Eminence Professional Series Delta Pro-18A 18" Pro Audio Subwoofer Speaker, 500 Watts at 8 Ohms

• THE EMINENCE DELTA PRO-18A 18" WOOFER HANDLES 500 WATTS RMS & 1,000 WATTS PROGRAM
• HIGH 6.7MM XMAX FOR A CLEAN STRONG BASS SOUND DOWN TO 37HZ
• OVERSIZED TOP PLATE & LARGE POLE VENT HELP KEEP THE VOICE COIL COOL
• THE DELTA PRO-18A IS DESIGNED FOR PORTED SUBWOOFER CABINETS FROM 3.0 TO 10.5 CUBIC FEET
• FOR ALL MODERATELY POWERED BASS APPLICATIONS
• 8 OHMS

Specifications
Nominal Basket Diameter	18" / 457.2mm
Impedance	4 or 8 ohms
RMS Power Rating	500 Watts
Program Power Handling	1,000 Watts
Frequency Response	37Hz - 2kHz
Sensitivity (1W/1m)	96dB
Voice Coil Diameter	2.5" / 63.5mm
Gap Height	.38" / 9.53mm
Rec. Enclosure Volume(Vented)	3.0-10.5cu. ft./85-297 Liters
Mounting Information
Overall Diameter	18" / 457.2mm
Bolt Circle Diameter	17.25" / 438.2mm
Baffle Cutout Diameter	16.57" / 420.9mm
No. Of Mounting Holes	8
Mounting Hole Diameter	0.28" / 7.1mm
Overall Depth	8.13" / 206.5mm
Magnet Weight	67 oz.
Net Weight	17.0lbs. / 7.71kg.
Shipping Weight	20.5lbs. / 9.3kg.
Materials
Basket	Die-Cast Aluminum
Voice Coil	Polyimide
Core Details	Vented & Extended
Cone	Paper
Surround	Cloth
Dist Cap	Solid Composition Paper
Magnet	Ferrite
Thiele-Small Parameters
Resonant Frequency (fs)	28 Hz
Impedance (Re)	5.3 ohms
Coil Inductance (Le)	3.43mH
Electromagnetic Q (Qes)	.33
Mechanical Q (Qms)	10.38
Total Q (Qts)	.32
Compliance Equivalent Vol. (Vas)	493.19 Liters/17.41cu. ft.
Voice Coil Overhang (Xmax)	6.7mm
Diaphragm Mass (Mms)	128 Grams
BL Factor (BL)	18.9 T-M
Surface Area of Cone (Sd)	.1188 m2
DELTA PRO-18A RESPONSE CURVE