WaveLab 5.0: how do I roll-off/trim bass?

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I've tried some of the "limiters" in Process>Dynamics>Presets>Hard and Soft Limiters but that brings all the levels down. Is it possible to roll-off or trim bass with this program? Thanks... Steve

[fsulloway]

Use the Master Section. click on "1" under the effects part of the mastering box. Click on "VST" then "Q". You can play with the dials from there.