Eminence ALPHA 4-8 4in Speaker 55 Watts (Sold in Pairs) - The Speaker Factory
Eminence ALPHA 4-8 4in Speaker 55 Watts (Sold in Pairs) - The Speaker Factory

Brand: Eminence

Product Code: ALPHA 4-8

Availability:In stock

$110.00 110.00

Perfectly suited for line arrays, car doors and side panels, and other tight fitting applications, the Alpha 4 is a very versatile 110-watt driver that can be used full range, as a midbass, or as a midrange. They can be stacked by themselves in a column for vocal applications or in conjunction with a tweeter and a sub for compact, high-performance PA or MI applications.

SPECIFICATION
Nominal Basket Diameter 4", 102 mm
Nominal Impedance* 8 Ω
Power Rating*
Program Power 110 W
Watts 55 W
Resonance 123 Hz
Usable Frequency Range 105 Hz - 12 kHz
Sensitivity* 88 dB
Magnet Weight 10 oz.
Gap Height 0.144", 3.7 mm
Voice Coil Diameter 1", 25 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs) 123 Hz
DC Resistance (Re) 6.73 Ω
Coil Inductance (Le) 0.28m H
Mechanical Q (Qms) 6.83
Electromagnetic Q (Qes) 0.84
Total Q (Qts) 0.75
Compliance Equivalent Volume (Vas) 1.94 liters / 0.07 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 15 cc
Mechanical Compliance of Suspension (Cms) 0.42 mm/N
BL Product (BL) 4.94 T-M
Diaphragm Mass Inc. Airload (MMs) 4 grams
Efficiency Bandwidth Product (EBP) 146
Maximum Linear Excursion (Xmax) 2.6 mm
Surface Area of Cone (Sd) 57.7 cm2
Maximum Mechanical Limit (Xlim) 4.5 mm
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed 1.87-8.5 liters / 0.07-0.3 cu.ft.
Vented 2.27-4.25 liters / 0.08-0.15 cu.ft.
Driver Volume Displaced 0.012 cu.ft. / 0.33 liters
Overall Diameter 4.57", 116.1 mm
Baffle Hole Diameter 3.77", 95.8 mm
Front Sealing Gasket Yes
Rear Sealing Gasket Yes
Mounting Holes Diameter 0.15", 3.8mm
Mounting Holes B.C.D. 4.25", 108mm
Depth 2.31", 58.7 mm
Net Weight 1.5 lbs, 0.68 kg
Shipping Weight 3.3 lbs, 1.5 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