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A warning to all about HUGE Subwoofers

So I just bought a Velodyne HGS18 yesterday and its amazingly awesome. Enough so that I know that it can crack concrete and after playing with it a while i genuinely have realized this has the potential if unleashed to destroy a house.

I decided to do a test tone to see how it did and at 10HZ this thing will rattle your whole house (I listen to rap amongst other things, I'm no stranger to playing loud bass)and that is with very little volume. Be careful when you look at subs in accordance to your building.

I always thought the subs that had that potential were awesome and amazing which they are (at least this one) However it isnt fun be afraid to turn up your sub for fear of tearing down your walls. It wasnt that bad but it seems that in 2 seconds or less if its going to loud and low it could do some damage. I can only imagine what it would have done my volume was any higher or if i let it go without being next to the volume switch.

On a side note hearing frequencies that low is an amazing improvement and far better than I had anticipated
128x128systembuilder
johnk's avatar
johnk
1,973 posts
 
The larger the subwoofer or bass system the less it will cause issues with peaks and nulls or as you would say vibration in room walls furnishings.
bifwynne
2,206 posts
 
Great post Kurt. Your post and the attached chart corroborate my empirical findings when I hooked up my impedance buffer. I also agree that it is curious what is causing the low frequency SPL in Systembuilder's woofer. As you speculate, maybe its synthesizers???
bizango1
276 posts
 
The old "acoustic instruments only go down to" statements always show listeners' musical tastes and biases. Am I the only one who likes Aphex Twin, William Orbit, and other electronica artists? They are lucky to not be hindered by the limitations of acoustic instruments in their artistic endeavors. Anybody wanna challenge the artistry of electronica? I am listening to Rachel Podger playing Bach Violin Concertos and my subs aren't hurting a thing. I may switch to Four Tet in a little while and I'll be glad I have the subs so I can hear all they intended me to hear.
rudolphls's avatar
rudolphls
11 posts
 
The military might be interested in your subwoofer.
They could use it as an Acoustic Weapon.

Frequency & effects:
7 Hz: Supposedly the most dangerous frequency corresponding with the median alpha-rhythm frequencies of the brain. It has also been alleged that this is the resonant frequency of the body’s organs therefore organ rupture and even death can occur at prolonged exposure.

Just some interesting information I found out there.
Careful in that listening room.
bjbcab
131 posts
 
Guys all he did was play a test tone. Yes, synths will get you to 10hz or lower i guess. BTW, I doubt even in rap and electronica/synth has that much info at 10hz.
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