\n
\n4 ohm hemp cone speaker with rich, warm, full bodied tone with fat, punchy lows, smooth, but defined highs, and a nice break up. Prominent mids, but with a warm, smooth texture.
\n
\n
\n
\n
\n
\n
\nSPECIFICATION |
\n
\n
\nNominal Basket Diameter |
\n8", 203 mm |
\n
\n
\nNominal Impedance* |
\n4 Ω |
\n
\n
\nPower Rating* |
\n
\n
\nProgram Power |
\n40 W |
\n
\n
\nWatts |
\n20 W |
\n
\n
\nResonance |
\n144 Hz |
\n
\n
\nUsable Frequency Range |
\n80 Hz - 4.6 kHz |
\n
\n
\nSensitivity* |
\n96.1 dB |
\n
\n
\nMagnet Weight |
\n15 oz. |
\n
\n
\nGap Height |
\n0.25", 6.4 mm |
\n
\n
\nVoice Coil Diameter |
\n1", 25 mm |
\n
\n
\nTHIELE & SMALL PARAMETERS |
\n
\n
\nResonant Frequency (fs) |
\n144 Hz |
\n
\n
\nDC Resistance (Re) |
\n3.64 Ω |
\n
\n
\nCoil Inductance (Le) |
\n0.33m H |
\n
\n
\nMechanical Q (Qms) |
\n18.78 |
\n
\n
\nElectromagnetic Q (Qes) |
\n0.92 |
\n
\n
\nTotal Q (Qts) |
\n0.88 |
\n
\n
\nCompliance Equivalent Volume (Vas) |
\n9.62 liters / 0.34 cu.ft. |
\n
\n
\nPeak Diaphragm Displacement Volume (Vd) |
\n36.7 cc |
\n
\n
\nMechanical Compliance of Suspension (Cms) |
\n0.13 mm/N |
\n
\n
\nBL Product (BL) |
\n5.74 T-M |
\n
\n
\nDiaphragm Mass Inc. Airload (MMs) |
\n9 grams |
\n
\n
\nEfficiency Bandwidth Product (EBP) |
\n156 |
\n
\n
\nMaximum Linear Excursion (Xmax) |
\n1.59 mm |
\n
\n
\nSurface Area of Cone (Sd) |
\n230.9 cm2 |
\n
\n
\nMaximum Mechanical Limit (Xlim) |
\nN/A |
\n
\n
\nMOUNTING INFORMATION |
\n
\n
\nRecommended Enclosure Volume |
\n
\n
\nSealed |
\nAcceptable |
\n
\n
\nVented |
\nAcceptable |
\n
\n
\nDriver Volume Displaced |
\n0.018 cu.ft. / 0.51 liters |
\n
\n
\nOverall Diameter |
\n8.24", 209.3 mm |
\n
\n
\nBaffle Hole Diameter |
\n7.13", 181.1 mm |
\n
\n
\nFront Sealing Gasket |
\nYes |
\n
\n
\nRear Sealing Gasket |
\nN/A |
\n
\n
\nMounting Holes Diameter |
\n0.22", 5.6mm |
\n
\n
\nMounting Holes B.C.D. |
\n7.75", 196.9mm |
\n
\n
\nDepth |
\n3.06", 77.7 mm |
\n
\n
\nNet Weight |
\n3.1 lbs, 1.41 kg |
\n
\n
\nShipping Weight |
\n3.9 lbs, 1.77 kgs |
\n
\n
\nMATERIALS OF CONSTRUCTION |
\n
\n
\nCoil Construction |
\nCopper voice coil |
\n
\n
\nCoil Former |
\nPolyimide former |
\n
\n
\nMagnet Composition |
\nFerrite magnet |
\n
\n
\nCore Details |
\nNon-vented core |
\n
\n
\n |
\n |
\n
\n
\nBasket Materials |
\nPressed steel basket |
\n
\n
\nCone Composition |
\nHemp cone |
\n
\n
\nCone Edge Composition |
\nPaper cone edge |
\n
\n
\nDust Cap Composition |
\nZurette dust cap |
\n
\n
\n
\n
\n
Search Terms: eminence 820h, eminence usa, 820h, eminence dj