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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Because racks aren't best when moving! posted by bartc on July 10, 2005 at 15:45:15:
It doesn't matter if he uses industrial casters, cones, leveling feet, or no feet....the rack is still coupled to the floor. Please do not get audible ringing harmonics based on material confused with isolation. Cones can be used for frequency isolation, but keep in mind the mass load must be of optimum weight. Let me give example....lets look at standard 1" audiopoints. A very popular cone for many years. People describe the added benefit as added upper detail, tight bass, extension, yadda, yadda, yadda. Under 90lbs per 3 people are describing added ringing harmonics generated between the two (chassis and foot) surface materials and mechanical vibration / micro-vibration. At 90lbs you actually experience proper frequency isolation and some vibrational draining. Do your own research, talk to AP they will let you know what the optimum weights are per product size. The same applies for every other coupling foot on the market. In the case of casters he can use EAR C-1002 between the caster and rack to lower the ringing harmonic (I do this successfully with my main audio rig). If he is looking for added dampening then I suggest using a piece of Microsorb between the caster and rack (I use Microsorb inside the components with a sheet of TI Shield for added stiffness and in some cases grounded for RF shielding). All components are supported on Vibrapod / cone combinations.All and all the best isolation foot one can use for a rack is a air isolation foot which is designed for mass loading. The average 15lbs component is a waste of time, but if your rack weighs 300 or 400 pounds plus then I would look into it.
Alan
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Follow Ups
- Re: Because racks aren't best when moving! - audionutge@yahoo.com 22:51:36 07/10/05 (0)
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