S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

Finally a sub enclosure for our cars - teaser

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Old 03-06-2012, 12:31 AM
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08' S550, 04' E320 4matic, 03' Acura TL-S 6 speed, 1968 Vespa P150
Finally a sub enclosure for our cars - teaser

I've been at this for awhile and finally got all the measurements worked out to fit our car flush into the back taking up only 10" measuring from the back seat towards the back leaving all the compartment in the trunk accessible.

The box is a slotted vent tuned to 32hz which should give be plenty plenty loud and maintain the SQ of a sealed box. Tuning the enclosure isn't hard, tuning it in such a confine space was the headache. This is going to be my 4th prototype and finally tuned correctly with multiple software. I'm starting my build tomorrow and hopefully it'll be the final.

it's going to be house with a 10w7 paired with a 500.1. with the stock sub removed to let ai through, rattles will be minimal and I should get 90% of the pure sound into the trunk.


Last edited by dannieboiz; 03-06-2012 at 10:05 AM.
Old 03-06-2012, 07:05 AM
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745i BMW '05, S550 '08
Wicked, let me know how it goes. Are you sharing info on the sub build?
Old 03-06-2012, 04:51 PM
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Can't wait to see the out come.
Old 03-06-2012, 10:18 PM
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08' S550, 04' E320 4matic, 03' Acura TL-S 6 speed, 1968 Vespa P150
9 hours at it and finally done... tonight is gonna be a long night waiting for everything to dry. True test to come tomorrow, I gotta go buy an SPL meter some where locally then get me some black carpet. I'm taking pre-orders....
u wanna DIY? I'm selling the design
excuse the toes lol


Coming together pretty nicely

Everything fits


I can still open that last compartment yay!!


Just sitting there waiting to dry.
Old 03-07-2012, 03:41 AM
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745i BMW '05, S550 '08
What lines did you tap for line inputs? Can you give some feed back on wiring it up ? I can build a nice box, no problems there.
Old 03-07-2012, 10:32 AM
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08' S550, 04' E320 4matic, 03' Acura TL-S 6 speed, 1968 Vespa P150
I'll dig up the diagram for you later all the wires you need is on the left side of the trunk.
Old 03-07-2012, 10:49 AM
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I would like to have some info on the wiring diagram also.
Old 03-07-2012, 11:11 AM
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Thanks DB. Your work looks good. I'll probably mount my amp in the trunk as you did and go from there. As for sub, I'll go with a 10" SSA Icon with Sundown Amp. I don't want to ghetto-fy it with too much boom. Good choice on going with a 10" sub. !2" would hit really good to, just don't want to go overboard.
Old 03-07-2012, 11:35 AM
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08' S550, 04' E320 4matic, 03' Acura TL-S 6 speed, 1968 Vespa P150
http://hotfile.com/dl/149142763/c11c...iring.zip.html

I plan on mounting the amp on top of the box once I have it carpet up and build a face sheet to flush everything in so it would look like it's part of the car.
Old 03-07-2012, 12:49 PM
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08' S550, 04' E320 4matic, 03' Acura TL-S 6 speed, 1968 Vespa P150
I couldn't stand it anymore so decided to stay home from work today and test the box out. I popped in my bass test track and let it go through the frequency. I'm sad to say, now I need to dynamat my car, lots of it. LOL

it's at least twice the loudness of my old sealed enclosure.

I do noticed a lost in punchiness. but it SQ is still decent compared to the other 12" subs I tried in this car with similar enclosure. I'm going to keep in there for a while to see if it can grow on me. if not I'm gonna build a sealed box to fit and I'm sure I can design in an amp rack next time around since the sealed box would require half the space once I minus all the vents and braces out.

Time to go buy some carpets.
Old 03-07-2012, 01:28 PM
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I'm thinking of doing a single 12w6 with the 500.1 amp? I took out my trunk carpet and I guess the previous owner had a sub set up before. Because some of the wires had electrical tape on them. Now I just need the wire diagram to see what wires are what.
Old 03-07-2012, 02:07 PM
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08' S550, 04' E320 4matic, 03' Acura TL-S 6 speed, 1968 Vespa P150
Diagram is in the above link
Old 03-07-2012, 03:36 PM
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Originally Posted by dannieboiz
Diagram is in the above link
Thanks bro! I'll check it out when I get home.
Old 03-07-2012, 03:52 PM
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amg cl/s
i'm going to be doing a arc audio black 10" sub and 1000 watt amp w/fiberglass box the next few days in mine. ill be sure to post pics.
Old 03-07-2012, 05:56 PM
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Nice work and looking forward to future builds. DB you think the sealed box would sound better than the slotted box? I'm only doing this build once, so I'm open to ideas. I definitely want to get that stock sub out of there. The rattle that thing has now is terrible.
Old 03-10-2012, 11:12 PM
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Originally Posted by dannieboiz
Diagram is in the above link
just took a look at the wire diagram,and wow that's confusing? Can you show me what wires did you use to connect the sub?
Old 03-11-2012, 01:39 AM
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08' S550, 04' E320 4matic, 03' Acura TL-S 6 speed, 1968 Vespa P150
You need to remove the driver side trunk panel to find the bundle of wires. Use wire taps it'll make your life easier and less intrusive.

Sub 1
+ = Blue
- = Blue/White

Sub 2
+ = Brown
- = Brown/White

I only tapped into the sub 1 wirings and used a splitter. u don't need both since they're mono anyways.

If I remember correctly you'll there are two blue cables. The correct one should have a matching blue/white and the other single blue wire is for your remote turn on if your amp doesn't have a remote sensing on feature.
Old 03-11-2012, 10:21 AM
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Originally Posted by dannieboiz
You need to remove the driver side trunk panel to find the bundle of wires. Use wire taps it'll make your life easier and less intrusive.

Sub 1
+ = Blue
- = Blue/White

Sub 2
+ = Brown
- = Brown/White

I only tapped into the sub 1 wirings and used a splitter. u don't need both since they're mono anyways.

If I remember correctly you'll there are two blue cables. The correct one should have a matching blue/white and the other single blue wire is for your remote turn on if your amp doesn't have a remote sensing on feature.

I'll take a look and see if I can find them wire.
Old 04-17-2012, 11:24 AM
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DB how's that sub going for you and what are your thoughts on slot vs sealed enclosure. I just ordered an Alpine Type R 12" sub. Going to go with the 1000 watt Alpine Amp to match. Alpine makes a good sub for the buck, it's nothing like my SKARs or SSA Icons which I don't feel are needed in the S550. Should be just enough to give me the bass I'm looking for though with a single sub.
Old 04-17-2012, 11:43 AM
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Originally Posted by 745Japan
DB how's that sub going for you and what are your thoughts on slot vs sealed enclosure. I just ordered an Alpine Type R 12" sub. Going to go with the 1000 watt Alpine Amp to match. Alpine makes a good sub for the buck, it's nothing like my SKARs or SSA Icons which I don't feel are needed in the S550. Should be just enough to give me the bass I'm looking for though with a single sub.
This box design actually produce much more bass than a sealed box. Even at low volume, the bass in the cabin is probably twice as loud. Depending on the type of music you listen to. If you want a flat bass for trance/techno go with a sealed box. If you want to wake up the neighborhood with your hip hop and rap then ported is the way to go.

OTOH: I used to have a type R in a slotted box and it played extremely well.
Old 04-17-2012, 11:46 AM
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Originally Posted by dannieboiz
This box design actually produce much more bass than a sealed box. Even at low volume, the bass in the cabin is probably twice as loud. Depending on the type of music you listen to. If you want a flat bass for trance/techno go with a sealed box. If you want to wake up the neighborhood with your hip hop and rap then ported is the way to go.

OTOH: I used to have a type R in a slotted box and it played extremely well.
Just want it to sound good and blend in with the Logic 7 system. Not trying to blast the "hood." I'm sure they get enough of that with work van playing those SKAR's I have in it. Looking for a nice and tight bass setup.
Old 04-17-2012, 11:52 AM
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Originally Posted by 745Japan
Just want it to sound good and blend in with the Logic 7 system. Not trying to blast the "hood." I'm sure they get enough of that with work van playing those SKAR's I have in it. Looking for a nice and tight bass setup.

Then sealed box is the way to go. The hardcore box builder will always tell you that they can design a ported box to sound as good as a sealed but louder. I'm just not there yet. LOL I say stick with a sealed box, it'll make your life easier. I might go back to a sealed box as well when I'm bored and decide to build another one.
Old 04-17-2012, 12:13 PM
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With a sealed enclosure will I still get good bass in the cabin though?
Old 04-17-2012, 12:21 PM
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That all depends on you. What's really enough? The sealed box sound cleaner but for sure missing a few DB in the cabin. If you can lose the stock sub to provide air flow between the trunk and the cabin, you should gain a few DB.

But then again, it depends on your sub and amp as well. If you like your hair tingling with the bass then go with a ported box. If you want to hear a flatter response and more accurate bass go with a sealed
Old 04-20-2012, 08:50 PM
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Not to thread jack but here is the build on my car:
http://www.diymobileaudio.com/forum/...xcellence.html


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