1 There is one CHANNEL trimmer per amplifier channel. Each trimmer
will attenuate each input from a minimum to MAX setting (approx -
13 dB to 0.0 dB). We have designed the adjustment range sufficient
to match the speaker sensitivity both from room-to-room and per
speaker for multi-speaker installations. The design of this trimmer is
for sensitivity matching only, not a volume control. It is highly
unlikely one would adjust the trimmers once the installation was
complete, thus for this reason we have placed the trimmers at the
back of the amplifier.
2 Each amplifier CHANNEL INPUT OUTPUT is a direct pass-through
connection, thus the source impedance of each channel input is
exactly the impedance of the output. The special design of the NAD
RCA cables that accompany the NAD CI-series amplifier allow for up
to 6 channels to be fed from one channel of the Flex-Pad STEREO
and MONO OUT, without degradation in sound quality. For
example, one can jumper from Flex-Pad OUT Right to CHANNEL 1
INPUT, then from CHANNEL 1 OUTPUT to CHANNEL 2 INPUT,
from CHANNEL 2 OUTPUT to CHANNEL 3 INPUT, and so on up to
6 channels of inputs. The NAD CI-series RCA jumper cables are
specially designed low-capacitance high-performance cables. We do
not recommend that you use any other RCA jumper cables
than the NAD RCA jumper cables supplied with the NAD CI-
series amplifier, to do so may cause significant loss in music
fidelity or possible other problems.
3 The Flex-Pad MONO OUT is a sum of the stereo right and left inputs
with an output impedance of 75 ohms. We do not recommend
driving more than 6 amplifier inputs with this MONO OUT source.
4 The Flex-Pad STEREO right and left OUT is a stereo buffer with an
output impedance of 75 Ohms per output, capable of driving up to 6
NAD CI-series amplifier inputs per output. We do not recommend
you drive more than 6 amplifier inputs per Flex-Pad output.
5 The Flex-Pad STEREO right and left IN is a high-impedance input
specifically designed for connection to preamplifier or home-theatre
processor outputs. We strongly recommend that these inputs not
be connected to equipment that does not have a volume control!
6 The VACATION switch is the master on/off control for the amplifier.
When the switch is in the on state the amplifier is in standby as shown
by the amber LED above the power switch on the front panel. If the
amplifier will not be used for an extended period of time, switch the
VACATION switch to the VACATION position.
7 The SLEEP/WAKE, SENSE/DEFEAT switch logic controls the
standby/on-state of the amplifier via the presences or absence of
audio signal at the Flex-Pad or amplifier channel inputs. The
SLEEP/WAKE, SENSE/DEFEAT switch must be in the SLEEP/WAKE
position in order to use this logic. When the SLEEP/WAKE,
SENSE/DEFEAT switch is in the SENSE/DEFEAT position, this logic
control is deactivated.
When the switch is in the SLEEP/WAKE position, the NAD CI-series
amplifier will instantaneously turn on from a standby state, sensing
any input signal from any channel as seen by a lit green SENSE LED
on the front panel of the amplifier (approximately above 20mV RMS
input). If all of the audio signals are absent for approximately 5
minutes, the amplifier will switch automatically to standby condition,
with the green SENSE LED off, and the amber LED over the front
panel switch lit.
When the switch is in the SENSE/DEFEAT position, the amplifier will not
turn on even if an input signal is present on any channel or Flex-Pad input.
