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Eminence Beta-12A-II 12" Driver

Eminence SpeakerPart # 290-408
Model: Beta-12A-II
The performance of the Eminence Beta-12A-II 12" speaker is optimized for sound reinforcement systems. The Beta-12A-II is also suitable for lead and bass guitar, keyboards, guitar combos club music systems and stage monitors.

Key Features

  • Kapton coil former
  • Polyamide-imide coated copper voice coil
  • Ferrite magnet
  • Vented and pole piece
  • Pressed steel basket
  • Paper cone
  • Cloth accordian surround
Your Price: $119.99
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MSRP: $144.99
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Overview

Eminence Beta-12A-II 12" Driver

The performance of the Eminence Beta-12A-II 12" speaker is optimized for sound reinforcement systems. The Beta-12A-II is also suitable for lead and bass guitar, keyboards, guitar combos club music systems and stage monitors. Made in the USA. 7-year manufacturer's warranty! Good Upgrade for Mackie Thump 12 woofer.

Product Details

BrandEminence Speaker
ModelBeta-12A-II
Part Number290-408
UPC876358000111
Unit of MeasureEach
Weight11

Product Specifications

Nominal Diameter12"
Power Handling (RMS)250 Watts
Power Handling (MAX)500 Watts
Impedance8Ω
Frequency Response43 to 3,800Hz
Sensitivity98dB 2.83V/1m
Voice Coil Diameter2"

Thiele-Small Parameters

Resonant Frequency (Fs)47Hz
DC Resistance (Re)5Ω
Voice Coil Inductance (Le)0.64mH
Mechanical Q (Qms)6
Electromagnetic Q (Qes)0.5
Total Q (Qts)0.46
Compliance Equivalent Volume (Vas)4.24ft³
Mechanical Compliance of Suspension (Cms)0.29mm/N
BL Product (BL)10.8T·m
Diaphragm Mass Inc. Airload (Mms)40g
Maximum Linear Excursion (Xmax)4.4mm
Surface Area of Cone (Sd)538.9cm²

Materials of Construction

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

Mounting Information

Overall Outside Diameter12.03"
Baffle Cutout Diameter10.95"
Depth4.57"
# Mounting Holes8

Parts Express Staff Recommended Enclosure Volume

Sealed Volume1.25ft³
Sealed F395Hz
Vented Volume3.2ft³
Vented F353Hz

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