18 Inch Speakers :: Delta-Pro-18C

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Delta Pro 18C, 18" 4 ohm Pro Audio Speaker

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DELTA PRO-18C 4 ohm Professional Series Speaker

Long Throw Subwoofer for very small vented boxes. Over-size top plate and large pole vent help keep the coil cool.

SPECIFICATION
Nominal Basket Diameter	18'', 457mm
Nominal Impedance*	4 ohms
Power Rating
Watts	500W
Music Program	1000W
Resonance	28Hz
Usable Frequency Range	37Hz-250Hz
Sensitivity***	96
Magnet Weight	67 oz.
Gap Height	0.380'', 9.53mm
Voice Coil Diameter	2.5'', 63.5mm

THIELE & SMALL PARAMETERS
Resonant Frequency (fs)	28Hz
DC Resistance (Re)	5.3
Coil Inductance (Le)	3.43mH
Mechanical Q (Qms)	10.38
Electromagnetic Q (Qes)	0.33
Total Q (Qts)	0.32
Compliance Equivalent Volume (Vas)	493.2 liters / 17.41cu.ft.
Peak Diaphragm Displacement Volume (Vd)	796cc
Mechanical Compliance of Suspension (Cms)	0.25mm/N
BL Product (BL)	18.9 T-M
Diaphram Mass inc. Airload (Mms)	128 grams
Efficiency Bandwidth Product (EBP)	84
Maximum Linear Excursion (Xmax)	6.7mm
Surface Area of Cone (Sd)	1188.0 cm2
Maximum Mechanical Limit (Xlim)	15.0mm