PHL 4510/B30
12" Bass Midrange Drivers, High Efficiency, High Sounding Quality
US $333.62


- These models have been designed for Bass-Midrange applications in the field of Sound Reinforcement
- They can be used in two-way and three-way systems of 300W AES when high sounding quality and high efficiency are needed
- Maximum recommended X-over freq. is 2.0kHz, Optimum Bass-Reflex loading is situated between 40L and 50L tuned from 48Hz to 52Hz

Design Concept
Deflection Controlled Diaphram
- 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
- It is this leading edge technology which offers substantial sonic advantages
- Those advantages include sound coherency, fast transients, stable sound imaging, high sensitivity, wide frequency range and reduced directivity pattern

Vented Compact Magnet System
- Carefully optimized to obtain maximum transducing efficiency while avoiding unlinear behaviour such as coil inductance variation with position, flux modulation, harmonic distortion, rest position offset, air compression and off-axis voice-coil pushing
- Design incorporates a T-shaped and vented pole piece as well as a flux stabilizing ring
- It also takes into consideration demagnetization and cold temperatures

Intercooler System
- Entirely integrated into the loudspeaker itself, the Intercooler System extracts the heat produced by the Joule effect in the voice-coil
- It does so via 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

- Power handling capacity - 300W AES
- Reference Efficiency (1W @ 1m) - 96 dB SPL
- SPL max (continuous) - 117 dB SPL
- Usable frequency range - 40-2000 Hz
- Environmental withstanding - Outdoor

Architectural Specifications
Nominal Diameter - 300mm
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 flux stabilizing ring
Voice Coil - High-temperature stabilized copper-clad aluminium ribbon wound on vented high-strength glass polyimide
Cone Assembly - High-strength cellulose fiber cone impregnated and coated on both sides with damped resins, fitted with fabric dome, high-speed flat, damped surround and acoustically damped rear cavity

Speaker Mass - 6.40kg

Typical Characteristics
    4500 4510  
Rated Impedence    Z    6 8 Ω
Reference Efficiency (1W @ 1m) - 96 96 dB SPL
Usable Frequency Range 1 - 40-2000 40-2000 Hz
Power Handling Capacity 2 (AES) - 300 300 W
Max Sound Pressure Level 3 SPL max 117 117 dB SPL
Min. Impedence modulus min 4.8 @ 260Hz 6.5 @ 250Hz Ω
Voice-coil Inductance @ 1 kHz e1k 0.81 1.08 mH
                                   @ 10 kHz e10k 0.35 0.46 mH
BI product BI 14.2 15.1 N/A
Moving Mass ms 0.055 0.054 Kg
Thiele-Small Parameters : Typical (OC Limits)
    4500 4510  
Resonance Frequency 5 s 42 (±5) 42 (±5) Hz
DC resistance 6 e 4.2 (±0.4) 5.5 (±0.5) Ω
Mechanical Quality Factor ms 3.2 3.2 1
Electrical Quality Factor es 0.30 0.34 1
Total Quality Factor ts 0.28 0.31 1
Mechanical Suspension Compliance ms 265 265 10-6 m/N
Effective Piston Area d 0.0539 0.0539 m2
Equivalent C as Air Load as 0.108 0.108 m3
Max. Linear Excursion max ±6.0 ±6.0 mm
Linear Displacement Volume d 0.323 0.323 103 m3
Half-space Efficiency   2.5 2.3 %
Unity Load Volume VasQts2 8 10 103 m3
Absolute Maximum Ratings
    4500 4510  
Short term max. input voltage 7  max 80 100 V
Max. Excursion Before Damage dam ±12 ±12 mm
Ambient Operating Temperature   -10 to +50 °C
Storage Temperature 8   -20 to +70 °C
Environmental Conditions   Outdoor  
Application Information
    4500 4510  
Air Volume Occupied by the Driver 10   2.1 2.1 103 m3
Speaker Net Mass   6.4 6.4 Kg
Recommended Reflex Box   Vb/Fb  45 / 52 45 / 48 L/Hz
Electrical Polarity A positive voltage applied on the red terminal produces forward cone motion

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 150 liter Bass-Reflex test enclosure tuned at 40Hz.
- 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
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