PHL Audio B17 Manual Do Utilizador

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.

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.

Ω

■

Ω

Power handling capacity

Reference efficiency

(1W @ 1m) 

SPL max 

(continuous)

Usable frequency range     50-4000 Hz
Environmental withstanding  Outdoor

: 166 mm.

: High tensile alloy pressure 

die-cast basket with patented

INTERCOOLER SYSTEM

.

: 1.5” highly energized,

heat extracting design.

: High-temperature

stabilized copper wire wound on
vented, high-strength glass polyimide.

: High-strength cellulose

fiber cone and central dome
impregnated and front-coated with
damped resins, fitted with S-shaped
viscoelastic damped neoprene
surround.

: 2.15 Kg.