2" Dia Sorbothane Hemisphere Rubber Bumper Non-Skid Feet with Adhesive (4, 70 Duro)

I have spent a lot of time with sorbothane both footers and stick-on pieces and I find that these footers are the best Sorb footers I have encountered. These are used for two different but related uses. Some are used under things like turntables to eliminate feedback from speakers through floors into the shelves and the turntable. If you have this problem, and some kinds of flooring are worse than others. We recently removed the carpet from our cement floors and installed ceramic floor tiles. Suddenly the peformance of a CD player deteriorated markedly. I used some old sorbothane footers and the problem went away. The other use which is less well understood in the US at least ( some British manufacturers seem quite up on it) is microphonics, i.e. the effect of vibrations from things like motors (in ttables and cd players) platters in ttables, transformers and possibly even AC cycling on the operation of circuits. Naim, a respected British hi-fi source is worth looking up for its discussions of these problems. Their stuff is good but expensive. Rather than buying new equipment I am retrofitting many things, amps, cords, cd players and speakers with sorbothane. I recommend using the heaviest grade of sorbothane, i.e. 70 duro. In fact a technical representative from the Sorbothane company recommended this to me. Adhesive makes sorb work better. The 3M thin double-sided tape used here is fine. However the seller has sent me three batches now without the adhesive and is not responding to my complaints. Since I have the industrial adhesive Lord 7650 that Sorbothane recommends this is not a big problem for me but it would be for others. The Lord adhesive is expensive, somewhat difficult to use and has a short shelf life after opened. I need it more for adding sorb to cases and the like. 70 Duro, 1/4 or 1/2 inch sorb cut into small pieces, (less than 1" on any dimension) is in many ways better than footers and cheaper. Constrained damping, i.e wrapping the top and side of the sorb in 4 layers of electrical tape adds a large level of improvement as well.

The answer is, “I think so”, or maybe I want it to because I spent so much on it to help reduce the vibration and subsequent squeaking of my wood floors when the bass hits.I put these on my 15” subwoofer, and then I have a peice of carpet underneath that. It appears to help with the squeaking for most the bass, but it still squeaks for the consistent low frequency bass. I’m waiting for more to arrive so I can put it on my monitors and house speakers.

I set my turntable up on a large credenza sitting on a wooden floor. The house is old, and unfortunately the floors under the credenza are a little bouncy. That meant even the lightest step in the area of the turntable would cause the record to skip. I did a lot of research on these and other tricks to avoid skipping and frankly was skeptical these would work. A lot of what I read said I would almost certainly need to move the turntable somewhere else or try mounting it directly on the wall. Neither was a good option for me.But, I put four of these under my turntable feet (an Audio Technica 120LP), and it actually worked! They did not eliminate skipping caused by walking very heavily near the turntable, but now I can at least walk normally near and around the turntable while listening to music. The one negative is these things are a sticky, and I read complaints elsewhere about staining furniture over time. I ended up sticking clear rubber bumpers (like the kind you see on the inside of a cabinet door) in between the sorbos and the credenza to protect the finish.

Not really a whole lot to say other than it works and i get clean tight bass. I have a HSU VTF-2 MK4 Subwoofer. I was previously using a Subdude but i never really truly saw any benefits. I still had the carpet spikes whilst using the Subdude but wanted to try something else so i bought these. And they work! They really do help with decoupling the bass frequencies from the sub to the floor. I have would laminate and before the Subdude my sub would slide all over the floor with the carpet spikes. Not with this thing! I can place my sub in a corner now and dont have to worry about the walls rattling. I highly recommend.

My independent laptop cooling fan seized up recently, and rather than purchase another one, I thought I'd try these bumpers as an alternate solution for improved airflow, alternate slanted positioning of the keyboard, and vibration/shock absorption.I installed two of the adhesive backed bumpers to the underside of my laptop, at the back corners, taking care not to block access to the battery compartment nor any area that may facilitate future repair. I found the added height was exactly what I was looking for; providing slight elevation at the back of the laptop, somewhat similar to the back folding feet of a regular computer keyboard, offering a more pleasing and comfortable position for hands and wrists. The bumpers also added some cushion and "give", making typing seem less fatiguing. And, my ultimate goal; the airspace provided by elevating the rear of the computer is enough to reduce or alleviate the "heat problem" associated with laptops placed on flat surfaces. An added bonus is that with the bumpers attached to the laptop, transporting it is a lot less cumbersome since I no longer have to tote around a separate slant board, fan or cooling device.Of note: the bumpers are a tad bit "sticky" when first installed (rounded bottoms are slightly "tacky" and may temporarily stick to your table surface), but with one month of continued use, I have found this is no longer an issue. (The manufacturer recommends placing something underneath the bumpers, to protect your desk surface.)All in all, a great solution for some of the "quirks" associated with laptops. Now, what to do with the two remaining 2" bumpers from the package... perhaps I'll reserve them for replacement on my laptop in the event the need arises, or ... maybe install them (and a few of the smaller SORBOTHANE BUMPERS) to my printer to see if they can alleviate some of the noise and jerky vibration associated with that device.

I have used these to raise a glass draining board base high enough to drain into the kitchen sink. The feet stick firmly to the glass and there is good resistance to sliding on the worktop below. There have been no problems over several weeks now. I am happy with the product.

I used these to raise a stage piano keyboard to give clearance for cables and reduce vibrations. Works well, consult the manufacturer website for the recommended loading.

I've been using Sorbothane to isolate my turntable for over 20 years. It's very good, you'll pay a lot more to better it's performance.

Daughter had issues with tenant below here re bass bleed into his apartment. Tried the sorbothane isolators and so far no more complaints from tenant in the apartment below. ( The speakers involved are large monitors weighing approx 150 pounds ea using 15 in woofer in 8 cubic ft enclosure as well as a mid and tweeter horn in a seperate enclosure. The isolators work well and at a cost of approx 25 dollars per speaker they represent good value. I will be buying more to equip to equip my own speakers.

Used these feet to replace the won/mushed out feet on a Mission Isoplat. They fit well, were easy to install and readily available. I am rating them at four stars because I do believe these are at the upper end of the pricing spectrum.