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- Eminence Beta-12LTA - 8 ohm 12" 225W Pro Audio Woofer
Eminence Beta-12LTA - 8 ohm 12" 225W Pro Audio Woofer
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Recommended for professional audio as a woofer in small sealed monitor, or as a PA woofer or monitor. in a vented enclosure.
| Specification | |
| Nominal Basket Diameter | 12", 305 mm |
| Nominal Impedance* | 8 Ω |
| Power Rating* | |
| Program Power | 450 W |
| Watts | 225 W |
| Resonance | 45 Hz |
| Usable Frequency Range | 48 Hz - 8 kHz |
| Sensitivity* | 97.7 dB |
| Magnet Weight | 38 oz. |
| Gap Height | 0.31", 7.9 mm |
| Voice Coil Diameter | 2", 51 mm |
| Thiele & Small Parameters | |
| Resonant Frequency (fs) | 45 Hz |
| DC Resistance (Re) | 7.37 Ω |
| Coil Inductance (Le) | 0.83m H |
| Mechanical Q (Qms) | 6.44 |
| Electromagnetic Q (Qes) | 0.55 |
| Total Q (Qts) | 0.51 |
| Compliance Equivalent Volume (Vas) | 136.3 liters / 4.81 cu.ft. |
| Peak Diaphragm Displacement Volume (Vd) | 170 cc |
| Mechanical Compliance of Suspension (Cms) | 0.34 mm/N |
| BL Product (BL) | 11.7 T-M |
| Diaphragm Mass Inc. Airload (MMs) | 36 grams |
| Efficiency Bandwidth Product (EBP) | 82 |
| Maximum Linear Excursion (Xmax) | 3.2 mm |
| Surface Area of Cone (Sd) | 532.4 cm2 |
| Maximum Mechanical Limit (Xlim) | 8 mm |
| Mounting Information | |
| Recommended Enclosure Volume | |
| Sealed | 14-51 liters / 0.5-1.8 cu.ft. |
| Vented | 56.6-116 liters / 2-4.1 cu.ft. |
| Driver Volume Displaced | 0.071 cu.ft. / 2 liters |
| Overall Diameter | 12.03", 305.6 mm |
| Baffle Hole Diameter | 11.07", 281.2 mm |
| Front Sealing Gasket | Yes |
| Rear Sealing Gasket | Yes |
| Mounting Holes Diameter | 0.25", 6.4mm |
| Mounting Holes B.C.D. | 11.59", 294.4mm |
| Depth | 4.47", 113.5 mm |
| Net Weight | 8.1 lbs, 3.67 kg |
| Shipping Weight | 10.2 lbs, 4.63 kgs |
| Materials of Construction | |
| Coil Construction | Copper voice coil |
| Coil Former | Polyimide former |
| Magnet Composition | Ferrite magnet |
| Core Details | Vented core |
| Basket Materials | Pressed steel basket |
| Cone Composition | Paper cone |
| Cone Edge Composition | Cloth cone edge |
| Dust Cap Composition | Solid composition paper dust cap |
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