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  1. MarkJD

    Group delay query (Sealed vs vented Tempest sub design)

    Thankyou both for your replies. I guess I could try plugging the ports on my vented subs to check it out. Good thinking dude! :) Question is, as the ports are 8 inch diamater, what can I use to plug them? Thanks Mark
  2. MarkJD

    Group delay query (Sealed vs vented Tempest sub design)

    Hi I'm a complete newbie at this stuff, so please bear with me. I built a couple of vented 300 liter sonosubs tuned to 16Hz based on the Adire Audio "Tempest" driver last year. They sound terrific for home theater. By accident rather than by design, the subs look to be similar in LSPCad's...
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