Selenium 12W10P-Nd-SLF 12" Neodymium Woofer 350W

Brand:| Model: 12W10P-Nd-SLF
The Selenium 12W10P-Nd-SLF 12" woofer delivers all the durability, efficiency, and accuracy you would expect from a professional speaker, but without the penalty of a heavy, bulky chassis and motor.
  • Lightweight—just over 8 lbs.
  • 3" flatwound copper voice coil
  • Rugged integrated frame/heat sink
  • Smooth, low-distortion output
  • Great for portable use or permanent installations
Part # 
Weight: 9.7 lbs.  
List Price$219.80
You Save28%
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Part # 264-445
Qty:  EA
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Product Details

Selenium 12W10P-Nd-SLF 12" Neodymium Woofer 350W

Selenium's 12W10P-Nd-SLF 12" woofer was designed specifically for applications where low weight is an important factor, like portable speakers or suspended systems. An integrated cast aluminum heat sink and basket confers maximum thermal efficiency to the motor system and contributes to high power handling capacity, and the voice coil is made of high temperature copper wire, wound on a polyimide former for resistance to heat and stress.

The light yet stiff cone is manufactured with long fiber pulp, which combined with a surround of impregnated fabric gives the assembly great stability, high yield, and low distortion. An epoxy painted reinforced aluminum injected frame provides the array with high mechanical resistance, and the magnet assembly was designed with the assistance of Finite Element Analysis (FEA) software in order to ensure optimization. A lightweight and efficient neodymium magnet minimizes field interference and allows the woofer to be used next to sensitive equipment.

Product Specifications
  • Nominal Diameter12"
  • Power Handling (RMS)350 Watts
  • Power Handling (max)700 Watts
  • Impedance8 ohms
  • Frequency Response50 to 4,000 Hz
  • Sensitivity96 dB 2.83V/1m
  • Voice Coil Diameter3"
  • Magnet Weight12.34 oz.
Thiele-Small Parameters
  • Resonant Frequency (Fs)62.5 Hz
  • DC Resistance (Re)6.2 ohms
  • Voice Coil Inductance (Le)1.28 mH
  • Mechanical Q (Qms)14.41
  • Electromagnetic Q (Qes)0.48
  • Total Q (Qts)0.47
  • Compliance Equivalent Volume (Vas)1.35 ft.³
  • Mechanical Compliance of Suspension (Cms)0.1 mm/N
  • BL Product (BL)17.8 Tm
  • Diaphragm Mass Inc. Airload (Mms)62.4g
  • Maximum Linear Excursion (Xmax)3.75 mm
  • Surface Area of Cone (Sd)512 cm²
Materials of Construction
  • Cone MaterialPaper
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerKapton® / Polyimide
  • Basket / Frame MaterialCast Aluminum
  • Magnet MaterialNeodymium
Mounting Information
  • Overall Outside Diameter12.25"
  • Baffle Cutout Diameter11.06"
  • Depth5.75"
  • # Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.66 ft.³
  • Sealed F3107 Hz
  • Vented Volume1.77 ft.³
  • Vented F353 Hz
Selenium 12W10P-Nd-SLF 12" Neodymium Woofer 350W
  • BrandSelenium
  • Model12W10P-Nd-SLF
  • Part Number264-445
  • UPC7896359512386
  • Product CategoryWoofers, Subwoofers & Midrange Speakers
  • Unit of MeasureEA
  • Weight9.7 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Selenium 12W10P-Nd-SLF 12" Neodymium Woofer 350W

Product Q&A

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Selenium 12W10P-Nd-SLF 12" Neodymium Woofer 350W

If I wanted to could I power this speaker to a 300w amplifier?

Asked by: Bradman
Answered by: MattP
Date published: 2014-12-04

Has anyone run enclosure calculations on this?

Curious how low you can tune this driver in a ported box while still maintaining good power handling. Also curious on the sealed specs. If you have the time and the software...
Asked by: Dj Sidetrack
This woofer is best utilized in a small vented enclosure. The Vented box size is 2 cubic feet with a 4" diameter, 3.5" long port, this will tune the box to about 50 Hz. In order to handle full power and not exceed Xmax, there will have to be a high pass filter on the woofer around 100 Hz. A sealed design is about 0.9 cubic feet and the same high pass filter is recommended.
Answered by: MattP
Date published: 2013-07-21
  • 2015-05-03T09:12CST
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