Speaker Owner's Manual

B30
APPLICATIONS
These models have been designed for Bass-Midrange applications
in the field of Sound Reinforcement.
They can be used in two-way and three-way systems of 300W AES
when high sounding quality and high efficiency are needed.
Maximum recommended X-over freq. is 2.0kHz, Optimum Bass-Reflex
loading is situated between 40L and 50L tuned from 48Hz to 52Hz.
FEATURES
Power handling capacity 300 W AES
Reference efficiency(1W @ 1m) 96 dB SPL
SPL max (continuous) 117 dB SPL
Usable frequency range 40-2000 Hz
Environmental withstanding Outdoor
DESIGN CONCEPT
DEFLECTION CONTROLLED DIAPHRAGM optimized for dynamic
damping. DEFLECTION CONTROLLED DIAPHRAGM technology consists
in optimizing the shape and material of the diaphragm so that it
works as a mechanical transmission line, to avoid breaking modes
as well as mechanical threshold which destroy sound quality.
This leading edge technology offers substantial sonic advantages.
Among them: sound coherency, fast transients, stable sound
imaging, high sensitivity, wide frequency range and reduced
directivity pattern.
VENTED COMPACT MAGNET SYSTEM. It has been carefully
optimized to obtain maximum transducing efficiency while
avoiding unlinear behavior such as coil inductance variation
with position, flux modulation, harmonic distortion, rest position
offset, air compression and off-axis voice-coil pushing.
Its design incorporates a T-shaped and vented pole piece, and
a flux stabilization ring. It also takes into consideration
demagnetization at cold temperatures.
INTERCOOLER SYSTEM (patented). Entirely integrated into the
loudspeaker itself, the
INTERCOOLER SYSTEM extracts the heat
produced by Joule effect in the voice-coil by the means of an air
flow directed through the heatsink rims of the basket by the
motion of the dust-cap and the spider.
The gain brought about by this technology is over 20 % of extra
power, so for example, a 3”coil according to this design has
the same power handling capacity as a classical 4”one.
ARCHITECTURAL SPECIFICATIONS
NOMINAL DIAMETER : 300 mm.
FRAME : High tensile alloy pressure
die-cast basket with patented
INTERCOOLER SYSTEM.
MAGNET SYSTEM : 2.5”highly
energized, heat extracting design
with vented pole piece and flux
stabilizing ring.
VOICE COIL : High-temperature
stabilized copper wire wound
on high-strength glass polyimide
former.
CONE ASSEMBLY : High-strength
cellulose fiber cone and central
dome impregnated and front cated
with damped resins, fitted with
high-compliance treated double-roll
fabric surround.
SPEAKER MASS : 6.40 kg.
PROFESSIONAL SERIES
6 Ω
12” Bass Midrange Drivers
High Efficiency
High Sounding Quality
4500
4510
8 Ω