Speaker driver

The Eminence Alpha 4-8 speaker from the American Standard series is a 4-inch model with a nominal impedance of 8 Ω. With a rated power of 55W and a program power of 110W, this speaker offers great versatility, ideal for various professional and automotive audio applications.

ARTICLE N° 94842
  • Eminence Alpha 4-8
  • Manufacturer Ref: U-ALPHA_4-8
  • Series: American Standard
  • Applications: Midbass | Midrange
  • Speaker: ∅4" (102 mm)
  • Nominal impedance: 8 Ω
  • Program power: 110 W
  • Rated power: 55 W
  • Resonant frequency (fs): 123 Hz
  • Usable frequency range: 105 Hz - 12 kHz
  • Sensitivity: 88 dB
  • Total Q (Qts): 0.75
  • Voice coil: ∅1" (25 mm)
  • Maximum linear excursion (Xmax): 2.6 mm
  • Compliance equivalent volume (Vas): 1.94 liters / 0.07 cu.ft.
  • Maximum displacement volume (Vd): 15 cc
  • Volume displaced by the speaker: 0.33 liters
  • Total diameter: 4.57" (116.1 mm)
  • Moving coil: Copper
  • Spool support: Polyimide
  • Magnet: Ferrite
  • Structure materials: Pressed steel
  • Membrane: Paper
  • Membrane edge: Fabric
  • Dimensions: ∅ 116.1 mm x 58.7 mm
  • Weight: 680 g
The Eminence Alpha 4-8 speaker stands out for its ability to fit into tight spaces like car doors. This model from the American Standard series is designed to be used in both midbass and midrange, providing optimal flexibility for your audio projects.

Additionally, the Alpha 4-8 can be stacked as a column for vocal applications or combined with a tweeter and subwoofer for compact, high-performance PA or MI systems. Its compact design and power enable efficient use in high-performance audio systems, whether bookshelf speakers, satellite systems or professional audio setups.
Application type
 Midbass, Midrange
Impedance
 8 Ohm
Peak power (W)
 110
RMS power (W)
 55
Sensitivity
 88 dB
Resonance Frequency
 123 Hz
basket material
 Pressed steel
Cone material
 Paper
Magnet Material
 Ferrite
Material de la bobina
 Copper
coil ∅
 25 mm (1")
Frequency response
 105 Hz – 12 kHz
Packaging
 Single unit

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