Sweet! (Bag End InfraSub) - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 13th January 2002, 01:03 AM   #1
BAM is offline BAM
diyAudio Member
 
Join Date: Sep 2001
Location: Carmel, IN; West Lafayette, IN
Send a message via AIM to BAM
Default Sweet! (Bag End InfraSub)

Bag End ELF technology comes home with the brand new InfraSub 12, FLAT DOWN TO 8 HERTZ! I never thought I'd read that about a subwoofer. When I finally have a house, I'll have to get me one of these! (It's self-powered with a 400-watt amplifier and a built-in ELF integrator (active EQ).

Gee, I just found out there's a BAM magazine. I'll bet that's right up my alley.

Anyway, now you don't need to buy a big pro-sound rig to get 8-Hz rumblings in your house. BAG END's reputation preceeds it, no doubt, with talk of tight, tuneful bass.

Someone needs to get a powerful amp and a driver to handle that power, and an ELF-1 integrator, and make a project like this.
  Reply With Quote
Old 13th January 2002, 01:09 AM   #2
JoeBob is offline JoeBob  Canada
diyAudio Member
 
JoeBob's Avatar
 
Join Date: Nov 2001
Location: Montreal, Canada
I do believe Rod Elliot did something pretty simmilar to ELF(TM), I think it was under the projects part...
  Reply With Quote
Old 13th January 2002, 01:50 AM   #3
Warp Engineer
On Holiday
 
AudioFreak's Avatar
 
Join Date: Oct 2001
Location: Queensland, Australia
Hey BAM,

Just a word of warning.

It dangerous to your health to operate a sub below 10Hz....... between 2-4Hz the resonant frequency of the human body is reached and well the rest ... well the rest lets just say it aint pretty!!!

@ 6-8Hz internal bleeding can be caused
@below 10Hz most people suffer nausea
  Reply With Quote
Old 13th January 2002, 03:50 AM   #4
diyAudio Member
 
Join Date: Feb 2001
Location: Columbia, SC
I've heard that, but never been able to verify it. If it were true, people wouldn't survive earthquakes or be able to operate jackhammers.
See patent #4481662 for the nitty gritty on ELF stuff.

Grey
  Reply With Quote
Old 13th January 2002, 03:57 AM   #5
Warp Engineer
On Holiday
 
AudioFreak's Avatar
 
Join Date: Oct 2001
Location: Queensland, Australia
Grey there are a few cases each year of people dying from exposure to infrasound.... it might not be seen very often but the risk is very real. Actually, the effects of infrasound were quite well known and accepted back 20 odd years ago when some of the movie theatres began to have subsonic actuators fitted in the seats .... many many people suffered adverse side effects...
  Reply With Quote
Old 13th January 2002, 04:13 AM   #6
Super is offline Super  United States
diyAudio Member
 
Join Date: May 2001
Location: Connecticut
Send a message via AIM to Super
8 hz is nice and all, but good luck hearing anything other than your floor vibrating. Seems interesting that it can go flat to 8 hz with only a 400 watt amp and a 12 inch driver, eq or no eq. I hope the transients aren't horrific like some other ELF-based (or equivalent) I've heard. IMO, a lot of them sound like "one noters".

(BTW, I finally got a chance to run some test tones through my sub. Yep, I got the 16hz tuning point right, and (go figure) my room resonates horribly between 12-16 hz, and then starts to calm down below that. Didn't get any SPL measurements, but driving the Shiva with about 180 watts, I split a picture frame, the sub walked about 2 feet away, and the tube in my PC monitor shifted)
__________________
Bryan
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
I need help on a sweet project mryoumans Everything Else 3 16th April 2008 12:33 PM
Arta is SWEET!! ch83575 Multi-Way 7 23rd February 2007 12:27 AM
InfraSub driver parameters? Hara Subwoofers 18 30th July 2006 06:00 PM
Sweet tweeter Guss Multi-Way 12 6th July 2003 01:28 PM


New To Site? Need Help?

All times are GMT. The time now is 01:33 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2