[bazsound]

Hi all,

im testing out room eq wizard getting used to it in a live venue i work.

I dont have a measurement mic yet so im using a condensor with a fairly flat response until i get one so maybe this could be the issue,but i suspect that its something im doing wrong.

baiscally the only filter generated is a fairly large boost at 100hz, knowing this room very well this is the complete opposite youw ould want to do result in immense feedback (100hz is a problem frequency here)

aside from that there are several other "hotspots"

sorry no screenshots as in middle of gig, but have attached mdat.

the USB RTA mic will be purchased soon

 

[JohnM]

Hi. First thing to note is that by default the filters on the EQ window are drawn inverted, that is because if the inverted filter response matches/overlays the measured response the overall result will be flat. You can change that in the controls for the EQ graph, click the cog at the top right of the graph to show the controls. That doesn't explain why you only get one filter though, which is an odd behaviour related to the smoothing applied. If you use 1/12th octave or less all works as it should, at 1/6th or below the filter assignment stops after the first filter. I'll look into that, but in the meantime use less smoothing - for low frequency EQ use either no smoothing or 'variable' smoothing, which applies no smoothing below 100 Hz, 1/3 octave above 10 kHz and varies between 1/48 and 1/3 octave from 100 Hz to 10 kHz, reaching 1/6 octave at 1 kHz. Variable smoothing is recommended for responses that are to be equalised.

Another thing to note is that your target is sitting well below your measurement, so the filters end up acting as a level control to try and drag the overall level down. The target should run more or less through the middle of the response, about 80 dB looks OK for that measurement. You will find the target level control in the Target Settings to the right of the graph. The target also includes some (default) LF boost and HF rolloff which may not be appropriate for that response, set the LF rsise slope and HF fall slope to zero to remove those (you can change the defaults for the target shape in the Equaliser preferences). Here is how the filters look for your measurement with a flat target at 80 dB.