Sundown SD-3 Line : In the Works - Page 17 - Car Audio | DiyMobileAudio.com | Car Stereo Forum

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Old 09-30-2016   #401
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Default Re: Sundown SD-3 Line : In the Works

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Originally Posted by Coppertone View Post
Lol now what makes you say I should have gotten an Android Ian ?
No reason! haha.... although in all honesty I do wonder what makes so many people pick an iPad mini over an equivalent Android tablet.

Bearing in mind I know little about the iPad mini, but my understanding of Apple is that you need to jailbreak them to get full functionality out of them. I have seen plenty of installs, but not one has a simple to use GUI / front end for driving. Getting steering wheel controls to work with them, at the last time I looked, appeared to involve multiple components etc. Additionally many times I see people using an iPad they have a head unit as well stashed away somewhere.

Just seems odd to me that so many people are picking them, maybe there is a reason that I just don't know about.... why did you pick an iPad mini for example?

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Old 09-30-2016   #402
 
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Default Re: Sundown SD-3 Line : In the Works

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Ok just ordered an IPad Mini 4 with 64GB, now I need to find the kit needed to install this into a 2011 Ram 1500.
NICE!

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Old 09-30-2016   #403
 
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Default Re: Sundown SD-3 Line : In the Works

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Originally Posted by OldNewb View Post
How did you do the speaker wire?
It is just 10AWG speaker wire split in two with 1/8" techflex covering it and cheap banana plugs on the end with a little shrink wrap. Really easy to make.

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Old 09-30-2016   #404
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Default Re: Sundown SD-3 Line : In the Works

^^^. It may have been simple to you, but it looks quite eloquent to me.

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Old 10-02-2016   #405
 
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Default Re: Sundown SD-3 Line : In the Works

Bumping this thread as a reminder to Jacob that some are still very interested in completion of the 8" sd-3.

Please?...


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Old 10-04-2016   #406
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Default Re: Sundown SD-3 Line : In the Works

I know several people who badly want 8" SD-3 but I'm beginning to think it just isn't going to happen
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Old 10-27-2016   #407
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Default Re: Sundown SD-3 Line : In the Works

Hoody Hoo!! Excited to get these in my truck.



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Old 11-21-2016   #408
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Default Re: Sundown SD-3 Line : In the Works

Quote:
Originally Posted by Bruneti View Post
Bumping this thread as a reminder to Jacob that some are still very interested in completion of the 8" sd-3.

Please?...
I've been having a hard time getting them produced. I AM definitely still working on it. The surround to cone glue joint is proving difficult -- if it's not glued dead-on the drivers tick. So we haven't been able to go to mass production.

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Old 12-01-2016   #409
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Default Re: Sundown SD-3 Line : In the Works

Also interested in the 8" SD3 after reading so much about the SD2. The 8" size is perfect for fitting these in the side cubby areas of my small trunk. I think the 2-8"s in a small hatchback would be more than enough to keep me satisfied.

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Old 12-02-2016   #410
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Default Re: Sundown SD-3 Line : In the Works

FWIW, the SD3 10 fits in places not many other subs fit. I have a pair and its impressive how they work in tight confines. Its a GREAT sub, I'm happy to own some.


If you haven't tried to finagle the 10 in the place you thought an 8 should go, maybe give it a try (with 3D modeling maybe) and you might be surprised.

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Does anyone have an experience in an enclosure a bit smaller than recommended?
I have a brand new sd3 and I have just measured my enclosure with water. Its 14litres or 0.49cuft. Sundown recommend 0.5cuft and the sub take up 1.1cuft.
So I have.. 0.38cuft space available.

I got carried away with epoxy resin and lead shot so I have made it a but small.

I can add wadding.

Last edited by RattyMcClelland; 12-29-2016 at 10:59 AM..
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Old 01-11-2017   #412
 
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Default Re: Sundown SD-3 Line : In the Works

Quote:
Originally Posted by RattyMcClelland View Post
Does anyone have an experience in an enclosure a bit smaller than recommended?
I have a brand new sd3 and I have just measured my enclosure with water. Its 14litres or 0.49cuft. Sundown recommend 0.5cuft and the sub take up 1.1cuft.
So I have.. 0.38cuft space available.

I got carried away with epoxy resin and lead shot so I have made it a but small.

I can add wadding.
It'll be fine, just stuff it.

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Old 02-07-2017   #413
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Default Re: Sundown SD-3 Line : In the Works

Sd-3 8" Surround GIF - Find & Share on GIPHY

More progress on the new SD-3 8" surround. Here's an animation from the development process.

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Old 02-10-2017   #414
 
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Default

Anyone have an accurate cone area measurement (sd) for the SD3-10? I can't find anything online and I can't ever get ahold of sundown.
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Old 02-10-2017   #415
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Default Re: Sundown SD-3 Line : In the Works

https://www.facebook.com/sundownusa/...type=3&theater

There is a complete drawing.

Mid-Surround diameter is 201mm

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Default

Hey, if you're planning another round of "beta testers", I've already got a box and a trunk and have experience with the SD-2 8s. I'll gladly volunteer to compare and contrast.
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Old 02-15-2017   #417
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Default Re: Sundown SD-3 Line : In the Works

Animated GIF - Find & Share on GIPHY

Moving right along... entire moving assembly animated.

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Old 02-16-2017   #418
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Default Re: Sundown SD-3 Line : In the Works

Quote:
Originally Posted by sundownz View Post
Animated GIF - Find & Share on GIPHY

Moving right along... entire moving assembly animated.
Dang! How thick is the top plate gonna be? 3"?!

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Old 02-16-2017   #419
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Default Re: Sundown SD-3 Line : In the Works

It's a 1" top plate -- the motor is linear to 14.5mm but the x-mech is about 10mm beyond that. So the animation is over full x-mech.

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Old 03-03-2017   #420
 
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Default Re: Sundown SD-3 Line : In the Works

Welp, doing a little experiment. I had a friend build me a 1.0 net cubic foot box with a 12" passive radiator for my SD-3 10. The net box volume and weight of the passive radiator resulted in a tuning frequency near 32hz. It modeled very well. I have not heard it yet, as I'm in the middle of updating the stereo in my car.

Jacob, any recommendations on where to set the subsonic filter? What would you predict the power handling of this set-up would be?

Last edited by lamsv; 03-03-2017 at 09:48 AM..
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Old 03-03-2017   #421
 
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Default Re: Sundown SD-3 Line : In the Works

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Originally Posted by lamsv View Post
The net box volume and weight of the passive radiator resulted in a tuning frequency near 32hz. It modeled very well.

Would you mind sharing what program you used to model your PR design? I've been toying with the PR idea because of port lengths in small boxes.




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Old 03-03-2017   #422
 
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Default Re: Sundown SD-3 Line : In the Works

I used a combination of programs to determine the box size. I first modeled my SD-3 10 in WinISD as a ported enclosure. I found 1 cubic foot net tuned to 32hz gave me a pretty nice frequency response, similar to other subs I've had and liked.

I then took that information and plugged it into a spreadsheet I have that determines the weight needed for the passive radiator based on the tuning frequency and box size.

In my case, I was lucky and the weight as is of my passive radiator was within a couple grams of being exactly what I needed for a 32hz tuning frequency in a 1 cubic foot box.

Is the the most accurate way of determining the right box size and weight of the passive radiator? Probably not. But, it should be accurate enough to give me a good base to start with.
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Old 03-12-2017   #423
 
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Question Box Design for SD-3 12"

I've got a SD-3 12 D4 that I'm preparing a sealed enclosure for and wanted to see if anyone had any input. This is my first post so if this is the wrong place for it I apologize.

I'm trying to squeeze this thing between some 2nd row captains chairs but still keep it low enough that when they're folded down they're level with the top of the box.

Main concerns I've got:
  • Is there anything in particular to keep in mind if I'm planning on having the back of the driver flush with the box? Should there be any damping material there or just let it rest directly on the MDF?
  • Does the ground clearance / dissipation area seem sufficient? If necessary I can throw some spacers under and remove them when necessary for cargo.
  • Related to above, is there a downside to removing the rubber surround? Looks like I'd gain about a half inch but would have to provide some sort of sealing against the box?
  • Last one - Currently it's just over 1.1 cubed - little under 1 after displacement. Anyone have any real-life experience they can share regarding performance at different enclosure volumes? I know Sundown recommends 1 CF but I've seen at least one thread recommended closer to .75 CF for best results.

Any comments/criticism are welcome. Plan to run 500w @ 2ohm. Box design / dimensions attached.

Thanks in advance! I'm really looking forward to getting this installed.
Attached Images
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Old 03-14-2017   #424
 
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Default Re: Box Design for SD-3 12"

Quote:
Originally Posted by mrmees View Post
I've got a SD-3 12 D4 that I'm preparing a sealed enclosure for and wanted to see if anyone had any input. This is my first post so if this is the wrong place for it I apologize.

I'm trying to squeeze this thing between some 2nd row captains chairs but still keep it low enough that when they're folded down they're level with the top of the box.

Main concerns I've got:
  • Is there anything in particular to keep in mind if I'm planning on having the back of the driver flush with the box? Should there be any damping material there or just let it rest directly on the MDF?
  • Does the ground clearance / dissipation area seem sufficient? If necessary I can throw some spacers under and remove them when necessary for cargo.
  • Related to above, is there a downside to removing the rubber surround? Looks like I'd gain about a half inch but would have to provide some sort of sealing against the box?
  • Last one - Currently it's just over 1.1 cubed - little under 1 after displacement. Anyone have any real-life experience they can share regarding performance at different enclosure volumes? I know Sundown recommends 1 CF but I've seen at least one thread recommended closer to .75 CF for best results.

Any comments/criticism are welcome. Plan to run 500w @ 2ohm. Box design / dimensions attached.

Thanks in advance! I'm really looking forward to getting this installed.
Your design looks fine to me. I'd be happier with having a slightly larger box (lower QTC for a more transparent bass sound vs punchy higher Q) and would stuff it with open cell foam on the interior walls except the back wall where the magnet sits flush. Model it in WinISD to see what you like best.

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Old 03-23-2017   #425
 
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Default Re: Sundown SD-3 Line : In the Works

Quick update on my SD-3 10" coupled with a 12" passive radiator. I finally had a chance to listen to it briefly. We temporarily hooked it up in my installer's personal car. It sounded fantastic! The upper frequencies seem to have the same volume as when it was in a sealed enclosure. But the low notes. Oh boy, those low notes. It plays much, MUCH deeper with authority. BUT, it does fall off pretty fast eventually. Which is to be expected.

You definitely have to be a LOT more careful with the clarity of the signal and the ultimate power. It bottoms out very easily now if you aren't smart.

Overall, I am super happy I gave this enclosure a try. Can't wait to finally overhaul the stereo in my car so I can give it an extended listen.
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