More times than not plastic gears failed on me. I would prefer minimal noise and added piece of mind.
The difference between either while purposed for bolting down a transformer would probably be minimal at best anyhow imho. Instead I'd focus most of the efforts on good quality graumets intended for the specific job. Keep it simple and quiet.
Dynamat would do the bulk of silencing however. Were replacing the sound dedener on our classic muscle car so hearing the stereo becomes an option. Exhausting 800hp gets too loud hear ppl talk, or yell for that matter. DM works well in cases too put your trust in it to try.
Even as a stand alone tweek it can really improve harmonics by keeping vibrations out that are created by slamming speakers. The difference can be quite noticeable, the more sensitive and susceptible the piece of audio gear is.
The difference between either while purposed for bolting down a transformer would probably be minimal at best anyhow imho. Instead I'd focus most of the efforts on good quality graumets intended for the specific job. Keep it simple and quiet.
Dynamat would do the bulk of silencing however. Were replacing the sound dedener on our classic muscle car so hearing the stereo becomes an option. Exhausting 800hp gets too loud hear ppl talk, or yell for that matter. DM works well in cases too put your trust in it to try.
Even as a stand alone tweek it can really improve harmonics by keeping vibrations out that are created by slamming speakers. The difference can be quite noticeable, the more sensitive and susceptible the piece of audio gear is.
So, let's go with a more serious approach. When solving a problem such as vibration, it is important to keep on track as far as focusing on that problem, and not trying compare apples to oranges. There are so many variables being put into a conversation that can actually lead away from the solution. My lawn mower and my washing machine both have vibration and could possibly be compared with each better than trying to compare them to a transformer in a steel chassis. Exaggeration intended. If the transformer is coupled directly to the chassis through means of most connectors, vibration is going to follow. If I were a manufacturer, I would do the exact same thing as they do since the mass of the transformer must be held snugly to the chassis for shipping. No argument there. If for some reason the transformer is making its own mechanical hum, then isolation may be the best bet for containing it. It will depend on the amount of vibration, and the frequency of the vibration (yes, 60 cycles per second most likely) that needs to be controlled. Isolation first and -absorption-after and away from the chassis, will yield what we want to accomplish. Some care might be needed to allow the transformer to dissipate heat as well, so too much absorbing material will have to be avoided.
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It looks like some builders like Accuphase and others used an isolation covering cap. The only ones I see online are at ali I can not vouch for them. They are basic stamped metal. At least I would treat it. Or pull one off of a donor amp or roll up some steel and make one myself.
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Look at the damping units used to mount compressors in air conditioners, they work well enough.
A well made transformer, and properly rated, should not hum so much as to need treatment.
Also, bear in mind the transformer will heat cycle. So whatever damping material is used, must bear the variation.
I agree, this seems a bit OCD, but if you look at the cable threads, it takes all sorts of people, who are convinced they are right, and everybody else is wrong, in their beliefs about cables, etc...
Come to that, we have not had one lately, the whacked out cable thread I mean.
Or the extreme capacitor ones...
A well made transformer, and properly rated, should not hum so much as to need treatment.
Also, bear in mind the transformer will heat cycle. So whatever damping material is used, must bear the variation.
I agree, this seems a bit OCD, but if you look at the cable threads, it takes all sorts of people, who are convinced they are right, and everybody else is wrong, in their beliefs about cables, etc...
Come to that, we have not had one lately, the whacked out cable thread I mean.
Or the extreme capacitor ones...
Someone is running a portable AC that drones through the beams. Its audible until you turn your head an inch, or step twice to right. Its very intermittent. I bet the parts you mentioned are missing from bottom mount points!!
Nothing is worse than any kinds of electric droning.
, in the early AM when everything else is dead silent.
Nothing is worse than any kinds of electric droning.
, in the early AM when everything else is dead silent.
I found the damping pad again. But I can also buy 1cm soft rubber by the meter myself and cut pads out of it.
http://www.hifizubehoer24.de/epages/61644966.mobile/de_AT/?ObjectPath=/Shops/61644966/Products/%22Gummischeiben%2010mm%22
http://www.hifizubehoer24.de/epages/61644966.mobile/de_AT/?ObjectPath=/Shops/61644966/Products/%22Gummischeiben%2010mm%22
The thing is the metal screw might be causing the transformer to vibrate to begin with...
Could be but then I would place more blame on the rubbers and whatever there issue is, dried out or too soft to start with. Allowing the screws to carry the load. Of course it will easily transfer that energy.
My money is still on the rubbers.
My money is still on the rubbers.
I like the rubber platemounts. Available for small money and in many sizes and loadings
https://www.sdp-si.com/PDFS/Rubber-Platemounts-Inch.pdf
https://www.sdp-si.com/PDFS/Rubber-Platemounts-Inch.pdf