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"This Harbeth User Group (HUG) is the Manufacturer's own managed forum dedicated to natural sound from microphone to ear, achievable by recognising and controlling the numerous confounding variables that exist along the audio chain. The Harbeth designer's objective is to make loudspeakers that contribute little of themselves to the music passing through them.

Identifying system components for their sonic neutrality should logically proceed from the interpretation and analysis of their technical, objective performance. Deviations from a flat frequency response at any point along the signal chain from microphone to ear is likely to give an audible sonic personality to the system at your ear; this includes the significant contribution of the listening room itself. To accurately reproduce the recorded sound as Harbeth speakers are designed to do, you would be best advised to select system components (sources, electronics, cables and so on) that do not color the sound before it reaches the speakers.

For example, the design of and interaction between the hifi amplifier and its speaker load can and will alter the sound balance of what you hear. This may or may not be what you wish to achieve, but any deviation from a flat response is a step away from a truly neutral system. HUG has extensively discussed amplifiers and the methods for seeking the most objectively neutral among a plethora of product choices.

HUG specialises in making complex technical matters simple to understand, getting at the repeatable facts in a post-truth environment where objectivity is increasingly ridiculed. With our heritage of natural sound and pragmatic design, HUG is not the best place to discuss non-Harbeth audio components selected, knowingly or not, to introduce a significantly personalised system sound. For that you should do your own research and above all, make the effort to visit an Authorised Dealer and listen to your music at your loudness on your loudspeakers through the various offerings there. There is really no on-line substitute for time invested in a dealer's showroom because 'tuning' your system to taste is such a highly personal matter. Our overall objective here is to empower readers to make the factually best procurement decisions in the interests of lifelike music at home.

Please consider carefully how much you should rely upon and be influenced by the subjective opinions of strangers. Their hearing acuity and taste will be different to yours, as will be their motives and budget, their listening distance, loudness and room treatment, not necessarily leading to appropriate equipment selection and listening satisfaction for you. Always keep in mind that without basic test equipment, subjective opinions will reign unchallenged. With test equipment, universal facts and truths are exposed.

If some of the science behind faithfully reproducing the sound intended by the composer, score, conductor and musicians over Harbeth speakers is your thing, this forum has been helping with that since 2006. If you just want to share your opinions and photos with others then the unrelated Harbeth Speakers Facebook page http://bit.ly/2FEgoAy may be for you. Either way, welcome to the world of Harbeth!"


Feb. 2018
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High displacement at low frequencies

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  • High displacement at low frequencies

    Hi to everybody.

    I have a question that I would like to submit to the people in the forum:

    I have a pair of montior 30.1 connected to a Naim Supernait2 amplifier. This system works for pure music reproduction and is also part of 5.1 AV systems in which the supernait works as power amplifier for the left and right channels of the surround system.

    Watching a movie, during a scene with an explosion, I have noticed a huge displacement of the woofers of the speakers, I think in the subsonic frequency range. I'm not able to quantify the displacement but I think of the order of a centimeter. The motion has gone ahead only for some seconds.

    I would like to know if, in your opinion, this event could have damaged the membrane of the woofer, or modified their frequency response. I have the impression that, after this episode the sound is a little bit less precise and defined in the medium frequency range, but I'm really not sure of this...

    Thanks for your answers and comments.

    Regards,
    Marco

  • #2
    I believe that most mains L/R in 5.1 receive a full range signal. Depending on the volume you were watching, those woofers could have seen a decent level at sub 30Hz.

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    • #3
      Originally posted by The Fall View Post
      I believe that most mains L/R in 5.1 receive a full range signal. Depending on the volume you were watching, those woofers could have seen a decent level at sub 30Hz.
      Yes I think so. Since I have no sub-woofer in my systems, all the low frequencies tracks are sent to the left and right channels. Now I have added a software filter using the AV amplifier to reduce the amount of low frequencies...What I would like to understand, if possible, is if this signal could have created troubles to the woofer of my Harbeth....

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