Cable connection
Connection to Nautilus is via an 8-core cable of
high purity silver on copper, terminated in bare
ends to allow the most direct connection to the
amplifier terminals.
It is generally accepted that the wires between
power amp and driver should be as short as
possible, so we do not recommend that the
captive cable be lengthened in any way.
In the majority of cases it will be most
convenient to locate the crossover units in
close proximity to the power amplifiers, with
correspondingly short line interconnects. Each
cable should be connected directly to the
respective outputs of each amplifier.
The line from pre-amplifier and crossover
is likely to be comparatively long and
should, therefore, be of high quality and low
capacitance. It is further recommended that the
balanced input of the crossover be used with
two-core screened cable – even if the pre-amp
is single ended.
In the latter case, the screen and one core
should be joined at the source end.
Detail of twin cored screened lead connecting
phono to XLR plugs (pre-amp to x-over)
InstallationPositioning
Placement of any loudspeaker can significantly
influence the relative balance of sound in the
listening seat and we recommend a degree of
experimentation. In general it will be found that
Nautilus gives optimum results when “toed-in”
to a greater extent than in previous systems,
set typically at an angle of between 60° and
90°. This is due to the smooth, wide dispersion
of Nautilus which is capable of increasing the
relative significance of the side-wall reflection.
Another benefit of the dispersion characteristic
is the substantially increased listening area in
which a pleasant and realistic stereo image may
be enjoyed.
From Pre-Amp
XLR & Phono inputs
(XLR to be used for
balanced inputs &
Phono for standard
single ended inputs)
USE ONE TYPE ONLY
Mains A/C in
To Power Amp
XLR & Phono Outputs
(XLR to be used for
balanced inputs &
Phono for standard
single ended inputs)
USE ONE TYPE ONLY
FOR EACH OUTPUT
All connections should be made with the
equipment turned off. Each Nautilus comes
with its own dedicated active crossover network.
The serial number on the amplifier end of the
harness should match the serial number on
the rear of the crossover network.
The crossover can be connected to the
amplifiers with Phono leads for unbalanced
operation or XLR types for balanced operation.
Each Nautilus will require 1 separate amplifier
channel for each drive unit. The gain and phase
of each must be identical.
Each amplifier (channel) should be capable
of delivering at least 30V RMS into 6 ohms for
realistic levels of reproduction. Most amplifiers
capable of delivering 100 watts into 6 ohms
should be suitable. Connect each of the 4
crossover outputs (LF, LMF, UMF, HF) in turn
to each amplifier or amplifier channel.
The loudspeaker harness should then be
connected to the appropriate terminals on
the corresponding amplifier. The input to the
crossover should then be connected to the
output of the preamplifier. Connect the power
and turn on the crossover, followed by
the amplifiers.
High Frequency Unit
+ RED + ROT + ROUGE + ROJO + ROSSO
– BLACK – SCHWARZ – NOIR – NEGRO – NERO
+
VERMELHO
+ ROOD
– PRETO – ZWART
Upper Mid Range Unit
+ BROWN + BRAUN + MARRON + MARRON + MARRONE
– BLUE – BLAU – BLEU – AZUL – AZZURRO
+
CASTANHO
+ BRUIN
– AZUL – BLAUW
Lower Mid Range Unit
+ YELLOW + GELB + JAUNE + AMARILLO + GIALLO
– GREEN – GRÜN – VERT – VERDE – VERDE
+
AMARELO
+ GEEL
– VERDE – GROEN
Low Frequency Unit
+ ORANGE + ORANGE + ORANGE + NARANJA + ARENCIO
– VIOLET – VIOLETT – VIOLET – VIOLETA – VIOLETTO
+
LARANJA
+ ORANJE
– VIOLETA – PAARS
1 Meter
Listening area
90º60º
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