Component Subwoofer Eminence DeltaPro 18A
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* | 8 ohms |
| Power Rating** | |
| Watts | 500W |
| Music Program | 1000W |
| Resonance | 28Hz |
| Usable Frequency Range | 37Hz – 0.25kHz |
| Sensitivity*** | 96dB |
| Magnet Weight | 67 oz. |
| Gap Height | 0.38″, 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 / 17.41 cu.ft. |
| Peak Diaphragm Displacement Volume (Vd) | 796cc |
| Mechanical Compliance of Suspension (Cms) | 0.25mm/N |
| BL Product (BL) | 18.9 T-M |
| Diaphragm Mass Inc. Airload (MMs) | 128 grams |
| Efficiency Bandwidth Product (EBP) | 84 |
| Maximum Linear Excursion (Xmax) | 6.7mm |
| Surface Area of Cone (Sd) | 1188 cm2 |
| Maximum Mechanical Limit (Xlim) | 15mm |
| Mounting Information | |
| Recommended Enclosure Volume | |
| Sealed | N/a |
| Vented | 85-297 liters / 3-10.5 cu.ft. |
| Driver Volume Displaced | 367 cu.in. / 6.01 liters |
| Overall Diameter | 18″, 457.2mm |
| Baffle Hole Diameter | 16.57″, 420.9mm |
| Front Sealing Gasket | Fitted as standard |
| Rear Sealing Gasket | Fitted as standard |
| Mounting Holes Diameter | 0.28″, 7.1mm |
| Mounting Holes B.C.D. | 17.25″, 438.2mm |
| Depth | 8.13″, 207mm |
| Net Weight | 17 lbs, 7.7 kg |
| Shipping Weight | 20.5 lbs, 9.3 kgs |
| Materials of Construction | |
| Coil Construction | Copper voice coil |
| Coil Former | Polyimide former |
| Magnet Composition | Ferrite magnet |
| Core Details | Vented and extended core |
| Basket Materials | Die-cast aluminum basket |
| Cone Composition | Paper cone |
| Cone Edge Composition | Cloth cone edge |
| Dust Cap Composition | Solid composition paper dust cap |
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