American Musical Supply
American Musical Supply
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Eminence American Standard Beta 15A - 15" Replacement Speaker

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Product Description

The Eminence Beta 15A Speaker features optimized frequency response and power handling for use as a replacement speaker for two and three way speakers systems, bass and keyboard combo amps, guitar combo amps, and stage monitors. 8 ohms and 300 watts, 600 watts music program rating.

Materials of Construction

  • Ferrite magnet
  • Pressed steel basket
  • Polyamide-imide coated copper voice coil
  • Paper cone/cloth cone edge
  • Solid composition paper dust cap

Product Specifications


  • Nominal Basket Diameter: 15 inches, 318mm
  • Impedance: 8 ohms
  • Power Rating:
    • Music Program: 600 Watts
    • Watts: 300 Watts
  • Resonance: 35Hz
  • Usable Frequency Range: 45Hz - 3.7kHz
  • Average Sensitivity: 1W @ 1m 98 dB
  • Magnet Weight: 34oz.
  • Gap Height: 0.312 inches, 7.94mm
  • Voice Coil Diameter: 2 inches, 50.8mm

Mounting Information

  • Overall Diameter: 15.15 inches, 384.8mm
  • Baffle Hole Diameter: 13.77 inches, 349.6mm
  • Front Sealing Gasket: fitted as standard
  • Rear Sealing Gasket: fitted as standard
  • Mounting Holes Diameter: 0.25 inches, 6.4mm
  • Mounting Hole B.C.D.: 14.56 inches, 369.9mm
  • Depth: 6.05 inches, 153.6mm
  • Shipping Weight: 11 lbs., 5 kg

Thiele-Small Parameters

  • Resonant Frequency: 35Hz
  • Impedance (RE): 6.32 ohm
  • Coil Inductance (Le): 1.10mH
  • Electromagnetic Q (Qes): 0.63
  • Mechanical Q (Qms): 8.10
  • Total Q (Qts): 0.58
  • Compliance Equivalent Volume (Vas): 334.6 liters, 11.82 cu.ft.
  • Peak Diaphragm Displacement Volume (Vd): 327cc
  • Mechanical Compliance of suspension (Cms): 0.35mm/N
  • BL Product (BL): 11.5 TM
  • Diaphragm Mass inc. Airload (Mms): 60 grams
  • Equiv. Resistance of mechanical suspension loss (Rms): 1.61N*sec/M
  • Efficiency Bandwidth Product (EBP): 55
  • Voice Coil Overhang (Xmax): 4.0mm
  • Surface Area of Cone (Sd): 832.7cm2
  • Impedance at Resonance (Zmax): 88 ohm

Helpful Info about the Manufacturer
Phone:  502-845-5622 Warranty:  Warranty: 7 years
Overall Rating
these. speakers. sound sweet. pumping 1500 wattsper channel
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Totally equal to black widow
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