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Spikes versus wall coupling

I have a Polk SRS-SDA 2.3 speakers. They are 185 lbs each and currently sit on thier furniture glides on a maple floor, over subfloor, over trusses. No carpet. They have a passive radiator for lowest base at the bottom of the cabinet, and I roll to a subwoofer at 60HZ. I like to move them occasionally so have been reluctant to use spikes.

My question is what am I really missing sound wise? And would wall coupling do as well as spikes. I can put them on some marble slabs,as another alternative, or remove the glides and have the bottom fully sit on the floor, o rthe marble. I do not have a turntable. Or should I spike them despite the hassle?
gammajo
bright_star_audio
179 posts
 
Hi Tom,

Tom asks: "Are there no losses in conversion?"

Converting to what?

If you are asking about the conversion from mechanical energy to thermal energy in the vibration control system I described the answer is yes, there is a great deal of loss which is the objective.

"If you let it vibrate, like it will do anyway, no matter what and you provide a efficient path way for vibration to exit would there not be be less loss than high mass dampening?"

You are right. There is LESS loss of mechanical energy when coupling is employed. What we want is MORE loss of energy so that it will have less effect on the signal that is flowing thorough the component.

"Some coupling devices have a geometric bandpass at 4hz and below to reject the incoming at the point tip"

Which coupling products manufactured for audio systems have resonant frequency and bandpass at 4Hz and below? Are there measurements to show this?

Please let me know if I had understood your questions correctly.

Best Regards,

Barry
twl
3,251 posts
 
So this must be why when someone runs next to me on the beach, I can feel his pounding footsteps in the sand under me.
newbee
4,093 posts
 
TWL, Maybe its because the sand is wet? Did you consider that. Your friend should loose some weight, for his health sake, if nothing else. :-)

BTW when you and Tom are asking these kind of questions and/or making observations about a competitors products, don't you think it would be fair for you and Tom to once again identify for the uninitiated who your employer is and/or what products you sell?
twl
3,251 posts
 
Ok, I'm an employee of Starsound Technologies, and I asked the question about the sand.

Actually, I felt that I was being remarkably silent, considering all that was being stated here.

Truthfully, the reason why I was(and still am) at a loss for words here, is that I wouldn't even know where to start addressing all of the things mentioned on this thread, except to say that I'm not in agreement with hardly any of them.

I'm just letting the guy say what he wants to say.
theaudiotweak
1,793 posts
 
I work for myself and for my clients. I sell products that I own myself, some of them are sourced from Starsound.Tom
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