Dynavox LW8004PMR 8" Woofer

Dynavox LW8004PMR 8" Woofer

Brand:| Model: LW8004PMR
Overview
Dynavox is the best kept secret in high end loudspeaker drivers. They were engineered in France and their motor structures were optimized using Finite Element Analysis techniques. The mid-bass drivers feature die cast frame, butyl rubber surround, one piece polypropylene cone and huge 4" voice coil.
Highlights
  • Die-cast aluminum frame
  • Vented pole piece
  • Butyl rubber surround
  • Huge 4" voice coil
Part # 
295-610
Weight: 12 lbs.  
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Product Details

Dynavox LW8004PMR 8" Woofer

Dynavox is the best kept secret in high end loudspeaker drivers. They were engineered in France and their motor structures were optimized using Finite Element Analysis techniques. This mid-bass driver features a die cast frames, butyl rubber surround, one piece polypropylene cone, and a huge 4" voice coil. The unique motor structure uses magnets located inside the underhung voice coil. The result is a vast improvement in driver linearity and a reduction in harmonic distortions. This also features a vented spider and pole piece to reduce air compression and ensure maximum power handling.



Product Specifications
  • Nominal Diameter8"
  • Power Handling (RMS)100 Watts
  • Power Handling (max)200 Watts
  • Impedance8 ohms
  • Frequency Response45 to 5,000 Hz
  • Sensitivity88 dB 1W/1m
  • Voice Coil Diameter4"
Thiele-Small Parameters
  • Resonant Frequency (Fs)50.5 Hz
  • DC Resistance (Re)5.1 ohms
  • Voice Coil Inductance (Le)1.23 mH
  • Mechanical Q (Qms)3.12
  • Electromagnetic Q (Qes)0.71
  • Total Q (Qts)0.58
  • Compliance Equivalent Volume (Vas)0.81 ft.³
  • Mechanical Compliance of Suspension (Cms)0.29 mm/N
  • BL Product (BL)8.8 Tm
  • Diaphragm Mass Inc. Airload (Mms)34.2g
  • Maximum Linear Excursion (Xmax)3.4 mm
  • Surface Area of Cone (Sd)235.1 cm²
Materials of Construction
  • Cone MaterialPoly
  • Surround MaterialRubber
  • Basket / Frame MaterialCast Aluminum
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter9.29"
  • Baffle Cutout Diameter7.72"
  • Depth3.66"
  • # Mounting Holes6
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.87 ft.³
  • Sealed F365 Hz
  • Vented Volume2.2 ft.³
  • Vented F332 Hz
Dynavox LW8004PMR 8" Woofer
  • BrandDynavox
  • ModelLW8004PMR
  • Part Number295-610
  • UPC844632057588
  • Product CategoryWoofers
  • Unit of MeasureEA
  • Product Rating
    (2 Reviews)
  • Weight12 lbs.
  • California Prop 65

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

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Reviews

Dynavox LW8004PMR 8" Woofer
Dynavox LW8004PMR 8" Woofer is rated 4.0 out of 5 by 2.
Rated 4 out of 5 by from Great replacementHad Dyna Audio and surrounds went out. So far these seem to work quite well and was very pleased with the looks and construction.
Date published: 2008-12-30
Rated 4 out of 5 by from A superb WooferI use this driver in the EnABL reference system. The inherent low distortion allows the EnABL reduction of reflections and diffraction to provide outstanding performance with a first order crossover into a 3 inch dome midrange. Plus, you can disassemble the motor structure and mark the pieces for alignment and it goes back together without fuss. Thus allowing treatment of both sides of the cone surface, to eliminate resonances caused by energy storing reflections. Highly reccomended.
Date published: 2007-06-17

Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
Dynavox LW8004PMR 8" Woofer

How would these work for guitar?  I have a 2x8 cabinet and am not impressed with the speakers. It sounds like one of them is going up and I want something that can handle some power. I like bag end cabs for 12" but am trying for a more portable solution.

Asked by: Udertyrat
I would not recommend this for a guitar application. It handles a decent amount of power but lacks in sensitivity so you will not gain anything. I would recommend something like an Eminence Beta 8 for this, which handles a good amount of power, has a more extended frequency range and way better sensitivity.http://www.parts-express.com/eminence-beta-8cx-8-coaxial-driver--290-500
Answered by: MattP
Date published: 2014-03-31

Rebuilding Genesis I Speakers

I'm rebuilding a pair of Genesis I speakers and was looking at the DynaVox LW8004PMR speakers. Can you confirm if this would be a good choice for the sealed box size of 11x8x19 and the 1800Hz crossover? If not, what would be a better coice and why?
Asked by: MrBill2U
Yes this will work well in that enclosure volume and with that crossover point.
Answered by: MattP
Date published: 2013-03-26

Is this a 6 Ohm or 8 Ohm speaker? The website says 8, but the spec sheet says 6...

Is this a 6 Ohm or 8 Ohm speaker? The website says 8, but the spec sheet says 6...
Asked by: zinger084
I have verified that the DCR of this woofer is 5.2 ohms, which could be considered either a 6 or 8 ohm resistance. i will have our website updated to match the spec sheet.
Answered by: MattP
Date published: 2012-10-22

Is there a way this woofer can work in car application in either sealed or IB?

Asked by: dozyproductions
Yes. If you have a trunk, or the back area of an SUV, you should be able to handle a cabinet with an internal volume of 2.2 cubic feet for a ported enclosure... Tune the vent or an f3 of 32hz. You can use a box calculator, easily searchable online, to get the port diameter and length specs. Make sure you give this amp good clean power.
Answered by: MarkAJH
Date published: 2012-08-06

Magnet weight?

Is the magnet weight available? If not maybe a best guess or weight the whole speaker?Thanks!
Asked by: Nonsuchpro
This used to be a very valid question. But now we have neodymium and other rare earth magnets - so a smaller neo is much more powerful than older magnets. Also - weight isn't critical as the same magnet can be charged to a different gauss. In the case of this driver, it utilizes a very special structure of multiple magnets to create a unique field - similar to woofers costing up to $600. If you want to know more about this - you need to visit the mfgr's website. Hope this helps
Answered by: MarkAJH
Date published: 2012-12-15

Can you publish a frequency response graph or data sheet for this driver?

Asked by: drkorb
When we have graphs, specs, etc for a driver, we do publish them on our site. On this particular driver, we don't have the information and therefore, cannot provide it to you. My apologies.
Answered by: RussR
Date published: 2012-12-31

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