‘L
JBL K Series: A new generation of powerful musical instrument loudspeakers with
grown
the unmistakable
loudspeakers
sound quality
and high
efficiency that have become a virtual
trademark
introduced
since the famous
a decade ago.
In the early
amplified
sixties,
musical
J~L
F Series was
sophisticated
on musical
and the
insrrument
are more critical
precisely the reasons
the K Series.
than
performers
instruments
had
for
high stress areas of the cone and voice coil
very
which give K Series loudspeakers double
the power handling capability of the pre-
energy directly to large, handwound
vious F Series. For example,
coils made of ribbon
cake the full output
and
still sound
profes.
clean ac any volume level-from
fo an explosion.
a whisper
and
musicians
F Series provided
-
-
from
turned
to JBI.. The
the answer -with
quality, efficiency and reliability
could offer.
That was the sixties.
sound
only JBL
Today, amplifier
power is much greater, listening
in the K Series is de-
using
tinuous
facturers
The K Series technology
signed co traditional JBL quality standards.
High strength Alnico V magnets in mas-
man”.
major guitar
JBI. sound at its best, with
Each loudspeaker
unique
requirements,
cone character.
efficiency co match.
ever
why ~sr
wanted - sound they couldn’t get from
standard loudspeakers.
To satisfy rheir
sional to beginner
e
before developed
placed
New materials have been formulated
special ideas about the kind of sound they
c
increasingly
demands
castes have
a K140 will
of a 150.wacr
sine wave amp
con-
The K Series delivers more sound per
waft than other musical instrument loudspeakers. The punch
in bass notes is deep
and solid; midrange
bite is crisp and clear;
with brilliance
in the highs for distinctive
sive cast iron magnetic
machined
structures
conduct
voice
wire. These precisely
components
yield
maximum
loudspeaker efficiency and power handling
capacity. Cone surround fatigue has been
virtually
eliminated
compounds
and
by the use of new
materials
developed
by
.JBL. Such improvements meet the stringent
demands of amplified musical instruments
and provide
unsurpassed
durability.
c
KllO
lo-inch
Here
is a loudspeaker
watts
continuous
organists
that can take 75
sine wave
and
deliver
mote sound output per amplifier watt than
any other loudspeaker its site.
Sustain is highly ptcdictable
tone
characteristics
ate
the KI 10 an obvious
and over-
brilliant,
making
choice where small
size and big system prtfotmancc
quired
Considered
to be Jw’s
sounding
musical instrument
it’s tight
at home
arc tecrispest
loudspeaker,
with lead and rhythm
guitar, organ, ot when stacked in a column
for PA use.
The KI 10 may bt small, but its large
3-inch diameter voice coil speaks with real
musical authority.
to reproduce
tal tone character
Conservatively
efficiency, un-
rated at 150 watts con-
matched
capacity
tinous sine wave, the K140 delivers pure
bass nofes even at thunderous levels with
efficiency
15.inch
that’s unmatched
12.inch
This remarkable
loudspeaker
cient and can handle
most 15.inch
brand new sound in a 15.inch
bass instru-
- sharply defined, crisp
sound that projects a bigger bass punch
than ever heard before from other loudspeakers
its size. Plus the same high efi-
ciency and power handling
that have made
choice of ptofes-
the most massive
than
tepto-
sine wave
magnetic
strnctute
has every built. 20 pounds
the JBL tradition,
Power
Handling
power”
JBL
worth, and in
all critical areas arc pre-
of music they reproduce
compressed
loudspeakers
a performer’s
insttument
sttonger
sicnts. Amplifier
musical
instrument
used in
tionally
used ceramic
sttnctute
electric
pianos
has the same huge magnet
and 4.inch
voice coil as the 15.
inch K130. That’s why midrange
are bright,
and
bass is smooth,
ciency’s so outstanding
music maker by JBL.
and highs
and the efi-
in this
12-&h
tremendous
energy
diameter
voice coil of copper wire, milled
to a fine ribbon
hand
cient
extended
most rugged
range
musical
and effi-
instrument
then
on its narrow
edge.
increases
range
in midrange
tion.
K130
-
arc so sevete,
sine wave method
to
manding than actual performance
situations, and provides a truly ctediblc mea-
and provides
expands
outstanding
handling
sure of a loudspeaker’s
Loudspeakers
driven
where
their
made especially
lx-inch
for electric
impedancr
(impedance
actu-
from low to high frequencies
j, For this reason, we
require the K Series loudspeakers to withstand its full rated power input at all frequencies within one-half
an octave on each
side of the minimum impedance
and to sustain this performance
region continu-
in horn-loaded
and high frequency reptoduc-
formance
closures.
the only choice
loud-
Kl5l has it all. 20 pounds of precision
machined Alnico V with high grade iron
and ttemen-
and steel for a super strong magnetic sttuc-
such as instantaneous
ture. A big 4~inch voice roil of special ribbon wire which places 2470 mote wire in
and power ratings provide a musician with
specifications that ate realistic in relation
the magnetic
to his performance
dous musical sound levels are required.
15.inch
This superb low frequency transducer is
spectally designed for bass guitarists and
ot
reflex
pet-
measured
designed
when
for unsurpassed
capability.
point
in all loudspeakers
Loudspeaker
dc-
can be most easily ovct-
is at its minimum
ally varies
capacity. This
test is far more
bass, and
speaker size is not testticted
K140
Because these conditions
we prefer the continuous
Compared
JBL’s new K151 is a powethousc
provides considerably
more output than
smaller cones without the slightest sacrifice
level
ate often very high - especially during live
performances.
standard
definition ~ the kind of cxtta performance
a musician expects from JBL.
loudspeaker
ttan-
power
it as the ideal reproducer
for lead and
power and volume
for rating
K151
The 15.inch cone area
- with all of its
and eaplosivc
laboratory
loudspeaker. Its 125.watt continuous sine
wave power handling capability qualifies
rhythm insttumcnts.
range
by
efficiency,
Bass Instrument
musical in-
wound
tightly
small, machine made coils of round witc
which ate tgpically used in other speakers,
dynamic
15.inch
The K130 is J&s
gap
a huge cast iron pot ~ttucturc.
the magnetic gap lies a 4.inch
this process
K130
fo the magnetic
through
Within
are far less critical
In contrast, musical instrument
loudspeakers rcccivr their signal directly ftom
(250%
guitar amps, organs,
similar applications.
and
sttulnents.
12.inch
that directs
process
than those used with amplified
replaces
types)
included
has been greatly
in the recording
directly
than convcn-
have
playback levels arc tclatively modetatc. As
a result, demands placed on home entei-
wide dynamic
per pound
we
of rating is acceptable for loudspeakers
used at home, because the dynamic range
tainment
by
Capaciq
rating.
cisely machined far optimum performance.
It contains a large, costly Alnico V magnet
loudspeakers
and
these figures for you refctcnce.
The continuous program power method
rating offer performance
that will satisfy
the most critical musician.
The K120
conventional
handling
Since a number of manufacturcts continue
to USC the less srringent “continuous program
To cteatr
power
greater
is
Loudspeaker
A Success Story. The objective:
is more ctl-
models. Its full-range
The K120
(;
K140
dynamite.
sionals for 0x1 30 years.
The K145’s special cone is powered
duction and 100.watt continuous
c
The
15-112 pounds of low frequency
K145 Bass Instrument
power
sound - from C sharp clear down to low
E. Perfectly, Powctfullg.
by any other
bass loudspeaker.
ment loudspeaker
of force
that give K151 outstanding
JBL the overwhelming
K120
mass the result is massive amounts
the rich fundamcn-
of their instruments.
en-
ously fot one hour without
gap than standard
coils of
round wire. Finally, a cone that’s an optimum combination
of stiffness, density and
While
other
methods
damage.
can be used to
achieve even greater power rating figures,
ot peak, JBL’S tests
requitcments.
ill
mm
4-3/R in
4.314 in
1.7 kg
n-114 lb
6.4 kg
14 lb
121
mm
143 mm
I-518 in
143 nlm
T-518 in
168 mm
6.518 in
194 mm
7-1/x in
7.0 kg
7.0 kg
1 L., kg
25.314 lb
11.9 kg
X-1,4 Ib
IT-I/~
lb
Series
15-112 Ih