Active Sub-Woofer and Controller

Published:2012/10/25 2:27:00 Author:muriel | Keyword: Active Sub-Woofer, Controller | From:SeekIC

The controller is quite (actually very) simple, and the circuit is shown in Figure 1. An input buffer ensures that the input impedance of the source does not affect the integrator performance, and allows summing of left and right channels without any crosstalk. The output provides a phase reversal switch, so that the sub can be properly phased to the rest of the system. If the mid-bass disappears as you advance the level control, then the phase is wrong, so just switch to the opposite position.



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