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  • The Technology Behind ATC Loudspeakers With Brad Lunde

    I stumbled across an interview with Brad Lunde (TransAudio, USA), probably from some time in 2021 which illustrates what ATC is about. It's quite long but I found it fascinating (YMMV of course). He speaks very coherently. The following points are some paraphrased take-aways:
    TransAudio is a distributor – an extension of the factory and factory support in USA.

    ATC is science-based – not interested in spending R&D money on marketing-driven development.

    Ben Lilly does work on sales but is really in engineering with Richard Newman.

    It takes 5 – 7 years to develop something new. Richard Newman once had 100 different hand-built prototype models of the ATC tweeter. The engineering approach is to hear what’s wrong and fix it. Progress addresses “what does an existing product/component do wrong?” It’s a lot about materials.

    What about cost constraints? No - engineering comes first and it costs what it costs for the desired performance – OEM drivers are now used commonly elsewhere in the industry but will have their cost constraints. Others makers are not wrong – they just make different products.

    ATC’s goal is for the entire loudspeaker range to not differ surprisingly. Just more dynamic range (louder) and lower frequency handling as size goes up. Distortion is a blanket covering up resolution. Designing to be distortion-free on peaks preserves low level resolution. There’s still a high-output OEM tweeter in the SCM200/300 – there is work in ATC on one for super-high audio level – probably the next development to come out or perhaps a smaller subwoofer.

    Turnover outside USA is about 50% hifi and 50% pro (hifi not as strong in USA).

    In recent years, sales (US pro I assume) have exploded (esp. SCM25A) as people (in pro audio I assume) have worked from home; but there have been transport delays because of fewer flights – and production delays from half-staff social distancing in the factory. (But in a previous post I noted that these problems have seem now to have improved.)

    My apologies if I have mis-represented anything.


  • #2
    Thanks for the link. ATC's engineering integrity is without equal. Brad Lunde's enthusiasm for ATC products is infectious.

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    • #3
      Originally posted by Bulldog View Post
      ... ATC's engineering integrity is without equal. Brad Lunde's enthusiasm for ATC products is infectious.
      Yes and yes. Coming from an engineering career the combination resonates very well with me.

      I didn't know much about ATC's strong engineering-led approach when found I had a very local dealer, auditioned and bought my SCM50A classics (and a CDA2 mk2). However, I think the purchase turned out to be very wise and highly satisfactory in the face of what I see as a lot of non-engineering non-sense from quite a few parts of the consumer audio industry.

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      • #4
        Thanks jophill for the post. I need to find some time to watch it.

        However, did I read that right? The SCM300ASLT and SCM200ASLT have 3rd party tweeters?

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        • #5
          Interesting. The new tweeters for the SCM300ASLT and SCM200ASLT must be a work in progress. It doesn't surprise me. The demands on the tweeters for these particular speakers must be exponentially greater and therefore require signification engineering to get them right.

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          • #6
            Originally posted by QuiteLikesMusic View Post
            Thanks jophill for the post. I need to find some time to watch it.

            However, did I read that right? The SCM300ASLT and SCM200ASLT have 3rd party tweeters?
            I enjoyed it as I have been in professional engineering and I find Brad Lunde to be a refreshing voice in a business where the non-engineer consumer is regaled with and often persuaded by a lot of questionable marketing. If someone is not into the good engineering side of hifi it may not land as well.

            On the third-party tweeter, it seems to be so, but beware that Brad Lunde may be referring to the professional models not the consumer hifi models. Also note that the video is about 2 years old.

            Just after 53:00 in the video Brad says the SCM300 uses an Audax tweeter and later he talks of SCM200 too. He may be talking of the professional versions. Looking at the ATC product pages I see the professional models specified as having a 34 mm tweeter (as per the video). However, the consumer hifi SCM200 and SCM300 towers are listed as having a 25 mm tweeter, although it does not specify that it is an ATC tweeter. So maybe the comment does not apply exactly in the consumer hifi domain.

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