Closed or Vented box? - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

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 21st July 2010, 06:24 PM   #1
Audist is offline Audist  United States
diyAudio Member
 
Join Date: Dec 2004
Location: N/A
Default Closed or Vented box?

Hi.

I want to build a box to my Morel UW1058.
This woofer can play in vented box and with close box.

In the closed box, I need around only 40 liter to get 44Hz/-3dB and 27Hz/-8dB.(not in room)

With 50 liter vented box the bass come to 25Hz/-3dB and 17Hz/-8dB. (not in room)

Most people say that closed box sound better with better slam and dynamic.

So what is better?
close or vented?

Thank you.
  Reply With Quote
Old 21st July 2010, 07:59 PM   #2
Dr_EM is offline Dr_EM  United Kingdom
diyAudio Member
 
Dr_EM's Avatar
 
Join Date: Oct 2006
Location: Swindon
I'd go with closed because once you add room gain you can expect boost in the lower end. The rate of gain tends to more closely match that of a closed box than a vented box. With a vented box you might end up with a "hump" in the response near the low end where room gain has acted on an already flat output which has then dropped away quite sharply.

I'm using closed boxes with -3dB at 57Hz (-10dB at 33Hz) in a small room and it doesn't sound like anything is missing, great dynamics. Yours should sound great in a larger room
  Reply With Quote
Old 21st July 2010, 11:15 PM   #3
Audist is offline Audist  United States
diyAudio Member
 
Join Date: Dec 2004
Location: N/A
Dr.EM,

Thank you
  Reply With Quote
Old 22nd July 2010, 12:02 AM   #4
a.wayne is offline a.wayne  United States
Sin Bin
 
Join Date: May 2008
Location: Front Row Center
Quote:
Originally Posted by Audist View Post
Hi.

I want to build a box to my Morel UW1058.
This woofer can play in vented box and with close box.

In the closed box, I need around only 40 liter to get 44Hz/-3dB and 27Hz/-8dB.(not in room)

With 50 liter vented box the bass come to 25Hz/-3dB and 17Hz/-8dB. (not in room)

Most people say that closed box sound better with better slam and dynamic.

So what is better?
close or vented?

Thank you.
what is the Qts ?
  Reply With Quote
Old 22nd July 2010, 12:27 AM   #5
dooper is offline dooper  Canada
diyAudio Member
 
Join Date: Jan 2004
Location: Canada
Quote:
Originally Posted by a.wayne View Post
what is the Qts ?
Morel says the Qts=0.43.
  Reply With Quote
Old 22nd July 2010, 12:41 AM   #6
a.wayne is offline a.wayne  United States
Sin Bin
 
Join Date: May 2008
Location: Front Row Center
Manufactures usually quote lower numbers than when measured, with such a high Qts i would go sealed .....

That aside and in answering your question, Vented enclosures sound more natural than sealed with better dynamics, speed and slam ..... IMO ... Of course horses for courses and in certain applications there could be an advantage with going sealed ( small room ) .

Last edited by a.wayne; 22nd July 2010 at 12:48 AM.
  Reply With Quote
Old 22nd July 2010, 12:46 AM   #7
zobsky is offline zobsky  India
diyAudio Member
 
zobsky's Avatar
 
Join Date: Mar 2002
Location: Dallas, Tx, USA
why not build 50 l sealed, and experiment with sealed / vented / aperiodic to decide what you like

personally, if you can get the ported box tuned right, it should sound more dynamic whereas the sealed would be more accurate, the aperiodic should be somewhere in between




Is this for home theater or music
__________________
"Any fool can know. The point is to understand" - Albert Einstein
  Reply With Quote
Old 22nd July 2010, 12:55 AM   #8
diyAudio Member
 
David Gatti's Avatar
 
Join Date: Mar 2004
Location: Melbourne, Australia
I'm using the Morel UW1258 in a 40 litre sealed box, and it sounds awesome.
  Reply With Quote
Old 22nd July 2010, 10:29 AM   #9
Audist is offline Audist  United States
diyAudio Member
 
Join Date: Dec 2004
Location: N/A
Quote:
Originally Posted by zobsky View Post
why not build 50 l sealed, and experiment with sealed / vented / aperiodic to decide what you like

personally, if you can get the ported box tuned right, it should sound more dynamic whereas the sealed would be more accurate, the aperiodic should be somewhere in between




Is this for home theater or music
I think I change my UW1058 to UW1258 because the sensitivity.
So with the 12" i need only sealed.

And this speakers for music.

Ideas?
  Reply With Quote
Old 22nd July 2010, 10:35 AM   #10
Audist is offline Audist  United States
diyAudio Member
 
Join Date: Dec 2004
Location: N/A
Quote:
Originally Posted by David Gatti View Post
I'm using the Morel UW1258 in a 40 litre sealed box, and it sounds awesome.
Hi David,

You got good bynamic, slam and details from the UW1258 with sealed box?

This for Home Theater or Music?
Sub or 2.5 / 3 way design?

Thank you
  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
Closed or vented? e-side Multi-Way 28 9th January 2006 03:14 AM
New Vented/Closed Spreadsheet gregorx Multi-Way 6 25th July 2003 06:54 AM
Closed box sub in vented box ? MadMax Multi-Way 3 17th May 2003 12:24 AM


New To Site? Need Help?

All times are GMT. The time now is 11:02 AM.


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