TECHNICAL TALKS - Amplifier Technology and the VHD4.21 Active Subwoofer Electronics

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  • Опубліковано 14 гру 2024

КОМЕНТАРІ • 9

  • @ByronSamuelsIATOLA
    @ByronSamuelsIATOLA 7 років тому +1

    I'm interested in your product for DJ set up can you help me some more is that's the right thing for me

  • @ByronSamuelsIATOLA
    @ByronSamuelsIATOLA 7 років тому

    What is you price on your produc

    • @KV2Audiocom
      @KV2Audiocom  7 років тому +2

      Hi Byron, just get in touch with us through info@kv2audio.com and please leave us with your location (country) so our distributor can get in touch with you. Thank you for your interest.

  • @porkrinds9572
    @porkrinds9572 5 років тому

    Slightly spotty explanations, especially when covering the infamous topic of damping factor. The "host" doing the interview is the worse part to this series & probably not needed. At times the interviewer just gets in the way of a full explaination from this gentleman, whom, I'd thoroughly enjoy listening to if allowed to talk away as he will. Unfortunate these were cuts so short in length.

  • @alvarohernandez1285
    @alvarohernandez1285 7 років тому +1

    Hello there, thanks for the very good explanations about your products as well as other technical topics related to. However based on my 20+ years of experience doing live audio I know for sure some few things that disagree with you guys.
    1.- It is really bad to run an amplifier, name it full range, mid range, high range into 2 ohms load. Even worse for subwoofers, the car audio products run at 2, 1 or even 0.5 ohm load with very bad results even with the use of rigid suspensions a the speaker cone to provide some sort of passive damping factor. The best in my experience is 4 ohm for subs and mids and if possible 8 ohm for highs.
    2.- Amplifiers of class D,H,T or whatever they call to switching amplifiers lack the audio fidelity of Class B amplifiers but they are very energy efficient. Good for subwwofers, their weaknesses can be masked by mids and highs very easy
    3.- Class A, AB with output transformers are good in terms of impedance BUT transformers introduce Harmonic Distortion. Which I think it may be heard on your Super Live Audio system.
    4.- 21 inch subwoofers. The speaker cone is very large and heavy therefore is very hard toy keep it under control, even 18 inch subwoofers are not easy to control but once again, their weaknesses can be masked very easy.
    I´m not criticizing your products, I havn´t used them or listened to yet. The point source technology you developed seem a very clever idea, it´s like having a super large studio monitor without the issues presented by line array technology. hope to have a chance to listen your products soon.
    I hope you have the time to answer my points which in no way are a recipe but a point to start a conversation.
    Sincerely
    Alvaro H Romero

    • @KV2Audiocom
      @KV2Audiocom  7 років тому +11

      Hi Alvaro,
      Thank you for taking the time to comment on our technology. We are open to
      all opinions and you clearly have some technical knowledge or experience
      of other speakers to base these opinions on, which we respect. Beyond that
      technical approach we are also very excited about the opportunity for you
      to actually listen to a KV2 system one day and apply your knowledge to a
      critical but real experience of KV2 technology.
      To cover just a few of your theoretical points, where with respect some of
      your assumptions are not quite correct in relation to our technology and
      design principles.
      ad Q1
      We also agree that where possible the impedance should not be too
      low and that is why in the majority of our point source solutions you will
      find significant use of 16 ohm speakers in order not to load the
      amplifiers too low. For example in VHD 2.0, the two 12” low mids are 16
      ohm speakers in parallel presenting an 8 ohm load which the amplifier can
      drive very effectively. The same for the Midrange and the single HF at 8
      ohms as well. In our smaller ES system the Low Mid actually loads the
      amplifier at 16 ohms, with the Mid and High at 8 ohms each. Again no
      problem. Our subwoofers, for example VHD 2.21 passive double 21”, ES 2.6
      passive double 15” and even the Active EX 2.2 double 12” all use 16 ohm
      speakers to present a combined 8 ohm load to the amplifier. It seems on
      this point we can agree?
      ad Q2
      We also agree that switching amplifiers are not so good for
      situations where true high fidelity is required. That is the reason why we
      avoid them whenever possible in areas of greater sonic importance, for
      example the Midrange and High frequencies of our systems.I think so far we
      have some common ground and beliefs on this as well.
      ad Q3
      As you will be aware there is more than one kind of distortion
      and the benefits of a transformer for reducing the intermodulation
      distortion outweighs any other downside in our own opinion, when driving a
      system hard through critical listening tests. There is also more than one
      kind of Harmonic Distortion and the choices we make in amplifier design
      and loading methodology are aimed at dramatically reducing Third Harmonic
      Distortion. This is SIGNIFICANTLY more audible to the human ear than 2nd
      Harmonic Distortion. In all large scale Audio reproduction systems there
      has to be some compromise in order to achieve the end goal of faithful
      reproduction of the original source, particularly over long distance. Our
      focus has been on minimising those compromises and choosing our areas of
      compromise very carefully to absolutely reduce the AUDIBLE distortion.
      WE ARE MUCH MORE INTERESTED IN WHAT AN EDUCATED PERSON CAN HEAR THAN WHAT HE OR SHE CAN MEASURE!
      We find that the industry has become obsessed with prediction software and
      frequency response curves which tell very little about how a speaker or
      electronics will actually sound in “real life” with a complex signal under
      load. We could play you three different speakers which have an identical
      frequency response, but which sound completely different. Most people are
      shocked by this, because they have grown up surrounded by marketing and
      believing the charts and diagrams will describe perfectly how a system
      will sound. The biggest reason for these anomalies, in so many systems,
      is the lack of attention paid to “Time" You come close to referencing this
      yourself with your point below on the control of large mass speakers and
      how quickly and efficiently both the electronics and the speakers can
      react to a dynamic and musical change.
      ad Q4
      You will have made a friend with George Krampera our Chief
      Engineer as he also believes for accurate reproduction of a bass line the
      speakers would be lighter and faster than a typical 21", like our double
      15’s for example. Sound is subjective though and Bass / Sub even more so.
      With EDM’s increasing popularity there are now so many different
      requirements for Subwoofers and none are specifically right or wrong in
      their own right. Our job as a manufacturer is to offer a complete range of
      solutions from a fast reacting double 12” sub to a lower but arguably
      slightly slower double 21”. That said, we are told by not only KV2 users,
      but also several other manufacturers that our double 21” is the fastest
      they have ever heard. That doest mean to say that it would be your first
      choice, but it does have remarkable articulation for a large mass
      subwoofer.
      To give an analogy, with our double 21” we make one of the most powerful
      Trucks in the world. But if Formula one is your business, you should
      choose something smaller, lighter and more responsive. We also offer those
      solutions and we won’t tell you which one to buy. We would just ask you to
      take the time to listen before making your choice or comment.
      On a final note - With a primary focus of sharing our videos through UA-cam we try to avoid the site becoming a Forum for debating different
      approaches of speaker design. There are many other sites more suitable for
      that. I would like to truly thank you for your time spent watching and
      commenting on our videos, in the end we seem to agree on many points. The
      next step will be when you finally get to hear or use a KV2 Super Live
      Audio system. That should be your primary goal now if you intend to
      continue your research on our company.
      We would also be happy to continue this conversation, via our
      info@kv2audio.com address, if you require any further information once you
      have listened.
      Thank you - Jonathan Reece-Farren on behalf of KV2 Audio.

    • @nikumeru
      @nikumeru 6 років тому +2

      After running sound at several concerts in the past 5 years on ES and VHD systems, owning 6 speakers and their amps from their monitor line, I can say that they make some of the best sounding amps/speakers in the world, they really make your life easy when you run sound at a big concert. About the 21" subs, believe me, they are on par with some of the fastest 18" subs out there.

    • @damaster692
      @damaster692 5 років тому +2

      This sounds like you have used speakers and systems from 40 years ago , you obviously don't know anything about audio or how to run a live sound reinforcement event.. Disregard this guy and delete his comment.

  • @amgineacoustic
    @amgineacoustic 2 роки тому

    "Current" sink has nothing to do with diaphragm control.
    And no the standard for Damping is 400hz
    Lots of word salad here.
    Must be for selling to simpletons.
    KV2 is not all that. No?