P.Audio

SD SERIES  -  18" WOOFER  -  SD-18

LARGE 4.5" VOICE COIL W/ HIGH POWER HANDLING MAKE THIS A POPULAR 18" WOOFER!

SD-18

Item Price: $409.95

WOOFER MODEL

SD-18

SPECIFICATIONS

Nominal Basket Diameter

18" / 460mm

Impedance

8 ohms

RMS Power Rating

800 Watts

Program Power  1600 Watts  

Frequency Response

30Hz - 1.5kHz

Sensitivity (1W/1m)

98dB

Voice Coil Diameter

4.5" / 114.3mm

Voice Coil Material Anodized CCAW+fiberglass
Terminal Type Gold Plated Push
Bobbin Material Fiberglass
Basket Cast Aluminum
Cone Material Paper
Surround Material Treated Cloth
Magnet Material Ferrite
Net Weight 15.32 kg. / 33.7 lbs.

MOUNTING INFORMATION

Bolt Circle Diameter 17.72" / 450mm
No. Of Mounting Holes 8

THIELE-SMALL PARAMETERS

Resonant Frequency (fs) 33 Hz
Impedance (Re) 5.1 ohms
Coil Inductance (Le) 1.95mH
Mechanical Q (Qms) 7.11
Electromagnetic Q (Qes) .27
Total Q (Qts) .26
Compliance Equivalent Vol. (Vas) 264.3 Liters/10.41cu. ft.
Voice Coil Overhang (Xmax) 5.0mm
BL Factor (BL) 35.8
Surface Area of Cone (Sd) .125m2
Reference Efficiency 3.42%

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