SET amp owners thread

[Atmasphere]

. Vibrations from transformers can get into tubes.

Its easier to put out the match before the forest fire. If the transformer is an EI type and has feet, it can be isomerically mounted. That does a lot more than damping a chassis that includes a transformer with mechanical vibration.

You need a slightly larger hole for the bolts mounting the transformer, in which isomeric grommets are placed (EAR makes excellent examples; if DIY on a budget you use rubber grommets). A fender washer is then used on either side of the grommet and then the bolt goes through the whole thing secured by a locknut (so it won't come off even though its not tightened down much). Now there is no metal in contact with the chassis and so vibration is vastly reduced. You may find that a lot of the mechanical noise from the chassis is simply gone- that you have to have your ear very close to the transformer to hear anything at all.

 

[DasguteOhr]

I agree. Vibrations from transformers can get into tubes. My Blade is 1/4" SS plate on top and I think 1.5 inch cast on the sides to damp vibratinons. Mass and rigidity.
Polymer dampers work. You could loose snap and detail with soft stuff. Whatever damping device Thomas uses has a sonic signature. I assume the gain works for his expectations.

No, guaranteed trouble-free operation, that's what it's designed for.

Yes, rigidity and mass also have a sound. So do the feet and platforms. So far, the best feet I have on the amps are 5/16 bolts that is ship mounted to the crate and pallet with. They have round ends.

FWIW one of the biggest speaker gains for me was mounting the crossover remote from the stand. Huge jump in clarity.

Best feets for tube electronic for me ssc audio,improves detail, clarity and transparency of the image of the music. String supension conzept

 

[Atmasphere]

Best feets for tube electronic for me ssc audio,improves detail, clarity and transparency of the image of the music. String supension conzept

Those look like they isolate. If the amp or whatever is getting vibration from the surface on which it resides then you want a device like this.

But if there is a damping platform in use, then you want something that transfers vibration, like a metal point.

 

[DasguteOhr]

Those look like they isolate. If the amp or whatever is getting vibration from the surface on which it resides then you want a device like this.

But if there is a damping platform in use, then you want something that transfers vibration, like a metal point.

This works so good that i made my hifi rack with same princip.
I use thin steel cables tensioned with 40kg, carry each device base decoupled via three spikes.

 

[Atmasphere]

This works so good that i made my hifi rack with same princip.
I use thin steel cables tensioned with 40kg, carry each device base decoupled via three spikes.

My equipment rack is a Sound Anchors rack that is custom built for my electronics. To that end there is enough room to support an isolation platform beneath the preamp which is just below the turntable, which also resides on a similar platform, both of which is very dead. Because of this they are semi-isolated from the rack. The preamp is then coupled directly to its anti-vibration platform.

The rack in turn rests on a set of Aurio Pro bearings to relieve side to side motion and vibration while otherwise coupling to the floor. This allows the system considerably higher sound pressures while still remaining relaxed.

 

[DasguteOhr]

My equipment rack is a Sound Anchors rack that is custom built for my electronics. To that end there is enough room to support an isolation platform beneath the preamp which is just below the turntable, which also resides on a similar platform, both of which is very dead. Because of this they are semi-isolated from the rack. The preamp is then coupled directly to its anti-vibration platform.

The rack in turn rests on a set of Aurio Pro bearings to relieve side to side motion and vibration while otherwise coupling to the floor. This allows the system considerably higher sound pressures while still remaining relaxed.

I copied the principle from SSC Audio Base. sounds phantasic I have test it a lot with other products never sound it so good with that

 

[Atmasphere]

I copied the principle from SSC Audio Base. sounds phantasic I have test it a lot with other products never sound it so good with that

I'm curious. It looks like the cables are under tension. Do they resonate when plucked?

 

[DasguteOhr]

I'm curious. It looks like the cables are under tension. Do they resonate when plucked?

Yes,the pitch changes depending on how tightly you tighten them. The important thing about this principle is the small contact area through which vibrations can pass. You can tune the sound of this. There have been manufacturers who have used this principle in CD transport, e.g Restek and Micromega, to isolate the drive from the casing.exsample restek rotor cd transport a really heavy machine 40kg

 

[cal3713]

It's not about device feet; it's about combating microphonics. Many manufacturers have these problems with their steep tubes. Ideally, they use those tubesockets they isolate from the housing. Since they're difficult to retrofit, these vibration mounts are worth a try.
Exsample thomas mayer phonoView attachment 147295

Can you zoom in (or explain a bit) so I can understand what the damping mechanism is there? I can see it's floating with some silicone or rubber between the two platforms, but I can't wrap my head around how the two parts are actually connected. I need to modify my preamp (pictured in my account profile) to incorporate some antivibration for the dht tube sockets. I can hear too much ringing...

 

[Kingrex]

It looks to me like the equipment platform if suspended by bead chain to the frame below.

 

[Kingrex]

Its easier to put out the match before the forest fire. If the transformer is an EI type and has feet, it can be isomerically mounted. That does a lot more than damping a chassis that includes a transformer with mechanical vibration.

You need a slightly larger hole for the bolts mounting the transformer, in which isomeric grommets are placed (EAR makes excellent examples; if DIY on a budget you use rubber grommets). A fender washer is then used on either side of the grommet and then the bolt goes through the whole thing secured by a locknut (so it won't come off even though its not tightened down much). Now there is no metal in contact with the chassis and so vibration is vastly reduced. You may find that a lot of the mechanical noise from the chassis is simply gone- that you have to have your ear very close to the transformer to hear anything at all.

Can't find ones from EAR?

 

[microstrip]

Its easier to put out the match before the forest fire. If the transformer is an EI type and has feet, it can be isomerically mounted. That does a lot more than damping a chassis that includes a transformer with mechanical vibration.

You need a slightly larger hole for the bolts mounting the transformer, in which isomeric grommets are placed (EAR makes excellent examples; if DIY on a budget you use rubber grommets). A fender washer is then used on either side of the grommet and then the bolt goes through the whole thing secured by a locknut (so it won't come off even though its not tightened down much). Now there is no metal in contact with the chassis and so vibration is vastly reduced. You may find that a lot of the mechanical noise from the chassis is simply gone- that you have to have your ear very close to the transformer to hear anything at all.

If we have the space miniature silent blocks are also an excellent way of getting rid of microphony due to transformer vibration.

 

[Kingrex]

Of all these isolators to reduce transformer vibration, is there a particular material that works best?

 

[Campo007]

Ayon Spark V driving the Platinum 10 full range driver in my Lii Song Liionidas Extreme open baffle speakers. (the W15 woofers are being driven by Yamaha PX5's).