Sensurround still playing!

[JBL 4645]

Some grand sound formats just won’t die quietly with (((Sensurround))) pounding you in the chest!

The in-70mm article is like hardcore porn-a-phonic :p I can still to this day feel the deep reverb of Earthquake (1974), three times at 79p.

Wicked, wicked JBL is on the scene now with Sensuuround makes, me won’t play Earthquake on my JBL sound system LOL!

"We showed "Earthquake" a few years ago where we brought in 24 huge JBL subwoofers, each equipped with two 18" woofers.":eek::eek::eek::eek:

http://www.in70mm.com/news/2010/sensurround/index.htm (http://www.in70mm.com/news/2010/sensurround/index.htm)

http://www.in70mm.com/news/2008/sensurround/index.htm

[Audiobeer]

Is it hand operated like the rabbit or do you slip into it?

[JBL 4645]

Been thinking since Earthquake’s Sensurround was large horn loudspeakers located in one fixed position there would no way for it to crate physical large movements of pressure waves in the centre of the auditorium. There would have to be some trade-off not a great deal just some trade-off that’s all.

I’m not a physicist not even pretending to be one but the graphs in this link even a few animated ones shows what the wave form motion looks like.

http://www.geo.mtu.edu/UPSeis/waves.html

Now if wave is going to be huge at the front then dip down then rise upwards again as it moves from point A to B to C to D to E and so on and so on…then you’d need multiple subs located all around with special means of generating different signals at different delay intervals to make it an even more sickening motion feel.

“P wave” looks to be like tight punchy wave motion which moves faster than the speed of sound.
http://www.geo.mtu.edu/UPSeis/images/P-wave_animation.gif

“S waves” kinder has large peaks and dips as it rolls by…
http://www.geo.mtu.edu/UPSeis/images/S-wave_animation.gif

“Love waves” has kinder of jittery wave motion inwards and outwards on the sides
http://www.geo.mtu.edu/UPSeis/images/Love_animation.gif

“Rayleigh waves” looks interesting that the wave just rises upwards the down and straight then upwards again with minimal dip deviation.
http://www.geo.mtu.edu/UPSeis/images/Rayleigh_animation.gif


Oh, it was impressive when the mild Earthquake tremor came within reel 1 and several more before, “The Big One” rumbled for 8 ½ minutes…

Even if we place subs along each sidewalls and front and rear with different delay settings I doubt it would come near to single LFE.1 signal been sent to a digital sound delay box.

The signal I, think would have to be independent for it to rumble out different rolling waves, and that’s a lot of LFE.1 channels a lot!

Still no harm in trying with single LFE.1 and passing it though a delay with each sub set at different threshold attack / release times.

Then again if a real one stuck around you’re area it would seem like one large peak of the wave attacking you’re home violently to the point of collapsing.

It would be sheer madness to attempt to simulate dangerous wave motions that would put you’re life at risk and you’re hearing.

Anyway I’m just thinking out loud like I said I’m not a physicist not even pretending to be one its good starting point to try something new and fresh.

[jcrobso]

But I remember reading reading about the sub speakers in Mix Magazine.
This was the first real attempt to bring very low frequency sound on a wide scale.
Seismic waves have different forms and travel differently through the ground that they would through the air.

About 18 years ago after just finishing a sound system for the Church that I was attending we put on a kids program. It was based on Indiana Jones and of course included an earth quake seen. This program was the first use of the new building and sound system.
The subs in the sound system were 2 JBL 4520 bass scopes loaded with JBL 2226 15" driven by a PL 700.
The kids had been practicing on the old church and had been instructed to just shake around during the quake sound effect.
We had one rehearsal in the new building and they had no clue as to what was about to happen. When the time came for the quake sound I put in 20db of boost at 50HZ and opened up the channel on the soundboard to max.
The whole room started shaking, the kids started screaming, they had been instructed to do, but now the screams were real! OK I was bad.:o:
I stopped the sound track and went down to talk to every one and tell what had just happened. The kids thought that it was a real quake, they had never experienced sound like that, the drama director loved it and we did the scene over again so the kids would get used to it, the kids wanted to keep doing it, over & over, etc.
Any way on performance day the congregation love the sound and I got many complements on the sound effect, they all said that they were shaking in the pews.
That was just with 4-15" horn loaded speakers in building that held about 900. Now with 24 dual 18" subs you could rattle the fillings out of your teeth.:blink:

[JBL 4645]

But I remember reading reading about the sub speakers in Mix Magazine.
This was the first real attempt to bring very low frequency sound on a wide scale.
Seismic waves have different forms and travel differently through the ground that they would through the air.

About 18 years ago after just finishing a sound system for the Church that I was attending we put on a kids program. It was based on Indiana Jones and of course included an earth quake seen. This program was the first use of the new building and sound system.
The subs in the sound system were 2 JBL 4520 bass scopes loaded with JBL 2226 15" driven by a PL 700.
The kids had been practicing on the old church and had been instructed to just shake around during the quake sound effect.
We had one rehearsal in the new building and they had no clue as to what was about to happen. When the time came for the quake sound I put in 20db of boost at 50HZ and opened up the channel on the soundboard to max.
The whole room started shaking, the kids started screaming, they had been instructed to do, but now the screams were real! OK I was bad.:o:
I stopped the sound track and went down to talk to every one and tell what had just happened. The kids thought that it was a real quake, they had never experienced sound like that, the drama director loved it and we did the scene over again so the kids would get used to it, the kids wanted to keep doing it, over & over, etc.
Any way on performance day the congregation love the sound and I got many complements on the sound effect, they all said that they were shaking in the pews.
That was just with 4-15" horn loaded speakers in building that held about 900. Now with 24 dual 18" subs you could rattle the fillings out of your teeth.:blink:
:rotfl:

Bingo! That’s it! They travel though the ground below us! You’re absolutely right!

This looks like a sub from hell!:D

http://www.audioheritage.org/vbulletin/attachment.php?attachmentid=10037&stc=1&d=1126906064

http://www.jblpro.com/pub/obsolete/low_frequency_enclosures2.pdf

When I was on the bus a few weeks ago the lows rattled me hard, my vision was buzzing (vibrating) I have no idea what frequency since I don’t have a portable spectrum analyzer.

[Progneta]

Excuse the mess of the shop, moving stuff around is getting messy....Here is a pair of EarthQuake cabinets from a theatre that played the famous Charles Heston movie EarthQuake...dun dun dunnnn! :)

These truly are great! They house an 18 inside and I love them! Actually the 18 inch subwoofers inside are Altec Lansing 18 inch subwoofers that came from the Cleveland Browns scoreboard at the old stadium before they tore it down. Little history there ;)..... I use them for the subs in my 7.1 :)

-G

[JBL 4645]

Progneta

Wow, give them a make-over shine them up a bit and put them back into good use with some latest crossover amp technology. :applaud:

There not all that large compared to the guitar lying against it.

It’s the depth of the cabinet enclosure that I can see, what is that, 3 feet?

Guess you can lay them on there side facing upwards so the width only takes up the room space! Or place each side along the wall so the sound wave goes along the wall or what ever as long as it rumbles the room!

[jcrobso]

:rotfl:

Bingo! That’s it! They travel though the ground below us! You’re absolutely right!

This looks like a sub from hell!:D

http://www.audioheritage.org/vbulletin/attachment.php?attachmentid=10037&stc=1&d=1126906064

http://www.jblpro.com/pub/obsolete/low_frequency_enclosures2.pdf

When I was on the bus a few weeks ago the lows rattled me hard, my vision was buzzing (vibrating) I have no idea what frequency since I don’t have a portable spectrum analyzer.
Except the 2226s were mounted flat not sticking out, interesting concept. Everything from 100hz up was handled by 4 SR4732.

[JBL 4645]

Except the 2226s were mounted flat not sticking out, interesting concept. Everything from 100hz up was handled by 4 SR4732.

I found that on google image linked to this site.

[Progneta]

Progneta

Wow, give them a make-over shine them up a bit and put them back into good use with some latest crossover amp technology. :applaud:

There not all that large compared to the guitar lying against it.

It’s the depth of the cabinet enclosure that I can see, what is that, 3 feet?

Guess you can lay them on there side facing upwards so the width only takes up the room space! Or place each side along the wall so the sound wave goes along the wall or what ever as long as it rumbles the room!

Hey! The stand 4 ft tall, 4 ft deep, 2 feet wide. They rumble to beat hell! :) Makes everything shake in the building! haha They are really dusty as I have been making speaker cabinets inside here lately...need to clean! To much work for me :D

[JBL 4645]

Hey! The stand 4 ft tall, 4 ft deep, 2 feet wide. They rumble to beat hell! :) Makes everything shake in the building! haha They are really dusty as I have been making speaker cabinets inside here lately...need to clean! To much work for me :D

Wow that large! Yeah get the duster out and MrSheen and give them an early Sping clean.:thmbsup:

http://www.aquaesuliswatercoolers.com/catalog/images/Mr%20Sheen%20Polish.jpg

[JBL 4645]

http://www.in70mm.com/news/2010/sensurround/english/index.htm

[alnico]

Hey! The stand 4 ft tall, 4 ft deep, 2 feet wide. They rumble to beat hell! :) Makes everything shake in the building! haha They are really dusty as I have been making speaker cabinets inside here lately...need to clean! To much work for me :D


Is Cerwin Vega model L48SE with one 18'' (189se)

http://img63.imageshack.us/img63/2658/cerwinvegaprofessionalp.jpg

[JBL 4645]

Things are now starting to rumble deeply in Germany. I’d like to have the money to get over there. Hey I’ve seen Battlestar galactic and Earthquake in sensurround to last a lifetime. Reading the behind scenes article is rumbling enough.
http://www.shalomjerusalem.com/earthquakes/earthquake_animated.gif

http://www.in70mm.com/news/2010/sensurround/in_progress/index.htm

http://www.in70mm.com/news/2010/sensurround/english/index.htm

On line tickets
Registrierte Kunden können sich hier anmelden
http://www1.reservix.de/off/login_check.php?id=c6ec16e8cf3cd507f7ea17f45b144a0 a7693549bc855e737d88ea423526ceb12066b103d5cba1a94&vID=916&eventGrpID=37185

With promotion video (looped) (((50KW Sensurround!))):bouncy::bouncy:
http://www.in70mm.com/news/2010/sensurround/index.htm

Sounds better played though my JBL sound system on the AUX in Dolby stereo Pro-Logic.

[JBL 4645]

http://www.youtube.com/watch?v=Vl6wLcNz5eA&feature=player_embedded#!

[JBL 4645]

"Earthquake" at the Schauburg English
http://www.in70mm.com/news/2010/earthquake_2006/index.htm

„Erdbeben“ in der Schauburg German
http://www.in70mm.com/news/2010/erdberbe_2006/index.htm

[JBL 4645]

((((WOW)))) seems like it was good ((((Sensurround)))) turn out the link as been updated with some nice pictures.

http://www.in70mm.com/news/2010/sensurround/in_progress/index.htm