Mine is an old Pioneer 509 VSX 5x100watts with DD/DTS decoder which can also accept 5.1 Analog Inputs for SACD/DVD-A playback. I have 3 different settings 100hz, 150hz and 200hz for the LFE frequency.
Pionner recommends setting it to 200hz for small speakers configuration in its manual (this seems to be contradictory to me) but I set it to 100hz. I wish the receiver could have variable frequency settings because I would like to be able to set it lower than 80hz and not at 100hz. But I have to live with what I have. It will be one of my requirement in future receiver purchase.
So far I have no complains!
Sub is VTF-2 Mk2.