I'm currently doing some experimenting with my CDP & although I've been using isolation devices for years, just last week I used dynamat & covered the entire top & sides. This is on an older Rotel RCD-855, so I'm not worried about how it looks. I've done other mods but won't go into that aspect now.
At first I was going to just use the dynamat from the inside but there wasn't enough room. I did cover a few exposed areas on the chassis then decided to completely cover the top, which includes the sides. The piece measured something like 23" x 10.5".
The results from this were a little more detail came through, like extended decay, i.e. the reverb & delay on both instruments & vocals and a bit more separation in some background details. On one song for example, I could make out that "something" in the background was a shaker, which wasn't that close to a mic. Background vocals had a little more separation too, which made them less muffled sounding. The overall clarity improved as a result of this.
The CDP is in a wooden rack w/wooden shelves (intensely reinforced) sitting on a Bright Star Audio sandbox with Herbie's grunge buster 1" balls sitting in FIM polished cups with 3 approx. 1 lb. ea. lead filled ankle weights on top.
My next experiment is using an old Rega plinth I've cut down to fit on top of the unit & will put the weights on top of that. I've almost finished filling in the holes, so will be trying that out tomorrow some time.
You also mentioned speaker isolation and there's been a lot written about that too. Rather than type more here, I did a review of VR4GenIII's you can read.
At first I was going to just use the dynamat from the inside but there wasn't enough room. I did cover a few exposed areas on the chassis then decided to completely cover the top, which includes the sides. The piece measured something like 23" x 10.5".
The results from this were a little more detail came through, like extended decay, i.e. the reverb & delay on both instruments & vocals and a bit more separation in some background details. On one song for example, I could make out that "something" in the background was a shaker, which wasn't that close to a mic. Background vocals had a little more separation too, which made them less muffled sounding. The overall clarity improved as a result of this.
The CDP is in a wooden rack w/wooden shelves (intensely reinforced) sitting on a Bright Star Audio sandbox with Herbie's grunge buster 1" balls sitting in FIM polished cups with 3 approx. 1 lb. ea. lead filled ankle weights on top.
My next experiment is using an old Rega plinth I've cut down to fit on top of the unit & will put the weights on top of that. I've almost finished filling in the holes, so will be trying that out tomorrow some time.
You also mentioned speaker isolation and there's been a lot written about that too. Rather than type more here, I did a review of VR4GenIII's you can read.