This is great news. Many of us DIY subwoofer owners have subs that will go below 15Hz, at least we think we do. We had asked Velodyne to provide an update that would allow a lower frequency if possible and they delivered. If you decide that you want to go with the firmware update you will need a DB9 (RS232) male to female cable which I picked up at the local electronics store for $3.99 (6 foot).

When you run the update it will tell you: "Welcome to the SMS-1 Version 2.12 Update Utility. Please connect a "Mouse Extension" serial cable from a serial port on your computer to the RS-232 IN jack on the back of your SMS-1. Then turn the unit off and back on while holding down BOTH the UP and DOWN volume buttons on the front panel."