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Goldwood GW-406D 6-1/2" Poly DVC Subwoofer Shielded
Q on Ohm/oice coils Goodwood vs Tang
I am replacing 2 6.5 inch speakers in an old dbx soundfield 3x2 lower end unit. Each of the current speakers is about 6.5 ohms and 8 when connected in. Do I need 8 ohm speakers or is there a way to wire these as 8 ohm speakers per channel. I already ordered- may need to hold till I hear. Vs tang 8 ohm units. Going to use this as a subwoofer lite with monitor audio column 270 speakers.
From what you're describing, you would simply wire the voice coils on this speaker in series to achieve an 8 ohm load. If you look below, there is a customer review describing one experience with a DBX unit, using this speaker as a replacement.
Date published: 2011-07-29
how would this best be used ?
i am thinking about getting one of these and i am wondering in witch way to use it. NUMBER 1. should i have it down-facing OR. NUMBER2. just have facing on a side of a box. i would like to know what is loudest. Thanks :)
Loudest? If you want punchy rock like bass then aim them at you. If you want deep lower rap style bass them get the sound to bounce off of something like a wall or the corner of a room or... the floor.
Date published: 2013-11-04
Size of sealed enclosure
What would be the optimal sealed enclosure size for this driver?
.65 to .75 cuft
Date published: 2013-04-18
Could two of these be mounted in a sealed PVC pipe in a Isobarik loading. What would the length of a 7" pipe be. How do you think it would sound?
it would work but the results of more drive on the x max of the cones would not add much sound,, put your money on a subwoofer or a better amp to drive a single 6.5 in the proper chamber for best overall sound,, pvc is resonant... listen to the "blue man group" video and you will understand!
Date published: 2012-04-24
Ported enclosure sizing question
I am designing a stereo boombox and would like to include the option to run it as a 2.1 when I'm in the house. I would like both enclosures to be the same size for aesthetic purposes. That would mean the internal dimensions of the sub enclosure are: 16" x 7" x 5.5" yielding .356ft^3 volume. Some of that will be taken up by the plate amp, so let's assume the volume is around .325ft^3. I don't have the software or knowledge to calculate port dimensions, so I was wondering if someone could help me do that. It would be great if we could get the f3 in the low 30s but I understand that the task may be impossible given the price of this sub and my small enclosure. Thanks for the help. Hopefully I'll get a response and I can post this "2.1 boombox" to the techtalk forums.
That volume is quite a bit smaller than what is recommended so the tuning will have to be a bit higher. I would recommend a 1.5" diameter, 4" long port which will tune the enclosure to about 50 Hz. You could also leave it sealed and get a much smoother overall response.
Date published: 2013-07-12
If I was going to use one of these with a pair of Tang Band W31723SAs in a portable boom-box type project, should I use a filter on each and what would a good sized ported enclosure be for this sub.
Filter: I refer you to a speaker cross-over chart [Google]. You will see the relationship between frequency & speaker impedance. Pick an inductor from the chart. Keep it simple; using cross-overs is considered "old school" anyway, so you dont really need caps too, just a coil for low-pass.Box size: figure at least 1 cu ft; whatever baffle-size accomodates the speaker set comfortably, then make the box 6-10" deep. Port for lower, powerful bass response. I use PVC tubing curt to length [11/2"dia x 4-5" long].
Date published: 2012-04-13