depending on the conditions selected. At JBL the
final
analyses are comprised
of
extensive listening sessions.
Although
laboratory data are
an
integral part
of
the
process,
the trained ear
is
the ultimate criterion. The
success
of
this philosophy
is
reflected in the enthusiastic
acceptance
of
JBL systems
by
recording studio
engineers, producers and performers —professionals
whose artistic achievements are closely related
to
the
equipment they use.
Power
Capacity
1
50
Watts continuous program
Nominal
Impedance
8 ohms
Dispersion
90°
horizontal and vertical
Crossover Frequencies 1500 and
6000
Hz
Efficiency
1
Watt
input
produces
76 dB
Sound Pressure Level
at a
distance
of
15'
(Note:
75-80
dB is a
comfortable
listening
level.)
Low
Frequency Loudspeaker
Nominal
Diameter 10 inches
25 cm
Voice
Coil
2-inch
(5
cm) copper
Magnetic Assembly Weight 2Vi pounds 1.1
kg
Flux
Density
8500
gauss
Sensitivity
2
40
dB
Midrange
Transducer
Nominal
Diameter
5 inches
13 cm
Voice
Coil
%-inch
(2.2 cm) copper
Magnetic Assembly Weight l
5
/8 pounds 0.7 kg
Flux
Density
15,000
gauss
Sensitivity
Averaged 1-3
kHz.
45
dB
High
Frequency Direct Radiator
Nominal
Diameter
1.4 inches
3.6 cm
Voice
Coil
5
/8-inch (1.6 cm) copper
Magnetic Assembly Weight
1%
pounds 0.7 kg
Flux
Density
15,000
gauss
Sensitivity
Averaged above
2 kHz.
41
dB
Finish
Natural
Oak
Grille
Stretch fabric
Grille
Color Options
Orange, Blue
or
Brown
Dimensions
13
1
/
2
"x24"xl3
5
/
8
" deep
34x61x35
cm
deep
Shipping
Weight
45 lbs
20
kg
1.
Based on a laboratory
test
signal. See Power Capacity section for amplifier power
recommendation.
2. Since the major portion of the energy reproduced by the low frequency
loudspeaker lies below 800 Hz, this specification has been developed using a
test
signal
warbled from 100 to 500 Hz,
rather
than the 1-kHz sine wave
test
signal on
which
the conventional EIA sensitivity is based.
3
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