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HUG - here for all audio enthusiasts

Since its inception ten years ago, the Harbeth User Group's ambition has been to create a lasting knowledge archive. Knowledge is based on facts and observations. Knowledge is timeless. Knowledge is human independent and replicatable. However, we live in new world where thanks to social media, 'facts' have become flexible and personal. HUG operates in that real world.

HUG has two approaches to contributor's Posts. If you have, like us, a scientific mind and are curious about how the ear works, how it can lead us to make the right - and wrong - decisions, and about the technical ins and outs of audio equipment, how it's designed and what choices the designer makes, then the factual area of HUG is for you. The objective methods of comparing audio equipment under controlled conditions has been thoroughly examined here on HUG and elsewhere and can be easily understood and tried with negligible technical knowledge.

Alternatively, if you just like chatting about audio and subjectivity rules for you, then the Subjective Soundings sub-forum is you. 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.

The Moderators' decision is final in all matters regarding what appears here. That said, very few Posts are rejected. HUG Moderation individually spell and layout checks Posts for clarity but due to the workload, Posts in the Subjective Soundings area, from Oct. 2016 will not be. We regret that but we are unable to accept Posts that present what we consider to be free advertising for products that Harbeth does not make.

That's it! Enjoy!

{Updated Nov. 2016A}
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A speaker's life

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  • A speaker's life

    I own a pair of Harbeth c7, the original non SE , dated 1996. I wonder if their beautiful sound qualities will remain unaltered in time, or will they sound different in the next 10- 15 years or more? Is there an answer? Thank you

  • #2
    Re: A speaker's life

    :-) if you listen to it everyday or often, it will sound the same. :-)

    Speakers are physical and are made of things which deteriorate, the rubber surrounds on the woofers, the capacitors but truth to be honest, i have a pair of 18 year old Rogers and i cant hear a difference since i got them.

    Speakers can do with a bit of maintenance though and ill probably get shot here for saying this... if you are brave and you take out the rear binding posts and the bit with the crossover, wipe it with a white cloth after 15 years, that cloth will be soiled (oxidised material). if you plug the whole thing back together, your speakers will sound different i promise...almost like new, all things equal. but our ears would have changed after 15 years,

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    • #3
      Re: A speaker's life

      As a generalisation, speakers are reliable providing that they are treated with respect. The soft parts - as you say, rubber surround etc. - are the most vulnerable.

      Personally, I'd just leave them alone to age gracefully. If the speakers are in storage and not in use for months/years I'd turn them upside down to even out the pull of gravity on the voice coil. A nice wipe down with a barely wet cloth over the veneer every year or so should keep them looking fresh. You're right - our ears probably age more than the speakers, certainly over 15-20 years (sadly).
      Alan A. Shaw
      Designer, owner
      Harbeth Audio UK

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      • #4
        Re: A speaker's life

        Thank you, I will follow your suggestion!

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        • #5
          Re: A speaker's life

          P.S.

          Do not press, push or tap or knock the bass unit or tweeter cones
          Alan A. Shaw
          Designer, owner
          Harbeth Audio UK

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          • #6
            Re: A speaker's life

            Thank you Alan for your reply, actually I was a bit worried about some replacement of capacitors or other parts of the speakers, but as long as you don?t see the need of it, that?s all right with me!

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            • #7
              Re: A speaker's life

              No problem. As a matter of policy, we try to use super long-life 'traditional' capacitors wherever we can even though we need to bank many of them together to achieve the total capacitance value we need. For example, on the P3ESR circuit board (see bottom still picture here) in the top-middle of the board there is a group of four very large (red-brown) dry-film capacitors, total value 40uF (4 x 10u) when one small 40uF 'modern' capacitor could have been used. We had the board area available so I decided to use the traditional polyesters. They should last virtually forever, certainly more than a human lifetime.

              When not constrained by cost or size, the designer has a free-hand to design for longevity.
              Alan A. Shaw
              Designer, owner
              Harbeth Audio UK

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              • #8
                Re: A speaker's life

                I am old compact 7 owner too. Many thanks for this thread. I own a pair of SHL5 too, the C7 sound still keep impressed me when ever I listen to it.
                "Bath with Music"

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