No change after BFD...

[mlmore]

Thanks to all of you who helped my fix the ground loop issue. Now I seem to be in need of help with the BFD. I tested the sub with REW, applied the filters, reran the test with the filters active and I see very little change to the overall plot. I'm sure I am missing something obvious to you all, so feel free to point out my ignorance!

[brucek]

How did you load the filters into the BFD - midi ?

Is the IN/OUT green LED steady on?

brucek

[mlmore]

I loaded them manually...no midi. The green light is on.

I read the instructions thoroughly. I set the input level. Used preset 5 to store the three filters suggested by REW. The three LEDs are lit. The left channel is used (output 1). I'm set to preset 5.

I think it's working somehow because if I crank the gain up in the 40-50Hz range, I can here more buzzing from my sub (I still have a little hum). But the REW plots barely budge when I rerun the test.

[brucek]

Easy to check.

Play a 40Hz tone with REW and manually add a 40Hz filter with a cut of -48dB. Turn the filter on and off and listen. You'll know if it's working. If it's not, then something is probably not set up or hooked up correctly.

brucek

[mlmore]

I should have paid attention to the little kHz indicator when I programmed the filters. Your test worked like a charm.

[brucek]

I should have paid attention to the little kHz indicator when I programmed the filters

Don't feel special. That's a real common mistake......

brucek