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Isolation Feet for Garrard 301 wood plinth

Now that I have my table competed (almost) and table set up. I am looking for some suggestions as to what to put under the wood plinth, the plinth's main structure is bamboo ply, with Padauk wood feet 1.75" x 1.75" x 1" in height. the feet are machined square and true and look very nice with all the other contrasting woods. Bamboo, Padauk (feet and arm board), rose wood and maple inset. I have pictures in my profile. I have the table sitting on a 18"x24"x3 granite slab 165lbs that is sitting directly on the 3 posts of the top shelf of my Lovan Stand with each shelf sitting in pin points all the way to the floor and sitting on brass cups about 2" in diameter and 1/2 thick. I have fantastic stability and very little movement when walking around the room but I do get nose when taping the plinth and stand through the system ie cart etc. Its a dull thud but I think some sort of isolation may be in order between one of the layers most likely the plinth and granite. This set up worked very well for my previous set up the oracle Delphi. I would like to find something that is not going to take away from the visuals of what I think its a beautiful plinth but give me what I need to solve the issues. I also can not afford to replace my whole rack system at this time maybe in the future. budget up to lets say $1000. I will need 3 min but most likely 4 as the table is about 60lb total now. Have to say it sounds wonderful best move I made in audio in a long time picking up that Garrard 301 and building a table out of it. I will be adding some upgrades in the future like platters etc but for now i'm enjoying music again.

I added a Herbies audio record mat and looked at there feet they would work but to be honest not very attractive, I've seen some nice brass feet can not remember if they had any isolation.

Anyway to you my like minded hobby friends

128x128glennewdick
glennewdick's avatar
glennewdick OP
1,731 posts
 
I don't seem to get that effect but mind you my slab of granite is 165lb and sitting on a three legged stand with pin point isolation on every shelf. I also have the plinth on three pin points on top of the granite. That said I have my wood working guy boring another hole for a second arm and also making me a 4" think bamboo shelf i'm going to try under the table mostly for esthetics but may help in sound as well.
 
geoffkait's avatar
geoffkait
23,365 posts
 
Yeah, a 3" slab of granite or bluestone ain’t going to ring. If any stone slab rings when you strike it with a hammer, don’t strike it when the music’s playing and you’ll be fine.
noromance's avatar
noromance
10,027 posts
 
Yeah, years ago I moved my 401 off the concrete floor to my new oak table and was dismayed by the loss of ...everything. Sat it on concrete slab on top of oak and that helped. Switching to granite brought it all together. Adding steel points between granite and plinth snapped focus into shape. Can’t imagine a Loricraft plinth working well with those squash balls.

noromance's avatar
noromance
10,027 posts
 

So this older post came up when researching something else. Amazing how things progress since my 2017 advice quoted below. Forget the cones and pointy bits. Use springs - better soundstage depth and layering.

Directly coupled to granite using metal points. 

dover
2,280 posts
 

@glennewdick 

i'm using some steel pin points i find they help focus everything better then the sorbothane I have also tried. seems everything I used that isolated softened the presentation the hard points tighten everything up and adds to the detail.

I have a custom 301 with high density compressed bamboo ply / birch ply hybrid plinth I built myself. I have also put together a 301 with double layer high density compressed bamboo ply and a 401 with engineered stone plinth for friends.

I prefer rigid feet to ground the TT. The only exception I have found if you have feedback is the Isoacoustics footers (trialled on a 401/Kuzma 4point combo ).

I use only 3 feet asymmetrically placed to ensure the motor and tonearm centre of gravity are within the triangle - 1 to the centre left of the motor. 1 behind the arm & 1 on the right front.  3 feet always sounds better than 4.

Personally I am not a fan of granite - have tried it over the years in various applications and to my ears always seems to add a resonance ( ring ) - high mass does ameliorate this but it is still there.

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