Connecting SUB - High/Low Pass Filters not working.

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Thanks again Ian

I've done all that.  Re-written the SD card.   STILL pushing FULL range through both!


Could there be some software fault?    My Filters just don't appear to be working.

Hmm, seems a bit odd.  Are you sure it's reading your configuration properly?

By the way, not wanting to be funny, but how sure are you that the output is not being filtered?  How about setting up a high-pass filter on the mains with pre-out enabled, full-range with pre-out disabled, temporarily disconnect your sub, and then switch between sub-on and sub-off: you should be able to hear the filters cutting in and out.  If you want to make it more obvious, try raising the corner frequency and/or increasing the slope, just for testing.