the Synergy crossover set for
2kHz (18dB/oct) and paired with the Oriole
woofer, the JBL2342 is now ready for music.
the opening tracks, I'm relieved that the typical "honk",
so common in horns, is absent with the contour network in
is immediately obvious is also the ease with which the JBL
combo delivers the highs. I can only describe it as velvety
smooth yet exhibiting an uncanny perception of depth. It's
actually possible to hear what is in the background. Maybe
it has to do with less harmonic distortion or the way the
horn is designed.
it is, the cheaper competitors are nowhere close to this
level of quality. The only driver I know that exceeds this
JBL combo is the JBL2440.
JBL4425, which the JBL2342 is a vital part of, is quite
advanced in concept.
one, the woofer and compression driver acoustic centers
are physically aligned in the vertical plane. In conjunction
with the even-order, allpass crossover network, the JBL4425
exhibits only 400 micro seconds of group delay from 300Hz
to 1.6kHz. Amazingly, group delay from 2.5kHz to 20kHz is
is outstanding. The JBL2342 Bi-Radial horn maintains a smooth
coverage in the horizontal and vertical axis (100x100 degrees)
from 1kHz to 12.5kHz.
on-axis and normal off-axis listening postions, the JBL4425
is free of lobing in the horizontal plane. In the vertical
plane, lobing is minimized over a +/- 10 degree window.
an accomplishment, even by today's standards.
will be most interesting to marry the JBL2432 with a newer
woofer to emulate the JBL4425.
definitely worthwhile to ponder over. Meanwhile, as a stand
alone horn, the JBL2432 Bi-Radial horn with a JBL2425 is
truly in a class of it's own.