The P Audio FL-18ELF is an 18 inch diameter (476mm) extended low frequency sub driver. This design allows for extended ultra low frequency operation to 30Hz and is ideal for deep bass applications such as high output dance floor designs. The die cast aluminum chassis and high energy Neodymium magnet system also make the FL-18ELF very suited for portable sub woofer applications. The rated operating bandwidth is 30HZ to 100Hz. The FL-18ELF has a large format 4 inch (101.6mm) voice coil assembly with an extended voice coil design to produce increased maximum linear excursion capability. The edge wound rectangular wire and high temperature adhesive systems produce very high efficiency. The extended low frequency range of the FL-18ELF requires very high linear excursion for clean deep bass reproduction. The large diameter voice coil insures very high power handling and high reliability in critical deep bass applications where substantial input power is required space. Like all P Audio products, advanced finite element analysis and parameter optimization make this design ideally suited for ultra low frequency applications.

GENERAL SPECIFICATIONS

Nominal Impedance 8 Ω
Power 800 Watt (rms)
SPL 1W@1M average sensitivity 98 dB
Frequency Response 30Hz - 100Hz
Dimension Ø x H (cm) 47.6 x 23.2
Net Weight 9.6 kg (21.1 lbs)
Shipping Weight 11.6 kg (25.5 lbs)
Packing Dimension H x W x D (cm) 49.5 x 49.5 x 27.5 (2.4cu.ft)
19.5" x 19.5" x 10.8"

PHYSICAL SPECIFICATIONS

Magnet type Neodymium
Voice Coil Diameter 101.6 mm (4 inch)

THIELE/SMALL PARAMETERS

Resonance Frequency Fs 36 Hz
DC. Resistance Re 6.1 Ω
Coil Inductance Le 0.76 mH
Mechanical Q Factor Qms 7.67
Electrical Q Factor Qes 0.41
Total Q Factor Qts 0.39
BL Product BL 25.17 Tm
Effective Moving Mass Mms 191.17 g
Equivalent Cas Air-Load Vas 209.80 Liters
Effective Piston Area Sd 0.12 Sqm
Half-Space Efficiency Eff 2.25 %
Airgap Height Hag 10.0 mm
Voice Coil Height Hvc 26.0 mm
Voice Coil Overhang Xmax 8.0 mm

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