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4" Shielded One Piece Poly Coated Paper Woofer 4 ohm

Brand:|Part # 299-978

Repair or build your own bookshelf, satellite, center channel or computer speakers using this 4" shielded, poly-coated, one-piece paper cone woofer and save over 60% off the original retail price. Quantities are extremely limited on this Parts Express exclusive buyout!
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Part # 299-978
  • One-piece, poly-coated-paper cone
  • Designed for small sealed enclosures
  • Shielded design protects sensitive electronics

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Product Details

4" Shielded One Piece Poly Coated Paper Woofer 4 ohm

This shielded 4" poly-coated, one-piece paper cone woofer with foam surround was designed for use in home theater speakers, and is great for use in small sealed enclosures as bookshelf, center channel, and satellite speakers. The shielded motor also makes this woofer a great candidate for computer speakers that are placed closely to sensitive electronics. 

The 4 ohm impedance extracts more current from amplifiers for an increase of 3 dB in output over an 8 ohm variant. Wire two in series for a safe 8 ohm load when used in MTM configurations. Alternatively, you can repurpose this woofer as a midrange/midbass speaker in larger 3-way cabinets or even as a car audio speaker. Save over 60% off the original retail price through this Parts Express exclusive buyout. Quantities are extremely limited, act fast!

Product Specifications
  • Nominal Diameter4"
  • Power Handling (RMS)30 Watts
  • Power Handling (max)60 Watts
  • Impedance4 ohms
  • Frequency Response70 to 5,000 Hz
  • Sensitivity84 dB 1W/1m
  • Voice Coil Diameter1"
Thiele-Small Parameters
  • Resonant Frequency (Fs)64 Hz
  • DC Resistance (Re)3.23 ohms
  • Voice Coil Inductance (Le)0.47 mH
  • Mechanical Q (Qms)4.25
  • Electromagnetic Q (Qes)0.71
  • Total Q (Qts)0.61
  • Compliance Equivalent Volume (Vas)0.17 ft.³
  • Maximum Linear Excursion (Xmax)2.5 mm
Materials of Construction
  • Cone MaterialPoly Composite
  • Surround MaterialFoam
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerAluminum
  • Basket / Frame MaterialSteel
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter5"
  • Baffle Cutout Diameter4"
  • Depth2.5"
  • Bolt Circle Diameter4.625"
  • # Mounting Holes4
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.22 ft.³
  • Sealed F384 Hz
  • Vented Volume0.4 ft.³
  • Vented F342 Hz
4" Shielded One Piece Poly Coated Paper Woofer 4 ohm
  • BrandFactory Buyouts
  • Part Number299-978
  • UPC848864006475
  • Product CategoryProducts
  • Unit of MeasureEA
  • Product Rating
    (1 Reviews)
  • Weight1.8 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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4" Shielded One Piece Poly Coated Paper Woofer 4 ohm
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