Enclosure Design & Construction Help Post and discuss your car audio box construction, design, fiberglass and other fabrication questions here.

Ported or Sealed for my Focal Utopia Subs?

Thread Tools
 
Search this Thread
 
Old Apr 19, 2004 | 11:21 AM
  #11  
Grey Z34's Avatar
Thread Starter
50 Watt CAFz'r
 
Joined: Dec 2000
Posts: 125
Post

Should I build one box with a single shared chamber (2 cu.ft) or a chamber for each woofer (1 cu.ft x 2)?

I was thinking of dual chamber cause the box would be stronger.
Old Apr 19, 2004 | 11:25 AM
  #12  
chev2's Avatar
 
Joined: Apr 2000
Posts: 1,220
Post

one big chamber, or seperate chambers wont really make that big of a difference.
Old Apr 19, 2004 | 01:43 PM
  #13  
KillerGrand's Avatar
500 Watt CAFz'r
 
Joined: Apr 2001
Posts: 774
Post

I on a 33vx and is sounds AMAZING in a 40 liter ported box tuned to about 30 hz.
I have never tried it in a sealed box, but Focal definitely recommends porting these subs.
Old Apr 19, 2004 | 01:46 PM
  #14  
chev2's Avatar
 
Joined: Apr 2000
Posts: 1,220
Post

Originally posted by KillerGrand:
but Focal definitely recommends porting these subs.
No they dont.

Some subs they do yes.. Some they dont.

Thats not to say it wouldnt sound good in either though.

[ April 19, 2004, 02:46 PM: Message edited by: chev2 ]
Old Apr 19, 2004 | 02:01 PM
  #15  
KillerGrand's Avatar
500 Watt CAFz'r
 
Joined: Apr 2001
Posts: 774
Post

Originally posted by chev2:
</font><blockquote>quote:</font><hr />Originally posted by KillerGrand:
but Focal definitely recommends porting these subs.
No they dont.

Some subs they do yes.. Some they dont.

Thats not to say it wouldnt sound good in either though.
</font>[/QUOTE]The technical dtata sheet that came with my 33VX specifically states "This subwoofer is designed to reproduce bass frequencies when loaded in a small volume (40 to 70 litre) bass-reflex chamber".
Old Apr 19, 2004 | 02:06 PM
  #16  
chev2's Avatar
 
Joined: Apr 2000
Posts: 1,220
Post

My mistake killer.. I thought you where talking about the 27wx's that greyZ34 owns. The 33VX's (Like any other sub) could/would be different .

[ April 19, 2004, 03:07 PM: Message edited by: chev2 ]
Old Apr 19, 2004 | 02:16 PM
  #17  
Grey Z34's Avatar
Thread Starter
50 Watt CAFz'r
 
Joined: Dec 2000
Posts: 125
Post

This is the only sub of the 3 in the Utopia series that has a sealed and ported recommendation.
Old Apr 19, 2004 | 02:55 PM
  #18  
KillerGrand's Avatar
500 Watt CAFz'r
 
Joined: Apr 2001
Posts: 774
Post

The JMLabs Grand Utopia Be speakers use Utopia woofers in ported enclosures.
http://www.focal-fr.com/fr/home/utopiabe/altobe.htm
If it were my install, I would port them to Focal's specs.
Try it sealed, and if it doesn't turn out, you could always modify the enclosure and port it.
Get ready for the best bass you have EVER heard!
Old Apr 19, 2004 | 03:55 PM
  #19  
Canadian GP's Avatar
50 Watt CAFz'r
iTrader: (1)
 
Joined: Aug 2003
Posts: 321
Post

Who needs a trunk............fibreglass those babies in!! [img]graemlins/beer.gif[/img]
Old Apr 19, 2004 | 04:37 PM
  #20  
Muckaluck's Avatar
50 Watt CAFz'r
 
Joined: May 2003
Posts: 254
Post

Doesn't the amps power get halved when given to both subs? If the amp is 1000 watts then it should give 500 watts to each sub.

Therefore no problem???



All times are GMT -5. The time now is 06:13 AM.