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FOR SALE: JBL 4315 Studio Monitors Speakers

Item #649354549
Info: JBL 4315 Studio Monitors Speakers

Asking Price:
USD $2300.00
Payment method: Cash, Paypal, Money Order
Condition: 8 - Very good (?)
Date Posted: May 13, 17 10:11am (PST)
Edited: Aug 04, 17 9:54am
About Seller: madman2000
Daingerfield, TX
United States
[other classified ads]
Product Brand: JBL (JAMES B. LANSING)
Product Model: 4315 Studio monitor
Days in System:159
Views:2103
Avg. Views/Day:13.23

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Description

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JBL 4315 Studio Monitors

These are the vintage Speakers you can not and should not live without.
please come demo they are just going to go up in price
pick up only if possible cash
they would have to be shipped freight + $
foam replaced 3 years ago ready to rock ,jazz or what ever
I also have a mint McIntosh mc240 no pitting or rust I will be putting on sold

Specifications:
Maximum Power Input' 60 watts continuous s,ne wave
Nominal Impedance 8 ohms
Power output2 97dB SPLmeasured at30m (loft) I"
a room volume of 57 m3 (2000 cu ft)
with % rated power inout (-3 dB)
Frequency Response
Sine Wave, On-AXIS
%-Octave Band
(400 Hz Reference)
35 to 20,000 Hz, f3 dB
-5 dB at 31 5 Hz
+2 dB at 6.3 kHz
0 dB at 20 kHz
Polar Response No less than -3 dB at 80" horizontal
and 60" vertical to 16 kHr
89 dB SPL measured at 1 m (3 3 ft)
with al-watt Input averaged
from 100 to 1000 Hz
40 dB SPL measured at 9 1 m (30 ft)
with a l-mllllwatt Inputaveraged
from 100 to 1000 Hz
DIstortIon
% Power, 95 dB
SPL/3.0 m (10 ft.),
Single Freauency
0 5% orlessthlrd harmorw Qeneratlon
from 35 to 20,000 Hz
Crossover Frequency 400. 2000 and 8000 Hz
Flnlsh Textured orav or oiled walnut
Grille Black fabric with the arav finish:
Dark Blue fabric wthwainut
Enclosure Volume
Low Frequency
Chamber
Midrange Chamber
91 litres 3.2 cu it
2.8 litres 0.1 cu ft
Enclosure Dimensions 854mmx521mmx327mm
33% I" x 20% I" x 12x I"
Net Weiaht 43 ka 95 lb
ShlDDlnq Welaht 49 ka 107 lb
' Power amplifier headroom recommendation is 3 dB minimum, i.e.. for a Wwatt
rating use a 120~watt amplifier.
2Power output measured with a B&K Impulse Precision Sound Level Meter.
3Unlike many "theater type" loudspeaker systems that exhibit sensitivity peaks in
the midrange region, the 4315 provides substantially the same sensitivity through
the full range of audible frequencies. Measured sensitivity below 5W Hz or above
2wO Hz may be considerably greater than that of other systems with higher
sensitivity ratings.
JBL Professional Products are not intended for household use.

Accurate, smooth reproduction from 35 to 20,000 Hz,
f 3dB.
40 dB SPL at 30 feet with a l-milliwatt input.
95 dB SPL al 10 feet at onehalf rated power input.
Components: la-inch low frequency loudspeaker &inch
midrange loud.speakeT S-inch high frequency loudspeaker
and ultra-high frequency transducer Balance
controls located behind the removable grille.
Oiled walnut or textured gray enclosure.
The 4315 Studio Monitor

The 4315, a compact studio monitor, is an extension
of the research and development that produced JBL's
latest high powered and most accurate monitors.
The 4315 accurately reproduces the full range of musical
fundamentals and overtones at sound pressure levels
approaching those of the larger JBL systems
The 4315 is characterized by exceptionally smooth,
wide-band reproduction, clarity, transient response
and a controlled dispersion pattern. Its performance is
obtained through total integration of the components
that make up its four-way system. Each transducer
reproduces only that portion of the audio spectrum for
which it is specifically designed, resulting in greatest
utilization of each driver's frequency response, transient
capability and dispersion characteristics. The effect
is a true monitor system, compact in physical size, whose
sound distribution pattern is such that the operator can
be located relatively close to the enclosure.
The la-inch low frequency loudspeaker features solid
bass reproduction, smooth response well beyond its
crossover frequency and excellent transient response
combined with maximum efficiency conslstent with
the bandurldth of the driver Mounted in a ported enclosure
having an internal volume of 3.2 cubic feet, the
unit is energized by a 19pound magnetic assembly
housing an Alnico V magnet. Closed construction and
precise construction tolerances of the assembly concentrate
a magnetic field of 12,000 gauss in the voice coil
gap. A 4-inch voice coil, fabricated of copper urlre
milled to a ribbon and hand wound on edge, 1s mounted
on a heat reslstant support affixed to a rigid cone
having optimum mass, density and rigidity The cone
is supported by a highly flexible termination that
damps spurious resonances and allows the long, linear
excursion necessary for high volume levels at very
low frequencies.

Midrange Loudspeaker
The smooth performance and instantaneous transient
response of the 8-inch midrange driver is responsible d
for the outstanding instrumental clanty and vocal
defimtion of the system. A closed magnetic assembly,
welghmg 6% pounds, concentrates all the energy of
an Alnico V magnet in the voice coil gap The 3-inch
edgewound copper ribbon voice coil 1s suspended
urlthm a powerful magnetic field having a flux density
of 10,200 gauss The integrally stiffened cone is terrmnated
with an exclusive JBL ring compliance that allows
long excursions while maintaining linear travel
High Prequency Loudspeaker
Smooth, wdely dispersed high frequency reproduction
is provided by a 5-inch cone transducer capable of
considerable acoustic output and wide dispersion.
It utilizes a W-inch diameter edgewound copper ribbon
voice coil suspended within a powerful magnetic field
of 16,500 gauss generated by a 2%pound closed
magnetic assembly contaimng an Almco V magnet.
The voice coil is edgewound for exceptional transient
response and acoustic efficiency Like the midrange
loudspeaker. the unit is housed in a separate subchamber
mthin the 4315 enclosure to prevent acoustical
interaction with the other loudspeakers of the system.

Ultra-High Prequencp Transducer
The exceptional clarity and realism of overtones lying
above 8000 Hz is produced by the ultra-high frequency d
transducer. The unit consists of a compression driver
and diffraction horn specifically designed for reproduction
and dispersion of energy at the extreme high
end of the audio spectrum. The compression driver



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