IDENTIFICATION OF CONTROLS
REAR PANEL
13 BRIDGE MODE
The C 268 amplifier can be configured to be MONO (Bridge Mode),
more than doubling its output power. This way, the C 268 can be used
as part of a high power stereo or home-theatre system, by connecting
additional power amplifiers.
•
In BRIDGED MODE (switch at ON (MONO) setting), the C 268 will
produce approximately 160W into an 8 ohm loudspeaker. In this mode,
the amplifier sections will react as though the speaker impedance
has been halved. Low impedance speakers (under 8 ohms) are not
recommended when using Bridge Mode as these may cause the
amplifier’s thermal cut-out to operate if played at high levels.
•
Set BRIDGE MODE switch to the “ON (MONO)” position and connect
the speaker to the terminals marked “L +” and “R-” ensuring that the
“L+” is connected to the “+” terminal of your speaker and the “R-” is
connected to the speaker’s “ - ” terminal.
•
Set BRIDGE MODE switch to OFF (Stereo) for normal operation.
IMPORTANT NOTE
If C 368 is the signal source, connect only C 368 Right channel PRE OUT
to C 268 LEFT input (both C 368 and C 268 in BRIDGE mode). Never use
C 368 Left channel PRE OUT to drive C 268 LEFT input.
14 SPEAKERS
•
Connect C 268’s Right speaker terminals marked “R +” and “R-” to
the corresponding “+” and “-“ terminals of your designated right
speaker. Repeat the same for C 268’s Left speaker terminals and
corresponding left speaker.
•
Double check the speaker connections before powering up the C 268.
IMPORTANT NOTES
• The blue terminals must never be connected to ground (earth).
• Never connect the blue terminals together or to any common ground
device.
• Do not connect the output of this amplifier to any headphone adapter,
speaker switch or any device that uses common ground for left and right
channels.
NOTES
• Use 16 gauge (American Wire Gauge or AWG) or lower stranded wire.
Connections to the C 268 can be made with banana-type plugs.
• Bare wire or pins can also be used by loosening the terminal’s plastic nut,
making a clean, neat connection and re-tightening. To minimize the
danger of a short circuit, ensure that only 1/2-inch of exposed wire or pin
is used to connect and no loose strands of speaker wire.
15 POWER
•
Supplies the AC mains power to the C 268.
•
When the POWER switch is set to ON position, the C 268 goes to
standby mode as shown by the amber status condition of the front
panel Power indicator.
•
Press the front panel Standby button to switch ON the C 268 from
standby mode.
•
If you do not intend to use the C 268 for long periods of time (such
as when on vacation), switch off the POWER switch.
•
With POWER switched off, the front panel Standby button cannot
activate the C 268.
16 FUSE HOLDER
•
Only qualified NAD service technicians can have access to this fuse
holder. Opening this fuse holder may cause damage thus voiding
the warranty of your C 268.
17 AC MAINS INPUT
•
The C 268 comes supplied with two separate mains power cords.
Select the mains power cord appropriate for your region.
•
Before connecting the plug to the mains power source, ensure that
it is firmly connected to the C 268’s AC Mains input socket.
•
Always disconnect the mains power plug from the mains power source
before disconnecting the cable from the C 268’s AC Mains input socket.
8
ENGLISH
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