To prevent fire, or shock hazard, do not
expose your LS28SE to rain or moisture.
Do not place objects containing water on
top of this unit.
This unit contains voltages which can
cause serious injury or death. Do not
operate with covers removed. Refer
servicing to your authorized Audio
Research dealer or other qualified
personnel.
The detachable power cord on your
LS28SE is equipped with a heavy gauge,
3-conductor cable and a standard three-
prong grounding plug. For absolute
protection, do not defeat the ground
power plug. This provides power line
grounding of the LS28SE chassis
to provide absolute protection from
electrical shock.
The appliance coupler (a.c. power
connector) at the rear of this unit must
be accessible for emergency power
disconnect.
The power button on the front of this unit,
when o, does not disconnect all power
from this unit. This unit is in sleep mode
when not on.
For continued protection against fire
hazard, replace the fuse only with the
same type and rating as specified at the
fuse holder
(see page 19 for fuse information).
This unit is RoHS compliant.
The LS28SE has automatic muting to help
protect system components in the event
of low line voltage. When sensing low line
voltage, the preamp displays ‘Low Line’
and automatically goes into ‘Mute’. This
condition will persist until the line voltage
returns to a safe operating level; please
note the unit will remain in ‘Mute’ even
after ‘Low Line’ no longer appears. Note
that automatic muting is only designed to
protect against power line interruptions
or severe voltage drop. It will not mute in
the event of subsonic transmissions from
a faulty input source, amplifier failure or
speaker malfunction.
A note about packaging...
Save all packaging in a dry place away
from fire hazard. Your LS28SE preamplifier
is a precision electronic instrument
and should be properly cartoned any
time shipment is made. You may not
have occasion to return your unit to the
factory for service, but if that should
prove necessary, or other occasion
requiring shipment occurs, the original
packaging will protect your LS28SE from
unnecessary damage or delay.
Warnings
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