PHL Audio 4550 User manual

E30
APPLICATIONS
These 12”high efficiency - high sounding quality low-midrange
drivers have been designed to perform well in the 60Hz - 2500 Hz
frequency domain where human hearing is so sensitive.
They can equip two-way or multi-way sound reinforcement
systems of small to medium throw, when AES power handling does
not exceed 250W.
Recovery with a 1”HF comp. chamber is simple, while
recommended acoustical loading is Bass-Reflex from 40 to 50L
depending on the low roll-off required, and tuned from 53Hz
to 57Hz. FEATURES
Power handling capacity 250 W AES
Reference efficiency(1W @ 1m) 98 dB SPL
SPL max (continuous) 118 dB SPL
Usable frequency range 60-3000 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-clad aluminum
ribbon wound on high-strength glass
polyimide former.
CONE ASSEMBLY : High-strength
cellulose fiber cone and central
dome impregnated and front-coated
with damped resins, fitted with
high-compliance treated double-roll
fabric surround.
SPEAKER MASS : 6.40 kg.
PROFESSIONAL SERIES
8 Ω
12” Low Midrange Drivers
High Efficiency
High Sounding Quality
4550
456016 Ω

Ø 307 max.
Ø281.5 max.
Ø326.5 max
(on angles)
+ Red dot
13
124.5 max. 2 x screw button
terminals
8 x Ø6.5 Holes eq. spaced
on Ø300 and on Ø308
Ø173 max.
4550 4560
TYPICAL CHARACTERISTICS
Rated impedance Z 8 16 Ω
Reference efficiency (1 W@1 m) - 98 98 dB SPL
Usable frequency range 1- 60-3000 60–3000 Hz
Power handling capacity 2(AES) - 250 250 W
Max Sound Pressure Level 3SPLmax 118 118 dB SPL
Min. impedance modulus Zmin 6.3 @ 290Hz 10.7 @ 270Hz Ω
Voice-coil inductance 4@ 1 kHz Le1k 0.98 1.68 mH
@ 10 kHz Le10k 0.47 0.79 mH
Bl product Bl 15.5 19.8 N/A
Moving mass Mms 0.048 0.048 Kg
THIELE-SMALL PARAMETERS : TYPICAL (QC LIMITS)
Resonance frequency 5Fs45 (±6) 45 (±6) Hz
DC resistance 6Re5.7 (±0.6) 9.6 (±1.0) Ω
Mechanical quality factor Qms 3.0 3.0 1
Electrical quality factor Qes 0.32 0.33 1
Total quality factor Qts 0.29 0.30 1
Mechanical suspension compliance Cms 260 260 10-6 m/N
Effective piston area Sd0.054 0.054 m2
Equivalent Cas air load Vas 0.106 0.106 m3
Max. linear excursion Xmax ±4.0 ±4.0 mm
Linear displacement volume Vd0.216 0.216 10-3 m3
Half-space efficiency 2.9 2.8 %
Unity load volume Vas Qts291010
-3 m3
ABSOLUTE MAXIMUM RATINGS
Short term max. input voltage 7Vmax 90 125 V
Max. excursion before damage Xdam 12 12 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 2.1 2.1 10-3 m3
Speaker net mass 6.4 6.4 Kg
Recommended reflex box Vb/Fb50 / 53 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 50 liter Bass-Reflex test
enclosure tuned at 53Hz.
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
4550 ■4560
12” Low Midrange Drivers