Template:L1 Model II Firmware 1.4 B2 Support
This is how to read the Serial Number to tell if your system was shipped with Firmware version 1.4 and System EQ 1.04 (both required to fully support the B2 Bass Module).
Note: The grayed out characters may be different on your system.
If the underlined numbers are lower than 2250 then see L1® Model II Power Stand Firmware Updates