Welcome, Guest. Please Login or Register
Decware Audio Forums
07/28/14 at 13:22:05


Pages: 1
Send Topic Print
Port side and sealed side ??? (Read 1478 times)
HT-EXT
Ex Member



Port side and sealed side ???
12/21/05 at 12:08:20
 
The port opening has to be 1.25" from the walls for best performance. I would like to use some extra bracing in the first corner after the port. I want to know if the port should maintain 1.25" distance away from the brace and wall until it starts to flare into the horn. Does smoothing the sharp edges inside the horn help? Also when clamshelling speakers how does that affect the Vas? YES I'm a stup! How do I determine the size of the sealed section with the Vas of the speaker especially if I'm clamshelling? Too much whiskey in the early years has limited my IQ. ALL HELP APPRECIATED.
Back to top
 
 
  IP Logged
60ndown
Ex Member



Re: Port side and sealed side ???
Reply #1 - 12/21/05 at 14:25:51
 
bearing in mind i dont know much, ???

rounding edges  'a little' is a good idea but try to keep the gap about 1.25, unless you are going to use 2000 watts or more and high excursion drivers, then you could maybe open the gap to about 1.75 or 2 to avoid any chance of port noise?  clasmshelling is like haveing 2 motors in 1 car-performance gets real 'snappy', personally i wouldnt make the sealed end any smaller, the more space you have back there the lower it will play.
Back to top
 
 
  IP Logged
DirtDawg
Ex Member



Re: Port side and sealed side ???
Reply #2 - 12/21/05 at 14:53:38
 
[quote author=HT-EXT  link=1135170500/0#0 date=1135166900]..... Also when clamshelling speakers how does that affect the Vas? ..... [/quote]
In theory, the Vas is cut in half when you clamshell. I clamshelled 4 matching drivers in one WO and did not re-adjust any volumes and it was still a vast improvement in tight, controlled bass at high power levels. Not very noticeable at first when played at low power levels. When you really push them, the clamshelling helps control pulse transient "over rings" very well.
Back to top
 
 
  IP Logged
HT-EXT
Ex Member



Re: Port side and sealed side ???
Reply #3 - 12/21/05 at 15:22:26
 
Thanks 60 and DirtDawg you two have been a big help. I try to do things right the first time and asking questions is the only way to learn. THANKS FOR THE HELP.
Back to top
 
 
  IP Logged
60ndown
Ex Member



Re: Port side and sealed side ???
Reply #4 - 12/21/05 at 19:56:52
 
[quote author=DirtDawg  link=1135170500/0#2 date=1135176818]
pulse transient "over rings" very well. [/quote]

sounds real sexy, wonder what it means Roll Eyes
Back to top
 
 
  IP Logged
60ndown
Ex Member



Re: Port side and sealed side ???
Reply #5 - 12/21/05 at 19:58:12
 
[quote author=HT-EXT  link=1135170500/0#3 date=1135178546]Thanks 60 and DirtDawg you two have been a big help. I try to do things right the first time and asking questions is the only way to learn. THANKS FOR THE HELP. [/quote]

keep asking Grin
Back to top
 
 
  IP Logged
Pages: 1
Send Topic Print