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Ported speakers and class D amps

Been using a pair of 8" 3 way ported bookshelf speakers for 20 years. They are tuned to 34hz. They have always had enough bass, but it has been a little loose. Recently bought a PS Audio S300 class D amp and the bass control is a considerable improvement. Just finished an Orchard Audio Stereo Ultra class D amp tour. Even more woofer control.

When notes drops below the tuning frequency the port can't control the woofer. Does the class D, super high damping factor, mean this isn't as big a problem? I'm hearing bass extension and control that I'd never though possible.

Thanks,

aldnorab 

aldnorab

Showing 2 responses by erik_squires

erik_squires
15,877 posts
 

Of course, it is rare we blow speakers, just saying, that below that frequency the displacement grows very quickly compared to sealed.

erik_squires
15,877 posts
 

It isn't so much that the amp can't control the woofer, it's that the suspension of the air, the springiness vanishes and the woofer's displacment, or motion goes ballistic.  Sometimes literally. :)

In general, Class D amps have fabulous bass. 

My Luxman A/B beats my last class D, but there was nothing wrong with the bass. :)

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