Question about DHD NTX-6612 Car Subwoofer

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RE: ntx-6612 I own a pair of ntx-6612. I'm making a box for them and I don't know how much air space is required. Can anyone please help me? Thanks and I appreciate your time. Jen

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Hi, if they are 12s then give them 12 iches in depth and 14 inches on with,same with the hight

Posted on Feb 21, 2008

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I purchased my subs in a bandpass box. The whole thing was preassembled. It was about 5 years ago that I bought my system. I had it in my vehicle for about a year, then had it in storage for the...


Hi there,

Chances are these are 12" in size (measure the diameter of the speaker - from one side to the next).

Usually, if subs come with a bandpass box, the box would have been measured for the correct air space.

However, if you want to know how to design your own enclosure then I will direct you to this web page, which can give you some basic understanding:

http://www.bcae1.com/spboxnew2.htm

Hope this helps...



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Aug 28, 2011 | Phoenix Gold Octane-R 12/12d Car Subwoofer

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Does anyone know the actual airspace requirements for sealed and ported enclosures on these speakers? Please no idiots building cube boxes need to respond!


For optimal performance there is really only one size for the box .Firstly, you get two different types of subwoofers, an open air, or closed air sub. If it is an open air sub ( hole with mesh in the center of the magnet) no ports are required, and the box should be sealed on the inside with silicone sealant. If it is a closed air sub ( no hole in the magnet) you need a 50mm port about 120mm long. Box size will be 11 inches x 11 inches x 11 inches. Hope this helps

Feb 17, 2011 | Autotek MX-1222 Car Subwoofer

1 Answer

Manual for 12" 1000w Valfenhag Subwoofer


Unfortunately there are no manuals for subwoofers as far as I know. For optimal performance there is really only one size for the box .Firstly, you get two different types of subwoofers, an open air, or closed air sub. If it is an open air sub ( hole with mesh in the center of the magnet) no ports are required, and the box should be sealed on the inside with silicone sealant. If it is a closed air sub ( no hole in the magnet) you need a 50mm port about 120mm long. Box size will be 13 inches x 13 inches x 13 inches

Jun 11, 2010 | Volfenhag ZX-4712 Car Subwoofer

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2 NTX-6812's. need box and amp.


if your subs are dvc 1000w max and 500rms wiring up to a 1 ohm load you would need a 1000w max 1 ohm stable amp. to put this in a pickup truck, i would not put them in a box, i would get 2 12inch tubes to put them in. cause a wedge truck box would make your system sound like garbage and will be distorted, your sql will be poor, basically you would need the right amount of air space for the subs.

Feb 10, 2010 | DHD NTX-6812 Car Subwoofer

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Need to know the air space that is required for the performance series 12 subs that are from crossfire auido the series is the 1228 series ? need help


Sealed = 1 cu ft.
Ported = 2 cu ft.

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Dec 29, 2009 | Car Speakers & Subwoofers

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I have a ntx-6810 wanted to know how many cubic feet i need to build a box. thanks for the help


For this sub the enclosure is pretty basic.

Sealed box- 2 ft cubed with a shared chamber would be fine. Can go smaller is you need the extra space. THe minimum requirment is .7 per sub.

Ported box- 3 ft cubed, with the port tuned to about 45 hz will work.. 45 hz isn't very low bass, but is at the very bottomn end of the frequency response for this driver.Also, if you are gonna run a ported enclosure, be ware of power handeling issus, and be careful not to over drive the woofer..800 watts rms for the pair on the high side.

Aug 08, 2009 | DHD NTX-6812 Car Subwoofer

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Audiobahn 15s smell and stoped working


google "subwoofer wiring diagram" that will help you out,....you put in how many subs, DVC, SVC, and the ohms of the subs.....good stuff to know b4 hooking up a system....hopefully you didnt fry your subs or amp.....let me kno.....

Mar 14, 2009 | DHD NTX-6612 Car Subwoofer

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My twin jbl 12'' sub in a enclosure dont seem to be giving bass


Those 12's Need to be in a Ported Inclosure to release the Air that the Bass Produces. Use a 1 Inch Key Hole Bit and make 1 Hole at the Top Corner of Each Portion of the Box. Top Left and Top Right. Please Rate My Response! Thanks!

Feb 02, 2009 | JBL GT412 Car Subwoofer

2 Answers

Dhd ntx-6812


HI Kenny,

If you want to know the procedure for building a great Sub box. go to this aritcle.

http://www.termpro.com/articles/buildbox.html

Aug 30, 2007 | DHD NTX-6812 Car Subwoofer

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DHD ntx6408 subs


Voice coil has been blown open. Most likely alot of times what I do to test a speaker is connect it to a 9 volt battery. on and off and the speaker should bounce. If not speaker is blown. Plus this way you could save yourself lots of problems. If the speaker was shorted and not blown open. You would now possible have a blown amp and home stereo.

Jan 06, 2007 | DHD NTX-6612 Car Subwoofer

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