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Russell R · 12-30-2003, 09:56 PM

Hello,
I have been listening to my 142.5|21.5hz Shiva and notice that there is ringing in the enclosure. It is a 14" diameter PVC pipe. What can I use to deadon the enclosure? Egg crate foam or polyfill batting lining the enclosure? How will this affect the overall design?

I placed a Nerf Football in the port to create a sealed sub and I did not notice the ringing. So, what does this mean?

Does sonotube or concrete forms made out of cardboard ring? There is a thread about group delay. Could this be a function of group delay?

Thanks,
Russ

A sealed sub with stuffing does sound good... Maybe a Sealed Tempest or Maelstrom...

I am lik

12-30-2003, 09:56 PM	#1 of 3
Russell R Member Join Date: Feb 2000 Local Time: 10:54 AM Local Date: 12-02-2008 Posts: 79	How to stop the ringing Hello, I have been listening to my 142.5\|21.5hz Shiva and notice that there is ringing in the enclosure. It is a 14" diameter PVC pipe. What can I use to deadon the enclosure? Egg crate foam or polyfill batting lining the enclosure? How will this affect the overall design? I placed a Nerf Football in the port to create a sealed sub and I did not notice the ringing. So, what does this mean? Does sonotube or concrete forms made out of cardboard ring? There is a thread about group delay. Could this be a function of group delay? Thanks, Russ A sealed sub with stuffing does sound good... Maybe a Sealed Tempest or Maelstrom... I am lik Thanks, Russell RODERPLEX Cinema