Millennia LPE-2, Руководство пользователя

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LPE-2
LPE-2 FRONT PANEL
(1) PHONO PREAMP MUTE SWITCH "MUTE"
Pushbutton switch (German ITT) which, when depressed and illuminated, mutes the selected front-end gain
amplifier. Use this function when only one mono input is required.
(2) MONO SELECT SWITCH "MONO (L+R)"
Pushbutton switch (German ITT) which combines left and right inputs into a summed mono signal. When
this switch is depressed and illuminated, left and right input signals are combined into a single mono signal
on both left and right compensation and filter paths.
(3) POLARITY REVERSE SWITCH "POL REV"
P
ushbutton switch
(German ITT)
which, when depressed and illuminated, reverses the polarity (180 degree
inversion) of the right channel input signal. Use with vertical groove recordings or stereo sources which are in
reversed polarity relative to each other.
(4) SIGNAL PRESENT & OVERLOAD INDICATORS "SP" & "OL"
Green and red LEDs (light emitting diodes) which show signal activity (green) and high-level (red). The green
Signal Present LED illuminates with an audio signal level of approximately -50 dBu, and should illuminate with
any normal phono input signal. The red high-level LED illuminates with an audio signal level of approximately
+20 dBu and should only illuminate on the very highest peak levels.
(5) HIGH RESOLUTION PHONO GAIN CONTROL
Detented, 36-position gain control employing a Grayhill mil-spec gold plated rotary switch. Switch gain is
approximately 1.5 dB per step and is inter-channel matched to better than 0.08 dB at all settings. After a brief
warm-up period, adjustment of this switch is virtually silent. Two illuminating pushbutton switches ("A" =
Green and "B" = Amber) determine the gain "range" of the rotary switch. When the pushbutton switches are not
depressed and non-illuminated, the phono preamplifier gain is as printed on the front panel (9.0 dB, 10.5 dB,
12.0 dB, etc..). When the green "A" pushbutton switch (only) is depressed and illuminated, add 18 dB to the gain
settings as printed on the front panel. When the green "A" and amber "B" switches are both depressed and
illuminated, add 36 dB to the gain settings as printed on the front panel. For example, with both pushbutton
switches depressed and the rotary switch at 1:00 o'clock position, the preamp gain would be 55.5dB (19.5 + 36).
Maximum gain can be customized up to 90 dB if required. Contact factory for more information