The most cost-effective DIY for your situation will be a laminated wood platform a couple inches bigger with springs at the four corners. The first one I built was using springs sourced by searching around eBay. This is a pretty good way to go but it does call for a good deal of searching to find the springs with right dimensions and stiffness.
No matter what springs you use, and whether you use a single spring or multiple like Nobsound, it is critical that they be sized to compress about half way under load. Too stiff, they won't compress enough, they won't provide enough isolation. Too soft, they will compress too much. Read noromance's springs under turntable thread, you will see a whole bunch of us noticing the change in sound and how good it can be when this is fine tuned. Mahgister is the champ, he has used weights to tune his to the ounce.
I still have some plain springs under my subs. Gave up on these larger type springs in favor of Nobsound simply because Nobsound makes it easier to tune by adding or removing springs. Also you can make additional footers for your leftover springs. Simply use a 1/4" drill bit to replicate the Nobsound dimples to stick the springs into and you can have all the footers you want from MDF, wood, acrylic, whatever.
Study the Townshend Podiums to understand how to build your platforms. The key is to have the springs come up through the corners into a tower. This allows you to keep the whole thing very low profile. Did this with mine made of MDF, floor clearance was a fraction of an inch, total height increase less than an inch. Three quarters of that was MDF. Use a much stronger hardwood laminate and you could get by with probably 1/2" but it must be laminated for strength as well as vibration control!
This will be quite good. But I have to tell you, to be honest, nowhere near Podium level. With springs you will hear much more detail, the speakers will disappear, and a layer of grain and etch and grunge you probably never even suspected was there will be gone. With Podiums this gets even better, but the improvement in tone, the ability of each individual instrument to sound so much more like it really does, this has to be heard to be believed.
I have some springs Rick sent me, don't need them now with the Podiums. They are sized for Moabs, will work with anything around 120-170 lbs. If rixthetrick doesn't want em back I could send em on to you, if they will work. Otherwise Nobsound, all the way.
No matter what springs you use, and whether you use a single spring or multiple like Nobsound, it is critical that they be sized to compress about half way under load. Too stiff, they won't compress enough, they won't provide enough isolation. Too soft, they will compress too much. Read noromance's springs under turntable thread, you will see a whole bunch of us noticing the change in sound and how good it can be when this is fine tuned. Mahgister is the champ, he has used weights to tune his to the ounce.
I still have some plain springs under my subs. Gave up on these larger type springs in favor of Nobsound simply because Nobsound makes it easier to tune by adding or removing springs. Also you can make additional footers for your leftover springs. Simply use a 1/4" drill bit to replicate the Nobsound dimples to stick the springs into and you can have all the footers you want from MDF, wood, acrylic, whatever.
Study the Townshend Podiums to understand how to build your platforms. The key is to have the springs come up through the corners into a tower. This allows you to keep the whole thing very low profile. Did this with mine made of MDF, floor clearance was a fraction of an inch, total height increase less than an inch. Three quarters of that was MDF. Use a much stronger hardwood laminate and you could get by with probably 1/2" but it must be laminated for strength as well as vibration control!
This will be quite good. But I have to tell you, to be honest, nowhere near Podium level. With springs you will hear much more detail, the speakers will disappear, and a layer of grain and etch and grunge you probably never even suspected was there will be gone. With Podiums this gets even better, but the improvement in tone, the ability of each individual instrument to sound so much more like it really does, this has to be heard to be believed.
I have some springs Rick sent me, don't need them now with the Podiums. They are sized for Moabs, will work with anything around 120-170 lbs. If rixthetrick doesn't want em back I could send em on to you, if they will work. Otherwise Nobsound, all the way.