Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

What happens when a sub is in a corner
What happens when a sub is in a corner
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 15th May 2011, 11:56 AM   #11
djn is offline djn  United States
diyAudio Member
 
djn's Avatar
 
Join Date: Oct 2004
Location: Albuquerque, New Mexico
Thanks guys. I went back over to the new house the other day and just sat in the room and there is plenty of room for placement where I could or could not place any of the subs in corners.

The other thing I was thinking was if I built new speakers and use the Lambda TD15X, I would not need subs in front as they go down well into the 30s and maybe the high 20s if the box is desiged right. If so, they would be out away from the corners just be default.
  Reply With Quote
Old 17th May 2011, 10:42 PM   #12
bentoronto is offline bentoronto  Canada
diyAudio Member
 
Join Date: Jan 2008
Location: Toronto and Delray Beach, FL
What happens when a sub is in a corner
While I agree with the point of TerryO*, like waterfront real-estate, nobody can create any more radiation resistance than a corner can and that's the what I think the biggest challenge is in propagating bass notes into the thin air... so don't squander a corner.

*see my new thread about multiple woofers. The room acoustics are a killer and not clear if exciting them or multiplying them or what is best strategy. Also not entirely convincing that the theory of modal resonances based on gross dimensions in a room matters as much as theory suggests.
__________________
HiFi aspirations since 1957. Currently working on motional feedback again... the final frontier in audio (and just posted data for a folded 17-foot pipe sub)
  Reply With Quote
Old 18th May 2011, 12:42 AM   #13
revboden is offline revboden  United States
diyAudio Member
 
revboden's Avatar
 
Join Date: Feb 2011
What are the walls made of? single sheet drywall is "pretty" transparent to frequencies below 80hz a few bass traps along two adjacent walls will make the room seem larger. I keep my subs 1/6 dimension into the room L/W/H from the corners.
  Reply With Quote
Old 18th May 2011, 02:35 AM   #14
TerryO is offline TerryO  United States
diyAudio Member
 
TerryO's Avatar
 
Join Date: Nov 2002
Location: Seattle,Wash.
Quote:
Originally Posted by bentoronto View Post
While I agree with the point of TerryO*, like waterfront real-estate, nobody can create any more radiation resistance than a corner can and that's the what I think the biggest challenge is in propagating bass notes into the thin air... so don't squander a corner.

*see my new thread about multiple woofers. The room acoustics are a killer and not clear if exciting them or multiplying them or what is best strategy. Also not entirely convincing that the theory of modal resonances based on gross dimensions in a room matters as much as theory suggests.
Ben,

I found your new thread and would suggest that you put in a link for others to use.

Best Regards,
TerryO
__________________
"If you have to ask why, then you're probably on the right track."
quote from Terry Olson's DIYaudio Forum application
  Reply With Quote
Old 18th May 2011, 06:18 AM   #15
bentoronto is offline bentoronto  Canada
diyAudio Member
 
Join Date: Jan 2008
Location: Toronto and Delray Beach, FL
What happens when a sub is in a corner
Link to "mix-and-match subwoofering" thread.
__________________
HiFi aspirations since 1957. Currently working on motional feedback again... the final frontier in audio (and just posted data for a folded 17-foot pipe sub)
  Reply With Quote
Old 18th May 2011, 06:09 PM   #16
djn is offline djn  United States
diyAudio Member
 
djn's Avatar
 
Join Date: Oct 2004
Location: Albuquerque, New Mexico
Quote:
Originally Posted by revboden View Post
What are the walls made of? single sheet drywall is "pretty" transparent to frequencies below 80hz a few bass traps along two adjacent walls will make the room seem larger. I keep my subs 1/6 dimension into the room L/W/H from the corners.
This is the lower level of a tri level so most of the walls are stud and sheetrock with two half walls cinder block.

This will be a dedicated listening room with minimal furnature, my system, and LP storage on the back wall. So I will have a lot of room to play with placement. My system is torn apart and I can't wait to get moved in and playing again.
  Reply With Quote
Old 18th May 2011, 06:21 PM   #17
Wayne Parham is offline Wayne Parham  United States
diyAudio Member
 
Wayne Parham's Avatar
 
Join Date: Feb 2004
Four corners is actually one of Welti's preferred multisub configurations, as is four wall midpoints. Todd Welti was the first proponent of the multisub configuration and has written several papers on the subject.

I often see modes above 100Hz but they seem to be mostly caused by nearest wall self-interference and axial modes from vertical boundaries. It's definitely not a corner thing - it's more like every speaker does it unless it has multiple midwoofers.
__________________
Visit the π Speakers website
High-quality audiophile loudspeakers and kits
  Reply With Quote
Old 18th May 2011, 11:04 PM   #18
djn is offline djn  United States
diyAudio Member
 
djn's Avatar
 
Join Date: Oct 2004
Location: Albuquerque, New Mexico
Well, that is an interesting read Wayne. Seems like you and Earl differ on some points, but what I am getting out of all this is that multiple subs work and I will just have to take a day or two to figure out the best placement for all of them.

I am in the middle of rebuilding my system and have, so far, Heil AMTs for tweets above 7khz, Edgarhorns with JBL 2441s for mids, and 4 good subwoofers.

Whatever I end up with for midbass duty will determine a lot too. If I use the Lambda TD15X, those would actually count as subs too. If I go with a front loaded horn like the midbass horn of an Altec A7 cab, I would certainly need subs.
  Reply With Quote
Old 18th May 2011, 11:26 PM   #19
60ndown is offline 60ndown  United States
diyAudio Member
 
Join Date: Apr 2011
Quote:
Originally Posted by djn View Post
I will just have to take a day or two to figure out the best placement for all of them.
it only takes 20 minutes. put your subwoofers on long wires, play some 'bass strong' music, experiment with placement, you will hear very quickly what works and what doesn't.
  Reply With Quote
Old 18th May 2011, 11:38 PM   #20
revboden is offline revboden  United States
diyAudio Member
 
revboden's Avatar
 
Join Date: Feb 2011
If you have a Lowes near you, I've found that they have a ~9$ sheet 4'X8' sheet acustic panel that works very well to dampen reflections. Wrapped in some fabric (i use thick black fleece) and screwed to the drywall, works wonders.

Last edited by revboden; 18th May 2011 at 11:43 PM.
  Reply With Quote

Reply


What happens when a sub is in a cornerHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Corner speakers GK Multi-Way 17 19th February 2009 04:10 PM
corner enclosures inrank Multi-Way 5 7th December 2007 03:56 PM
Corner Horn tinitus Multi-Way 30 13th December 2006 11:10 PM
Designer's Corner courage Everything Else 3 16th May 2006 09:38 AM
out of the corner.... ChesterFuzzin' Multi-Way 6 6th June 2002 09:13 PM


New To Site? Need Help?

All times are GMT. The time now is 09:08 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki