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About davewantsmoore

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    Log! It's big, it's heavy, it's wood.
  • Birthday October 16

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  1. Keith_W system

    There are only two possibilities here. Either you do no know how to measure what you are hearing, or what you are 'hearing' doesn't exist. If you can narrow in on a specific frequency band, then that will help a lot to then poke into some measurements to identify what is happening. Anything that you can clearly hear, will be clearly present in measurement data - it will just need to be the right stimulus, viewed in the right way.
  2. Keith_W system

    Is the noise audible when nothing is playing? .... or does it only happen with the sound?
  3. Keith_W system

    If this is an actual audible distortion, like a buzzing/click/pop, etc.... then it is almost -always- a driver/configuration issue.
  4. Keith_W system

    That is over simplifying it somewhat.... but the point is that it is hard to generalise. It depends on how sensitive your DAC is to unwanted electrical signals (via the mains and digital connection), and to the quality of the digital signal itself. DACs vary widely in this regard.
  5. What makes a good soundstage for speakers?

    Equal frequency and phase response for the L and R speaker.
  6. FS: NAKSA 100 Power Amplifier (Hugh Dean, Aspen Amplifiers)

    Added internal pictures. Please PM with any questions or offers.
  7. Perth - Whats a sub box actually cost to build?

    Time is money. People need to charge themselves out for quite a high hourly rate to get ahead ..... that is where all your money is going. $150 on parts, the rest labour.
  8. Help building first set of floor standers?

    TBH, access to the software and equipment is trivial (you can download it for free, and buy it at a shop easy). It's what to do with it first. I guess it's the difference between "speaker building" and "speaker designing". Do Jaycar (or someone) offer a ready made design with those drivers? If so, then follow those instructions (on enclosure size, driver layout, and crossover components). Otherwise... by best advice to OP is to look for a ready made DIY recipe.... sell the drivers you have, buy the drivers and bits required for the recipe, and follow the instructions. Something by Zaph, or Paul Carmoody, or similar.
  9. The Twins

    Any change to the frequency response changes the group delay. (Becuase group delay represents a non-flat frequency transfer function).
  10. The Twins

    Caotings and damping material are overrated for this problem. More bracing, or thicker walls is the #1 plan. To improve.... join all the walls to each other much more. Eg. much more bracing which connects the side walls to each other, and the back wall to the baffle, etc.
  11. The Twins

    That is good.... as the energy transmitted by the speaker driver also reduces as the frequency rises
  12. The Twins

    Why do you say that? If the frequency response is flatter, then so will the GD be. From WinISD perspective, anything which will be "fixed" by adding mms, means there is something off in your enclosure design. In blunt terms, more mms is just going reduce your sensitivity.... it won't hurt much, but it's not a very good 'fix'. Pretty sure that was to do with adding damping to the cone, rather than mass (?!)
  13. The Twins

    On the box tab, click the advanced button - it models the enclosure losses.