Seas fa22 - sealed or vented - diyAudio
Go Back   Home > Forums > Loudspeakers > Full Range
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 1st November 2012, 08:04 PM   #1
diyAudio Member
Join Date: Apr 2010
Default Seas fa22 - sealed or vented

I have built a golden ratio sealed box for Seas Fa22 full range drivers. I am happy with the result and they sound good to my ears (even thought they look a bit industrial in their unfinished MDF).

Now, for fun I modelled the box using King's MathCad worksheets, setting the port infinitesimal in the ML TL worksheet, and it looks good. I then started to play around with the port and found that I got a nice flat bass extension into the 40s with a port of r=0.8 in and l=0.7 in (the thickness of the MDF).

The thing I am not sure about: could I just drill a 0.8 in hole in the box and thats my port. Or would such a small port create problems with port noise. Or is the dimension of the port so small it implies a stuffed port, sort of aperiodic?
  Reply With Quote
Old 1st November 2012, 10:30 PM   #2
sreten is offline sreten  United Kingdom
diyAudio Member RIP
Join Date: Nov 2003
Location: Brighton UK

It won't work, port velocity will be too high, you need a bigger longer port.

rgds, sreten.
  Reply With Quote
Old 2nd November 2012, 06:18 PM   #3
diyAudio Member
Join Date: Apr 2010
Thanks for the reply, I should have been able to figure it out my self. I will build ML-TL or ML-TQWT enclosures for the drivers, just need to figure out how to best fold the line to fit them into my room.
  Reply With Quote
Old 2nd November 2012, 09:50 PM   #4
diyAudio Member
Join Date: Oct 2012
golden ratio?

he who has the gold rules!
  Reply With Quote


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
Sealed or Vented, What your take? impsick Car Audio 49 22nd March 2007 08:57 AM

New To Site? Need Help?

All times are GMT. The time now is 11:54 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2