quakecitystudio Posted June 28, 2012 Report Share Posted June 28, 2012 (edited) Since it is highly discouraged to have someone site inside an extreme SPL vehicle, 170db+, I'm curious what it would do to a balloon that is sealed inside the compression chamber. I know that the woofers apply pounds of pressure in it's compression stroke and create a vacuum draw of pressure of equal strength, so for someone to sit inside a pressure chamber, if they could keep their mouth and nose closed they may be somewhat alright, but what I think happens is that when you open your mouth, the system's air vacuum draws the air out of your lungs so rapidly that it could rip your lungs and diaphragm, because it's basically trying to "pull" pull those organs out of your mouth, since especially the diaphragm is what moves to help you breathe. But as far as if a person sat inside will it "crush" you? If an extreme vehicle has the compression chamber so rigid that the walls will not flex then something's gotta give. So, I'm thinking that the bass compression from the speakers would cause a balloon to burst from the amount of new pressure exerted onto it. Also, when they had vacuum chambers outlawed, did competitors actually hook a pipe to the sealed chamber, and suck air out of it? And did the woofers pull forward from doing this? (I know this a crazy thought but curious to know). Oh, and this is different from putting something in front of a port of an enclosure. The woofers apply pounds of air pressure that can rip or forcefully impact anything that is in the path of it's air drawing port. Edited June 28, 2012 by quakecitystudio Quote Bass Music Producer • Photographer • Graphic Designer -------------- Deep Sector Boom... Link to comment Share on other sites More sharing options...
HHR Ed Posted June 28, 2012 Report Share Posted June 28, 2012 Yes balloons pop in an extreme car, But they pop due to vacuum. It makes the pressure inside the balloon blow the balloon outwards. And as far as outlawing vacuum chambers, they actually outlawed the use of compressed air or gas. I believe the Gates bronco had nitrogen at one point and would vacuum seal the doors and pump the cabin with gas. Quote Ed Lester ShowtimeSPL Host Showtime Electronics Video MarketingMy old Build Loghttp://www.stevemead...08/#entry511451http://www.youtube.com/showtimespl 5 time dB Drag Finalist Last ride 2007 HHR, current dB 153.5 and bass race 149.4 dB. 153.0 dB on music New Ride, 2008 HHR SS. Build under way. Loudest score ever = 171dB 2009 dB Drag Racing, North American Points Champion Link to comment Share on other sites More sharing options...
HHR Ed Posted June 28, 2012 Report Share Posted June 28, 2012 Here, at 1:28 Quote Ed Lester ShowtimeSPL Host Showtime Electronics Video MarketingMy old Build Loghttp://www.stevemead...08/#entry511451http://www.youtube.com/showtimespl 5 time dB Drag Finalist Last ride 2007 HHR, current dB 153.5 and bass race 149.4 dB. 153.0 dB on music New Ride, 2008 HHR SS. Build under way. Loudest score ever = 171dB 2009 dB Drag Racing, North American Points Champion Link to comment Share on other sites More sharing options...
Ray Posted June 28, 2012 Report Share Posted June 28, 2012 We tried helium once. Quote 2008 California state record holder 157.2 Bassrace2009 California state record holder 157.0 BassraceRollin 50's 158.7db2009 King of Cali Bassrace2009 USACi score 160.5 @ 42hz Link to comment Share on other sites More sharing options...
quakecitystudio Posted June 28, 2012 Author Report Share Posted June 28, 2012 I think it pops on compression. The only way to really test this is to put a small balloon in a sealed box for a 15" woofer, tape it to a side and a camera and a small flash light do a sweep test. The sealedness of the box will eliminate the potential for "air traffic" coming into or exiting the box. or use a box that is sealed with a plexiglass. Quote Bass Music Producer • Photographer • Graphic Designer -------------- Deep Sector Boom... Link to comment Share on other sites More sharing options...
HHR Ed Posted June 28, 2012 Report Share Posted June 28, 2012 I think it pops on compression. The only way to really test this is to put a small balloon in a sealed box for a 15" woofer, tape it to a side and a camera and a small flash light do a sweep test. The sealedness of the box will eliminate the potential for "air traffic" coming into or exiting the box. or use a box that is sealed with a plexiglass. That test wont help you determine whether the pop happens on the compression or vacuum. You would need a high speed camera. Quote Ed Lester ShowtimeSPL Host Showtime Electronics Video MarketingMy old Build Loghttp://www.stevemead...08/#entry511451http://www.youtube.com/showtimespl 5 time dB Drag Finalist Last ride 2007 HHR, current dB 153.5 and bass race 149.4 dB. 153.0 dB on music New Ride, 2008 HHR SS. Build under way. Loudest score ever = 171dB 2009 dB Drag Racing, North American Points Champion Link to comment Share on other sites More sharing options...
quakecitystudio Posted June 28, 2012 Author Report Share Posted June 28, 2012 Also, I know that people compete with putting the meter in the port, but how loud is it when you put the meter inside a completely sealed or ported box with however many woofers? Quote Bass Music Producer • Photographer • Graphic Designer -------------- Deep Sector Boom... Link to comment Share on other sites More sharing options...
quakecitystudio Posted June 28, 2012 Author Report Share Posted June 28, 2012 I think it pops on compression. The only way to really test this is to put a small balloon in a sealed box for a 15" woofer, tape it to a side and a camera and a small flash light do a sweep test. The sealedness of the box will eliminate the potential for "air traffic" coming into or exiting the box. or use a box that is sealed with a plexiglass. That test wont help you determine whether the pop happens on the compression or vacuum. You would need a high speed camera. Yea, I know let me find someone with a Phantom camera and see if their willing to for this project. Quote Bass Music Producer • Photographer • Graphic Designer -------------- Deep Sector Boom... Link to comment Share on other sites More sharing options...
HHR Ed Posted June 28, 2012 Report Share Posted June 28, 2012 Quote Ed Lester ShowtimeSPL Host Showtime Electronics Video MarketingMy old Build Loghttp://www.stevemead...08/#entry511451http://www.youtube.com/showtimespl 5 time dB Drag Finalist Last ride 2007 HHR, current dB 153.5 and bass race 149.4 dB. 153.0 dB on music New Ride, 2008 HHR SS. Build under way. Loudest score ever = 171dB 2009 dB Drag Racing, North American Points Champion Link to comment Share on other sites More sharing options...
quakecitystudio Posted June 28, 2012 Author Report Share Posted June 28, 2012 Quote Bass Music Producer • Photographer • Graphic Designer -------------- Deep Sector Boom... Link to comment Share on other sites More sharing options...
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