DIY Subwoofer Risers

[sputter]

I'm considering making a subtrap for my Mirage Omni S10.
It will measure 16 1/2" x 17 1/2" by 8" deep with no edges. Any suggestions on what to stuff the box with? Also, how thick do you feel the carpet should be?

[kareface]

Originally Posted by sputter

I'm considering making a subtrap for my Mirage Omni S10.
It will measure 16 1/2" x 17 1/2" by 8" deep with no edges. Any suggestions on what to stuff the box with? Also, how thick do you feel the carpet should be?

Get the lowest PFC fiberglass you can, and pull it apart like cotton candy. Make sure you use a mask and gloves when you do. The idea is to space out the fiber as much as you can. This summer I'll be working on a possible replacement, but at 8" deep fiberglass might be your best option. Make sure the fabric covering the gaps is something you can easily breathe through and make sure the gaps are fairly large.

[Big Daddy]

If you plan to use fiberglass, buy a high quality mask. Fibeglass is a health hazard.

[crazyBLUE]

Originally Posted by Big Daddy

If you plan to use fiberglass, buy a high quality mask. Fibeglass is a health hazard.

I agree !

The thing that worries me about Fiberglass is Vibrations Transferred from the sub to the Riser . Fiberglass vibrating loose & starting to Float around . There is A chance it gets out into the room !

[kareface]

Originally Posted by crazyBLUE

I agree !

The thing that worries me about Fiberglass is Vibrations Transferred from the sub to the Riser . Fiberglass vibrating loose & starting to Float around . There is A chance it gets out into the room !

It won't. Ethan Winer talks about using uncovered fiberglass panels, as long as you don't physically disturb (by that I mean rub up against it) the panels he didn't have problems with fiber strands. Anyways, the grill cloth is much denser threading then burlap which is commonly used to cover fiberglass panels used in sound rooms. It really isn't a problem, just as long as you are careful when initially shredding the fiberglass.

[sputter]

Thanks for the reminder about Fiberglass.

What I'm seeing here is roughly 3 versions of risers.
The table top style, open framed box and a solid box (which is what I was considering).
Are there any cons soundwise to not pick one "style" over another?

It seems to me the solid box with stuffing and carpet covered is the easiest to build.

I'm not sure I want to deal with Fiberglass so i'll likely go with one of the foams previously mentioned.

[kareface]

Originally Posted by sputter

Thanks for the reminder about Fiberglass.

What I'm seeing here is roughly 3 versions of risers.
The table top style, open framed box and a solid box (which is what I was considering).
Are there any cons soundwise to not pick one "style" over another?

It seems to me the solid box with stuffing and carpet covered is the easiest to build.

I'm not sure I want to deal with Fiberglass so i'll likely go with one of the foams previously mentioned.

Boxes like that tend to resonate, if you are going to build one for a sub I'd suggest that you brace it really well or fill it with playsand. The shorter style riser has the advantage of isolating the sub. The advantage of the open riser is it has added benefit of reducing energy in the vertical node. Any of them is better then nothing in most cases.

[4x12]

Hey guys,

I built a couple of subrisers for my dual A2-300 setup...

https://www.blu-ray.com/community/ga...2&folderi=3592

Let me know what you thnk!

[crazyBLUE]

Originally Posted by 4x12

Hey guys,

I built a couple of subrisers for my dual A2-300 setup...

https://www.blu-ray.com/community/ga...&folderid=3592

Let me know what you thnk!

You did A great Job on the Risers 4x12 . I like the design of them

[Big Daddy]

Originally Posted by 4x12

Hey guys,

I built a couple of subrisers for my dual A2-300 setup...

https://www.blu-ray.com/community/ga...&folderid=3592

Let me know what you thnk!

Congratulations. Great job and beautiful risers. When are we invited to Montreal to audition them? The weather is getting nicer and I don't mind a stroll along the St. Lawrence river to remember the good old days.

[4x12]

Originally Posted by crazyBLUE

You did A great Job on the Risers 4x12 . I like the design of them

Thanks dude! I had a ruff idea of what I wanted it to look like and then noticed pics of the eD riser and it was pretty much dead on... My idea was using the full bottom part of the foam block not the upper "L" shape. But I liked this better!

Originally Posted by Big Daddy

Congratulations. Great job and beautiful risers. When are we invited to Montreal to audition them? The weather is getting nicer and I don't mind a stroll along the St. Lawrence river to remember the good old days.

Anytime dude! Let me know a couple of day's in advance so I can get some nice AAA meat and grill up some food or a few stacks of ribs! And I could always use some "pro on-site" tips from the master

[dancel]

What you guys think, I have one of these @ home, you think this will work as a riser?

http://store.roadreadycases.com/dyn_...=RRX2&k=113884

[kareface]

Originally Posted by dancel

What you guys think, I have one of these @ home, you think this will work as a riser?

http://store.roadreadycases.com/dyn_...=RRX2&k=113884

The floor ones are pretty cheap and easy to make. That box wouldn't resonate, but it wouldn't really provide isolation either.

[4x12]

Originally Posted by dancel

What you guys think, I have one of these @ home, you think this will work as a riser?

http://store.roadreadycases.com/dyn_...=RRX2&k=113884

Originally Posted by kareface

The floor ones are pretty cheap and easy to make. That box wouldn't resonate, but it wouldn't really provide isolation either.

I agree with Kareface.... It cost me about $25 a piece to make my newest risers. Swing by a HomeDepot and check out the left over wood section. The first riser I made for my AA sub cost me $30 but I had two pieces of 2x4's for the base.

[dancel]

Originally Posted by 4x12

I agree with Kareface.... It cost me about $25 a piece to make my newest risers. Swing by a HomeDepot and check out the left over wood section. The first riser I made for my AA sub cost me $30 but I had two pieces of 2x4's for the base.

I did try the turntable coffin and it made no difference.. so i went down my basement and put this together.. not done yet of course I still need the foam.



what you guys think?

[progers13]

Originally Posted by dancel

I did try the turntable coffin and it made no difference.. so i went down my basement and put this together.. not done yet of course I still need the foam.



what you guys think?

Looks good! Could you put a shroud or something around the legs, or are you planning on leaving it open with the foam visible?

[dancel]

Originally Posted by progers13

Looks good! Could you put a shroud or something around the legs, or are you planning on leaving it open with the foam visible?

I might leave it visible I am not sure, I just tested and it and the bass is less boomy already.

[crazyBLUE]

Originally Posted by dancel

I might leave it visible I am not sure, I just tested and it and the bass is less boomy already.

Add some carpet to the top

[dancel]

Originally Posted by crazyBLUE

Add some carpet to the top

Yep thinking about that too..

[ShockWave]

Wow, great great job guys on those risers!! I will be making two new ones shortly myself! Thanks Bid D for sharing this info, I have learned a lot from people here. What exactly is a subtrap?