Date: Fri, 3 Dec 2004 08:37:24 -0500

Author: Wolfgang Rueckner

Subject: Re: stories

Post:

We use a JBL Professional Series model 2482 without the horn. You can
check out more details in Am J Phys 61(2), 184-186 (1993).
-- Wolfgang


On Dec 2, 2004, at 5:37 PM, Michael Timmins wrote:

> May I ask what kind of speaker you use? We've always used a PA driver
> and these tend to start dropping off dramatically at 500 Hz or so.
>
> Miek
>
> On Thu, 2004-12-02 at 16:54, Wolfgang Rueckner wrote:
>> Oh yes, a variable frequency generator IS mandatory. The reason I
>> look
>> for wineglasses in a certain range (400 to 500Hz) is because my
>> loudspeaker happens to work best in that range and requires the least
>> amount of input power to produce a lot of decibels. -- Wolfgang
>>
>>
>> On Dec 2, 2004, at 3:28 PM, Gordon Shepherd wrote:
>>
>>> Can you really get the frequencies close enough to do the job by just
>>> matching them? I thought a variable frequency generator would be
>>> mandatory to match the freq's exactly enough to work. You can tell I
>>> haven't don it yet.
>>> Gordon Shepherd
>>>
>>> Wolfgang Rueckner wrote:
>>>
>>>> I buy my wineglasses at the local Crate & Barrel. I hand pick them
>>>> by
>>>> comparing their ring with a tuning fork. Having selected a half
>>>> dozen, I brought them up to the register whereupon the young
>>>> saleslady asked me "why the tuning fork?" I explained that I was
>>>> going to shatter them with sound and wanted glasses in the right
>>>> frequency range. She said that was totally awesome and invited me to
>>>> come to a party she was having that evening and bring my shattering
>>>> wineglass set-up. She thought it would be the hit of the party! --
>>>> Wolfgang
>>>>
>>>>
>>>> On Dec 2, 2004, at 8:56 AM, Cliff Bettis wrote:
>>>>
>>>> Mine, shopping story that is, would be walking into an antique
>>>> store with a Geiger counter.
>>>> Cliff
>>>>
>>>>
>>>
> --
> Mike Timmins
> University of Virginia
> Acadamic Support Supervisor
>
> email: mat3q@virginia.edu
> phone: (434) 924-6800
> mail address:
> 382 McCormick Rd
> Charlottesville, VA 22904
>
From rueckner@fas.harvard.edu Fri Dec 3 08:52:50 2004

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