Question about DHD NTX-6812 Car Subwoofer

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Dhd ntx-6812 I got this sub from a friend a few yrs back and let set since.Now I finally want to install but can't get the box recommendations anywhere online.Having botched this befor on other installs I wanted the best box size for it.Can you help?Also,should it be a ported box or closed?Should I mount magnet in box or out? much appriciated. kenny

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I have 2 of them in a sealed bassworx encloser abou 1.5 cubic feet each side and they hit hard as hell on a 2000 watt powercoustik

Posted on Nov 24, 2008

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HI Kenny,

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

Posted on Nov 25, 2007


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Posted on Jan 02, 2017

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on Apr 14, 2010 | Computers & Internet

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Red/white x over sound icon lower left/ installed new audio driver it worked earlier today then quit/ no audio device installed

the problem is your using a toshiba. I bought one several yrs ago and in just a few yrs things stopped working. first the sound wuit, then usb ports stopped working then when booting up the laptop it asked for a non existant password. finally i just tossed it out

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Our Jenn air fridge is a few yrs old. A few

ok stop the water // the water valve is bad..very bad . change it ..its a dual valve in the back . right where the lin is hooked up . this will correct problem .. **** hope this helps . i think it will .. / feed back pls ..

Jan 12, 2010 | Refrigerators

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Recomend installing a capacitor, this will control voltage drop and reduce heat. The new battery should help, but it also may be that the amps final circuts could be wearing out, and no longer able to handle the load of the sub.

Sep 28, 2009 | Jl Audio 1000/1 Car Audio Amplifier

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Specs for Ported Box for 2 12" MA AUDIO HK12X2 Subs

Hello joseph_delac,

MA Audio's website has the recommended box volume and port size online here. A ported enclosure needs 3.0 CuFt of internal volume and the port should be 48 sq/in and 14.5" in length. A 4X12" rectangular port would give you the recommended 48 sq/in. Using 3/4" MDF, a box 16X18X25 has an internal volume of 3.25 CuFt allowing .25 CuFt for the sub and port displacement.

Hope this helps.

May 13, 2009 | MA Audio HK12X2 Car Subwoofer

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A black screen with a blue box asking to ENTER CURRENT PASSWORD

It sounds like you might have a BIOS password on the computer. Taking it to a repair shop is the next step to get this looked at. Given the history of all of this stuff that happened, I would recommend one that knows what they are doing to help you out. There are a couple of shops here that I can recommend, but you may not be anywhere near here!

Mar 06, 2017 | Toshiba Satellite L300 175-Watt Power...

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Ive had 6 blown subs in the last 6 months

be careful with fosgate amps. They are more powerful then what is stated on them. I found this out when I blew a 15 with a punch 260ix. These amps are made for competion use. The 600.1 does not push 600 watts as stated. I had one tested and it actually pushes close to 800 watts. Turn ur bass level and ur gain to about 3/4 power and this should solve your problem

Feb 23, 2009 | Car Audio & Video

1 Answer

Amp stuck in protection mode, help!!

for 1 the amp is no where close to strong enough for the subs and 2 if the amp is mounted on the box it is vibrating the electronics loose. you always want the amps rms power to be be about 25% more than the speakers rms rating, from the sound of it you are either undriving the amp (clipping) or running the amp at 1 ohm load which is making it burn up. if the amp gets hot (which class d amps should never ever do) then try running just 1 sub. if the problem goes away then you know the amp is not enough for the subs. try a hifonics amp you will be amazed at the quality and power difference. I sell all major brands cheaper than almost anywhere. let me know the exact model of the subs and i can recommend a better amp for you.

Jan 06, 2009 | AudioBahn DUB Mag Audio DUB2502 Car Audio...

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Pioneer ts w33c

Recommended volume for these speakers is 1-2 cu ft each speaker. Best materials are marine grade plywood and epoxy resin/matting. decide what space you think you can spare and see if you can make a box that will be about the right size in the space. always try and leave as much space behind the speaker as the speaker takes up from the front. look at the link below for some ideas of the ready made boxes you can buy.,,2076_310069931,00.html the speakers you have will need at least 2 one inch ports each in the back of the box, or equivalent. completely sealed can have bad effects on these speakers at high volume. I personally recommend keeping both subs in a seperate box completely, but a good solid box with a divider will probably work - make sure that no holes of any size exist between the two as this will cause distortion with certain channel set ups and is best avoided although some good results have been achieved with back flow between sub sets - it is a bit too hit and miss to be worth trying. If you need ideas how to fit these into your car so they look good - check out if you haven't seen it, check out a few episodes and you will get some great ideas and construction tips. Hope this helps :)

Mar 08, 2007 | Pioneer TS-W33C Car Subwoofer

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