EM Series

EM15-LB300

P-Audio EM15-LB300 15" 300W Low Frequency Driver

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The P Audio EM15-LB300 is a high performance 15 inch (381mm) diameter low frequency/full range transducer. The EM15-LB300 features a very large diameter spider that substantially reduces component stress and improves both linearity and long term reliability. The large diameter suspension elements combine with the 3 inch (76mm) voice coil diameter and extended winding length to produce controlled Xmax performance and very tight full range sonic character. The EM15-LB300 is an excellent choice for full range two way designs. The EM15-LB300 features 1200 watt peak power handling (300 watts continuous) and extended bandwidth frequency response. The 3 inch voice coil diameter provides excellent power handling and controlled moving mass. The result is a high efficiency design that offers high impact response and high reliability. The 3 inch coil design offers less moving mass than larger voice coil designs. The reduced moving mass offers superior transient response as well as extended high frequency bandwidth. The EM15-LB300 offers a 40Hz to 2000Hz useable bandwidth. The performance of the EM15-LB300 is optimized when using a high pass 4th order Butterworth filter tuned to near the enclosure vent frequency. Although the woofer is rated to 2000Hz, typical high frequency crossover points will be based on the compression driver and horn combination used for the high frequency section.	General Specifications Nominal diameter............................................... 381 mm/15 in Power rating..........................................................300 W(AES) Nominal impedance............................................................ 8 Sensitivity........................................................................ 96 dB Frequency range.....................................................40-2000 Hz Chassis type.....................................................Heavy Duty Stamped Steel Magnet type...................................................................Ferrite Magnet weight...............................................2.31 kg/81.4 oz Voice coil diameter.......................................... 76.2 mm/3 in Coil material......................... Copper Clad Aluminium Former material.......................................................Glass Fibre Cone material.................................................................Paper Surround material............................................................Cloth Suspension............................ Single X-max.............................................................3.4 mm/0.13 in Gap depth.......................................................10 mm/0.39 in Voice coil winding width................................. 16.8 mm/0.66 in Net Weight......................................................... 8.2 kg/18.1 lb Packing Dimension WxDxH (mm)415mm x 415mm x 220mm Shipping Weight................................................ 9.2 kg/20.3 lb Small Signal Parameters Re.................................................................................... 5.5 Fs................................................................................... 49 Hz Mms.................................................................. 85.84 g/3.03 oz Mmd.................................................................. 71.46 g/2.52 oz Qms.................................................................................... 9.07 Qes................................................................................... 0.53 Qts.................................................................................... 0.50 Vas................................................................... 12.88 lt/4.34 ft3 SD............................................................................855 cm2 BI.............................................................................. 16.68 Tm Cms......................................................................1.2e-04 m/N Rms......................................................................... 2.97 Ns/m Le (at 1kHz)................................................................0.52 mH

The P Audio EM15-LB300 is a high performance 15 inch (381mm) diameter low frequency/full range transducer. The EM15-LB300 features a very large diameter spider that substantially reduces component stress and improves both linearity and long term reliability. The large diameter suspension elements combine with the 3 inch (76mm) voice coil diameter and extended winding length to produce controlled Xmax performance and very tight full range sonic character. The EM15-LB300 is an excellent choice for full range two way designs.

The EM15-LB300 features 1200 watt peak power handling (300 watts continuous) and extended bandwidth frequency response. The 3 inch voice coil diameter provides excellent power handling and controlled moving mass. The result is a high efficiency design that offers high impact response and high reliability. The 3 inch coil design offers less moving mass than larger voice coil designs. The reduced moving mass offers superior transient response as well as extended high frequency bandwidth.

The EM15-LB300 offers a 40Hz to 2000Hz useable bandwidth. The performance of the EM15-LB300 is optimized when using a high pass 4th order Butterworth filter tuned to near the enclosure vent frequency. Although the woofer is rated to 2000Hz, typical high frequency crossover points will be based on the compression driver and horn combination used for the high frequency section.

General Specifications

Nominal diameter............................................... 381 mm/15 in
Power rating..........................................................300 W(AES)
Nominal impedance............................................................ 8
Sensitivity........................................................................ 96 dB
Frequency range.....................................................40-2000 Hz
Chassis type.....................................................Heavy Duty Stamped Steel
Magnet type...................................................................Ferrite
Magnet weight...............................................2.31 kg/81.4 oz
Voice coil diameter.......................................... 76.2 mm/3 in
Coil material......................... Copper Clad Aluminium
Former material.......................................................Glass Fibre
Cone material.................................................................Paper
Surround material............................................................Cloth
Suspension............................ Single
X-max.............................................................3.4 mm/0.13 in
Gap depth.......................................................10 mm/0.39 in
Voice coil winding width................................. 16.8 mm/0.66 in
Net Weight......................................................... 8.2 kg/18.1 lb
Packing Dimension WxDxH (mm)415mm x 415mm x 220mm
Shipping Weight................................................ 9.2 kg/20.3 lb

Small Signal Parameters

Re.................................................................................... 5.5
Fs................................................................................... 49 Hz
Mms.................................................................. 85.84 g/3.03 oz
Mmd.................................................................. 71.46 g/2.52 oz
Qms.................................................................................... 9.07
Qes................................................................................... 0.53
Qts.................................................................................... 0.50
Vas................................................................... 12.88 lt/4.34 ft3
SD............................................................................855 cm2
BI.............................................................................. 16.68 Tm
Cms......................................................................1.2e-04 m/N
Rms......................................................................... 2.97 Ns/m
Le (at 1kHz)................................................................0.52 mH