When we screened my restoration of "Close Encounters of the Third Kind" at
the Academy Theater, the ceiling (air conditioning ducts?) rattled like

My previous studio had suspended ceiling tiles (T-grid) and to my pleasant
surprise, they acted like a very large membrane absorber, which smoothed
out the bass response.  My new studio has the same dimensions, but has a
hard ceiling, and bass is MUCH more of a problem there.


On Mon, Sep 29, 2014 at 6:01 PM, Dave Burnham <[log in to unmask]> wrote:

> Another culprit for noisy vibrating in a sound studio is suspended ceiling
> tiles. When I play the recent Philadelphia SACD of Saint Saens' organ
> symphony, the ceiling visibly dances!
> db
> Sent from my iPhone
> > On Sep 29, 2014, at 8:15 PM, Tom Fine <[log in to unmask]>
> wrote:
> >
> > In the end, I'd put the cabinets in another room! I've fought this
> battle in my own studio. Move enough air with bass content and EVERYTHING
> vibrates. There is no full solution except to work in a room with no
> resonant surfaces, nothing on the surfaces and no metal panels. Luckily,
> very little of what I work with has that much bass content cranked that
> loud.
> >
> > Metal file cabinets are THE WORST rattling/vibrating things, even worse
> than metal equipment racks right in the line of fire. I would never put
> monitor speakers on metal cabinets, although the Recoil Stabilizers will
> probably help better than anything else recommended.
> >
> > Metal file cabinets are so bad that I won't even have them in the room
> with my monitor speakers, except for a 2-drawer that's across the room, is
> full of files (so the drawers need a LOT of energy to vibrate) and has
> heavy stuff on top of it, plus it's not in the direct line of speakers
> air-fire.
> >
> > I guess if I had no other place in the world to put the metal file
> cabinets, I'd hang the speakers off the ceiling and damp the metal file
> cabinets with moving van blankets, and make sure they are full to the brim
> so all of the drawers don't rattle every time a sting bass is plucked.
> >
> > All of this is why professional recording studios put speakers in highly
> damped soffits, and why you need Recoil Stabilizers for near-filed speakers
> on top of the console (or, as in my studio, on top of solid hardwood drawer
> cabinets on either side of the DAW workstation). And even in those cases
> (and in my studio), if the bass content is loud enough, anything not
> battened down (pens on the console, empty reels on tape machines, the
> plastic lid on a Technics turntable) will audibly rattle.
> >
> > -- Tom Fine
> >
> > ----- Original Message ----- From: "John K. Chester" <[log in to unmask]>
> > To: <[log in to unmask]>
> > Sent: Monday, September 29, 2014 7:30 PM
> > Subject: Re: [ARSCLIST] Speaker mount
> >
> >
> >> At 06:52 PM 9/29/2014, Eric Jacobs wrote:
> >>
> >>> Take a look at Sorbathane, which is a both a vibration damper and
> >>> isolator.  Thick 1-inch sheet works very well.  Not cheap, but
> >>> cheaper than moving a wall.
> >>
> >> Sorbothane is good stuff -- it would work very well between a piece of
> butcher block and the top of the cabinet (or better yet, a piece of granite
> countertop).  1/4" would be thick enough for that use.  But I wouldn't want
> to cover the sides of my filing cabinet with sorbothane.  It feels kind of
> slimy, and if a large surface area remains exposed, it's very difficult to
> keep clean. I'd want to glue a piece of wood to the sorbothane.  I think
> the car vibration damping material (which has an aluminum surface) is
> probably good enough, and a lot less trouble to install.
> >>
> >> -- John Chester
> >>

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