Polk Audio R200 Bookshelf Speaker Surround Speakers And the port assembly is

And the port assembly is covered by an aluminum mesh grille that allows unrestricted airflow yet prevents intrusion of bugs

the EL509S is very rugged thanks to its robust cathode and associated heating element which produces a high peak plate current capability in excess of 1 Amp

Rubber Feet

Precision Crossovers: Optimized component selection ensures seamless driver integration

Sonance VX66R 6

Polk Audio R200 Bookshelf Speaker Surround Speakers And the port assembly isPolk Audio R200 Bookshelf Speaker Premium Compact Bookshelf Speakers As the larger bookshelf speaker in the series, the R200 excels in delivering extra bass power thanks to its 6. 5 turbine cone woofer and larger cabinetry. Perfect for listening in a stereo pair, as part of a front stage, or as surround components in a larger system. Named Bookshelf Loudspeaker of The Year by The Absolute Sound. Exceptionally impactful bass Smooth midrange and detail