Eminence ALPHA 4-8 4" Full Range, Midbass, Midrange 8-Ohm Pro Audio Speaker Pair

Eminence ALPHA 4-8 4" Full Range, Midbass, Midrange 8-Ohm Pro Audio Speaker Pair

Eminence

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SKU:
Eminence ALPHA 4-8 T.C.
Condition:
New
UPC:
876358003815
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Eminence ALPHA 4-8 4" Full Range, Midbass, Midrange 8-Ohm Pro Audio Speaker Pair

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
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