It would appear that way "by the numbers". what about real listening though? Also, the PSB lists for $699 whereas the LFM-1 is $579. I have an older version of the PSB, the Subsonic 3, which uses a 12" driver and a 180watt amp, and a list price of $799. I wonder how much improvement there would be going to the LFM-1 today compared to this 10-year old? It is rated to 25hz(though I forget the +/-db's), and can rattle anything not nailed down!