bit confused about racks

Mike Lavigne said:
interesting feedback. i apologize for all the questions below, but there are so many rack issues of context that i'm wanting to fully understand.

Adona makes a number of racks. to my knowledge Adona does not have racks with isolation suspension points (maybe it's something new). it would be helpful to know which model you used? and with the Adona did you use spikes? and did those spikes get through your carpet into the concrete?

does your wood rack weigh more than the particular Adona rack you tried? and does your wood rack have flat feet, or spikes?

and can you provide a link to the 'Hebbies'? thanks. did you use the 'Hebbies' with your wood rack too? it appears that the VPI Classic 1 turntable uses integral decoupling footers. did you bypass those footers with the Hebbies? or place the VPI footers on top of the Hebbies?

the idea of a solid steel/aluminum rack (Adona) is to provide a solid base for footers you would use between the granite shelves and your gear. in essence the footers are then an impedance layer. solid wood will add lots of mass, but also will have it's own resonance too. do you use decoupling footers under your gear on your wood shelves?
Click to expand...

Giant Fat Glider
– Herbie's Audio Lab

Adona Audio Racks I guess they call it independent support system. It was a nice rack and since it was close to my home a big savings on shipping.

I would say, my racks are about the same weight about 100-135 lbs

No spikes on the tile, but I did use Cone/Spike Puckies
– Herbie's Audio Lab

Just place the equipment on the shelf, no footers were needed. The way I look at it, if the needle on my gauge didn't move, why waste the money on other footers under the equipment,. We are talking 2 " of thick maple for 3 shelves and under my TT,the top shelf (4th) its almost 3" of solid maple. Custom Furniture, Hi End Audio Stereo Racks and Isolation Platforms at Timber Nation.

Hope this helps
 
CPP said:
Giant Fat Glider
– Herbie's Audio Lab

Adona Audio Racks I guess they call it independent support system. It was a nice rack and since it was close to my home a big savings on shipping.

I would say, my racks are about the same weight about 100-135 lbs

No spikes on the tile, but I did use Cone/Spike Puckies
– Herbie's Audio Lab

Just place the equipment on the shelf, no footers were needed. The way I look at it, if the needle on my gauge didn't move, why waste the money on other footers under the equipment,. We are talking 2 " of thick maple for 3 shelves and under my TT,the top shelf (4th) its almost 3" of solid maple. Custom Furniture, Hi End Audio Stereo Racks and Isolation Platforms at Timber Nation.

Hope this helps
Click to expand...

great looking wood rack, appears to be very hunky and solid.

yes; very much appreciate you going to the trouble to respond and adding all the links. it does help for me to understand why your results with Adona are dramatically different than mine.

having a concrete floor, but having carpet and flat footed racks and pucks on top of the carpet, using a mid level Adona rack......you are hearing the sandwich combo of the carpet/footer/rack bottom. and that Adona rack with the link is not known to me. i use 3 of the Reference Zero GXT Adona racks in my system.

Audio Racks, Modular Audio Video Furniture and Isolation Platforms at Adona Corporation.

i suspect your wood rack is solid and tight, and it appears that the shelves are solid and not adjustable. it's working better with your floor interface too.

the Adona shelves and top are adjustable and solidity relies on exact leveling of the shelf supports and then having each shelf mass loaded. so the design is more set-up dependent.

i'm guessing on a lot of what i'm saying, and i don't doubt your results. only that it all starts with the floor interface and rack solidity and whether those two things are synergistic. if you were to spike each rack through the carpet it would give you a more predictable compare of rack performance. otherwise it's a bit of serendipity......and where you find it. we are all here trying to assist the OP with his search.

when you jump up and down, the floor interface you are using will obviously amplify the resonance your phone senses. if the Adona rack was spiked, and mass loaded effectively, that 'spring-effect' would not be happening. that is what happens in my room.

as far as the Herbie's footers; i've not used them so i have no idea of their positive or negative contributions.

personally as i have the Adona racks installed in my system i am very satisfied by them.
 
Mike Lavigne said:
great looking wood rack, appears to be very hunky and solid.

yes; very much appreciate you going to the trouble to respond and adding all the links. it does help for me to understand why your results with Adona are dramatically different than mine.

having a concrete floor, but having carpet and flat footed racks and pucks on top of the carpet, using a mid level Adona rack......you are hearing the sandwich combo of the carpet/footer/rack bottom. and that Adona rack with the link is not known to me. i use 3 of the Reference Zero GXT Adona racks in my system.

Audio Racks, Modular Audio Video Furniture and Isolation Platforms at Adona Corporation.

i suspect your wood rack is solid and tight, and it appears that the shelves are solid and not adjustable. it's working better with your floor interface too.

the Adona shelves and top are adjustable and solidity relies on exact leveling of the shelf supports and then having each shelf mass loaded. so the design is more set-up dependent.

i'm guessing on a lot of what i'm saying, and i don't doubt your results. only that it all starts with the floor interface and rack solidity and whether those two things are synergistic. if you were to spike each rack through the carpet it would give you a more predictable compare of rack performance. otherwise it's a bit of serendipity......and where you find it. we are all here trying to assist the OP with his search.

when you jump up and down, the floor interface you are using will obviously amplify the resonance your phone senses. if the Adona rack was spiked, and mass loaded effectively, that 'spring-effect' would not be happening. that is what happens in my room.

as far as the Herbie's footers; i've not used them so i have no idea of their positive or negative contributions.

personally as i have the Adona racks installed in my system i am very satisfied by them.
Click to expand...

Not a problem, its all about the end results and racks like cables is system and personal preference. Again the Adona rack was really well made, sturdy I liked it, but the wife happened to like the wood better and it fit my needs.
 
IMG_2901.JPG

This is what I consider a "hardwood" rack. This is 8" x 3" sleepers, pretty much the same size as what you will see under train tracks. What you are looking at is Australian hardwood, as in river red gum. This iteration weighed 400kgs, it did not resonate!
 
What do you think of Mapleshade's idea of having threaded rods as legs. It adds more mass for the size of the legs, and makes the distances between the shelves adjustable.
 
in my system the configuration that worked best on a suspended floor with oak hardwood is: isolation for the rack and coupling for the speakers.

in terms of a rack, i just received a core audio designs 3L plyCraft component rack. very happy with it. the shelves are mass loaded for extra weight. customized size is possible and they do ship internationally. it is worth reading the rack description on their web-site just for the information alone.

Component Racks | Core Audio Designs
 
paleo12 said:
What do you think of Mapleshade's idea of having threaded rods as legs. It adds more mass for the size of the legs, and makes the distances between the shelves adjustable.
Click to expand...

That would change resonance & dissipate it for the reason of from one shelf to the next it will become moot, as in the vibration has gone through 2 very different materials so it won't telegraph because of their different molecular structure, unless, the rods act as a multiplier. If so, footers are cheap. Me, I just used half a tree
 
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