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B2 bass level switch does not work | L1™ Model II system
l1™--model-ii-system
L1™ Model II SystemSold from 2007 - 2021

B2 bass level switch does not work | L1™ Model II system

If using the Bose B2 bass module, be sure the power stand firmware is version 1.4 or greater.

For the Bass Level switch on the back of the B2 to work with the L1 model II, the power stand firmware must be version 1.4 or greater. If it's not, the B2 will only work when the Bass Level switch is in the Normal position. The + or – switch positions only work if the power stand firmware is version 1.4 or greater. For more info, see Checking the software or firmware version and Updating the software or firmware of your product.

Note: L1 model II systems with a DOM (date-of-manufacture) of 2285 (12 Oct 2012) will work with the B2 without updating.
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B2 bass level switch does not work | L1™ Model II system