9
Loudspeaker Connections
The Sigsum outputs its power through two pairs of binding posts—these are compatible with both 4mm/banana plugs and
Spade connectors
The Sigsum has a sophisticated protection circuit to prevent damage from DC offsets, short
-
circuits and overheating, but it is
always wise to avoid situations where these situations may occur.
Always make sure that all connections are tight—loose connections can result in intermittent sound, loss of efficiency and
damage to the terminals, due to arcing.
Speaker cable
Feel free to experiment with the type of loudspeaker cable you use—there is no definitive answer as to which is best, as this
is all to do with system matching– and personal taste. Keep in mind that this is a high current design, so to reap the maximum
benefits, the cable resistance should be kept as low as possible. This can be achieved by keeping cable runs as short as
necessary and using a cable with a large cross
-
sectional area.
Correct Phase
It is important to ensure that your loudspeakers are connected “in phase”. This simply means that, for both the left and right
channels, the positive output connections are connected to the positive terminals on the loudspeakers, and similarly the
negative outputs are connected to the negative loudspeaker connections. It sounds very simple, but it is surprising how often
mistakes are made with this. You will know if you have got this correct, as when you listen to the system you should have
strong bass and a very obvious centrally located image—out of phase will have a diffuse image, and very weak bass. Use of
the Mono button will help clarify this issue—if you listen to the signal in mono and the speakers are connected correctly, you
should hear a VERY strong centrally located signal—out of phase speaker will sound very diffuse with no discernible image.
