Audio hygiene 4: placing equipment 

Excellent Video. I had a hearty laugh when you mentioned coins under the spikes. I had those till about 4 days ago when I replaced the coins with small rectangle wooden blocks under each spike. Sand Box sounds like a good idea, I will try to DIY it. Yes I am married and got a kid. :)

Thanks for mentioning the lock bolts. Never thought of using them before

According to Russ Andews, cone feet aren't trying to filter or decouple anything, they are trying to drain mechanical energy away from the chassis.

Thank you, very useful information as always. I knew some of the stuff you explained but not all. I am surprised that spikes do not reduce vibrations. I thought the idea was that with the minimal contact that the tip of the spikes achieves, the chance for vibration damage is reduced. I have no scientific knowledge about this subject but that theory made sense to me.

Excellent videos! Although I don't fully agree with your view on spikes, Hans. My room with wooden floor resonates on certain bass frequencies, making certain bass notes pop out (seem louder) than others. Spikes help by decoupling the speakers from the floor and it stops the room from resonating on certain freqs.

Dear Hans, another very interesting video, as always. Still, on the subject of audio degradation. A friend of mine has raised a question which I would like to ask you. Have you looked into the detrimental effects (if any) of RF interference on audio equipment when using such items as: Powerline Wi-Fi adaptors and the effect of neon bulbs in mains adaptors? Also, can "SMPS" a switch mode power supply in an amplifier etc have a detrimental effect on other pieces of equipment in the system? Thanking you. Rodney.

Many thanks for all your fantastic videos, and I hope you can answer one question: are bookshelf speakers generally designed to be coupled or decoupled from a stand? I have a pair or B&W DM602 and I’m trying to add mass to stand and couple it through the thin carpet to the floor with spikes, but wouldn’t it then make sense to decouple the speakers from the stands? What would you recommend to someone that basically is trying to keep costs down to as close to zero as possible? Many thanks in advance, and keep up with your great work!!!

According it's a wonder we have Great Music from the past My Age=Some of the finest recording come from 40-50s and there was no or very little isolation especially in the Studio

I have only a wooden cabinet to place my monitors on, how can i reduce vibrations? I have thought about buying two marble plinths for the monitors to sit on. Would this help or do you have another recommendation?

Awsome video once again Hans .absolutly makes sense .will be sending you some money hans once i get my new paypal account open.😊😊

I've been watching your videos for sometime and they are fantastic....i have a question if you are interested in answering it i jave a pair of McIntosh LS350 and there's know spikes on them or anything do you think if i just got a peace of carpet to put under them would it help or do you have a better idea?? I have a emotive xpa 2 gen 3 and I have a audio stand and I put the amp in the stand and it did sound very good but when I place it on floor it seemed to sound much better so I bought a amp stand and when I put it on the amp stand the sound wasn't good but the amp stand has spikes and again im dealing with tile floors!!! Please help if you can with some better ideas THANK YOU FOR YOUR TIME AND INPUT......WHEN YOU DO A VIDEO THERE IS NOT ANOTHER PERSON ON RU-vid WHO EXSPLAINS IT AS Thorough as you do !!!

Hello Hans. Firstly many thanks for the reliable audio-knowledge base. I have a question about the anti-vibrating shelf You talked about at 7:33 of this video. You said: "what will work is a shelf of two planks with a layer of led in between." What do You mean by "led". In translations to polish, i found only a LED- light emitting diode, and it doesn't seem right translation for me. Maybe You misspelled the word "felt"? Do You think a sturdy, inert sheet of rubber, between the wooden planks, will work too? I'll be grateful for your response. Have a good day! Aleksander Kaźmierczak

What brand of lock bolts should I buy??? :)