i always wonder what is the treshold for feeling bass frequencies (40-80 Hz range) in the cest like vibration or "punch" wich makes nice sensation.. I find a good site wich tell me moething about but it's not very complete with my question!
this is the url: http://www.makeitlouder.com/Decibel Level Chart.txt
It says: At 116 dB(?) HUMAN BODY BEGINS TOPERCEIVE VIBRATION IN THE LOW FREQUENCIES.
But it doesn't explain if it is talking about dBA, dBC or what other kind of pondaration, because from A and C there is a difference of 30 dB at 50 Hz!! So if 116 dB is the right level, what is the ponderation and frequency? Maybe 116 dBC at 80 Hz it's like 130 dBC at 20 Hz... I'd like to know it..
this is the url: http://www.makeitlouder.com/Decibel Level Chart.txt
It says: At 116 dB(?) HUMAN BODY BEGINS TOPERCEIVE VIBRATION IN THE LOW FREQUENCIES.
But it doesn't explain if it is talking about dBA, dBC or what other kind of pondaration, because from A and C there is a difference of 30 dB at 50 Hz!! So if 116 dB is the right level, what is the ponderation and frequency? Maybe 116 dBC at 80 Hz it's like 130 dBC at 20 Hz... I'd like to know it..
there's some psychoacoustic aspect and stuff too - I have a little Karlson type nearby playing a well recorded solo drum CD and even at lower levels there's a sensation of "hit" and power - something like a vortex cannon
Chest pounding bass - with no or minimum distortion or how to "make your stomach move."
https://www.youtube.com/watch?v=phY86SJBy98
4 speakers JBL 4520 ("Scoop" C55), the same you see in the background with 2x15" JBL's (2205?) each speaker and two subs on the floor (that you can't see).
Links:
2205
2225A vs 2205H vs 2225H
JBL ƒGƒ“ƒNƒ��[ƒWƒƒ�[4520‚ÌŽd—l
http://www.jblpro.com/pub/obsolete/Low_Frequency_Enclosures2.pdf
Oh no. I did it. JBL 4520 related - Page 4
https://www.youtube.com/watch?v=phY86SJBy98
4 speakers JBL 4520 ("Scoop" C55), the same you see in the background with 2x15" JBL's (2205?) each speaker and two subs on the floor (that you can't see).
Links:
2205
2225A vs 2205H vs 2225H
JBL ƒGƒ“ƒNƒ��[ƒWƒƒ�[4520‚ÌŽd—l
http://www.jblpro.com/pub/obsolete/Low_Frequency_Enclosures2.pdf
Oh no. I did it. JBL 4520 related - Page 4
Chest pounding bass - with no or minimum distortion or how to "make your stomach move."
https://www.youtube.com/watch?v=phY86SJBy98
4 speakers JBL 4520 ("Scoop" C55), the same you see in the background with 2x15" JBL's (2205?) each speaker and two subs on the floor (that you can't see).
Links:
2205
2225A vs 2205H vs 2225H
JBL ƒGƒ“ƒNƒ��[ƒWƒƒ�[4520‚ÌŽd—l
http://www.jblpro.com/pub/obsolete/Low_Frequency_Enclosures2.pdf
Oh no. I did it. JBL 4520 related - Page 4
Ok, but what about spl?
Don't take my answer as a/the right solution for your problem but I guess it takes you closer.
So let's think. (If) You use one speaker*:
Question on the "double scoop" short throw horn. - Page 3
107.5 dB/W/m
150 watts
1 loudspeaker
1 meter
Generated sound pressure level 129.26 dB. Consider about 130 dB*
Now consider the disco (space) above:
107.5 dB/W/m
150 watts
4 loudspeakers
5 meters
Generated sound pressure level 121.35 dB. Consider about 122 dB*
*results should be approx., note. I never had the opportunity to measure.
Use this calculator and the simulation in the link above. Should be close to reality in situ. Addressing that you also have the power subs (2x) for better performance at low frequencies what gives you probably a little more SPL and LF extension if they are well tunned and in sink.
This must be what you and many people are looking for and keep asking and asking in this forums. Have a happy party. 😀
So let's think. (If) You use one speaker*:
Question on the "double scoop" short throw horn. - Page 3
107.5 dB/W/m
150 watts
1 loudspeaker
1 meter
Generated sound pressure level 129.26 dB. Consider about 130 dB*
Now consider the disco (space) above:
107.5 dB/W/m
150 watts
4 loudspeakers
5 meters
Generated sound pressure level 121.35 dB. Consider about 122 dB*
*results should be approx., note. I never had the opportunity to measure.
Use this calculator and the simulation in the link above. Should be close to reality in situ. Addressing that you also have the power subs (2x) for better performance at low frequencies what gives you probably a little more SPL and LF extension if they are well tunned and in sink.
This must be what you and many people are looking for and keep asking and asking in this forums. Have a happy party. 😀
Not sure what this thread is all about and purposes.
Reminds me of a study I did decades ago about calibrating weather terms like "partly sunny" so forecasters could use them with better precision.
A more interesting question is what does 50 Hz sound like and/or feel like. And 40 Hz and so on.
You start by having good control of the stimulus since low freq (like under 35 Hz) are pretty rare, contrary to what many people think. Watching the electric signal (and having naive faith in the truth of your sim) doesn't tell you what is present in the room, only a mic does that. But once you do a room freq response at your sitting position, you can trust the electric signal as viewed in a real time analyzer.
Ben
Reminds me of a study I did decades ago about calibrating weather terms like "partly sunny" so forecasters could use them with better precision.
A more interesting question is what does 50 Hz sound like and/or feel like. And 40 Hz and so on.
You start by having good control of the stimulus since low freq (like under 35 Hz) are pretty rare, contrary to what many people think. Watching the electric signal (and having naive faith in the truth of your sim) doesn't tell you what is present in the room, only a mic does that. But once you do a room freq response at your sitting position, you can trust the electric signal as viewed in a real time analyzer.
Ben
If it's hitting you in the chest the power is around 120Hz and up.
To get them dancing hit them in the Pubic Chakra with clean 60Hz or so.
Dan.
To get them dancing hit them in the Pubic Chakra with clean 60Hz or so.
Dan.
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True.
Going from 8" 3-way (crossed at 80hz) to a horn\double 15" (crossed at 80hz), now I was pounded. The subs shook you, but double 15's (80-200hz) pounds you.
Explosive dynamics from horn loaded compression drivers helps add the sharp tleading transient edge.
If you think not, listen to just a sub or woofer and try to tell me how sharp or quick it is.........
Norman
Going from 8" 3-way (crossed at 80hz) to a horn\double 15" (crossed at 80hz), now I was pounded. The subs shook you, but double 15's (80-200hz) pounds you.
Explosive dynamics from horn loaded compression drivers helps add the sharp tleading transient edge.
If you think not, listen to just a sub or woofer and try to tell me how sharp or quick it is.........
Norman
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It's about spl but not really. It's really about what you're used to. Once you've built up tolerance to a certain level, the effect is gone. So now you need more. Sound 'pressure' level is just that, pressure against your body. And it's noticeable at surprisingly low levels.
hmm. sorry, i got off track..................
threshold under 80z ?
sensing a pressure wave that low ?
no clue.
threshold under 80z ?
sensing a pressure wave that low ?
no clue.
Man this is true! I tried to turn off my 2 way system while leaving only subwoofer on, and punch is gone! As i turn on it, punch is appared again. But the interesting stuff is that the bass level was the same with or without the main speaker, so i think that our mind is calibrated to perceive more feeling when the response is flat in frequency.
I don't agree who says we can't feeling vibration in the 30-40 hz region. This can be felt like "slamm" rather then "punchy", but is still enjoiable at high levels. 🙂
Without buying into the word-play here, if you want visceral experience:
1. get ESLs... if you really want a sense of wood sticks hitting brass objects*
2. time align... so that the punch from each driver reaches you at the same time; remember, alignment isn't just a matter of distance and the speed of sound
Ben
*a favourite demo is part 6 of Holst's Band Suites (folk song named something like The Village Blacksmith) which has an orchestral anvil, no sound quite like steel on steel.
1. get ESLs... if you really want a sense of wood sticks hitting brass objects*
2. time align... so that the punch from each driver reaches you at the same time; remember, alignment isn't just a matter of distance and the speed of sound
Ben
*a favourite demo is part 6 of Holst's Band Suites (folk song named something like The Village Blacksmith) which has an orchestral anvil, no sound quite like steel on steel.
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