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HiVi D6.8B 6" Poly Bass/Midrange Shielded

HiVi
Part #297-444

HiVi D6.8B 6" Poly Bass/Midrange Shielded

HiVi
Part #297-444  
Model: D6.8B
Suitable for compact vented box systems, the HiVi D6.8 woofer delivers incredibly deep and dynamic bass. It also may be incorporated in a small closed box as a bass-midrange driver when a subwoofer is employed.
Key Features
  • 76 mm high power handling voice coil with Kapton former
  • Long-throw symmetrical drive motor structure
  • High density aluminum die-cast frame
  • Shielded vented magnet system with neodymium magnet
  • Specially made high loss rubber surround
  • Shallow mineral filled polypropylene cone
Your Price: $104.98
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MSRP: $136.99
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Overview

HiVi D6.8B 6" Poly Bass/Midrange Shielded

The HiVi D6.8B's design positions the voice coil over an undercut central pole piece with a large thermally stabilized Neodymium magnet at the bottom. 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 symmetric driving force that substantially decreases inductance and back electromotive force modulations. The magnet structure is optimized using Finite Element Analysis technique that provides a radical improvement of driver linearity. The cone's shallow, high integrity structure is extremely rigid and dynamically stable. The large voice coil diameter allows a more uniform cone movement, resulting in clear and accurate reproduction; a high temperature voice coil provides a dramatic increase in power handling. Suitable for compact vented box systems, the D6.8B delivers incredibly deep and dynamic bass. It also may be incorporated in a small closed box as a bass-midrange driver when a subwoofer is employed.

Product Details

BrandHiVi
ModelD6.8B
Part Number297-444
UPC844632021855
Unit of MeasureEach
Weight4.1

Product Specifications

Nominal Diameter6"
Bolt Circle Diameter6.22
Power Handling (RMS)60 Watts
Power Handling (MAX)120 Watts
Impedance8Ω
Frequency Response43 to 4,000Hz
Sensitivity85dB 2.83V/1m
Voice Coil Diameter3"

Thiele-Small Parameters

Resonant Frequency (Fs)43Hz
DC Resistance (Re)6.5Ω
Mechanical Q (Qms)5.21
Electromagnetic Q (Qes)0.49
Total Q (Qts)0.45
Compliance Equivalent Volume (Vas)0.48ft³
Mechanical Compliance of Suspension (Cms)0.647mm/N
BL Product (BL)8.7T·m
Diaphragm Mass Inc. Airload (Mms)21.17g
Maximum Linear Excursion (Xmax)5.3mm
Surface Area of Cone (Sd)121.2cm²

Materials of Construction

Cone MaterialPoly
Surround MaterialRubber
Voice Coil Wire MaterialCCA
Voice Coil FormerKapton® / Polyimide
Basket / Frame MaterialCast Aluminum
Magnet MaterialNeodymium

Mounting Information

Overall Outside Diameter6.83"
Baffle Cutout Diameter5.315"
Depth3.4"
# Mounting Holes6

Parts Express Staff Recommended Enclosure Volume

Sealed Volume0.23ft³
Sealed F375.8Hz
Vented Volume0.5ft³
Vented F341.1Hz

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