PHL Audio B17 - Manual

B17
APPLICATIONS
Dedicated to proximity sound reinforcement systems these models
are optimum for two way Bass-Reflex systems using one or two
drivers per system, with a X-over frequency situated around 3kHz
to 5kHz.
Their particular design prevents over-excursion damage making
them extremely rugged without any counterpart in the sound
which remains accurate and dynamic.
Recommended Reflex enclosure is 10L to 12L tuned from 60Hz to
65Hz.
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.
SOFT EXCURSION LIMITING. The SOFT EXCURSION LIMITING mechanism is
a special S-profile design of the rubber surround avoiding voice-coil
bottoming which destroys driver functionality instantaneously.
The cone excursion is progressively limited to +/- 8mm, introducing
a soft clipping which totally protects loudspeakers from
over-excursion damage.
COMPACT MAGNET SYSTEM Its design has been specially 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 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.
PROFESSIONAL SERIES
8
Ω
6.5” Bass Midrange Drivers
High Sound Pressure Level
High Efficiency
■
Contact Class
1330
1290
16
Ω
FEATURES
Power handling capacity 100 W AES
Reference efficiency
(1W @ 1m)
94 dB SPL
SPL max
(continuous)
110 dB SPL
Usable frequency range 50-4000 Hz
Environmental withstanding Outdoor
NOMINAL DIAMETER : 166 mm.
FRAME : High tensile alloy pressure
die-cast basket with patented
INTERCOOLER SYSTEM .
MAGNET SYSTEM : 1.5” highly energized,
heat extracting design.
VOICE COIL : High-temperature
stabilized copper wire wound on
vented, high-strength glass polyimide.
CONE ASSEMBLY : High-strength cellulose
fiber cone and central dome
impregnated and front-coated with
damped resins, fitted with S-shaped
viscoelastic damped neoprene
surround.
SPEAKER MASS : 2.15 Kg.
ARCHITECTURAL SPECIFICATIONS