by using

a programmed microprocessor to select combinations from among

an array of high-quality precision resistors. This arrangement

allows 100 steps of approximately .7 dB per step. The steps are

numbered 0 through 99, with 0 being silence, and 99 being

maximum volume.

The level setting can be changed by pressing the vol up and vol dn

buttons on the front panel. Each time a button is pressed, the level

will move up or down one step. If a button is pressed and held, the

level control will cycle through the steps at an accelerating rate.

With each step, a slight "click" will be heard from the opening and

closing relays inside the ET7. Balance can only be set using the

remote control.

<source>: Pressing the button labeled source will cause the unit

to step through the five source inputs (ph/aux, tuner, cd, video,

aux2). The selected input will be indicated by an illuminated led.

<epl/thtr>: Pressing the epl/thtr button will cause the unit to step

from source through epl1 and theater. When source is selected,

the input selected by the source selector will be passed directly to

Conrad-Johnson ET7 Owner's Manual