Room correction with Classé Sigma SSP: so many things to mess with!

[Alexandre]

Hi there,

First of all, my apologies if this has been answered before, feel free to scowl at me and point me to the right thread.

I recently acquired a Classé Sigma SSP, which I really like, and I'm starting to think about messing with the awesomely advanced settings and now comes the scary part, I don't understand half of what those settings mean.

Is there a good resource somewhere that explains the technical aspects and meanings of the different settings.

I'd also love to see what people use for measuring hardware and software.

Thanks!

 

[WaynePflughaupt]

Room EQ Wizard, a measurement program, can be downloaded for free at the Home Theater Shack forum. You’ll also need additional hardware such as a calibrated measurement mic.

This Forum is a good source to learn what all that technical stuff means, but we’d need to know what “half” it is that you’re confused about. A link to an owner’s manual would be helpful as well.

Regards,
Wayne A. Pflughaupt

 

[Alexandre]

Thanks Wayne and you're right, I should be a bit clearer…

So, I did download REW (and used it to assign levels to the different channels) and I have a calibrated measurement mic (Dayton Audio UMM-6) which I used for some testing and to play with Dirac's room correction (which is impressive by the way).

Now, the Sigma SSP has a 9 band per channel parametric EQ…

Here is the manual: http://www.classeaudio.com/pdfs/Owners_manuals/Sigma-SSP_ENG.pdf
Page 42 shows the settings.

In short: per channel, there are 9 assignable filters with assignable "center frequency", gain, and filter Q. I think I understand what the first 2 mean but the last one is not clear to me. I also a little unclear as to where to start and where to go from there.

Cheers,
Alex.

 

[gene]

Q = Fc / BW
BW = (f2-f1)
Fc can also be represented as fo

see: http://www.audioholics.com/subwoofer-setup/multiple-subwoofer-setup-calibration-1/FilterQ.gif/image_view_fullscreen

 

[Alexandre]

Q = Fc / BW
BW = (f2-f1)
Fc can also be represented as fo

see: http://www.audioholics.com/subwoofer-setup/multiple-subwoofer-setup-calibration-1/FilterQ.gif/image_view_fullscreen

Oh, neat! So, if I got that right, Q represents how "wide" the filter is, or rather the inverse of the width… The Sigma lets you adjust Q from 1 to 20 which, at 100Hz, would represent a BW between 100Hz (a pretty wide filter) and 5Hz (a pretty narrow filter).

Is that right?