New Subwoofer Technology - Home Theater Forum and Systems - HomeTheaterShack.com

Reply
 
Thread Tools
post #1 of 75 Old 09-19-06, 09:12 AM
Robert_Gibran
Inactive
 
Posts: n/a
Sponsored Links
Advertisement
 
post #2 of 75 Old 09-19-06, 09:43 AM
Elite Shackster
 
Sonnie's Avatar
 
Join Date: Apr 2006
Location: L.A. (Lower Alabama)
Posts: 22,577
My System
Re: New Subwoofer Technology

Yes... the sub fan has been the subject of discussion in couple of threads. The price was a little scary... :raped:

Good to see ya out and about Robert.

Sonnie is online now  
post #3 of 75 Old 09-19-06, 10:43 AM
SVSound
Jack
 
Join Date: May 2006
Posts: 89
Re: New Subwoofer Technology

You're so vane...
Jack Gilvey is offline  
 
post #4 of 75 Old 09-20-06, 07:33 PM
Mr. Lamb Fries
Inactive
 
Posts: n/a
Re: New Subwoofer Technology

Any measurments on this thing...I heard it went down to 5 hz, How does it work???
post #5 of 75 Old 09-21-06, 12:43 AM
Senior Shackster
Josuah
 
Join Date: Apr 2006
Location: San Jose, CA
Posts: 636
Re: New Subwoofer Technology

I'm not 100% sure, but this is my understanding of it.

The fan blades spin (seem to be flat blades, so I'm not sure it pushes air one direction or the other, probably not or else it sitting between the two enclosed areas wouldn't work right???) and at the same time they vibrate at the frequency you are trying to reproduce. Therefore, the air being moved by the blades have the frequency.

I imagine it's a lot like when you talk into a standard fan.
Josuah is offline  
post #6 of 75 Old 09-21-06, 02:32 AM
Shackster
 
azjimmy's Avatar
Jim
 
Join Date: Jun 2006
Location: Phoenix, Az
Posts: 72
Re: New Subwoofer Technology

It works on the same theory as a helicopter rotor. It compresses air just like a speaker, only it uses variable pitch blades to push air instead of a moving cone.
Pretty neat, really.
The video on the site is down right scary when they do the sweep. Looks like it's going to shuck a blade! You can even hear one of the guys saying not to get too close. Check it out http://www.youtube.com/watch?v=E7Bkrypxzs4
Jim

"Relax. Don't worry. Have a Homebrew."
Charlie Papazian
azjimmy is offline  
post #7 of 75 Old 09-21-06, 10:00 PM
jeffbridges
Inactive
 
Posts: n/a
Re: New Subwoofer Technology

Quote:
Jack Gilvey wrote: View Post
You're so vane...
You probably think this song is about you, Dont you, Don't you
post #8 of 75 Old 09-22-06, 05:22 AM
Elite Shackster
Chrisbee
 
Join Date: Apr 2006
Posts: 1,018
Re: New Subwoofer Technology

There are three videos on the TRW fan sub.

It would seem to offer not so much a signal to noise ratio as a noise to signal ratio!

When I think of the lengths I went to to just to quieten the fan in my EP2500...!
Chrisbee is offline  
post #9 of 75 Old 09-22-06, 01:09 PM
Senior Shackster
 
Join Date: Apr 2006
Location: Ny, NY
Posts: 960
Re: New Subwoofer Technology

Whenever people mention these fan subs I always wonder how musical content would sound. Something about musical bass notes comming from fan blades is incredibly interesting to me.

If you don't have a BFD for your sub, get one fast!
If you don't have REW, get it now!
Exocer is offline  
post #10 of 75 Old 09-26-06, 12:57 AM
JP
 
Join Date: Jul 2006
Location: Walla Walla, WA
Posts: 17
Re: New Subwoofer Technology

Quote:
Exocer wrote: View Post
Whenever people mention these fan subs I always wonder how musical content would sound. Something about musical bass notes comming from fan blades is incredibly interesting to me.
I see two issues:

Can the human ear distinguish between notes (fundamentals and harmonics) in the extreme infrasonics that this "driver" produces?

In the end, does it really matter what the transducer is since all speakers are simply mechanical interfaces between the electronic signal and our ears (they all excite the air, does it matter how?)

JP
JimPeitersen is offline  
Reply

Bookmarks

Tags
subwoofer , technology

Quick Reply
Message:
Options

Register Now




PLEASE COMPLETE ALL REQUIRED FIELDS BELOW... THANKS!

REQUIRED FIELDS ON THIS PAGE
YOU MUST COMPLETE ALL OF THESE

Username
Password
Confirm Password
Email Address
Confirm Email Address
Random Question
Random Question #2




User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
PLEASE READ BELOW PRIOR TO ENTERING AN EMAIL ADDRESS!

ATTENTION!

YOU MUST ACTIVATE YOUR ACCOUNT!

Activation requires you reply to an email we will send you after you register... if you do not reply to this email, you will not be able to view certain areas of the forum or certain images... nor will you be able download software.

AN INVALID EMAIL ADDRESS WILL CAUSE YOUR ACCOUNT TO BE DELETED!

See our banned email list here: Banned Email List

We DO NOT respond to spamcop, boxtrapper and spamblocker emails... please add @hometheatershack DOT com to your whitelist prior to registering or you will get nowhere on your registration.


Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML is not allowed!
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


For the best viewing experience please update your browser to Google Chrome