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Eminence Lab 12C High Power 12" Subwoofer Speaker Driver 4 Ohm

Eminence Speaker
Part #290-668

Eminence Lab 12C High Power 12" Subwoofer Speaker Driver 4 Ohm

Eminence Speaker
Part #290-668  
Model: Lab 12C
Eminence's LAB 12C subwoofer driver builds upon the premise of the original LAB 12 subwoofer, lowering the impedance to 4 ohms and raising the power handling. It is recommended for vented, sealed, and horn-loaded professional audio enclosures. Also great as an automotive sub.
Key Features
  • Double stacked 80 oz. ferrite magnets for improved motor strength
  • Vented and extended pole piece for improved cooling
  • 12-spoke die-cast aluminum basket
  • Kevlar® reinforced paper cone with foam cone edge
  • Copper voice coil on Polyimide former
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Overview

Eminence Lab 12C High Power 12" Subwoofer Speaker Driver 4 Ohm

The LAB 12C, from Eminence, is a 4-ohm take on the original LAB 12 subwoofer (for more information on the LAB 12, visit the History of the LABhorn thread at ProSoundWeb). The 12C features the same long-throw construction with a heavy-duty 12-spoke die-cast aluminum frame and Kevlar® reinforced paper cone. A lower impedance voice coil is designed to handle 500W RMS, 1,000W program power, and extract even more power from your amplifier, while nickel-plated, spring-loaded speaker terminals offer quick connection. Proudly made in the U.S.A.

Eminence's LAB 12C is designed to perform optimally in a small, sealed 1 cubic foot enclosure, or a 1.25 cubic foot vented enclosure (using a 4" diameter port that is 14.75" long for a 38 Hz tuning frequency) for automotive use. When used in either application, it is recommended to use a steep 35 Hz high-pass filter.

For home theater use, Eminence recommends a 4.5 cubic foot ported enclosure using a 4" diameter port that is 14.5" long that tunes the cabinet to 28 Hz and yields an F3 of 29 Hz. When used in this manner, a steep 25 Hz high pass filter is recommended.

For even more enclosure recommendations, see the Related Items section.

Product Details

BrandEminence Speaker
ModelLab 12C
Part Number290-668
UPC876358002108
Unit of MeasureEach
Weight23.25

Product Specifications

Nominal Diameter12"
Power Handling (RMS)500 Watts
Power Handling (MAX)1000 Watts
Impedance4Ω
Frequency Response25 to 120Hz
Sensitivity88.9dB 2.83V/1m
Voice Coil Diameter2.5"

Thiele-Small Parameters

Resonant Frequency (Fs)23Hz
DC Resistance (Re)3.11Ω
Voice Coil Inductance (Le)1.09mH
Mechanical Q (Qms)11.7
Electromagnetic Q (Qes)0.34
Total Q (Qts)0.33
Compliance Equivalent Volume (Vas)4.53ft³
Mechanical Compliance of Suspension (Cms)0.36mm/N
BL Product (BL)13.36T·m
Diaphragm Mass Inc. Airload (Mms)136g
Maximum Linear Excursion (Xmax)13mm
Surface Area of Cone (Sd)506.7cm²

Materials of Construction

Cone MaterialPaper / Kevlar
Surround MaterialFoam
Voice Coil Wire MaterialCopper
Voice Coil FormerKapton® / Polyimide
Basket / Frame MaterialCast Aluminum
Magnet MaterialFerrite

Mounting Information

Overall Outside Diameter12.32"
Baffle Cutout Diameter10.98"
Depth6.44"

Parts Express Staff Recommended Enclosure Volume

Sealed Volume1ft³
Sealed F355.2Hz
Vented Volume2.25ft³
Vented F325.9Hz

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