Randy's DIY Subwoofer Isolation Riser - AVS Forum
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Old 07-29-2012, 08:53 PM - Thread Starter
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After getting my Paradigm Studio SUB 12 and listening to some bass-heavy music and movies it became clear that I need some sort of isolation riser for it since it stands directly on the hardwood floor and it frequently produces some pretty annoying rattling. First I was trying to find some commercial risers like Auralex Subdude or Gramma but their sizes are no good. I wanted only one platform that would nicely fit my sub. So I decided to build my own. Got some ideas on this forum and elsewhere and here's what I did:

1. First, I got some material:
 

2. Tools needed:
  • Utility knife
  • Electric staple gun
  • Tape measure
  • Scissors
  • Marker
  • Ruler

3. Cut the under-carped pad and glue it on one size of MDF:

 

4. Glue and staple the sides of the runner carpet to the MDF:

 
 

5. Cut and glue the carpet on the front/bottom side of the board:

 
 

6. Finish the back/bottom side of the board:


7. Finished board:

 
 

8. Board installed with temporary legs made of hard foam (I know, doesn't look nice...but works great!):




 
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Old 07-29-2012, 09:53 PM
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So are you going to tell us how it worked or not?! biggrin.gif
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Old 07-30-2012, 06:47 AM - Thread Starter
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Quote:
Originally Posted by pitviper33 View Post

So are you going to tell us how it worked or not?! biggrin.gif

Yes, it worked very well, I was quite surprised. All of the rattles were eliminated and now whatever rattles, it's airborne. The hardwood floor has no reason to vibrate anymore. Now I can finally enjoy "Bassotronic" or "Bass Outlaws"...
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Old 07-30-2012, 07:08 AM
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OP... I did the same basic thing. Spray paint the foam black like I did and you won't even see them they will blend in with the platform.

http://i1264.photobucket.com/albums/jj489/flickhtguru/DSCN2686.jpg

http://i1264.photobucket.com/albums/jj489/flickhtguru/IMG_0268.jpg

Shawn
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Old 07-30-2012, 07:17 AM - Thread Starter
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Quote:
Originally Posted by flickhtguru View Post

OP... I did the same basic thing. Spray paint the foam black like I did and you won't even see them they will blend in with the platform.
http://i1264.photobucket.com/albums/jj489/flickhtguru/DSCN2686.jpg
http://i1264.photobucket.com/albums/jj489/flickhtguru/IMG_0268.jpg

Looks great, I like that. I already did try to spray paint some foam leftovers but then when I slightly squeezed them, a bit of the paint fell off them (and after serious squashing almost all of it)...you haven't noticed anything like that? Just curious...what kind of paint did you use?
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Old 07-30-2012, 08:08 AM
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Looks good. Nicely done tutorial too.
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Old 07-30-2012, 09:45 AM
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Quote:
Originally Posted by RandyDee View Post

Looks great, I like that. I already did try to spray paint some foam leftovers but then when I slightly squeezed them, a bit of the paint fell off them (and after serious squashing almost all of it)...you haven't noticed anything like that? Just curious...what kind of paint did you use?

No i didn't have any fall off. I used flat black spray paint either Krylon or Rustolium and I did 3 coats to fill in all the pours. BTW my foam is 2" thick and the platform is 3/4" MDF painted flat black with a roller.

Shawn
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Old 08-04-2012, 03:36 PM - Thread Starter
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And since these "temporary" riser legs made of hard foam worked so well, I'm gonna keep them. I just covered them with the same carpet and here's the final picture (not bad, I must say, I'm happy):

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Old 08-04-2012, 03:52 PM
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I make the pads out of dense rubber foam the one thats pliable and full of bubbles. Also use it as a damper for my projector and bluray player for vibrations.

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Old 08-04-2012, 05:45 PM
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Great riser, Randy. Very cost effective solution with the carpet padding instead of the more expensive closed cell foam that people often used. Looks nice, too smile.gif

Although, I am surprised when people use a layer of acoustical closed cell foam. Sound deadner is much more effective for stopping resonation, and generally cheaper than thick acoustical foam.

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