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  #1  
Old 07-12-2013, 03:23 PM
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Default Digital Designs general discusion

This thread to discuss general Digital Designs products. DD is coming out with a lot of new equipment lately; 21" DDZ, super 8 (high excursion 8 with 2500 series motor), 9900 (4" coil with larger then 9500 series motor), and always making changes to current models. If its info about DD audio, its not off topic.

This thread is not for "haters" or people to come here complaining that they think DD is too expensive. I made this thread because overall I have been happy with the products and want to learn more.


The new 21" DDZ discussion thread...
Digital designs new 21 inch sub!

For those that still think DD's don't plays lows... 4 9518's on 10,800 watts tuned to 37 hz and still doing 155.3 at 27 hz. 160+ kick at 46 hz.
4 9518's on 2 M4a's 400 FPS....
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Old 07-12-2013, 03:32 PM
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I have a theory that I've yet to challenge about the myth of the no lows. The majority of people here and every other forum, has people saying to build all dd enclosures with massive ports. 18, 20 inches per cube. I've even seen more suggested. The bigger ports will play louder but usually not lower. Restricting the rear wave would bring more lows and less peak, meaning a smoother response to even higher frequencies. Dd suggests 16" per cube for a reason. With most DD's being way underrated on power handling, the average person not chasing numbers could do better lows with less port area to widen the bandwidth, and more power to raise the volume levels. Most will agree that nearly all of the DD subs could handle close to or more than double power if done correctly and cleanly.
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Old 07-12-2013, 03:56 PM
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Does any one have any pics of the new 4" coil or the new super 8"?
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Subs: 2 9515's super charged
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Amp: DD M4a w/Toolmaker duel inputs ,
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4 kinetik hc3800, 4 run's of 1/0
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Old 07-12-2013, 04:02 PM
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DD Nuthuggers thread
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it makes since that if u add an alternator it will add resistants make your MPG go down but i dont see how turning up your volume adds more resistants.
SENSE RESISTANCE

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Perhaps a mod could change it to "Massivespfail"?
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Old 07-12-2013, 04:02 PM
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I'm not a DD hater but I would not run their products. I do not agree with their business tactics (has nothing to do with pricing)
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Id say, that because I clip so much, my opinion no longer matters on this site.
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Old 07-12-2013, 04:02 PM
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Quote:
Originally Posted by BigBen View Post
I have a theory that I've yet to challenge about the myth of the no lows. The majority of people here and every other forum, has people saying to build all dd enclosures with massive ports. 18, 20 inches per cube. I've even seen more suggested. The bigger ports will play louder but usually not lower. Restricting the rear wave would bring more lows and less peak, meaning a smoother response to even higher frequencies. Dd suggests 16" per cube for a reason. With most DD's being way underrated on power handling, the average person not chasing numbers could do better lows with less port area to widen the bandwidth, and more power to raise the volume levels. Most will agree that nearly all of the DD subs could handle close to or more than double power if done correctly and cleanly.
For daily enclosures, what my local DD dealer does is build his DD enclosures about 25% bigger then manufacture specs and about 17" port per cu for 2500 series and lower. 17-17.5" for 3500 series and 18+ for 9500 series. He typically tunes 36-38 hz depending on vehicle and type of music customers listen to. And all of his setups that I've heard have been extremely efficient, impressively flat, play the really fast punchy notes and still played 30hz or even mid to high 20 hz with authority.

With the huge enclosures and lots of motor force there tends to be a lot of box rise. Might be a good idea to wire down to .5 ohms.
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Old 07-12-2013, 04:08 PM
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Quote:
Originally Posted by r1 banshee View Post
Does any one have any pics of the new 4" coil or the new super 8"?
They have some super 8 pics on DD's facebook.

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Originally Posted by bigdhenderson View Post
DD Nuthuggers thread
lol

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Originally Posted by HiloDB1 View Post
I'm not a DD hater but I would not run their products. I do not agree with their business tactics (has nothing to do with pricing)
That's perfectly ok. I think they do a good job supporting there local dealers and I respect that.
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Old 07-12-2013, 04:28 PM
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Here you go. First public appearance, Dub car show in Dallas.
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  #9  
Old 07-12-2013, 04:48 PM
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Quote:
Originally Posted by BigBen View Post
I have a theory that I've yet to challenge about the myth of the no lows. The majority of people here and every other forum, has people saying to build all dd enclosures with massive ports. 18, 20 inches per cube. I've even seen more suggested. The bigger ports will play louder but usually not lower. Restricting the rear wave would bring more lows and less peak, meaning a smoother response to even higher frequencies. Dd suggests 16" per cube for a reason. With most DD's being way underrated on power handling, the average person not chasing numbers could do better lows with less port area to widen the bandwidth, and more power to raise the volume levels. Most will agree that nearly all of the DD subs could handle close to or more than double power if done correctly and cleanly.
Go to The DD Box | DD Audio. I won't say anything bad about DD because they are a nice family ran bizz. But.....
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  #10  
Old 07-12-2013, 05:40 PM
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Quote:
Originally Posted by socalxj View Post
Go to The DD Box | DD Audio. I won't say anything bad about DD because they are a nice family ran bizz. But.....
Not quite sure what you're trying to point out here. I understand dd recommendations very well. They say to use 16" per cube. I agree that they will play lower with 16, but every designer here says to use 18-20. And then they complain about no lows. Coincidence?
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