Date: August 03, 2003 at 22:08:53 From: Brian, [206-48-63-219.caribsurf.com] Subject: Re: building new box for very old jcpenny stereo need hlp!
>just riped the mesh and found the there was a cone >not speaker but the foam was rotten so it fell back >so it was covered
Sounds like a passive radiator design.
You can replace the passive radiator with a vent. To calculate the best vent diameter and length to use, you need to determine (1) the t/s parameters for the driver, and (2) the internal volume of the speaker cabinet.