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Model
S 2600
Pages
8
Size
222.88 KB
Type
PDF
Document
User Manual / Operation Manual
Brand
Device
Audio
File
s-2600.pdf
Date

JBL S 2600 User Manual / Operation Manual ▷ View online

S2600/S3100 LOUDSPEAKER SYSTEMS
5
For a listener seated equidis-
tant between these, or any other
loudspeakers, stereo imaging will
be accurate. However, with conven-
tional loudspeakers, as the listener
moves off axis the stereo stage
becomes skewed toward the closer
loudspeaker. The reason for this is
that the sound from the nearer
loudspeaker is louder and arrives at
the listener’s ears slightly earlier.
Both of these cues favor localiza-
tion at the nearer  loudspeaker, and
the soundstage is skewed accord-
ingly. 
With the S2600 and S3100 sys-
tems, an off-axis listener will be
located along a zone of higher sen-
sitivity for the loudspeaker farthest
away from him. Therefore, the level
differences due to unequal path
lengths will be compensated.
Changing the toe-in angle of the
loudspeakers will enable the user to
fine tune the systems for nearly any
listening environment.
The imaging performance of
these systems is made possible
through the use of a new high fre-
quency horn that has skewed cov-
erage, rather than the normal sym-
metrical coverage characteristic of
most horns. Figure 4 shows the
polar diagrams of the left horn on
octave centers from 1kHz to 8kHz.
The response of the horn in the
right loudspeaker would be the mir-
ror image of the curves shown here.
HF In
LF In
+
+
_
_
a. Normal wiring
HF In
LF In
+
+
_
_
b. Bi-wiring
Figure 3. Principle of Bi-wiring.
0 dB
-5
-10
0 dB
-5
-10
0 dB
-5
-10
0 dB
-5
-10
1 kHz
2 kHz
4 kHz
8 kHz
Figure 4. Horizontal polar response for
the left channel loudspeaker.
10°
20°
30°
40°
50°
10°
20°
30°
40°
50°
10°
20°
30°
40°
50°
10°
20°
30°
40°
50°
6
TYPICAL SYSTEM
PERFORMANCE:
Figure 5 shows the on-axis sine
wave response of the S2600 sys-
tem taken in a 2
π
environment
(adjacent to one wall), with contri-
butions from low and high frequen-
cy elements indicated separately.
The dashed line represents the
effect of 4
π
(free space) loading.
The overall response does not vary
by more than ±2.5dB from 75Hz to
13kHz. The impedance of the sys-
tem is also shown in this graph.
20
100
1K
70dB
10
31.6
3.16
80dB
90dB
100dB
10K
20k
log frequency – Hz
GROUND PLANE
4
π
2
π
sound pressure level
IMPEDANCE (OHMS)
ANECHOIC
4
π
20
100
1K
60dB
70dB
80dB
90dB
100dB
10K
20k
sound pressure level
2nd Harmonic (+20dB)
3rd Harmonic (+20dB)
Figure 5. S2600 Frequency Response & Impedence
Figure 6. S2600 2nd & 3rd Harmonic Distortion
Figure 6 shows second and
third harmonic distortion for the
S2600 system at a level of 96dB
SPL measured at a distance of 
1 meter. The distortion curves have
been raised 20dB for ease in read-
ing. Under these measurement
considerations the low frequency
distortion remains well under 1%.
High frequency distortion is no
greater than 2% out to 8.5kHz.
S2600/S3100 LOUDSPEAKER SYSTEMS
7
PERFORMANCE WITH VIDEO:
Both the S2600 and S3100
systems can be used in typical
video installations. Due to the ori-
entation of the compression dri-
vers, with their magnets located at
the outside rear of each enclosure,
video systems may be placed any-
where between the stereo pair of
loudspeakers, with residual mag-
netic fields well within standards
for video applications. 
ADDITIONAL TECHNICAL
INFORMATION:
In addition to their attribute of
superb imaging, the S2600 and
S3100 systems are designed and
built very much in the JBL tradition
of fine workmanship and the use of
the best materials. Both LF trans-
ducers are new designs that incor-
porate Aquaplas® damping materi-
al on both cones and surrounds for
smoothest response. Both trans-
ducers have cast aluminum frames
for extra strength, and magnetic
structures have been linearized
through a series of on-going JBL
improvements in this area.
The high frequency driver has a
titanium diaphragm for added resis-
tance to the effects of fatigue and
for extended high frequency
response.
The enclosure is made of
rugged 25mm (1in) particle board,
liberally braced for high damping. 
WARRANTY AND SERVICE:
JBL continually strives to
improve its products. New materi-
als, production methods and
design refinements are introduced
into existing models without notice
as a routine expression of our
design philosophy. For this reason,
JBL    S Series Loudspeakers may
differ in some respect from their
published specifications and
descriptions, but will always equal
or exceed the original specifica-
tions unless otherwise stated.
S2600/S3100 LOUDSPEAKER SYSTEMS
7
PERFORMANCE WITH VIDEO:
Both the S2600 and S3100
systems can be used in typical
video installations. Due to the ori-
entation of the compression dri-
vers, with their magnets located at
the outside rear of each enclosure,
video systems may be placed any-
where between the stereo pair of
loudspeakers, with residual mag-
netic fields well within standards
for video applications. 
ADDITIONAL TECHNICAL
INFORMATION:
In addition to their attribute of
superb imaging, the S2600 and
S3100 systems are designed and
built very much in the JBL tradition
of fine workmanship and the use of
the best materials. Both LF trans-
ducers are new designs that incor-
porate Aquaplas® damping materi-
al on both cones and surrounds for
smoothest response. Both trans-
ducers have cast aluminum frames
for extra strength, and magnetic
structures have been linearized
through a series of on-going JBL
improvements in this area.
The high frequency driver has a
titanium diaphragm for added resis-
tance to the effects of fatigue and
for extended high frequency
response.
The enclosure is made of
rugged 25mm (1in) particle board,
liberally braced for high damping. 
WARRANTY AND SERVICE:
JBL continually strives to
improve its products. New materi-
als, production methods and
design refinements are introduced
into existing models without notice
as a routine expression of our
design philosophy. For this reason,
JBL    S Series Loudspeakers may
differ in some respect from their
published specifications and
descriptions, but will always equal
or exceed the original specifica-
tions unless otherwise stated.
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