new style sub can output 1hz!!

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nO}{8

nO}{8

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http://www.eminent-tech.com/RWbrochure.htm

"Subwoofer electronics usually contain a cutoff filter which sharply rolls off content to the subwoofer below 20Hz to protect the speaker. On the other hand, the rotary woofer has enough acoustic output to move a open door back and forth .5” between 1 and 5Hz! It has enough output to find resonance frequencies of walls and ceilings in a room. It requires no equalization to achieve flat response to below 1Hz. "
 
I would have thought the voicecoil would overheat, moving that slowly...

Most subwoofers have a difficult time producing acoustic output below 20Hz at audible levels
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Interesting. You can feel things below around 30Hz... but hearing them is another thing altogether.
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What is quite strange is if you look at the frequency response drive of this weird thing... it rolls off really badly after 30Hz, which is generally where you would tune a normal (ported) subwoofer so that it had the most punch.
 
would you use it as well as a normal sub? I can imagine it giving your room structural problems :eek:
 
that is awsome. I find it hard to believe people when they say they cant hear below 30hz though. My sub's have a strong output down to ~19hz, but lower than that it's really just the rush of air i can hear.


i want one of those. right now. its not the first rotate type subwoofer. Anybody remember the pheonix gold cyclone?

http://www.phoenixgold.com/webfaq/cyclone.htm

im sure that wasnt the first either, but the cyclone has been around for years.
 
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I find it hard to believe people when they say they cant hear below 30hz though.
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Most probably the sub is incapable of outputting 30hz at a decent level...and not because people can't hear/feel low tones.

I can definietly feel anything under 20hz, and 10hz feels funny :)
 
squiffy said:
Most probably the sub is incapable of outputting 30hz at a decent level...and not because people can't hear/feel low tones.

I can definietly feel anything under 20hz, and 10hz feels funny :)
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Are you sure you're not hearing the higher components of the sound?
 
squiffy said:
Nope, 10hz sine wave (don't play loud obviously) my subwoofer can reproduce 10hz. :D
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What model and what frequency is the subwoofer enclosure tuned to (i assume it's ported to get any kind of SPL at those frequencies)?
 
SVS 20-39 PC Plus, native port tune 20hz, can be altered in tune down to 12hz. I just leave it to 20hz tune though, as very little difference between the lowest port tunes in bass perception.
 
I thought it was bad news for a sub to be playing notes that far below the tuned frequency... but i guess that it must have high xmax etc. :cool:
 
In normal use unlikely to have material in the 10hz range, it can cope fine. Although if you can find out some material I'll give it a shot. Things like Toy Story 2 intro are fine on my sub (I've seen a £2000 M&K MX-350 fail miserbly on this scene)

http://www.hometheaterforum.com/htf/showthread.php?t=130032&highlight=toy+story+2+graph

Darla fish tank in Finding Nemo is incredible if a bit OTT, Titan AE also

Previous subs were Rel and just folded :( even with calibrated sub levels.
 
How much did you pay for the sub if you don't mind my asking? My AV setup needs a major revamp, at least on the sound side of things.
 
About £700, after all charges. Previous subwoofer was a Rel Storm, and for HT, the SVS is in a whole different class, the Rel sounds like a wet fart by comparison.
 
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