P-Audio's truly outstanding E-series drivers represent excellent value for money - and we're so confident in them, we're prepared to back them up with a three year warranty for all of our UK mainland sales. P-Audio's E-18ELF is an extended low frequency loudspeaker designed to handle the ultra low frequency requirements of music playback applications. With a lower limit of 30Hz, the E18-ELF will make sure your dance floor rumbles all night!
The E Series II E-18ELF is an 18 inch (460mm) diameter transducer that features a large format 4 inch (1016mm) voice coil design to ensure very high power handling and high reliability. The E-18ELF is similar to the E Series II E-18LF but has been optimised to additional extended low frequency response down to 30Hz.
The E-18ELF should be used whenever very low, extended bass response is required for special effects or when program material contains sufficient content in the extended sub bass range.
The E-18ELF features a rigid stamped steel chassis coupled to a large diameter Ferrite permanent magnetic structure. The large format voice coil features a high conductivity copper voice coil with substantial thermal capacity. Ultra high temperature adhesive systems are employed to ensure maximum reliability. The E-18ELF has been optimised through the use of computer based measurement and modeling. The extended voice coil length provides increased linear excursion at high input power levels.
General Specifications
- Nominal Impedance 8 Ohm
- Power 800 Watt (rms)
- SPL 1W@1M average sensitivity 97 dB
- Frequency Response 30Hz - 100Hz
- Dimension Dia x H (cm) 46 x 20
- Net Weight 10.6 kg (23.3 lbs)
- Shipping Weight 12.6 kg (27.7 lbs)
- Packing Dimension H x W x D (cm) 49.5 x 49.5 x 24.5 (2.1cu.ft) 19.5" x 19.5" x 9.7"
Physical Specifications
- Magnet type Ferrite
- Voice Coil Diameter 101.6 mm (4 inch)
Thiele/small Parameters
- Resonance Frequency Fs 30 Hz
- DC. Resistance Re 6.0 Ohm
- Coil Inductance Le 1.00 mH
- Mechanical Q Factor Qms 7.39
- Electrical Q Factor Qes 0.47
- Total Q Factor Qts 0.44
- BL Product BL 21.53 Tm
- Effective Moving Mass Mms 188.31 g
- Equivalent Cas Air-Load Vas 263.57 Liters
- Effective Piston Area Sd 0.1134 Sqm
- Half-Space Efficiency Eff 1.56 %
- Airgap Height Hag 8.0 mm
- Voice Coil Height Hvc 23.0 mm
- Voice Coil Overhang Xmax 7.5 mm
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