Goldwood GW-408D 8" Poly DVC Woofer

Goldwood GW-408D 8" Poly DVC Woofer

Brand:| Model: GW-408D
This woofer provides added versatility over single voice coil woofers by allowing the use of both channels of a stereo amplifier to driver one speaker, and the ability to wire the voice coils in varying configurations.
Part # 
Weight: 3.6 lbs.  
Your Price
Buy 4-up$20.80
Part # 290-357
Qty:  EA
Available Payment Methods

Product Details

Goldwood GW-408D 8" Poly DVC Woofer

This woofer provides added versatility over single voice coil woofers by allowing the use of both channels of a stereo amplifier to driver one speaker, and the ability to wire the voice coils in varying configurations. They feature polymer laminated paper cones, treated foam surrounds, and vented pole pieces with back plates. This driver features a fully shielded motor. Note: All parameters are with voice coils connected in parallel.

Product Specifications
  • Nominal Diameter8"
  • Power Handling (RMS)100 Watts
  • Power Handling (max)220 Watts
  • Impedance8+8 ohms
  • Frequency Response44 to 5,000 Hz
  • Sensitivity91 dB 2.83V/1m
  • Voice Coil Diameter1.5"
  • Magnet Weight20 oz.
Thiele-Small Parameters
  • Resonant Frequency (Fs)51.2 Hz
  • DC Resistance (Re)3.7 ohms
  • Voice Coil Inductance (Le)0.5 mH
  • Mechanical Q (Qms)4.46
  • Electromagnetic Q (Qes)0.75
  • Total Q (Qts)0.64
  • Compliance Equivalent Volume (Vas)0.73 ft.³
  • Mechanical Compliance of Suspension (Cms)0.35 mm/N
  • BL Product (BL)6.63 Tm
  • Diaphragm Mass Inc. Airload (Mms)27.7g
  • Maximum Linear Excursion (Xmax)3.5 mm
  • Surface Area of Cone (Sd)205.9 cm²
Materials of Construction
  • Cone MaterialCoated Paper
  • Surround MaterialFoam
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter8"
  • Baffle Cutout Diameter7.125"
  • Depth3.625"
  • # Mounting Holes4
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.87 ft.³
  • Sealed F368 Hz
  • Vented Volume1.83 ft.³
  • Vented F334 Hz
Goldwood GW-408D 8" Poly DVC Woofer
  • BrandGoldwood
  • ModelGW-408D
  • Part Number290-357
  • UPC643420100600
  • Product CategorySubwoofer Drivers
  • Unit of MeasureEA
  • Product Rating
    (24 Reviews)
  • Weight3.6 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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Goldwood GW-408D 8" Poly DVC Woofer
Goldwood GW-408D 8" Poly DVC Woofer is rated 3.9583 out of 5 by 24.
Rated 4 out of 5 by from very convenienta couple 4 ohm 20w resistors in series to the stock rear speakers of a 2005 Impala, then each voicecoil parallel (back to 4 ohms) mounted center on a board adapter is giving great bass without a secondary amplifier. hearing it you'd sure think there is another amp involved (stock radio was replaced with a Pioneer head unit does give more power).this DVC 8 is efficient and convenient for an install like this, great solution for lots of bass without big cost or hassle..PS- yes there are a couple inductor coils and capacitors to cut freq's above 250hz, pretty simple to whip those together.
Date published: 2014-10-23
Rated 2 out of 5 by from Not a sub-wooferRoll off starts -3dB @ 120Hz, don't believe the graph. The quick disconnects are reverse from the normal mounting direction. Only useful as a mid-bass speaker
Date published: 2013-11-03
Rated 4 out of 5 by from Good for the $$$The sound quality is surprisingly good for such a low cost woofer. My only complaint is that the screw holes were bent in on one of them requiring some bending and prying before it could be installed. As a few others have said, the skew holes also didn't exactly align, but with a little creativity you can get past this too.
Date published: 2012-06-01
Rated 5 out of 5 by from exceptional product / great bargon.I have had towers from the 70's. and the 8in woofers fit right in no modifying needed. the Pioneer receiver I have is a 7.1 and I can set each tower to its own Hz. and they have excellent tone. in all no complaints.
Date published: 2012-02-25
Rated 3 out of 5 by from Slight Sizing IssueNOT QUITE A DROP IN REPLACEMENT! The outside frame is almost 8”. Speaker is a bit undersized & did not match up with original “mounting holes” - My original 8 screw holes ended up "pinching" the outside frame enough to hold it in place. Still a good speaker, but beware there may be mounting issues.
Date published: 2011-08-02
Rated 4 out of 5 by from Not bad for the priceOverall sound is good, a good replacement for OEM drivers. One of the braided leads from the terminal to the voicecoil came loose at the terminal, had to re-solder and it worked fine. Using these with a Crown 402XLS amp.
Date published: 2011-02-09

Product Q&A

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Goldwood GW-408D 8" Poly DVC Woofer

Has anyone tried to use this as a 16 Ohm speaker by running the voice coils in series?

I have a subwoofer in my Lexus SC430 that is 16 Ohms......I am hoping to use this speaker with the 2 voice coils run in series to present a 16 Ohm load to the amp. Unless anyone knows where I can find an 8" subwoofer that is 16 Ohms....
Asked by: JayVee
You will be hard pressed to find a 16 ohm subwoofer without going to the dealer for it. This will work well for that application with the coils in series.
Answered by: MattP
Date published: 2013-03-08

What's the optimal size for a sealed enclosure?

I want to build a sealed enclosure for this speaker? What would be the optimal size for this speaker? I've been online trying to find some calculators that would give a recommended size but i've gotten results from .60 cubuc feet to 3.5 cubic feet. I'm thinking the smaller is correct but i'm just not sure. Thanks.
Asked by: Chia219
The recommended sealed box volume for this woofer is 1.24 cubic feet or 13"x13"x13" measured internally. This provides an F3 of 63 Hz.
Answered by: MattP
Date published: 2011-03-25

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