Can anyone give me a list of things to check when it comes to top port noise? I have a HWK10 and HWK12 both quad load with descent speakers and the top speakers are center with the port. Both HWKs are making the same noise but mainly at high volume. Low volume they both play great and load the room pretty good. As soon as you start to crank the volume you can hardly hear the noise. Soon as you get to about 150w or so the noise is easily heard. Both boxes are dead on the specs. and the HWK's top port are slightly bigger(4 5/16 x 7) and the length adjustable. Please give me a list of ever possible thing to check so I can tinker all weekend and get these bean eat'en boxes to quit farting to the music. THANKS for any INFO.

When you say flared port I thinking flared to the outside of the lid? I have heard people using flared ports that are flared on both ends. Also do I need to stay closer to the 4 x 7 port or is a little bigger going to help? Thanks for the reply ADRIAN D.

the precision ports from PE are nice but reather expensive.  If you can swing them go for it.  


Otherwise:

http://www.users.bigpond.com/bcolliso/flares-25mm.htm

the diameter needs to be the same for sure.  As far as length I will have to get back to you, but I believe they overall need to be shorter.  The flare is take into account.

So if I measure from the end of the flare to the other end of the flare I should use the standard measurements(HWK10 4" x 7" and HWK12 4" x 8"). Now I measuring from the lip of each flare not where the flare shrinks down to 4". Do you think this would be a be a good place to start? I will haft to test different lengths ports for my set up but I was needing a good place to start. Besides its easier to cut stuff off than add stuff back to the port. THANKS for the REPLYS.

The site is KIILER! It gives me all kinds of ideas. Do you think some polyfill in the center chamber would help? Thanks for the info. It helps point me in the right direction and own my own I have been lost most of my life. I don't suppose Decware has a lost and found section?  DUH-HUH

HT-EXT,
  I added 1" of standard foam to the underside of my top chamber with favorable results. I cant say that it helped with port noise, because i flared mine from the beginning and never had any. That being said, I think the the sound coming from the port sounds smoother and absorbs some of the ring from the plywood.

HEY  Wreckinthehouse, I would like to talk to you about that plywood ring you mentioned. I though the embarrasing affliction my HWK has was too difficult to explain on a post, so of course if I ignore it, it'll go away, right?  So, adding foam to the inside top is all I (may) need to do to get that sick ringing gone?

Bob