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Eminence Alpha-12A 12" Guitar/PA Driver

Eminence SpeakerPart # 290-405
Model: Alpha-12A
The Eminence Alpha-12A 12" Guitar/PA speaker is an ideal replacement driver for two-way sound reinforcement systems, keyboard, guitar combos. Ideal replacement for the Mackie Thump 12

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-12A 12" Guitar/PA Driver

The Eminence Alpha-12A 12" Guitar/PA speaker is an ideal replacement driver for two-way sound reinforcement systems, keyboard, guitar combos. Made in the USA. 7-year manufacturer's warranty!

Product Details

BrandEminence Speaker
ModelAlpha-12A
Part Number290-405
UPC876358000043
Unit of MeasureEach
Weight7.3

Product Specifications

Nominal Diameter12"
Power Handling (RMS)150 Watts
Power Handling (MAX)300 Watts
Impedance8Ω
Frequency Response51 to 4,300Hz
Sensitivity95.6dB 2.83V/1m
Voice Coil Diameter1.5"

Thiele-Small Parameters

Resonant Frequency (Fs)49Hz
DC Resistance (Re)6.3Ω
Voice Coil Inductance (Le)0.79mH
Mechanical Q (Qms)6.53
Electromagnetic Q (Qes)0.88
Total Q (Qts)0.77
Compliance Equivalent Volume (Vas)4.29ft³
Mechanical Compliance of Suspension (Cms)0.32mm/N
BL Product (BL)8.5T·m
Diaphragm Mass Inc. Airload (Mms)33g
Maximum Linear Excursion (Xmax)2.4mm
Surface Area of Cone (Sd)519.5cm²

Materials of Construction

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

Mounting Information

Overall Outside Diameter12.26"
Baffle Cutout Diameter11"
Depth4.73"
# Mounting Holes8

Parts Express Staff Recommended Enclosure Volume

Sealed Volume1.25ft³
Sealed F378Hz
Vented Volume2.5ft³
Vented F350Hz

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California Prop 65

WARNING: Cancer and Reproductive Harm

www.P65Warnings.ca.gov