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\nEMINENCE USA BETA-8CX (8 ohm) Recommended for professional audio mid-range reproduction in sealed enclosures. Also suitable for mid-bass or floor monitor applications in vented 2-way cabinets. A very capable stand-alone driver, The Beta 8CX has a threaded pole-piece so that a screw-on, 1” exit high frequency driver can be attached to form a coaxial set up. A screen type dust cap allows the output of the high frequency driver to pass through the center. A small, 60 degree conical horn is attached to the top of the pole-piece beneath the dust cap.
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\nSPECIFICATION |
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\nNominal Basket Diameter |
\n8", 203 mm |
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\nNominal Impedance* |
\n8 Ω |
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\nPower Rating* |
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\nProgram Power |
\n500 W |
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\nWatts |
\n250 W |
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\nResonance |
\n62 Hz |
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\nUsable Frequency Range |
\n95 Hz - 3.3 kHz |
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\nSensitivity* |
\n92.9 dB |
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\nMagnet Weight |
\n38 oz. |
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\nGap Height |
\n0.312", 7.9 mm |
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\nVoice Coil Diameter |
\n2", 51 mm |
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\nTHIELE & SMALL PARAMETERS |
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\nResonant Frequency (fs) |
\n62 Hz |
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\nDC Resistance (Re) |
\n5.37 Ω |
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\nCoil Inductance (Le) |
\n0.67m H |
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\nMechanical Q (Qms) |
\n6.57 |
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\nElectromagnetic Q (Qes) |
\n0.31 |
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\nTotal Q (Qts) |
\n0.29 |
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\nCompliance Equivalent Volume (Vas) |
\n21.43 liters / 0.76 cu.ft. |
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\nPeak Diaphragm Displacement Volume (Vd) |
\n67.2 cc |
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\nMechanical Compliance of Suspension (Cms) |
\n0.35 mm/N |
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\nBL Product (BL) |
\n11.21 T-M |
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\nDiaphragm Mass Inc. Airload (MMs) |
\n19 grams |
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\nEfficiency Bandwidth Product (EBP) |
\n201 |
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\nMaximum Linear Excursion (Xmax) |
\n3.2 mm |
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\nSurface Area of Cone (Sd) |
\n210 cm2 |
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\nMaximum Mechanical Limit (Xlim) |
\n6.9 mm |
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\nMOUNTING INFORMATION |
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\nRecommended Enclosure Volume |
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\nSealed |
\n3.4-9.91 liters / 0.12-0.35 cu.ft. |
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\nVented |
\n7.08-16.99 liters / 0.25-0.6 cu.ft. |
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\nDriver Volume Displaced |
\n0.028 cu.ft. / 0.79 liters |
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\nOverall Diameter |
\n8.24", 209.3 mm |
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\nBaffle Hole Diameter |
\n7.13", 181.1 mm |
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\nFront Sealing Gasket |
\nYes |
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\nRear Sealing Gasket |
\nYes |
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\nMounting Holes Diameter |
\n0.22", 5.6mm |
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\nMounting Holes B.C.D. |
\n7.75", 196.9mm |
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\nDepth |
\n3.5", 88.9 mm |
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\nNet Weight |
\n6.8 lbs, 3.08 kg |
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\nShipping Weight |
\n7.5 lbs, 3.4 kgs |
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\nMATERIALS OF CONSTRUCTION |
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\nCoil Construction |
\nCopper voice coil |
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\nCoil Former |
\nKapton former |
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\nMagnet Composition |
\nFerrite magnet |
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\nCore Details |
\nTapered Coax |
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\nBasket Materials |
\nPressed steel basket |
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\nCone Composition |
\nPaper Cone |
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\nCone Edge Composition |
\nSealed cloth cone edge |
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\nDust Cap Composition |
\nZurette dust cap |
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