Features:
Smooth,
accurate response from 70 Hz to 18 kHz (±3 dB)
88 dB SPL
1W/1m (3,3ft)
Components: 170 mm (6-1/2 in) low frequency loudspeaker;
25 mm (1 in) high frequency dome radiator
Oiled walnut
enclosure
Optinal
steel cradle mount
The most
compact of the JBL studio monitors, the 4401 is ideal for use as a main
monitor in applications where space is at a premium. The tight driver cluster
gives the 4401 outstanding coherency in the near field, making it also an
excellent choice for a console-mount secondary monitor.
The 4401
shares the design philosophy of the larger JBL4430 and 4435 monitors, smooth
response over a wide coverage angle, with wide dynamic range and clear, open
sound. Particular attention has been paid to the design of the dividing network
and to the physical placement of the drivers. Each driver is the product of
extensive research and testing, and each has been designed for optimum
performance in the system.
High
Frequency Dome Radiator
Today's
recording techniques place a premium on high frequency accuracy and definition,
and JBl has designed the 4401's high frequency dome radiator to meet these
demands. The dome is formed of a lightweight phenolic material and coated with
a microscopiclly thin layer of aluminum through a sophicticated
vapor-deposition process. The hard dome construction provides smooth response
with higher efficiency and acoustic
output than a comparable soft dome. Additionally, the driver exhibits
outstandings linearity over its full operating range - there is virtually no
power compression.
Low
Frequemcy Driver
The 4401
utilizes a low frequency driver specially designed for optimum performance in a
compact enclosure. The 1700 mm
loudspeaker exhibits unusually
smooth frequency response, superior transient response, and extremely
low distortion. It features a die-cast aluminum frame for structural integrity
under the most adverse operating conditions.
Symmetrical
Field Geometry Design
The
loudspeaker's magnetic strukture features JBL's unique Symmetrical Field
Geometry (SFG) desin to reduce second harmonic distortion to less than one
tenth the level found in conventional designs. The cone is of laminated
construction to achieve the desired combination of light weight and rigidity.
The coating, and exclusive JBL formulation, adds, a precise amount of mass and
provides optimum damping characteristic .
Carefully engineered suspension elements reduce DC offsets and an
unusually long voice coil allows exceptional excursion linearity.
Frequemncy
Dividing network
The
sophisticated dividing network contributes significantly to the overall
performance of the system. The carefully chosen transition slopes and crossover
point provide flat axial response and minimize off-axis variation, so that
power response is also smooth. The design allows a more predictable interface
of the 4401 qand the studio environment. Stereo imaging also remains stable
over a wider area.
to take full advantage of the inherently
excellent transient response of the two drivers. JBL engineers applied a
principle typically found only in active high frequency electronics.
Polypropylene and polystyrene bypass capacitors are wired in parallel with the network's larger Mylar capacitors to reduce the hysteresis
effects on the signal. This provides improved resolution of complex transient
waveforms.
The
network's iron-core and air-core inductors are carefully chosen for their high
current capacity and low DC characteristics. A high frequency level control
protrudes through the grille for individual adjustments to the spectral
balance.
To simplify
wall or console mounting, the 4401 may be ordered with optional cradle mounts
manufactured of rugged steel.
SPECIFICATIONS
System
Frequency
Response: 70 Hz to 18 kHz (±3 dB)
Power
Capacity: 60 W
Sensitivity: 88 dB SPL
Nominal
Impedance: 8 Ω
Crossover
Frequency: 2,500 Hz
Low
Frequency Loudspeaker
Nominal
Diamater: 170 mm (6-1/2 in)
Voice
Coil: 38 mm (1-1/2 in)
Magnetic
Assembly Weight: 1,3 kg (3 lb)
Flux
Density: 0,95 tesla (9,500 gauss)
Sensitivity: 89 dB SPL
High
Frequency Dome radiator
Nominal
Diameter: 25 mm (1 in)
Voice
Coil: 25 mm (1 in ) copper
Magnetic
Assembly Weight: 0,68 kg (1-1/2 lb)
Flux
Density: 1,4 tesla (14,000 gauss)
Sensitivity: 89 dB SPL
General
Finish: Oiled walnut
Grille
Color: Dark blue
Dimensions
(W x H x D): 375 x 238 x 183 mm
Weight: 16 kg (shipping)
Optional
Equipment: MC 4401 Speaker Cradle for
free standing use or wall mounting
thank you for many information
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