Installation and operation
In normal living rooms with soft furnishings, book cases and
curtains there is sufficient sound absorption not to require
additional acoustic treatment. If all music sounds hard and
over “bright”, extra sound absorption may be added to the
rear wall using the addition of a heavy curtain ca. 2x2m
mounted with a distance of 0.1m to the rear wall.
Gathering or opening the curtain can be used to adjust the
sound absorption.
In rooms with parallel walls/ceiling and floors and little ab-
sorption, sound diffusing elements (bookcase with different
sized books) may be an alternative solution to extra absor-
bents. The diffusing elements have to be of sufficient size
compared to the acoustic wavelengths
(l @ 300Hz ca 1.1m, l @ 5000Hz ca 0.07m), at least ½
times the wavelength.
The fine tuning of the installation is carried out by adjusting
the toe-in of the Loudspeakers. Turning the loudspeakers
from facing straight ahead to directly facing the listener or
slightly crossing in front of the listener allows subtle adjust-
ment of the sound.
Connections
Your loudspeakers are designed to be used with HiFi equip-
ment of equivalent or better quality. Under powered amplifi-
ers when driven hard, are more likely to cause damage to
the loudspeakers due to distortion caused by clipping than
high powered high quality amplifiers driven to the same
volume.
Connections to the chosen amplifier should be made with
good quality loudspeaker cable and kept as short as possi-
ble. Cable lengths for each half of a stereo pair should have
the same length. Connecting wires from the amplifier to the
loudspeakers may be paralleled up to decrease the resis-
tance added by the cables.
The cable connector on the rear of the loudspeaker base
will accept a wide variety of cable terminations including
bare wire, 4mm plugs, spades, etc. The cables should be
periodically removed and re-connected to create new con-
tact points. The cables should be colour coded to assist in
connecting the loudspeakers in phase, so that the mem-
branes move outwards on a positive signal. Phase may be
checked either with a test disk or placing the loudspeakers
face to face 0.05m apart. Connecting the loudspeakers in-
phase will give more bass inverting one of the loudspeaker’s
connections will greatly reduce the amount of bass (out of
phase).
9
Summary of Contents for FS401
Page 1: ...UK FS401 Owner s Manual...
