Quiz about adding dense mass to a vibration isolation application!
There are two steps in this quiz:
1) Hypothetically, you have a DAC that is very solidly built on all sides and weighs 25 lbs.
This DAC currently has three Nobsound vibration isolation devices under it, the springs of which are about 50% compacted and are damped by foam ear plugs inserted inside of them. The vibration isolation effect with this setup is merely middling according to a cell phone seismograph app.
2) You add a 25 lb granite slab to the top of the DAC with a 1/8-inch rubber mat between it and the DAC, and then add the appropriate number of ear plug foam damped springs to each Nobsound device in order to get all Nobsound device springs back to about 50% compacted.
The question: What do you think is the sonic result of step 2?
@gladmo , I have a system in a former basement bedroom and I had an intermittent hum/buzz. I made some blocks out of 2x4’s and made some trial risers for my speaker wires. The noise immediately went away. I have a second system in my family room on the main level. I added some block and I couldn’t hear any difference. But then I had no noise whatsoever to begin with. I guess what I’m saying is not every system needs risers. All the best. JD |
