14
NAP V175
16.1 connection notes
The mains earth grounds only the case and the
electrostatic screen within the transformer and is not
connected to the signal negative. The mains earth must
always be connected to “ground” regardless of any other
equipment used. In order to avoid hum-loops the signal
negative of the whole system should be connected to the
mains earth in one place. This should be the primary signal
source.
16.2 operation and protection
Once installed the NAP V175 is intended to remain
permanently powered up via its rear panel switch. If the
internal heatsink reaches 70°C due to prolonged running at
very high dissipation the mains supply will be interrupted
and the indicator light will go off until the amplifier has
cooled down. This may take up to thirty minutes.
OPERATION OF THE AMPLIFIER’S THERMAL PROTECTION
SUGGESTS PROLONGED USE AT TOO HIGH A VOLUME
LEVEL. YOUR LOUDSPEAKERS MAY BE AT RISK IF THIS IS
THE CASE. THE VOLUME SHOULD BE REDUCED.
16.3 loudspeaker cable and connectors
Only Naim Audio speaker cable should be used to connect
a loudspeaker to the output of the NAP V175. Custom
Naim Audio loudspeaker connectors are supplied to make
the connection.
IN ORDER TO COMPLY WITH CURRENT
EUROPEAN SAFETY REGULATIONS IT IS ESSENTIAL THAT
THESE ARE USED.
DAMAGE TO THE AMPLIFIER MAY RESULT IF “HIGH
DEFINITION” CABLE OR ANY OTHER SPECIAL CABLE IS
USED TO CONNECT THE LOUDSPEAKERS.
16 Installation and Operation
The NAP V175 is a three channel power amplifier intended for use in audio-visual home-
theatre systems. The three channels provide audio power to drive a centre channel
speaker and a pair of either main front or surround channel speakers. Audio line level
input is via two 4-pin DIN sockets - one for the centre channel and one for the main or
surround pair.
The NAP V175 should be installed in its final operating location before connecting
cables or switching on. Switch on the source and preamplifier components, with the
volume turned down, before switching on the NAP V175. The NAP V175 power button is
located on the rear panel.
The NAP V175 is heavy and care should be taken when lifting or moving it. Make sure
that the surface it is to be placed on can support the full weight.
