Interpreting the Dirac results. (Beginners)

[sveb]

Hello everybody.

I wonder if any of you have any suggestions on what to do? As you will see, I lack of midbass and I am not sure what I should do about it. I have the Dirac Le, and have not bought the full version yet. Can do if I need to.

I have Klipsch speakers, Rf7 mk2 as fronts. The one peak on the right speaker in 36 hz I think are reflections but I cross over higher.
Center are Rc64 mk and surrounds are Rs52 mk2.
I use a Svs Pc-13 ultra(750w) as sub.

Thank you.

Attachments:

[ericl]

Hi sveb.  I am basing my response on just your first & last graphs.  Looking at the last graph (impulse response) there are some late reflections at about 10 milliseconds (ms) after the first impulse.  Sound travels at around 1 for per ms, so these reflections are coming from a wall 10 feet in front of the speakers or 5 feet to the side/behind of the speakers.

Perhaps you can confirm these distances?

FYI I have very similar speakers; big woofers that play low & mid & tweeter compression drivers.  The room is very "hard" wood floor nothing on the walls.  The speakers are right in two corners 11 feet apart.  The listening position is 11 ft from each speaker, and where I measured from.  They sound fantastic - I am music only so no sub.

Yes, your lack of mid-bass is a problem.  Dirac has corrected this to within 5db.  Mine correct to within 2db.  It's up to you, but 5db is a lot - you COULD love it & leave it.

My first suspect is the taking of measurements  and I would re-take them:

Make sure that the 2 front speakers & the listening position (lp) are equadistant.
I'd probably toe-in the speakers to directly point the tweeter at the lp
Make sure the mike calibration is correct
Make sure pre-measurement levels are set mid range.
Make sure there are no objects really close to the mike, such as the seat back of a chair/ sofa.

If this does not offer an improvement, change 1 thing at a time & re-measure.

It is possible that your mike and calibration file are not working together properly; this would be an Emotiva support issue.

The full version will not directly offer an improvement - however you COULD (with the full version) drag the entire target curve down so that instead of your mid-bass dips being 15db below target you could make them 10 db (or so) below target if the above steps do not work.  I have the full version & found that when using the XMC-1 loudness button i need a flat target curve otherwise there was too much bass.