The JBL Model
2235H represents the latest developments in low frequency loudspeaker
technology. It combines smooth response, extended low frequency bandwidth,
and extremely low distortion, making it ideal for custom studio monitors
and other critical applications requiring an optimum balance of efficiency
and bass response.
The 2235H has
a low-loss magnetic structure that weighs 8.5 kg (18 5/8 lb) and incorporates
JBL's unique Symmetrical Field Geometry (SFG). This design, in combination
with the aluminum Flux Stabilizing Ring around the pole piece, reduces
second harmonic distortion to inconsequential levels. The 100 mm (4in)
diameter voice coil benefits from new adhesive technology and optimized
coil-former construction of aluminum, plastic and high temperature
paper for increased power capacity. The 19 mm (3/4 in) length of the
voice coil allows increased linear excursion capability and the extension
of usable frequency response to 20 Hz in equalized alignments and
subwoofer applications. Careful choice of suspension elements, taking
into account their interaction with the voice coil motion, results
in a driver with tight, controlled transient response and complete
freedom from dynamic instabilities.
The heavy cast
aluminum frame resists deformation and improves heat dissipation,
and extremely tight manufacturing tolerances contribute to the high
performance and linear frequency response.