12
Front Panel Controls
The LS28SE has two microprocessor-driv-
en rotary controls and six buttons (Power,
Menu, Enter, Mono, Invert, and Mute).
Left Rotary control (Input Select)
Select input by rotating the control to the
left or right. The screen displays the cur-
rent input on the left side of the display.
Right Rotary control (Volume)
Adjust volume (output level) up or down
for both L and R channels. Volume control
is also selectable via VOL UP and VOL
DN buttons on the remote control. Vol-
ume adjustment is indicated in the display
window by numeric digits on 0–103 scale.
Do not turn volume up beyond normal
listening levels when ‘mute’ is engaged to
avoid unexpected or possibly damaging
sound levels. Reduce volume level when-
ever changing input sources, even when
muted.
The right rotary control also functions to
change settings when in menu mode.
Power On/Off
Supplies power from A.C. wall outlet to
preamp; indicated by active display win-
dow. The LS28SE requires approximately
45 seconds to warm up; this time is re-
quired to stabilize the vacuum tubes. See
‘Start-Up Procedure’ on page 11 for details.
Menu
The menu button enters the setup menu
of the LS28SE to allow customizing cer-
tain settings of the preamplifier. See page
15 for further details about using the setup
menu.
Enter
The enter button is used in conjunction
with the Menu button to make changes to
the systems settings of the LS28SE.
Mono
Toggle between Stereo and Mono output.
Invert
The invert button allows the absolute
phase of the recording to be switched be-
tween ‘normal’ (in-phase) and ‘invert’ (180°
inversion).
Mute
When activated, Mute electrically disables
all outputs of the preamplifier; indicated
by ‘MUTE’ in display window, beneath the
volume number. This control should be
activated before switching inputs, chang-
ing connections or shutting down your
audio system to help protect your ampli-
fier and speakers from unexpected sig-
nal pulses. When deactivated, ‘MUTE’ is
cleared from the display window allowing
normal operation.
Operation
Summary of Contents for ARCLS28SE
Page 1: ...H I G H D E F I N I T I O N LS28SE...
Page 2: ...There is only One Reference...
Page 21: ......
