Originally Posted by Patrick Mackinnon
So this is a bit of a strange one. I'm looking to compile a list of low budget subwoofers capable of producing VERY low frequencies.
In the range of the 0-60Hz region. I gather many commercially available speakers will be limited however I could be wrong here, this is all very new to me and if anyone could shed some light on the matter of potentially modifying standard subwoofers to produce the desired frequencies, I'm all ears
I must stress, it is NOT for sound as such but more for the effect the low frequency has on the air and it's surroundings. I am undertaking a rather large and complicated engineering project which involves this principle, but don't really have the budget to spend £400+ on a subwoofer.
I have been researching but thought what better place to ask than a sub forum about subwoofers. Basically, are there subwoofers for cheap that are capable of such low frequency ranges?
Again, very out-there topic but any discussion is good discussion.
I'm sorry, but you can't possibly do what you want to do on such a limited budget. The number of subs capable of reproducing frequencies from 1 to 20 Hz at the ~ $550 pricepoint equals exactly... ZERO. They don't exist. If all you need is 20 to 60 Hz, you'll have many more options. However, you said this was a "large and complicated engineering project" looking at the "effect the low frequency has on air and it's surroundings" so I would think infrasonics, (<20 Hz), would be a substantial part of the project. You will also need substantial output at these low frequencies, so multiples of any of the below subs may be necessary.
The only subwoofer I know that has output to <1 Hz is the rotary fan sub. It costs somewhere north of $12k and that doesn't include the building modifications required to install it:
There is also the BossoBass Raptor System One, that for $2,599 plus the amp for $999 will get you 5.5 Hz and be down 10 dB at 1.5 Hz. http://bossobass.com/Bossobass.com/Home.html
Mark Seaton's subs will have output down to 7 Hz or so, depending on where he's setting the HPF these days. An F18+ will set you back $2,395, with additional slave units at $1,195
Nathan Funk's subs will get to 10 Hz, but will cost more than the Seatons: https://www.funkaudio.ca/
JTR's Cpativator 4000 ULF has output to 10 Hz and will cost $3,399: http://jtrspeakers.com/index.html: http://data-bass.com/data?page=home
You should check Data-Bass as they have some terrific measurements of subwoofer drivers and systems, both commercial and DIY:
Another place you could check s the DIY forum. Many forum members are building prodigious subwoofer systems for lees than their commercial counterparts. Still, the budget will need to increase even if you "roll your own."
Bottom line, if you want to actually complete your project as specified, you'll need to raise the subwoofer budget SUBSTANTIALLY.