Read JBL S 3100 User Guide / Operation Manual online
4
As you move further to one
side, the image should remain cen-
tered, if you have used the recom-
mended 2 to 3 meter spacings dis-
cussed earlier. If you are using a
wider spacing, then the image may
tend to move toward the nearer
loudspeaker. If this takes place, it is
your cue to angle both loudspeak-
ers inward slightly, so that more
correction will take place. Be sure
to angle both loudspeakers the
same amount, so that side-to-side
symmetry is maintained. Details
here are shown in Figure 2.
tered, if you have used the recom-
mended 2 to 3 meter spacings dis-
cussed earlier. If you are using a
wider spacing, then the image may
tend to move toward the nearer
loudspeaker. If this takes place, it is
your cue to angle both loudspeak-
ers inward slightly, so that more
correction will take place. Be sure
to angle both loudspeakers the
same amount, so that side-to-side
symmetry is maintained. Details
here are shown in Figure 2.
ELECTRICAL CONNECTIONS:
The models S2600 and S3100
are can be operated by a normal
stereo amplifier, or they may be
operated in “bi-wire” configuration.
For standard operation, bus bars
connect the two sets of terminals
on the back of each enclosure so
that both high and low frequency
sections of the dividing network are
electrically in parallel.
stereo amplifier, or they may be
operated in “bi-wire” configuration.
For standard operation, bus bars
connect the two sets of terminals
on the back of each enclosure so
that both high and low frequency
sections of the dividing network are
electrically in parallel.
In the bi-wiring configuration, a
separate amplifier section feeds
each of the high and low frequency
portions independently. In bi-wiring,
the full signal is applied to both
high and low frequency sections of
the dividing network; however, the
network will restrict the current flow
only to those signals intended for
the high or low frequency trans-
ducer. Bi-wiring has the advantages
of biamplification, but without the
need for an external electronic
dividing network. A schematic dia-
gram of the bi-wiring option is
shown in Figure 3.
each of the high and low frequency
portions independently. In bi-wiring,
the full signal is applied to both
high and low frequency sections of
the dividing network; however, the
network will restrict the current flow
only to those signals intended for
the high or low frequency trans-
ducer. Bi-wiring has the advantages
of biamplification, but without the
need for an external electronic
dividing network. A schematic dia-
gram of the bi-wiring option is
shown in Figure 3.
GRILLES:
Grilles are a complement to the
details and industrial design of the
loudspeaker system. However,
many listeners prefer to operate
their loudspeakers with the grilles
removed, even though JBL has
used the most acoustically trans-
parent materials available. The
choice is strictly up to the listener.
loudspeaker system. However,
many listeners prefer to operate
their loudspeakers with the grilles
removed, even though JBL has
used the most acoustically trans-
parent materials available. The
choice is strictly up to the listener.
THEORY OF OPERATION:
The uniform imaging properties
of the S2600 and S3100 systems
are based on the asymmetrical hori-
zontal coverage patterns that the
two loudspeakers produce. Above
1kHz, the high frequency horn’s
pattern ranges from wide, directly
in front of the system, to narrow, as
the listener moves off axis toward
the middle of the array and beyond.
are based on the asymmetrical hori-
zontal coverage patterns that the
two loudspeakers produce. Above
1kHz, the high frequency horn’s
pattern ranges from wide, directly
in front of the system, to narrow, as
the listener moves off axis toward
the middle of the array and beyond.
α
α
Figure 2. For loudspeaker spacing in excess of
3 meters, set a in the range of 5 to 10 degrees.
3 meters, set a in the range of 5 to 10 degrees.
Click on the first or last page to see other S 3100 service manuals if exist.