HiVi D8.8 8" Poly Bass/Midrange Shielded

HiVi D8.8 8" Poly Bass/Midrange Shielded

Brand:| Model: D8.8
Overview
The HiVi D8.8 is an excellent 8" woofer for high power "no compromise" audiophile speaker systems. It may also be used as a subwoofer in various configurations.
Highlights
  • Shallow mineral-filled polypropylene cone
  • Fatigue resistant foam surround
  • Shielded vented magnet system with a huge neodymium magnet
  • Long-throw symmetrically driven motor structure
  • Extreme power handling voice coil with a 100 mm black anodized aluminum former
  • High density aluminum die-cast frame
  • Progressive spider with decompressed rear volume
Part # 
297-449
Weight: 7.75 lbs.  
IN STOCK
List Price$303.99
You Save34%
Your Price
$199.60
Buy 4-23 $177.98
Buy 24-up$163.93
Part # 297-449
Qty:  EA
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Product Details

HiVi D8.8 8" Poly Bass/Midrange Shielded

The HiVi D8.8 woofer's voice coil is positioned over an undercut pole piece with a large thermally stabilized neodymium magnet at the bottom and a high energy ceramic magnet on the top. A specially shaped, CNC-machined steel cup completes the magnetic structure from the outside, creating a shielded magnet system with symmetrical flux density distribution along the gap. The long-throw voice coil experiences a symmetrical driving force that substantially decreases inductance and back electromotive force (EMF) modulations. The magnet structure is optimized using Finite Element Analysis techniques, and the result is a radical improvement of driver linearity. The mineral-filled polypropylene cone has a shallow, high integrity structure, which is extremely rigid and dynamically stable. The vented design and a high temperature rated voice coil provide a dramatic increase in power handling. The HiVi D8.8 is an excellent woofer for high power "no compromise" audiophile systems. It may also be used as a subwoofer in various configurations.



Product Specifications
  • Nominal Diameter8"
  • Power Handling (RMS)150 Watts
  • Power Handling (max)300 Watts
  • Impedance8 ohms
  • Frequency Response159 to 8,500 Hz
  • Sensitivity86 dB 2.83V/1m
  • Voice Coil Diameter0.5625"
Thiele-Small Parameters
  • Resonant Frequency (Fs)32 Hz
  • DC Resistance (Re)6.5 ohms
  • Mechanical Q (Qms)4.36
  • Electromagnetic Q (Qes)0.44
  • Total Q (Qts)0.4
  • Compliance Equivalent Volume (Vas)1.33 ft.³
  • Mechanical Compliance of Suspension (Cms)0.46 mm/N
  • Diaphragm Mass Inc. Airload (Mms)53.1g
  • Maximum Linear Excursion (Xmax)8.3 mm
  • Surface Area of Cone (Sd)241 cm²
Materials of Construction
  • Cone MaterialPoly
  • Surround MaterialFoam
  • Voice Coil FormerAluminum
  • Basket / Frame MaterialCast Aluminum
  • Magnet MaterialNeodymium
Mounting Information
  • Overall Outside Diameter9.53"
  • Baffle Cutout Diameter7.94"
  • Depth4"
  • # Mounting Holes12
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.38 ft.³
  • Sealed F367 Hz
  • Vented Volume1.07 ft.³
  • Vented F338 Hz
HiVi D8.8 8" Poly Bass/Midrange Shielded
  • BrandHiVi
  • ModelD8.8
  • Part Number297-449
  • UPC844632021862
  • Product CategoryWoofers
  • Unit of MeasureEA
  • Product Rating
    (2 Reviews)
  • Weight7.75 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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Reviews

HiVi D8.8 8" Poly Bass/Midrange Shielded
HiVi D8.8 8" Poly Bass/Midrange Shielded is rated 4.5 out of 5 by 2.
Rated 4 out of 5 by from Great speaker but.....The quality of the product is great for the price. The only issue is that the outside diameter is bigger than 8 inches so I had to modifiy my ESS PS8 boxes so they would fit. But the sound is better than when new.
Date published: 2008-04-21
Rated 5 out of 5 by from Most useful 8 for 2 way studio monitorsFolks, this driver is the most natural sounding 8 I have been able to get my hands on and the value means I can use these in designs working engineers can afford and still make money. It has a completely natural tone quality and can be run to 2.1Khz if crossed over 24 db. The low Fs and q parameters make it excellent for use with a 10 inch passive radiator in a 1 cu. foot box.
Date published: 2007-09-15

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HiVi D8.8 8" Poly Bass/Midrange Shielded

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