E4
Note: The AV Bypass feature must be used with care. It
bypasses the SUPERNAIT 2 volume control leaving any
signal connected to the av input to be passed to the
speakers at full volume.
Note: Inserting a headphone plug while AV Bypass
mode is selected temporarily returns the SUPERNAIT 2
to normal operation. Removing the headphone plug will
return the SUPERNAIT 2 to AV Bypass mode.
Note: The mute function is disabled when AV Bypass
mode is engaged.
4.7 Other Signal Inputs and Outputs
The SUPERNAIT 2 incorporates DIN bi-amp (output), RCA
phono sub out, DIN pre-amp out, and DIN power-amp in
sockets on its rear panel. In normal use the pre-amp out and
power-amp in sockets are connected by a link plug. The link
plug should be removed only in the following circumstances:
•
A power supply upgrade is to be used.
• An alternative preamplifier is to be used with the
SUPERNAIT 2 power amplifier. See Section 4.8
• An alternative power amplifier is to be used with the
SUPERNAIT 2 preamplifier.
Note: The power amp in socket carries a 24V DC power
supply output intended for Naim preamplifiers that
require an external power supply.
The SUPERNAIT 2 DIN bi-amp output socket provides a
preamp output signal that enables a second power amplifier
to be used in conjunction with the SUPERNAIT 2 power
amplifier.
The RCA phono sub out sockets provide a stereo output
intended for connection to an active subwoofer. The output
signal is a duplicate of the preamplifier output. No low-pass
filtering is applied.
Diagrams 6.1,and 6.2 illustrate some applications of the
SUPERNAIT 2 preamp out, power amp in and bi-amp
sockets.
4.8 Power Amp Mode Operation
If a SUPERNAIT 2 is to be used as a stereo power amp only it
must be configured to operate in power amp mode:
• With the SUPERNAIT 2 switched off, remove its rear
panel link plug and connect the interconnect cable
from the preamp or preamp power supply to the power
amp in socket
•
Switch on the SUPERNAIT 2. The mute button will
flash to indicate that the link plug has been removed.
Press and hold the mute button until it extinguishes.
The SUPERNAIT 2 is now in power amp mode. Its
volume control indicator and button illumination will
extinguish.
•
To return the SUPERNAIT 2 to normal operation, switch
it off, replace the link plug and switch it on again.
4.9 Power Supply Upgrades
The SUPERNAIT 2 preamplifier can be upgraded through
the connection of an external Flatcap, Hi-Cap or Supercap
power supply. The SUPERNAIT 2 and external power
supply must be switched off when connections are made.
Switch on the external power supply first followed by the
SUPERNAIT 2 when all connections are complete.
4.10 General Connections Notes
The SUPERNAIT 2 negative input and output connections for
each channel are common. The mains earth (ground) should
always be connected regardless of what other equipment is
used in conjunction with the amplifier. The mains earth only
grounds the case and the electrostatic screen within the
transformer, and is not connected to the signal negative. In
order to avoid hum loops, the signal negative of the whole
system should be connected to the mains earth (ground) in
one place.
A signal ground connection is fitted to the SUPERNAIT
2 rear panel. This is intended to be used to connect a
turntable pick-up arm signal earth only.
4.11 External Control and Interface
The SUPERNAIT 2 is fitted on its rear panel with a 3.5mm
jack Remote In socket and a mini-USB interface socket.
The Remote In socket can be used for RC5 remote control
of the SUPERNAIT 2 via a wired connection or a remote IR
repeater.
The mini-USB socket enables firmware upgrades and
diagnostic tests to be carried out. Contact your Naim
retailer for more information if required.
Note: The mini-USB interface is not intended for the
connection of USB memory devices.
SUPERNAIT 2
