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the12volt`s installbay - Mobile Electronics Forums the12volt's install bay / Fiberglass, Fabrication, and Interiors

Subject Topic: port volume

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jphill68
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Posted: July 25, 2011 at 4:14 AM - IP Logged
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If I have two subs that are in one chamber and share one port, should that port be twice the volume as recommended by the manufacturer? Or, should be the same volume as the manufacturer recommends for a single sub?
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toy civic
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Posted: December 06, 2011 at 9:36 PM - IP Logged
Link to Post  Post Reply Quote toy civic

With two subs, volume is not the issue as much as the port surface area.

The port surface area must be 25% of the total surface area of the subwoofer(s). This is to prevent port noise and acheive the prope vent mach number.

Once surface area is calculated, then calculate the port volume based off of internal box volume..
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the12volt.com - Free Technical Information for Mobile Electronics Installers since 1999
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Basics • Car Audio • Car Security • Cruise Controls • Diodes • Door Locks • Ohm's Law • Passive Crossovers • Relays • Resistors • Subwoofer Enclosures Search
the12volt.com - Free Technical Information for Mobile Electronics Installers
the12volt.com - Free Technical Information for Mobile Electronics Installers
the12volt.com - Free Technical Information for Mobile Electronics Installers
Application Guides • Calculators, Charts, Diagrams • Downloads/Manuals • Find Installers • Forums • Glossary • Subwoofer Wiring • Tools • Vehicle Wiring Recent Topics
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