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Bright Star Air Mass II

This is embarrassing, but I bought a used BS Air Mass II to use under my turntable which arrived without a manual -- I know, I probably should not need a manual, but I'm obviously doing something incorrectly. I placed my turnatable (Notiningham Interspace) on the Air Mass, and pumped it up -- it did not rise up evenly and the turntable rocks back-and-forth. Too much air I assume, but at no time in the inflating process did the Air Mass level off. So obviously I need help (I know, in more ways than one); any thoughts would be appreciated -- please be kind, at least to my face. Thanks.
vtl
driver's avatar
driver
750 posts
 
Air it up until the base just lifts up, then position the TT on it as to center it, so the clearance between your shelf & Air Mass is even all the way around.

I have a CDP set on a Big Rock 3 which sits on an Air Mass 3 and there's about 1/8" clearance between the bottom of the Air Mass & the shelf.
bright_star_audio
179 posts
 
Hi Vtl,

You have an older Bright Star Audio Air Mass 2 pneumatic mount. That model is no longer in production.

That model relied on gravity to achieve absolute level. For most components that is not an issue. In your case, your turntable has an off-center load weight because the motor and platter are not in the physical center of the chassis. You can easily compensate for this when setting up your Air Mass 2 by adding some extra weight between the component and the Air Mass as required to achieve a level surface.

I have emailed a copy of the owners manual to you. Please let me know if you have any other questions.

Best Regards,

Barry Kohan
President

Disclaimer: I am a manufacturer of vibration control products.
bright_star_audio
179 posts
 
Driver is correct. A 1/8" clearance indicates the correct amount of inflation.

Best,

Barry Kohan
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