A.C. POWER CONNECTIONS:
It is important that the
Reference 110 be connected via its supplied 20 amp IEC 12-
gauge power cord to a secure, dedicated A.C. power recep-
tacle. Never connect to convenience power receptacles on
other equipment. Only use the power switch on the front
of the Reference 110 for On/Off control of the amplifier, or
the 12V start-up trigger for remote installations.
The AC power source for the Reference110 amplifier should
be capable of supplying 10 amperes for 100 or 120 volt
units, or 5 amperes for 220 or 240 volt units.
For the very best performance on domestic 100 or 120 volt
circuits, the Reference 110 should be connected to its own
AC power circuit branch, protected by a 15 amp breaker.
The preamplifier and other audio equipment should be
connected to a different power circuit and breaker.
The Reference 110 should be turned on
a f t e r
the other
components of your system. If the Reference 110
is turned on before other components, the amplifier will
amplify any extraneous turn-on noises those components
might generate, which could potentially damage the loud-
speakers.
Good operating practice dictates that the ampli-
fier should be turned on last, and turned off first in an
audio system.
The Reference 110 uses a grounding system that does not
require a ground-lifter adaptor plug on the A. C. power cord
to minimize hum. The power cord supplied with the
Reference 110 has a standard grounding plug to provide
maximum safety when properly connected to a grounded
wall receptacle. If there is any question regarding proper
grounding procedures in your installation, seek help from a
qualified technician. Caution should be taken before using
custom after-market power cords: they must be at least
12-gauge and have a standard grounding plug properly
installed. These power cords are to be used with caution, at
the sole risk of the owner.
If electronic crossovers or other AC powered equipment is
used with the Reference 110 it may be necessary to use
“ground lifter” adapters on the power plugs of that equip-
ment to minimize system hum. Generally, the lowest hum
is achieved when the only direct connection between audio
common “ground” and true earth ground occurs in the
preamplifier, through its grounded power cord. Other
equipment in the system should have some form of isola-
tion to prevent ground loops and associated hum.
Always place the power on-off switch on the panel
of the Reference 110 in the “O ff ” position before
connecting the power line cord to AC power.
Remote Turn-on Connections
The Reference 110 has a built-in 12VDC remote turn-on/off
circuit for operation by a master control system in a home
theater or large audio system. Use a 3.5mm (.140") diameter
mono mini plug to connect to the +12V IN jack on the rear
of the Reference 110. Two identical paralleled jacks are
provided to allow chaining connections to control two or
more Reference 110s or other equipment.
The +12V IN jack should be connected to the +12VDC
output of the master control system, using a continuous
+12VDC signal at 12mA per Reference 110 for the duration
of amplifier on-time. Do not use a momentary or data pulse
control signal.
The front power rocker switch on the Reference 110 must
be off to use the remote turn-on. The front power rocker
switch may still be used when the remote turn-on is con-
nected, but the remote will not turn the Reference 110 off
if the front power rocker switch is left on. The front power
rocker switch will not turn the Reference 110 off if the re-
mote system is on.
The +12VDC remote jacks have polarity protection, so they
will not operate if a -12VDC signal is accidentally connect-
ed, or if the control wires are reversed. The 12V remote
relay in the Reference 110 has click suppression to protect
circuits in the master control system.
Operating Procedure
Start-Up:
1.
Secure input connection between the amplifier and your
preamplifier; attach speaker leads to the appropriate
output terminals.
2
. Attach supplied power cord to rear IEC inlet of amplifier,
and plug other end into grounded A. C. power receptacle.
3.
Turn on preamp and all other components; mute preamp
output.
4.
Turn Reference 110 front-panel control from Off to
On. Green power LED will light.
5.
Unmute preamplifier output, initiate source component
signal, and adjust gain as appropriate.
Shut-Down:
1.
Mute preamplifier output.
2
. Turn Reference 110 front-panel control from Operate to
Off.
3.
Turn off preamplifier and then the associated input
source components.
Warning!
After the Reference 110 is turned off, wait at least 5
minutes before turning it on again.
Model Reference 110
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