Using KEF LS50 Wireless II with a Subwoofer

Audio Gear Talk KEF
62

Enclosed KEF’s answer to my official inquiry: We are sorry to hear that there are difficulties using your LS50WII / KC62.

The KC62 subwoofer switches on depending on the input level.
It does not have a manual option to switch it on permanently in order to meet the EU directives on energy saving.

The switch-on behavior can also be improved at lower levels with the following “workaround”:

  1. Set the mode switch of the KC62 to “Manual”
  2. In the Connect App, please select the KC62 as the connected subwoofer
  3. Configure the high pass filter in the app to 70 Hz
  4. Set the low pass filter for the sub in the app to 250Hz
  5. Set the crossover control on the subwoofer itself to 45 Hz
  6. Turn the volume control on the subwoofer to the 3 o’clock position

If the switch-on behavior continues to cause problems, you can increase the output level (subwoofer gain) in the app and reduce the volume accordingly with the control on the subwoofer.

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