Hey guys, test your subs out...

[Excelsior]

Originally posted by: MS Dawn
For the folks that say you cannot hear below 20 Hz you are sadly mistaken.

I've been given demos where 3 Hz is audible. Imagine riding a motorcycle at 150mph three inches away from telephony poles. (not that I would ask anyone to try that) - it's amazing.

There is a pipe organ in France with a 64 foot pipe that resonates at 8 Hz and that is very audible. It's more of a feeling than a sound. Ditto for armature elements moving inside of your ear at single digit frequencies.

Higher resolution (96k 24bit) will not produce the bass any cleaner.

I can make a sweep from DC to any frequency you like at any speed you want. It will have your speakers for lunch if abused though.

You disagreed, then you backed me up.

"It's more of a feeling than a sound. "

 

[bunnyfubbles]

Originally posted by: tailes151
Isn't that from the batman begins soundtrack?

yeah, there's a lot of batman begins stuff in this

 

[RichUK]

Sounds just fine through the head phones i'm using on my laptop.

 

[Rubycon]

Originally posted by: Excelsior

You disagreed, then you backed me up.

"It's more of a feeling than a sound. "

Well that's just it - in a cathedral or wide open space you feel the air shaking profusely around you and feel the compression on your eardrums.

Now with IEM's the tide really changes. It's uncanny as the bass is in your head and you feel the pressure inside the ear canal but no shaking outside. At high spls - over 160 dB at 5 Hz, your skin starts shaking like hanging out the window going down the road at 75. It also causes nausea. (space shuttle discovery launch at port canaveral was over 140 dB in the singles. I have a recording of it where you hear the waves lapping at the shore. Very relaxing until those wavefronts come chugging in.)

So yes in a nutshell one can hear those sounds. Few speakers can genuinely produce 20Hz let alone two octaves below that. Most rap is around 60Hz and techno 40Hz. Both frequencies at high volumes can re-arrange pictures on the wall and break stuff.

What's even more uncanny is when you've been playing around with signal generators producing really low frequencies 20 Hz sounds like 50 or 60!

Nice music, bigger than life

Discovery launch - that will shake ya!

 

[JEDIYoda]

*sigh* MS Dawn must have putzy speakers if she thinks these even come close to seriously taxing a system.....my subwoffer is still laughing and the supposed low notes...rofl

Then my home entertainment speakers were *yawning* at thiose clips....rofl...

http://www.alteclansing.com/legacy/ *yawn*

 

[Rubycon]

LOL

Edit:

If you really have Voice of the Theatre systems you're most likely very mismatched. The 525 compression driver needs serious phase alignment as well as impedance matching to work with consumer audio. It sounds nice when set up properly with a valve amp obviously.

The bass bin driver - horn loaded and very efficient rolls off sharply below 44 Hz and has an unusual front (dust cap) vented arrangement. It's also a 16 ohm speaker so it takes a very high voltage (read non home) amp to drive to high levels.

 

[Suspicious-Teach8788]

Originally posted by: Goosemaster

Originally posted by: DLeRium
Weak. My Z2300s took that on easily. I say get a better source file even..

no way in hell

What are you talking about. This was nothing for my sub.

 

[Rubycon]

Ok so this thread was for people to test their subwoofers out, right? I figured I'd contribute with some music that's a treat to the ears AND will also demonstrate that a good, properly aligned subwoofer system can benefit the listener's experience.

Ok so people just want to make their woofers scream like polythene pam's flatulence, make their ports whistle a note that would make Mister Thiel run for the hills. Yes this is a computer forum and computer junkies do that to their microprocessors with prime 95.

So here you are - Prime95 for your subwoofer. Go load up those gaps with AS5 cause that pole piece is gonna get hotter than the hood of a black chevy sitting in the miami sun in july. If your bass bin sheds a tear of fiberglass or foam don't cry to me. :laugh:

 

[Howard]

Originally posted by: MS Dawn
LOL

Edit:

If you really have Voice of the Theatre systems you're most likely very mismatched. The 525 compression driver needs serious phase alignment as well as impedance matching to work with consumer audio. It sounds nice when set up properly with a valve amp obviously.

The bass bin driver - horn loaded and very efficient rolls off sharply below 44 Hz and has an unusual front (dust cap) vented arrangement. It's also a 16 ohm speaker so it takes a very high voltage (read non home) amp to drive to high levels.

I'll bet you a dollar nobody on this forum owns VOTT speakers. I will, however, agree that you can hear below 20Hz, it's just that you need a very high SPL in order to do so.

IEMs might be able to do 6Hz. The distance between the diaphragm and your eardrum is very small, and there's a hell of a lot of "room" gain.

 

[Excelsior]

Originally posted by: MS Dawn

Originally posted by: Excelsior

You disagreed, then you backed me up.

"It's more of a feeling than a sound. "

Well that's just it - in a cathedral or wide open space you feel the air shaking profusely around you and feel the compression on your eardrums.

Now with IEM's the tide really changes. It's uncanny as the bass is in your head and you feel the pressure inside the ear canal but no shaking outside. At high spls - over 160 dB at 5 Hz, your skin starts shaking like hanging out the window going down the road at 75. It also causes nausea. (space shuttle discovery launch at port canaveral was over 140 dB in the singles. I have a recording of it where you hear the waves lapping at the shore. Very relaxing until those wavefronts come chugging in.)

Few speakers can genuinely produce 20Hz let alone two octaves below that. Most rap is around 60Hz and techno 40Hz. Both frequencies at high volumes can re-arrange pictures on the wall and break stuff.

What's even more uncanny is when you've been playing around with signal generators producing really low frequencies 20 Hz sounds like 50 or 60!

Nice music, bigger than life

Discovery launch - that will shake ya!

Like I said, most people can't hear below 20Hz. A very small number can hear a bit below (16-17Hz).

Feeling, as you know, is not the same as hearing. So "So yes in a nutshell one can hear those sounds." is not correct. Sorry.

 

[OdiN]

A better song would be Crimson Tide's Soundtrack - Roll Tide

 

[Excelsior]

Originally posted by: Howard

Originally posted by: MS Dawn
LOL

Edit:

If you really have Voice of the Theatre systems you're most likely very mismatched. The 525 compression driver needs serious phase alignment as well as impedance matching to work with consumer audio. It sounds nice when set up properly with a valve amp obviously.

The bass bin driver - horn loaded and very efficient rolls off sharply below 44 Hz and has an unusual front (dust cap) vented arrangement. It's also a 16 ohm speaker so it takes a very high voltage (read non home) amp to drive to high levels.

I'll bet you a dollar nobody on this forum owns VOTT speakers. I will, however, agree that you can hear below 20Hz, it's just that you need a very high SPL in order to do so.

IEMs might be able to do 6Hz. The distance between the diaphragm and your eardrum is very small, and there's a hell of a lot of "room" gain.

Do you two know something that science does not? Please enlighten the world.

http://hypertextbook.com/facts/2003/ChrisDAmbrose.shtml

 

[Dr. Detroit]

Marked for later,

will have to see how my Mirage S12 and JBL E50's like it.

 

[Rubycon]

Haha the system has to reproduce it to hear it first.

Most people cannot. (play it back) When the wind blows a certain direction and we're moving slightly perpendicular a resonance will set up around the the pool deck and the overhang. It's a chugging sound and its frequency is around 6Hz. It can be so intense that you can go "ahhhh" and you can hear your own voice fluttering in and out. Most people will make a remark - what is that? Yes the ears perceive it as pressure. Infrasonics in *some* recordings can make the reproduction of the appearance more realistic. Most of the time they waste precious amp power and speaker excursion UNLESS a specific system was built for this effect - important in movies!

Of course I'm a musican and thus biased.

EDIT: I don't care what those sites say - I can hear this stuff. I also have a thorough exam annually by an audiologist and have very good hearing for my age. I value my hearing and thus am very careful around continuous, loud sounds and wear protection at all times. My UE-10 pros are a godsend as they provide superior isolation while allowing me to hear myself on the stage.

 

[Excelsior]

Originally posted by: MS Dawn
Haha the system has to reproduce it to hear it first.

Most people cannot. (play it back) When the wind blows a certain direction and we're moving slightly perpendicular a resonance will set up around the the pool deck and the overhang. It's a chugging sound and its frequency is around 6Hz. It can be so intense that you can go "ahhhh" and you can hear your own voice fluttering in and out. Most people will make a remark - what is that? Yes the ears perceive it as pressure. Infrasonics in *some* recordings can make the reproduction of the appearance more realistic. Most of the time they waste precious amp power and speaker excursion UNLESS a specific system was built for this effect - important in movies!

Of course I'm a musican and thus biased.

Look, I am a musician too, but you are basically disregarding all known data on hearing.

Thats what I don't understand.

 

[Excelsior]

EDIT: I don't care what those sites say - I can hear this stuff. I also have a thorough exam annually by an audiologist and have very good hearing for my age. I value my hearing and thus am very careful around continuous, loud sounds and wear protection at all times. My UE-10 pros are a godsend as they provide superior isolation while allowing me to hear myself on the stage.

Believe what you want. If you think you are hearing well below 20Hz, then that is all that matters. Just know that you are a very special person for doing so. Maybe one out of over 6 Billion even.

 

[Rubycon]

Well I know what I'm hearing.

And yes Howard is right, if you sweep from say 100 down to 20 and keep the amplitude the same (and let's assume you have a perfect speaker and anechoic room) 20Hz will sound much softer than 100. Yes I can hear those low frequencies but they're obviously much louder than consumer speakers can produce.

Take that 3Hz example from before. If the operator moved the multiplier up to 1000 and there was a 3kHz tone at the same volume we'd probably go totally ape-crazy and all the light bulbs would break.

Originally posted by: Excelsior


Believe what you want. If you think you are hearing well below 20Hz, then that is all that matters. Just know that you are a very special person for doing so. Maybe one out of over 6 Billion even.

The person that showed me this (the ultimate bass pig) aside from scaring the bejesus out of me - can hear it too. But he is an absolutely insane overcooked duck. :laugh:

 

[Excelsior]

Shoot, I think you should use your wonderful talent to the prove the world and everyone in the audio industry wrong.

You know?

 

[Howard]

Originally posted by: Excelsior

Originally posted by: Howard

Originally posted by: MS Dawn
LOL

Edit:

If you really have Voice of the Theatre systems you're most likely very mismatched. The 525 compression driver needs serious phase alignment as well as impedance matching to work with consumer audio. It sounds nice when set up properly with a valve amp obviously.

The bass bin driver - horn loaded and very efficient rolls off sharply below 44 Hz and has an unusual front (dust cap) vented arrangement. It's also a 16 ohm speaker so it takes a very high voltage (read non home) amp to drive to high levels.

I'll bet you a dollar nobody on this forum owns VOTT speakers. I will, however, agree that you can hear below 20Hz, it's just that you need a very high SPL in order to do so.

IEMs might be able to do 6Hz. The distance between the diaphragm and your eardrum is very small, and there's a hell of a lot of "room" gain.

Do you two know something that science does not? Please enlighten the world.

http://hypertextbook.com/facts/2003/ChrisDAmbrose.shtml

What exactly is the scientific explanation for the 20-20 000Hz brick wall human bandpass? If you've figured it out, I'm sure there are hundreds of people who can digitize such an analog filter and make megabucks for such a useful tool (the brick wall filter).

 

[Howard]

Originally posted by: MS Dawn
Well I know what I'm hearing.

And yes Howard is right, if you sweep from say 100 down to 20 and keep the amplitude the same (and let's assume you have a perfect speaker and anechoic room) 20Hz will sound much softer than 100. Yes I can hear those low frequencies but they're obviously much louder than consumer speakers can produce.

I would use another word instead of "amplitude", because that's too much like excursion, and we all know excursion must quadruple for each octave down to maintain the same SPL. Otherwise, of course 20Hz will sound much softer.

 

[Excelsior]

Originally posted by: Howard

Originally posted by: Excelsior

Originally posted by: Howard

Originally posted by: MS Dawn
LOL

Edit:

If you really have Voice of the Theatre systems you're most likely very mismatched. The 525 compression driver needs serious phase alignment as well as impedance matching to work with consumer audio. It sounds nice when set up properly with a valve amp obviously.

The bass bin driver - horn loaded and very efficient rolls off sharply below 44 Hz and has an unusual front (dust cap) vented arrangement. It's also a 16 ohm speaker so it takes a very high voltage (read non home) amp to drive to high levels.

I'll bet you a dollar nobody on this forum owns VOTT speakers. I will, however, agree that you can hear below 20Hz, it's just that you need a very high SPL in order to do so.

IEMs might be able to do 6Hz. The distance between the diaphragm and your eardrum is very small, and there's a hell of a lot of "room" gain.

Do you two know something that science does not? Please enlighten the world.

http://hypertextbook.com/facts/2003/ChrisDAmbrose.shtml

What exactly is the scientific explanation for the 20-20 000Hz brick wall human bandpass?

For very low frequencies (below 20Hz), the pressure waves propagate along the complete route of the cochlea - up scala vestibuli, around helicotrema and down scala tympani to the round window. Frequencies this low do not activate the organ of Corti and are below the threshold for hearing. Higher frequencies do not propagate to the helicotrema but are transmitted through the endolymph in the cochlea duct to the perilymph in the scala tympani.

http://en.wikipedia.org/wiki/Cochlea

 

[Rubycon]

Originally posted by: Howard

I would use another word instead of "amplitude", because that's too much like excursion, and we all know excursion must quadruple for each octave down to maintain the same SPL. Otherwise, of course 20Hz will sound much softer.

Well we're dealing with sine waves in a sense coming from the generator so that's legit. What happens downstream of the amp is completely different and most often downhill as for keeping shape of the original signal.

Originally posted by: Excelsior
Shoot, I think you should use your wonderful talent to the prove the world and everyone in the audio industry wrong.

You know?

No I don't know actually, and I'm quite happy with what I do.

My talent is singing and talking to people. This kind of stuff scares people - it sure as hell scared me.

 

[Howard]

Originally posted by: Excelsior

Originally posted by: Howard

Originally posted by: Excelsior

Originally posted by: Howard

Originally posted by: MS Dawn
LOL

Edit:

If you really have Voice of the Theatre systems you're most likely very mismatched. The 525 compression driver needs serious phase alignment as well as impedance matching to work with consumer audio. It sounds nice when set up properly with a valve amp obviously.

The bass bin driver - horn loaded and very efficient rolls off sharply below 44 Hz and has an unusual front (dust cap) vented arrangement. It's also a 16 ohm speaker so it takes a very high voltage (read non home) amp to drive to high levels.

I'll bet you a dollar nobody on this forum owns VOTT speakers. I will, however, agree that you can hear below 20Hz, it's just that you need a very high SPL in order to do so.

IEMs might be able to do 6Hz. The distance between the diaphragm and your eardrum is very small, and there's a hell of a lot of "room" gain.

Do you two know something that science does not? Please enlighten the world.

http://hypertextbook.com/facts/2003/ChrisDAmbrose.shtml

What exactly is the scientific explanation for the 20-20 000Hz brick wall human bandpass?

For very low frequencies (below 20Hz), the pressure waves propagate along the complete route of the cochlea - up scala vestibuli, around helicotrema and down scala tympani to the round window. Frequencies this low do not activate the organ of Corti and are below the threshold for hearing. Higher frequencies do not propagate to the helicotrema but are transmitted through the endolymph in the cochlea duct to the perilymph in the scala tympani.

http://en.wikipedia.org/wiki/Cochlea

"Below 20Hz" is not very precise. Is there a discontinuity to the left of these functions?

http://www.silcom.com/~aludwig/images/Fletcher-Munson.jpg

 

[Goosemaster]

those clips were insane.....


my sub's suspension hates you

 

[Rubycon]

Originally posted by: Goosemaster
those clips were insane.....


my sub's suspension hates you

Like an F150 bouncing down the road with its bed filled to the rim with galena.

:laugh: