Eminence DELTA PRO-12A: 12″ Pro Audio Woofer
Recommended for professional audio in both sealed and vented enclosures. Ideal for full-range, mid/hi, and monitor wedges.
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| SPECIFICATION | |
| Nominal Basket Diameter | 12″, 305 mm |
| Nominal Impedance* | 8 Ω |
| Power Rating* | |
| Program Power | 800 W |
| Watts | 400 W |
| Resonance | 51 Hz |
| Usable Frequency Range | 52 Hz – 4.5 kHz |
| Sensitivity* | 99.2 dB |
| Magnet Weight | 80 oz. |
| Gap Height | 0.375″, 9.5 mm |
| Voice Coil Diameter | 2.5″, 64 mm |
| THIELE & SMALL PARAMETERS | |
| Resonant Frequency (fs) | 51 Hz |
| DC Resistance (Re) | 5.71 Ω |
| Coil Inductance (Le) | 0.84m H |
| Mechanical Q (Qms) | 7.56 |
| Electromagnetic Q (Qes) | 0.37 |
| Total Q (Qts) | 0.35 |
| Compliance Equivalent Volume (Vas) | 81.7 liters / 2.89 cu.ft. |
| Peak Diaphragm Displacement Volume (Vd) | 242 cc |
| Mechanical Compliance of Suspension (Cms) | 0.21 mm/N |
| BL Product (BL) | 15.3 T-M |
| Diaphragm Mass Inc. Airload (MMs) | 48 grams |
| Efficiency Bandwidth Product (EBP) | 138 |
| Maximum Linear Excursion (Xmax) | 4.6 mm |
| Surface Area of Cone (Sd) | 532.4 cm2 |
| Maximum Mechanical Limit (Xlim) | 13.7 mm |
| MOUNTING INFORMATION | |
| Recommended Enclosure Volume | |
| Sealed | 28-35 liters / 1-1.25 cu.ft. |
| Vented | 31-91 liters / 1.1-3.2 cu.ft. |
| Driver Volume Displaced | 0.09 cu.ft. / 2.55 liters |
| Overall Diameter | 12.38″, 314.5 mm |
| Baffle Hole Diameter | 11.07″, 281.2 mm |
| Front Sealing Gasket | Yes |
| Rear Sealing Gasket | Yes |
| Mounting Holes Diameter | 0.27″, 6.9mm |
| Mounting Holes B.C.D. | 11.69″, 296.9mm |
| Depth | 6.22″, 158 mm |
| Net Weight | 16.3 lbs, 7.39 kg |
| Shipping Weight | 18 lbs, 8.16 kgs |
| MATERIALS OF CONSTRUCTION | |
| Coil Construction | Aluminum 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 |
