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Usher 8948A 7" Carbon Fiber/Paper Woofer

Brand:|Model: 8948A|Part # 296-603


The 8948A woofer is one of Usher's most popular drivers, featuring their low distortion motor system and a carbon fiber/paper cone which dampens resonances usually associated with stiff cones.
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List Price$174.99
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Part # 296-603
Highlights
  • Ulta stiff carbon fiber/paper cone
  • Low distortion motor system
  • Heavy magnet system reduces distortion and moduations




Product Details

Usher 8948A 7" Carbon Fiber/Paper Woofer

The 8948A woofer is one of Usher's most popular drivers, featuring their low distortion motor system and a carbon fiber/paper cone which dampens resonances usually associated with stiff cones. Heavy magnet system eliminates modulations as well as lowering clipping distortion. Rubber surround along with a progressive spider to prevent over excursion. This midbass sets the standard for sound reproduction.



Product Specifications
  • Nominal Diameter7"
  • Power Handling (RMS)70 Watts
  • Power Handling (max)100 Watts
  • Impedance8 ohms
  • Frequency Response31 to 7,500 Hz
  • Sensitivity88 dB 2.83V/1m
  • Voice Coil Diameter1.65"
Thiele-Small Parameters
  • Resonant Frequency (Fs)31 Hz
  • DC Resistance (Re)5.6 ohms
  • Voice Coil Inductance (Le)0.34 mH
  • Mechanical Q (Qms)1.94
  • Electromagnetic Q (Qes)0.31
  • Total Q (Qts)0.27
  • Compliance Equivalent Volume (Vas)1.54 ft.³
  • BL Product (BL)8.16 Tm
  • Diaphragm Mass Inc. Airload (Mms)19.35g
  • Moving Mass Of Diaphragm (Mmd)18.29
  • Maximum Linear Excursion (Xmax)6 mm
  • Surface Area of Cone (Sd)150 cm²
Materials of Construction
  • Cone MaterialPaper / Carbon Fiber
  • Surround MaterialRubber
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter7"
  • Baffle Cutout Diameter6.125"
  • Depth3.30"
  • Bolt Circle Diameter6.625"
  • # Mounting Holes6
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.20 ft.³
  • Sealed F391 Hz
  • Vented Volume0.39 ft.³
  • Vented F358 Hz
Usher 8948A 7" Carbon Fiber/Paper Woofer
  • BrandUsher
  • Model8948A
  • Part Number296-603
  • UPC844632057434
  • Product CategoryWoofers
  • Unit of MeasureEA
  • Product Rating
    (10 Reviews)
  • Weight5.6 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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Usher 8948A 7" Carbon Fiber/Paper Woofer

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Usher 8948A 7" Carbon Fiber/Paper Woofer

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