5 hz bass @ 125 db in room - Page 8 - diyAudio
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Old 2nd December 2012, 08:39 PM   #71
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Anything ever come of this?
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Old 18th February 2013, 09:51 AM   #72
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Maybe that one here fulllfill your desires for deepdeepdeep Bass!!! :-)

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Old 18th February 2013, 03:36 PM   #73
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Hey, basically I took the advice of someone earlier in the thread and build a box I could physically fit in, walls were 4 inches thick and braced so I could still fit in, then I faced three 18 inch drivers (fi q) inwards so it was an IB facing into a 70cb ft box. then I fitted some cheap bookshelves (athena B2) as front left right speakers, hooked it all up and played it. The bass was insane couldn't turn it all the way up, would be an awesome experience if it was ever done in a club, it just takes your breath away and leaves you speechless.

Cost around 1000 in the end all in and I kept the Fi Q's for 3 subwoofers for a home theater where they sound great.

How could this be done in a club? 5 hz horn even possible?
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Old 18th February 2013, 04:38 PM   #74
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Running123, a true 5Hz horn would need to have a circumpherence of around 70 meters (one wave length), so it is possible, but not very practical
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Old 18th February 2013, 07:28 PM   #75
18Hurts is offline 18Hurts  United States
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With enough wood, spaces, speakers and amps--it is possible.

Problem with infrasonic frequencies is they tend to resonate things, the building can and will fail and that much power tends to do bad things.

The 7 Hz wavelength has a cool effect, it will kill you and destroy buildings. The French played around with that from the 50's to the 70's and had a good time. The earth didn't much care for that, it created tremors which were picked up miles away--hard to be stealthy when the ground shifts.

For club use, even if you decide to rock the latest in pipe organ dubstep, I'd leave the infrasonic frequencies, the 15 Hz and below stuff alone since it is a public place. 17 and 18 Hz have magical properties to create panic, paranoia and fear at 105dB levels--be careful what you wish for! Don't want to make a special mix with those frequencies that create resonating eye balls (the patrons will see shapes etc) throw in a bit of paranoia frequency so they are on edge anyway--then mix it with alcohol or other entertaining things.

For public use--I'd high pass at 20Hz with a steep filter to prevent any infrasonic weirdness for some folks and prevent breaking the physical building.

Be careful out there!
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Old 19th February 2013, 10:48 PM   #76
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Heard the resonant frequency of the clitoris is around 33hz... how loud realistically would you need to get a response just from a sine wave at the right frequency.

Though it may be pretty easy to create an algorithm that simultaneously plays a sine wave from 37-29 hz ish with every drum beat. NO idea what it would sound like...but a room full people experiencing alternate dramatic fear from infrasonics and women getting randomly horny could make an interesting clubbing experience....
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Old 20th February 2013, 12:00 AM   #77
NEO Dan is offline NEO Dan  United States
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Originally Posted by running123 View Post
One time at Band Camp...
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Old 21st February 2013, 12:21 AM   #78
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It certainly can be done. This is the in room response in my room with half the 18" drivers playing. Getting close to max excursion (did not want to push it any farther, just so I could measure it)

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Old 22nd February 2013, 12:39 AM   #79
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Originally Posted by JapanDave View Post
This is the in room response in my room with half the 18" drivers playing. Getting close to max excursion (did not want to push it any farther, just so I could measure it)
Dave,

By max excursion, did you mean Xmax, or Xmech ?
Where was the mic placed in relation to the speakers, and at what distance?

Art
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Old 22nd February 2013, 06:46 PM   #80
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Dave.let me add another question to the one before from Art. What kind of drivers you do talk about and how much do you use of that 18" drivers? Maybe also the kind of installationis also interesting!
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