HUG - here for all audio enthusiasts

The Harbeth User Group is the primary channel for public communication with Harbeth's HQ. If you have a 'scientific mind' and are curious about how the ear works, how it can lead us to make the right - and wrong - audio equipment decisions, and about the technical ins and outs of audio equipment, how it's designed and what choices the designer makes, then the factual Science of Audio sub-forum area of HUG is your place. The objective methods of comparing audio equipment under controlled conditions has been thoroughly examined here on HUG and elsewhere and should be accessible to non-experts and able to be tried-out at home without deep technical knowledge. From a design perspective, today's award winning Harbeths could not have been designed any other way.

Alternatively, if you just like chatting about audio and subjectivity rules for you, then the Subjective Soundings area is you. If you are quite set in your subjectivity, then HUG is likely to be a bit too fact based for you, as many of the contributors have maximised their pleasure in home music reproduction by allowing their head to rule their heart. If upon examination we think that Posts are better suited to one sub-forum than than the other, they will be redirected during Moderation, which is applied throughout the site.

Questions and Posts about, for example, 'does amplifier A sounds better than amplifier B' or 'which speaker stands or cables are best' are suitable for the Subjective Soundings area only, although HUG is really not the best place to have these sort of purely subjective airings.

The Moderators' decision is final in all matters and Harbeth does not necessarily agree with the contents of any member contributions, especially in the Subjective Soundings area, and has no control over external content.

That's it! Enjoy!

{Updated Oct. 2017}
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Room Equalization with DIRAC

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  • Room Equalization with DIRAC


    Has anyone used Dirac as room equalization ? (through a Mini DSP or with a MAC/PC). I'd be interested to see your results or your target curves. I don't know if posting graphs here is permitted as it might be interpreted inappropriately. I've read here that some consider a flat target curve as desirable, at least in the LF at the listening position. But I have found information elsewhere that a slightly decreasing curve towards HF is preferable to a flat one (I should mention at the listening position). Until now, I have a flat curve for LF and I follow the speakers response for HF. But I'd be interested to have your views.

    Thank you

  • #2
    We used DIRAC at the Bristol show, 2015? You'll find a discussion here on HUG.
    Alan A. Shaw
    Designer, owner
    Harbeth Audio UK


    • #3
      If I remember correctly, it was Dirac through a Mac/PC, rather than Mini-DSP, and the gist of Alan's comment was that it's a great tool, but so powerful (and with so many variables to adjust) that a novice user might find it hard to make good use of it.

      That's from memory - because I couldn't actually locate the discussion thread on HUG. I searched by using the 'Advanced Search' function and putting the word "Dirac" in the "Keywords" box. That produced only the two posts immediately above. Thinking that the search might be time-delimited, I entered the date range January 1, 2015 - present, and got no better results. And when I performed similar searches for "Bristol," nothing came back related to Bristol 2015 (even thought I know there was substantial discussion at the time, as Alan indicates). Not sure if this is a flaw with the user (me) or the "Search" function on HUG.

      By the way, I've been intrigued by the Mini-DSP Dirac system, too (as well as other room equalization systems), but that is a project that will have to stay on "hold" until another day.


      • #4
        Indeed, the search function does not work very succesfully. Searching from outside, using Google, is far more effective. As for room equalization, I have been a very happy user of the Antimode 8033 unit to equalize my subwoofer. The advantage is that it is very easy to use. The limitation is that it only equalizes the subwoofer. On the other hand, from what I read, it is precisely the lowest frequencies that need equalization the most, and that room equalization becomes more and more listening position specific the higher the frequency.


        • #5
          I think the discussion about Dirac at the Bristol show is here :


          • #6
            Interesting document that Dirac provided me about the target curve.