I don't think you can match the bass in about any organ piece by Bach.  The obvious choice would be to start with a good recording of Bach's Toccata and Fugue in D Minor.  Beyond the ultra-low bass of the biggest organ pipes, you have the fact that the bass notes take a really long time to decay...

Quote:   Your price analysis may not be valid anymore.  I bought a pair of HD595's from Amazon on January 30 for $129 (US).  The price has gone up to $149.99 since then, but I'd bet it will go down again.  Amazon is selling the HD555's for $84.99 at the moment.