SPHINX
Project Twelve
6
4. INSTALLATION AND CONNECTIONS
Installation
Make sure you place the Project Twelve on a stable
and sturdy support, it weighs over 6.5 kg.
Never 'stack' two power amps on top of each other.
The Project Twelve will become warm, so correct
placement is critical. Do
not
position it on top of or
close to other heat-radiating equipment (such as
other power amps) or in direct sunlight.
Please ensure unrestricted ventilation around
the component.
If you need to use the amp in a closed cabinet or on
a bookshelf, you should provide unrestricted
ventilation around the component..
We recommend positioning each Project Twelve as
close as possible to each loudspeaker.
To prevent any possible interference keep power
supply cables away from all audio cables.
If all these conditions are met, the Project Twelve
will perform to the extremely high standards it is
designed for.
Connections in general
Before you start connecting equipment it is always
wise to check whether all the mains cables of all
components are disconnected from the mains
outlets!
This will prevent any damage to the loudspeakers
and amplifiers caused by incorrect wiring or
settings.
Always use loudspeaker and audio cables and
connectors of the highest quality.
Siltech SPO cable is used throughout internally and
we recommend using this same cable for all
external connections.
If you have the choice between longer loudspeaker
cables or longer audio cables, choose the latter
(cables between pre-amp and power amp will cause
the least signal quality loss).
Connecting loudspeakers
We recommend using a double pair of cables, if this
is possible with the loudspeaker (one pair for the
highs and another for the lows).
In most cases you will hear a substantial
improvement in the sound quality (but be careful to
prevent shorted connections).
Your dealer can recommend the best cables and
connection methods.
Connect the red OUTPUT terminal (6.) to the red or
'+' terminal of the loudspeaker.
Connect the black OUTPUT terminal (6.) to the
black or '—' terminal of the right loudspeaker.
When using unterminated cables please check
carefully that there are no 'loose ends' to cause a
short between the '+' and the '—' of the terminals on
amp and loudspeaker!
Connecting the input
The balanced XLR input (5.) can be used to
connect any balanced line level signal (such as
from a pre-amp).
The balanced signal cable is the best and preferred
connection method.
Be sure to connect it properly though.
The unbalanced cinch input (8.) can be used to
connect any unbalanced line level signal (such as
from a pre-amp).
Be sure to connect it properly though.
When making the connections please refer to the
descriptions for parts 2. to 8. on page 5.
Connecting the optical cables
The Project Twelve has an optical jack connector
for CONTROL IN en OUT (3.).
When the CONTROL IN of the Project Twelve is
connected to the CONTROL OUT of another Sphinx
component, you don't have to switch the Project
Twelve with POWER switch (5.). The power amp
will automatically select Stand-by mode as soon as
the other component is set to stand-by.
