PHL Audio B38 User manual

B38
APPLICATIONS
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. FEATURES
Power handling capacity 500 W AES
Reference efficiency(1W @ 1m) 97 dB SPL
SPL max (continuous) 120 dB SPL
Usable frequency range 35-2000 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 : 380 mm.
FRAME : High tensile alloy pressure
die-cast basket with patented
INTERCOOLER SYSTEM.
MAGNET SYSTEM : 3” highly energized,
heat extracting design with vented
pole piece and flux stabilizing ring.
VOICE COIL : 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
PROFESSIONAL SERIES
8 Ω
15” Bass Midrange Driver
Ultimate Sounding Quality
5010

Ø 380.5 max.
Ø354.5 max.
Ø406.5 max
(on angles)
+ Red dot
13
155.5 max. 2 x screw button
terminals
8 x Ø6.5 Holes eq. spaced
on Ø388 and on Ø370
Ø204 max.
5010
TYPICAL CHARACTERISTICS
Rated impedance Z 8 Ω
Reference efficiency (1 W@1 m) - 97 dB SPL
Usable frequency range 1- 35–2000 Hz
Power handling capacity 2(AES) - 500 W
Max Sound Pressure Level 3SPLmax 120 dB SPL
Min. impedance modulus Zmin 6.2 @ 240Hz Ω
Voice-coil inductance 4@ 1 kHz Le1k 1.47 mH
@ 10 kHz Le10k 0.61 mH
Bl product Bl 23.4 N/A
Moving mass Mms 0.123 Kg
THIELE-SMALL PARAMETERS : TYPICAL (QC LIMITS)
Resonance frequency 5Fs34 (±5) Hz
DC resistance 6Re5.6 (±0.5) Ω
Mechanical quality factor Qms 3.3 1
Electrical quality factor Qes 0.27 1
Total quality factor Qts 0.25 1
Mechanical suspension compliance Cms 180 10-6 m/N
Effective piston area Sd0.0892 m2
Equivalent Cas air load Vas 0.200 m3
Max. linear excursion Xmax ±7.0 mm
Linear displacement volume Vd0.6.24 10-3 m3
Half-space efficiency 2.8 %
Unity load volume Vas Qts212.2 10-3 m3
ABSOLUTE MAXIMUM RATINGS
Short term max. input voltage 7Vmax 125 V
Max. excursion before damage Xdam 16 mm
Ambient operating temperature –10 to +50 °C
Storage temperature 8–20 to +70 °C
Environmental conditions 9Outdoor ✚
APPLICATION INFORMATION
Air volume occupied by the driver 10 4.3 10-3 m3
Speaker net mass 9.1 Kg
Recommended reflex box Vb/Fb110 / 40 L / Hz
Electrical polarity A positive voltage applied on the red
terminal produces forward cone motion.
PHYSICAL CHARACTERISTICS
PHL Audio S.A. provides these specifications as representative of current production after conditioning. Because of our continuous research, they are subject to change without notice.
SPECIFICATION NOTES
Note 1 : Allowing for energy response, excursion
capability, Power spectrum, and -3dB low
freq. roll-off for standard reflex tuning.
Note 2 : Established at 20°C ambient temp, according to
AES2-1984 standard using IEC268-1 simulated
programme signal and a 75 liter Bass-Reflex test
enclosure tuned at 45Hz.
Note 3 : Established at 1m on axis of the loudspeaker mounted
in test enclosure, when driven at full AES Power
Handling Capacity, including 4dB of thermal
compression loss.
Note 4 : Measured at 20 mA in free air.
Note 5 : Measured at 20 mA and 20°C ambient temp.
in free air conditions, after full run and rest.
Note 6 : Measured at 20°C ambient temp.
QC limits are ±10%
Note 7 : Stated in RMS voltage according to IEC 268-5.
Note 8 : Includes shipping conditions. The lower limit prevents
from demagnetization.
Note 9: Our products are classified in three categories :
Indoor, Outdoor, and Outdoor ✚ for permanent
outdoor use or severe conditions.
Note 10 : Calculated for front mounting on to a 18 mm thick
board.
461, rue des chênes ■Z.A
77590 CHARTRETTES
FRANCE
Tél : [phone]
Fax : [phone]
e-mail : [email protected]
http: //www.phlaudio.com
5010
15” Bass Driver