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Break a wine glass...

 

Silver Member
Username: Jakeyplaysbass

St. Louis, MO

Post Number: 477
Registered: Jul-05
What hz and how many dB would you need to break a wine glass with the speakers in your car? A guy singing on mythbusters did it with 105dB at 556hz. I really want to see a video of someone doing this with there car speakers.
 

Gold Member
Username: 54danny54

Betsy layne, Kentucky..GO... USA duh

Post Number: 1550
Registered: Nov-04
io wacthed that myth busters...one my fave episodes
 

Silver Member
Username: Jakeyplaysbass

St. Louis, MO

Post Number: 479
Registered: Jul-05
i know it was pretty impressive. how could you do that in your car though? that would be a pretty sweet trick to show off with.
 

Gold Member
Username: 54danny54

Betsy layne, Kentucky..GO... USA duh

Post Number: 1551
Registered: Nov-04
i guess just like get a 556Hz tone made and turn it up till it breaks....try it dude lol
 

Silver Member
Username: Southern_bass

Paris, Tennessee U.S.

Post Number: 946
Registered: Dec-05
that would be so awesome to show that off to your friends lol
 

Gold Member
Username: Tdeaton1021

Near Tampa, Florida USA

Post Number: 1619
Registered: Sep-04
take a cone, and put the larger end to the speaker and the smaller end in front of the glass. this way more of the sound waves will hit the glass....
 

Gold Member
Username: Insearchofbass

Post Number: 4314
Registered: Jun-04
you have to find the resonant frequency of the wine glass i belive that how the glass is shattered
 

Silver Member
Username: Rzarector

Coquitlam, Bc Canada

Post Number: 872
Registered: Dec-04
just put the glass close to the cone and crank it and let it smack the glass and smash it lol
 

Silver Member
Username: Kwrubel21

Shelby Township, MI United States

Post Number: 159
Registered: Dec-05
^^lmao.
 

Silver Member
Username: Jakeyplaysbass

St. Louis, MO

Post Number: 480
Registered: Jul-05
sean how can i find the resonant frequency of the glass without buying any expensive materials?
 

Gold Member
Username: Insearchofbass

Post Number: 4318
Registered: Jun-04
I would imagine if you didnt have a meter you could do it by ear and play test tones until you hear the glass resonante the loudest then turn the volume up 105 db isnt loud but finding test tones that go high enough may be hard
 

Silver Member
Username: B101

Queen City, NC USA

Post Number: 554
Registered: Sep-05
its easy!
use a frquency generator. hook it to the car amp, and generate the tones, while its being amplified real loud. You can even do a sweep with the frequency generator. Thats if the speakers could take it..

As a matter of fact, didnt they use a freq generator on that same episode?

I bealiveve that would be the proper way of lab testing a sub or any speaker also.
 

Silver Member
Username: Jakeyplaysbass

St. Louis, MO

Post Number: 482
Registered: Jul-05
what tones should i start on like 400 and go up by 10s just to get an idea(400,410,420)? then when i find a few that are good go by 2s or 1s? i have a bass CD but it only does 240hz so ill search the net for some tones.
 

Silver Member
Username: B101

Queen City, NC USA

Post Number: 556
Registered: Sep-05
yea, prob a little tighter. 5hz intervals at first.
but guessing, 500-900 can be painfull! But it may very well be way higher like 15K.
I forgot the human voice range.

ohh, I have some tones for you.
yepp, from 5hz - 20,000hz
i messenger: valeboykid@hotmail.com
 

Silver Member
Username: B101

Queen City, NC USA

Post Number: 558
Registered: Sep-05
Jake
http://www.realmofexcursion.com/downloads.htm
you can download the whole ZIP file.
under 2mbs.
Burn it, it comes 0db & -3db ocataves
 

Gold Member
Username: Tdeaton1021

Near Tampa, Florida USA

Post Number: 1624
Registered: Sep-04
also wont reaml of excursion make u a test tone. if u wanted they could make you like a 400-800hz sweep. oh and make sure to videotape this and dont forget the straw ;)
 

Silver Member
Username: B101

Queen City, NC USA

Post Number: 560
Registered: Sep-05
=)
yepp
 

Gold Member
Username: Sploosh56

Ohio

Post Number: 1096
Registered: May-04
video tape it if you break the glass
 

Silver Member
Username: Jakeyplaysbass

St. Louis, MO

Post Number: 483
Registered: Jul-05
i dont think my speakers are loud enough. the glass doesnt do anything and i have it volume 26/30. however at 545hz-560hz it moved a little but it didnt break or even come close to breaking.

if anyone else wants to try it please do. im thinking about trying it with one of my old guitar amps because it gets alot louder than my car so maybe it will have enough dB to crack it at least.
 

Gold Member
Username: 54danny54

Betsy layne, Kentucky..GO... USA duh

Post Number: 1552
Registered: Nov-04
is it crystal glass?
suposed 2 be crystal, and they have a straw in teh middle
u need the straw
 

Silver Member
Username: Jakeyplaysbass

St. Louis, MO

Post Number: 484
Registered: Jul-05
yeah its crystal and the straw moves a little but nothing close to what it does on the show.
 

Gold Member
Username: 54danny54

Betsy layne, Kentucky..GO... USA duh

Post Number: 1555
Registered: Nov-04
do slow sweeps around thaT nieghborhood like from 300-600 Hz, a slow sweep and guestimate what makes it move the most
 

Bronze Member
Username: Awm44444

USA

Post Number: 44
Registered: Jan-06
wut is the difference between 0 db and -3 db? on the realmofexcursion website?
 

Gold Member
Username: Araknid

BOCA , FL U.S.

Post Number: 1536
Registered: Nov-04
http://www.acoustics.salford.ac.uk/acoustics_world/glass/glass.htm

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