posted
Considering about how much gas comes out of the thing, I would think that a space shuttle launch would be significantly more than 14PSI of pressure at the launch pad.. Considering, ya know, it lifts up the space shuttle...
However, there really isn't a rarefaction portion to the real "pressure" wave, so it would be hard to qualify it in sound wave terms.
ShadowStar
-------------------- You can't build a reputation for what you're GOING to do.. But you can build one for TALKING about it!
It's all about knowledge, love and respect. Posts: 2578 | From: Somewhere In the Northeast | Registered: May 1999
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posted
****, it's very hard to be accurate at 180 dB. 160 is not a huge deal but 180. Even though the space shuttle should just be emitting a huge cloud of gas, it's not perfectly uniform and disturbances(up to 180 dB) will be felt.
Still can't beat an H-bomb. But this one simply measures the initial pressure front and converts PSI to dB.
Posts: 768 | From: Ottawa, On, Canada | Registered: May 2000
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posted
I say forget about the rules, and just get a bus and put as many subs and amps and all that stuff you can fit. Then just slam the he!! out of it. If i had the money i'd do it.
P.S. I am now excepting donations
-------------------- D & E designs 1sub 1amp Soon to come: 6.8" screen in the center consol Posts: 182 | From: H-Town, Tx | Registered: Dec 2002
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Putting a rocket engine in a van, and subwoofers in a van, are two totally different things.
LOL
Maybe for the monster class I will do a space shuttle booster. It does not back off like a conventional subwoofer does.
Anyways, I feel Waynes mics were not very accurate. But, it was due to them being sensitive to certain condtions in different applications.
My Mazda would do a 163db on a 40K dollar meter at GA Tech.It does a 163.1 on a Linear X... But it does a 169 on a 1K dollar Termlab designed by Wayne... Sometimes I wonder if the big numbers are forethought to promote a big number sport...or If it a matter of issues with the mics. I know Audio Controls are the same way, using essentially the same mic....
-------------------- T3 Audio Incorporated >World Class Subwoofer & Speaker & Amplifier Development< Johnathan Demuth
"All our dreams can come true, if we have the courage to pursue them."-- Walt Disney
posted
Watch the movie more carefully, I believe the correct order and correct words are, "Fire and Brimstone raining down from the sky, rivers and seas boiling, 40 years of darkness, earthquakes, Volcanos, the dead rising from the grave, Dogs and cats living together, mass Hysteria."
The movie was Ghostbusters, the first one. The scene takes place while the Ghostbusters are talking to the Mayor of the city at City Hall.
Trust me, I've been watching this movie since I was 5, I can recite every word to the movie, NO LIE!
quote:Originally posted by DmanD: I say forget about the rules, and just get a bus and put as many subs and amps and all that stuff you can fit. Then just slam the he!! out of it. If i had the money i'd do it.
P.S. I am now excepting donations
Richard clark still says he'll guarentee you can do 180dB with his 60" sub in a bus (needsa the big box) reinforced correctly.
and he even mentioned he'd donate the sub to anyone who'd do this...
the only problem I see is it does not meet the requirements of dB drag (must be a retail product)
-------------------- Posts: 128 | From: va beach, va | Registered: Dec 2001
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posted
There's ateam that have designed a new "greener" solid rocket booster for the shuttle. Emits water vapour and CO2. Plus you can actually turn this one off, unlike the current versions. Good for burps then...
-------------------- ----------------------------------- Team Troublestarter (Tea~boy, One lump or two?) Posts: 171 | From: England | Registered: Dec 2000
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posted
i'm tired of waiting! why don't we all join forces and take over the world! i mean beat 194 db. hey, if we double power & surface area enough we can do it. who's with me! there are over 11,000 members on termpro, i know we could do it, it would be like the town that made the worlds largest pizza, we all have one small part to do but we do it to the MAX! then put it together in the end. $1000 from each person is $11 million!
Posts: 119 | From: Marysville Michigan | Registered: Dec 2002
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posted
RC claims the 6 foot sub has already achieved 180 dB, in a brick room as an enclosure.
About the rocket booster, why not mention what the technology is about instead of praising some undiclosed idea. The booster would use paraffin wax, burn cleaner, could be throttleable, and wouls only be slightly larger(about 10%).
I think a good way to break 180 would be to give Alma a winning lottery ticket. Then let history write itself.
Posts: 768 | From: Ottawa, On, Canada | Registered: May 2000
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posted
I apologise about not going into the details on the boosters. I seem to have left my edition of "The New Scientist" at work....
-------------------- ----------------------------------- Team Troublestarter (Tea~boy, One lump or two?) Posts: 171 | From: England | Registered: Dec 2000
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posted
RICHARD CLARK.....LOL I am Johnathan Demuth, and I was part of the 63" subwoofer project back in the day..The vehicle was built by me and Tim Maynor..... It used a mechanical woofer using a crank shaft and a electric engine that basically turns at a set RPM..... which equals 5HZ!!! It was built as payback for almas midget cab the year before.... He was trying to displace 20% volume in the cab...which he said would be over 180db. Too bad 8" thick MDF flexed like paper.... It would have been loud...
Nice of him to volunteer a woofer that MTX paid for.....
It cost a lot of money to build that thing.... I heard rumors of obscene amounts of money in machining....
Maybe I can kick that woofers tail around this season in monster class.
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