Component Speaker Eminence Beta 12A
Recommended for professional audio and bass guitar applications as a woofer in a vented enclosure. Also works well for PA in a sealed or bandpass enclosure.
| Specification | |
| Nominal Basket Diameter | 12″, 304.8mm |
| Nominal Impedance* | 8 ohms |
| Power Rating** | |
| Watts | 250W |
| Music Program | 500W |
| Resonance | 47Hz |
| Usable Frequency Range | 43Hz – 3.8kHz |
| Sensitivity*** | 98dB |
| Magnet Weight | 38 oz. |
| Gap Height | 0.31″, 7.92mm |
| Voice Coil Diameter | 2″, 50.8mm |
| Thiele & Small Parameters | |
| Resonant Frequency (fs) | 47Hz |
| DC Resistance (Re) | 5 |
| Coil Inductance (Le) | 0.64mH |
| Mechanical Q (Qms) | 6 |
| Electromagnetic Q (Qes) | 0.5 |
| Total Q (Qts) | 0.46 |
| Compliance Equivalent Volume (Vas) | 120.1 liters / 4.2 cu.ft. |
| Peak Diaphragm Displacement Volume (Vd) | 237cc |
| Mechanical Compliance of Suspension (Cms) | 0.29mm/N |
| BL Product (BL) | 10.8 T-M |
| Diaphragm Mass Inc. Airload (MMs) | 40 grams |
| Efficiency Bandwidth Product (EBP) | 94 |
| Maximum Linear Excursion (Xmax) | 4.4mm |
| Surface Area of Cone (Sd) | 538.9 cm2 |
| Maximum Mechanical Limit (Xlim) | 11mm |
| Mounting Information | |
| Recommended Enclosure Volume | |
| Sealed | 25.5-35.4 liters / 0.9-1.25 cu.ft. |
| Vented | 36.8-139 liters / 1.3-4.9 cu.ft. |
| Driver Volume Displaced | 122 cu.in. / 2 liters |
| Overall Diameter | 12.03″, 305.5mm |
| Baffle Hole Diameter | 10.95″, 278.1mm |
| Front Sealing Gasket | Fitted as standard |
| Rear Sealing Gasket | Fitted as standard |
| Mounting Holes Diameter | 0.25″, 6.4mm |
| Mounting Holes B.C.D. | 11.59″, 294.3mm |
| Depth | 4.57″, 116mm |
| Net Weight | 7.5 lbs, 3.4 kg |
| Shipping Weight | 9.7 lbs, 4.4 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 | 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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