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Eminence Alpha-15A 15" Driver

Eminence Speaker
Part #290-407

Eminence Alpha-15A 15" Driver

Eminence Speaker
Part #290-407  
Model: Alpha-15A
The Eminence Alpha-15A 15" speaker is ideal for two-way sound reinforcement systems, keyboard, and guitar combos. For all bass applications.
Key Features
  • Kapton coil former
  • Polyamide-imide coated copper voice coil
  • Ferrite magnet
  • Vented and extended pole piece
  • Pressed steel basket
  • Paper cone
  • Cloth accordian surround
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Overview

Eminence Alpha-15A 15" Driver

The Eminence Alpha-15A 15" speaker is ideal for two-way sound reinforcement systems, keyboard, and guitar combos. For all bass applications. Made in the USA. 7-year manufacturer's warranty!

Product Details

BrandEminence Speaker
ModelAlpha-15A
Part Number290-407
UPC876358000050
Unit of MeasureEach
Weight8.65

Product Specifications

Nominal Diameter15"
Power Handling (RMS)220 Watts
Power Handling (MAX)400 Watts
Impedance8Ω
Frequency Response46 to 3,500Hz
Sensitivity97dB 2.83V/1m
Voice Coil Diameter1.5"

Thiele-Small Parameters

Resonant Frequency (Fs)41Hz
DC Resistance (Re)5.88Ω
Voice Coil Inductance (Le)0.84mH
Mechanical Q (Qms)7.23
Electromagnetic Q (Qes)1.53
Total Q (Qts)1.26
Compliance Equivalent Volume (Vas)9.18ft³
Mechanical Compliance of Suspension (Cms)0.25mm/N
BL Product (BL)7.7T·m
Diaphragm Mass Inc. Airload (Mms)59g
Maximum Linear Excursion (Xmax)3.8mm
Surface Area of Cone (Sd)856.3cm²

Materials of Construction

Cone MaterialPaper
Surround MaterialCloth
Voice Coil Wire MaterialCopper
Voice Coil FormerKapton® / Polyimide
Basket / Frame MaterialSteel
Magnet MaterialFerrite

Mounting Information

Overall Outside Diameter15.15"
Baffle Cutout Diameter13.77"
Depth5.83"
# Mounting Holes8

Parts Express Staff Recommended Enclosure Volume

Sealed Volume2.7ft³
Sealed F359Hz
Vented Volume4.2ft³
Vented F351Hz

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