Eminence ALPHA48 4 in. Full-Range Pair 8 ohm

Features Perfect driver for high output line array use Flat response from 90 to 12,000 hz Cosmetic mounting flange for a clean look without flush mounting Naturally damped paper cone minimizes resonancesSpecifications Nominal Basket Diameter: 4 in. Nominal Impedance: 8 Ohms Program Power: 110 W Resonance: 123 Hz Frequency Range: 123 Hz DC Resistance:6.73 Ohms Weight: 4 lbs - SKU: TNSR2853

This table charts the specifications for the Alpha 4-4 (Pair) speaker * Nominal Basket Diameter: 4-in , 102 mm. * Nominal Impedance*: 4 Ohms. * Power Rating*. * Program Power: 110 W. * Watts: 55 W. * Resonance: 120 Hz. * Usable Frequency Range: 105 Hz - 10 kHz. * Sensitivity*: 88 dB. * Magnet Weight: 10 oz.. * Gap Height: 0.14-in , 3.7 mm. * Voice Coil Diameter: 1-in , 25 mm. * Thiele & Small Parameters. * Resonant Frequency (fs): 120 Hz. * DC Resistance (Re): 3.42 Ohms. * Coil Inductance (Le): 0.18m H. * Mechanical Q (Qms): 6.41. * Electromagnetic Q (Qes): 0.7. * Total Q (Qts): 0.63. * Compliance Equivalent Volume (Vas): 1.76 liters / 0.06 cu.ft.. * Peak Diaphragm Displacement Volume (Vd): 15 cc. * Mechanical Compliance of Suspension (Cms): 0.38 mm/N. * BL Product (BL): 4.12 T-M. * Diaphragm Mass Inc. Airload (MMs): 5 grams. * Efficiency Bandwidth Product (EBP): 172. * Maximum Linear Excursion (Xmax): 2.6 mm. * Surface Area of Cone (Sd): 57.7 cm2. * Maximum Mechanical Limit (Xlim): 4.5 mm. ----------------------------------- Recommended Enclosure Volume; * Sealed: 1.84-4.53 liters / 0.07-0.16 cu.ft. . * Vented: 3.96-7.08 liters / 0.14-0.25 cu.ft. . * Driver Volume Displaced: 0.012 cu.ft. / 0.33 liters. * Overall Diameter: 4.57-in , 116.1 mm. * Baffle Hole Diameter: 3.77-in , 95.8 mm. * Front Sealing Gasket: Yes. * Rear Sealing Gasket: Yes. * Mounting Holes Diameter: 0.15-in , 3.8mm. * Mounting Holes B.C.D.: 4.25-in , 108mm. * Depth: 2.31-in , 58.7 mm. * Net Weight: 1.5 lbs, 0.68 kg. * Shipping Weight: 1.9 lbs, 0.86 kgs. * Materials of Construction. * Coil Construction: Copper voice coil. * Coil Former: Polyimide former. * Magnet Composition: Ferrite magnet. * Core Details: Non-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.