Silicone isolation is best for turntable feet. Sorbathane is also great for a mat, or inside the plinth. Pointed speaker feet, and a heavy component shelf/furniture too.
Silicone isolation is best for turntable feet. Sorbathane is also great for a mat, or inside the plinth. Pointed speaker feet, and a heavy component shelf/furniture too.
In most cases, the best (
and free!) ways to control acoustic feedback issues with turntables is proper placement of components.
What people seem to not realize is that some of those products you mentioned are just band-aids to the problem, and as kenwashesmonday mentioned, are Snake Oil.
And so, Mike, with all due respect, some of your posts in this thread concerning turntables and audio products show me that you're prone to believing that some products are worthy, which in reality, they are not.
The old saying applies: "Don't believe everything you read on the internet".
Reading those postings of other websites like HIFI Engine, Vinyl Engine, and AudioKarma, among others, is sometimes amusing with their endless babbling about how to improve or correct an issue.
For instance, you mentioned those "pointed speaker feet", which are also used underneath turntable plinths/bases.
The claims for those "spikes" are marketing nonsense, and do nothing to correct a turntable or speaker feedback problem, but they do contribute to the seller's income from uninformed customers.
And how could they? - All they do is raise whatever they're under, perhaps giving it a "sexy Hi-Tech appearance".
You have to understand Physics, and the properties of how sound travels through the AIR, walls, and floorboards.
Indeed, sound can potentially "vibrate" anything nearby, and the closer the speakers are, along with increasing the sound intensity levels, nothing..... nothing is safe from being affected by high-level heavy bass.
Those "spikes" are metal, and putting them on a speaker isn't going to do shit to eliminate or suppress what travels though the AIR from a speaker, or eliminating vibrations from reaching the floor.
And even the "fancy" spikes with cushioning are worthless investments.
My next door neighbor's system, while being nice expensive components, is flawed by the way he insists how it is arranged.
He's another one who's been "educated" by internet babble.
Those massive Acoustic Research speakers are practically kissing both sides of that expensive "high end" component rack between them.
So even with "pads" under the Dual 701 turntable, he cannot turn the volume up past a reasonable amount, because those 12 inch woofers transmit vibrations right through the floor and air, causing feedback issues.
I've told him to seperate the speakers away from the turntable/rack, yet he refuses to listen. - I've had plenty of "stubborn" people that think they know better than me.
I've even taken over a custom-made Feedback Elimination device that I designed and built, which connects to the preamp he uses.
It supresses any subsonic audio under 27 Hz, which is the prime area where feedback is generated. - And besides, there's really nothing of subsonic value worth listening to in music, and doesn't affect the rest of the audio spectrum at all.
In addition, since that annoying sub-bass also robs power from the amplier, and causes woofer cones to flap and flex in extreme ways, that is also canceled out by my device.
He heard the amazing results, and was able to turn the volume up to window-rattling levels, without a hint of feedback, or the dangerous flapping of those woofers.
Yet, he was not interested in having me make him one!
In a way, it's good for me, since I'm not bothered by bass booming though the wall in my home.
Listen, I've not only been an experienced professional repair shop technician, I've also had education and experience in audio product design and implimentation.
And I've done audio and video installations for customers homes as well.
I know the reality's and solutions way before the internet was born, with its propaganda, influences, and nonsense.