Comments on: rotary subwoofer http://hackaday.com/2006/09/27/rotary-subwoofer/ Fresh hacks every day Fri, 10 Feb 2012 16:05:53 +0000 hourly 1 http://wordpress.com/ By: nonyabuisiness http://hackaday.com/2006/09/27/rotary-subwoofer/comment-page-1/#comment-68270 Sat, 28 Mar 2009 00:03:18 +0000 http://hackaday.iheartcashews.com:8181/2006/09/27/rotary-subwoofer/#comment-68270 Can you tell me how they work?

]]> By: Richard Warwick http://hackaday.com/2006/09/27/rotary-subwoofer/comment-page-1/#comment-22232 Thu, 07 Dec 2006 17:25:52 +0000 http://hackaday.iheartcashews.com:8181/2006/09/27/rotary-subwoofer/#comment-22232 Great thread. I’m really keen to make a very small-scale rotary subwoofer, if for no other reason than to demonstate the principle to myself. I’m currently playing with a 6″ diam long excursion sub & a slim 150mm 12 PC cooling fan… Looks promising so far :) Anyone else here inteseted at having a go at making one ?

]]> By: art http://hackaday.com/2006/09/27/rotary-subwoofer/comment-page-1/#comment-22231 Mon, 13 Nov 2006 01:38:17 +0000 http://hackaday.iheartcashews.com:8181/2006/09/27/rotary-subwoofer/#comment-22231 to …: you’re so wrong, its not even funny. there are plenty of DVDs with content below 20Hz, if you dont believe it just use a audio editor with spectrum analysis and look at something like Titan AE, which has scenes having plenty of energy down to 4Hz (!).

]]> By: seantech http://hackaday.com/2006/09/27/rotary-subwoofer/comment-page-1/#comment-22230 Tue, 10 Oct 2006 22:20:12 +0000 http://hackaday.iheartcashews.com:8181/2006/09/27/rotary-subwoofer/#comment-22230 Real neat product. I must say that this bruce figure has found quite a nifty solution to controling the variable pitch propeller. I am sure he spent some time pondering on that one quite simple solution!

I wonder if there is any room for improvement by adding some electronic control circuitry for more precise control of the propeller pitch at different frequencies, therefor flattening out the frequency responce.

I wouldn’t mind building something similar just for the hell of it sometime!

]]> By: shipofthesun http://hackaday.com/2006/09/27/rotary-subwoofer/comment-page-1/#comment-22229 Sat, 30 Sep 2006 07:22:10 +0000 http://hackaday.iheartcashews.com:8181/2006/09/27/rotary-subwoofer/#comment-22229 Much more spactial information is contained in the low freqs. than is usually thought. I used to own one of the old EV 30″ drivers that lived in a roughly 7′ x 3″ x 4″ cabinet Being driven by various Carver and Marantz power amps and it provied all sorts of information in the 16 to 40hz range. Stuff recorded in studios in the sixtes in NY where you can hear the subway, rumbling underneath the studio during a take, that the engineers couldn’t hear on tape and assumed those Neuman’s weren’t picking it up. Instruments, especially acoustic, had more life, weight. So yeah, I could see this fan/sub working, and would really like to.

]]> By: Tracker http://hackaday.com/2006/09/27/rotary-subwoofer/comment-page-1/#comment-22228 Sat, 30 Sep 2006 06:10:01 +0000 http://hackaday.iheartcashews.com:8181/2006/09/27/rotary-subwoofer/#comment-22228 well it seems like it would be sweet except for the 25k that you have to blow to get it. Oh well ill stick with my 2000watt pc speakers.

]]> By: lokken http://hackaday.com/2006/09/27/rotary-subwoofer/comment-page-1/#comment-22227 Sat, 30 Sep 2006 03:48:02 +0000 http://hackaday.iheartcashews.com:8181/2006/09/27/rotary-subwoofer/#comment-22227 Wouldn’t it make sense that you could get a similar effect by rotating a conventional speaker basket? The only real difference here is that the signal is coupled with the air differently.

]]> By: slartybardfast http://hackaday.com/2006/09/27/rotary-subwoofer/comment-page-1/#comment-22226 Sat, 30 Sep 2006 03:31:21 +0000 http://hackaday.iheartcashews.com:8181/2006/09/27/rotary-subwoofer/#comment-22226 “I’m so dissapointed my system can’t produce sounds I can’t hear.”

You sound like a real audiophile. That is why they pay $400 for 1 foot power cords (not realizing that there is many feet of 25 cent per foot power wire in the walls). Or thousands on special DACs because of “jitter” in between the bits.

If only consumers in all markets were that gullable. There would be many more millionaires.

]]> By: Justifeir http://hackaday.com/2006/09/27/rotary-subwoofer/comment-page-1/#comment-22225 Fri, 29 Sep 2006 21:01:40 +0000 http://hackaday.iheartcashews.com:8181/2006/09/27/rotary-subwoofer/#comment-22225 LAST POST!!!

heh, i love the hacks by the way

]]> By: YNot http://hackaday.com/2006/09/27/rotary-subwoofer/comment-page-1/#comment-22224 Fri, 29 Sep 2006 16:25:41 +0000 http://hackaday.iheartcashews.com:8181/2006/09/27/rotary-subwoofer/#comment-22224 video of it in action
http://www.youtube.com/watch?v=E7Bkrypxzs4

here is a guy that had a demo in his house and is now in the middle of installing them.
http://bassment.wordpress.com/

]]> By: soho54 http://hackaday.com/2006/09/27/rotary-subwoofer/comment-page-1/#comment-22223 Fri, 29 Sep 2006 16:20:52 +0000 http://hackaday.iheartcashews.com:8181/2006/09/27/rotary-subwoofer/#comment-22223 Why do you people think there is a digital audio cut off frequency, or that movie audio is rolled off under 20hz? If you are ignorant of the facts, please remain silent.

Check this link and see for yourselves. http://www.avsforum.com/avs-vb/showthread.php?p=8351789&&#post8351789

]]> By: Richard http://hackaday.com/2006/09/27/rotary-subwoofer/comment-page-1/#comment-22222 Fri, 29 Sep 2006 13:52:20 +0000 http://hackaday.iheartcashews.com:8181/2006/09/27/rotary-subwoofer/#comment-22222 There is plenty below 20Hz on most material, hell, even the AC3 versions of 24 I have downloaded had loads of stuff down near that.

Sure, most currently mastered CDs have had anything resembling bass removed and replaced with phase rotated harmonics much like radio station type processors do, this is just to give them more headroom. Movies with the LFE channel dont suffer from this and have plenty of room to shake the house.

]]> By: Andrew http://hackaday.com/2006/09/27/rotary-subwoofer/comment-page-1/#comment-22221 Fri, 29 Sep 2006 11:15:09 +0000 http://hackaday.iheartcashews.com:8181/2006/09/27/rotary-subwoofer/#comment-22221 Has anyone noticed that the specifications/information provided on the website doesn’t quite add up.
I’m not saying it doesn’t work, but its performance may not be quite as they say. It is not necessarily the most elegant solution for a servo/rotary driver either….

]]> By: Bat http://hackaday.com/2006/09/27/rotary-subwoofer/comment-page-1/#comment-22220 Fri, 29 Sep 2006 10:08:39 +0000 http://hackaday.iheartcashews.com:8181/2006/09/27/rotary-subwoofer/#comment-22220 Wow..like the one that used in the plane.. :-)Fantastic idea…

]]> By: Josh http://hackaday.com/2006/09/27/rotary-subwoofer/comment-page-1/#comment-22219 Thu, 28 Sep 2006 23:41:21 +0000 http://hackaday.iheartcashews.com:8181/2006/09/27/rotary-subwoofer/#comment-22219 “

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