5 to 20Hz yoou need surface area and amplitude.
Or a fan... https://duckduckgo.com/?q=fan+subwo...www.youtube.com/watch?v=FvzHyYzXEdw&ia=videos
Or a fan... https://duckduckgo.com/?q=fan+subwo...www.youtube.com/watch?v=FvzHyYzXEdw&ia=videos
Yes we can. You can hear tones as music down to about 10Hz, and below that as individual vibrations.
Any particular reason you didn't just link to the youtube video directly? Having to watch a video to see what someone is talking about is inefficient, but there's another layer on top of that with DuckDuckGo in the middle. I'm too lazy for information twice removed.
Pierrick,
A DML (distributed mode loudspeaker) has no advantage in low frequency reproduction over a standard subwoofer.
Tactile exciter transducers ("bass shakers") are designed to transmit low frequency vibrations mechanically so that they can be felt, rather than heard, making little SPL (sound pressure level).
The "best" way to reproduce ELF ("extra" or "extreme"..) depends on what your experiment is designed to demonstrate, where and under what conditions it will be conducted, and it's budget.
Art
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OK, this is a 10 Hz sub and this is its DIY variant, so going below ~ 20 Hz at any useful SPL won't be small and/or cheap unless something built in/added to a small, well constructed/sealed room using multiple inexpensive 'sub' woofers frequency shaped using DSP.
The HoverEzE (HeZe) as using inner tubes and cheap car subwoofers is the most cost-effective DIY bass shaker.
The pneumatic float is key to it's efficiency and effectiveness- more "shake" per watt with very little moving mass,
exceeding the output of the weighted solenoid-type devices originally popularized by ButtKicker.
This guide explains it in detail:
https://gitlab.com/HeZeGuide/HeZeGuide/-/tree/main
Art
The pneumatic float is key to it's efficiency and effectiveness- more "shake" per watt with very little moving mass,
exceeding the output of the weighted solenoid-type devices originally popularized by ButtKicker.
This guide explains it in detail:
https://gitlab.com/HeZeGuide/HeZeGuide/-/tree/main
Since the HeZe leaves the back side of the woofers as open baffles, depending on your listening level, you might use your existing 12" and be able to dispense with anything else between the HeZe and the 8" drivers.
Art
A big infinite baffle sub will do 5Hz. Four or eight of these depending on room size:
https://www.oneaudiousa.com/product-page/ib3
I've played around with a large open plan room that used eight of those drivers and the super low bass was stunning.
https://www.oneaudiousa.com/product-page/ib3
I've played around with a large open plan room that used eight of those drivers and the super low bass was stunning.
It's worth noting that typical bass shakers have a resonance peak and roll-off, so getting very low frequencies is likely to take more of them to compensate for that - similar to trying to use a regular speaker below resonance.
This page is older, but has a couple response curves toward the bottom and resonance frequencies for multiple units.
http://www.baudline.com/erik/bass/tactile_report.html
For a non-audio project, I've been using some exciters down very low (like 0.5-10 Hz). Their power handling is much lower at very low frequencies, so if you are using them below their rated range watch out for that as well.
Some newer frequency response data for multiple tactile transducers here (Buttkicker, Dayton, Clark, and Aura). This data seems to agree with scrapper4's opinion - Buttkicker LFE looks like it has the best low frequency response of the ones shown. But it's dropping fast below about 12 Hz.
https://www.audiosciencereview.com/...le-transducer-performance-measurements.52492/
https://www.audiosciencereview.com/...le-transducer-performance-measurements.52492/
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