PHL Audio B38 Benutzerhandbuch

This model is intended to be used in cases where neither ultimate
transcription sound nor full outdoor environmental withstanding 
are requested. 

The main use is in the field of Studio Monitoring. Its linear pressure
response up to 1kHz, together with the smooth upper roll-off 
are ideal for this application. 

Recommended acoustical load is in a Reflex enclosure of 90L 
to 120L tuned from 40Hz to 43Hz, while usable freq. range is
possible up to 600Hz depending only on the directivity
compromise you agree on.

Power handling capacity    500 W AES
Reference efficiency

(1W @ 1m)

SPL max

(continuous)

Usable frequency range     35-2000 Hz
Environmental withstanding Outdoor

✚

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.

: 380 mm.

: High tensile alloy pressure 

die-cast basket with patented

INTERCOOLER SYSTEM

.

: 3” highly energized,

heat extracting design with vented
pole piece and flux stabilizing ring.

: High-temperature

stabilized copper ribbon wound on
high-strength glass polyimide former.

CONE ASSEMBLY : High-strength
cellulose fiber cone impregnated and
coated on both sides with damped
resins, fitted with central carbon-fiber
dome and high compliance treated
double-roll fabric surround.

SPEAKER MASS : 9.10 kg

Ω