HUG - here for all audio enthusiasts

At its inception ten years ago, the Harbeth User Group's ambition was to create a lasting knowledge archive. Knowledge is based on facts and observations. Knowledge is timeless, independent of the observer and can be replicated. However, we live in new world in which objective facts have become flexible, personal and debatable. HUG operates in that real world, and that has now been reflected in the structure of HUG.

HUG has two approaches to contributor's Posts. If you, like us, have 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 Science of Audio sub-forum area of HUG is your place. The objective methods of comparing audio equipment under controlled conditions has been thoroughly examined here on HUG and elsewhere and can be readily understood by non-experts and tried-out at home without deep technical knowledge.

Alternatively, if you just like chatting about audio and subjectivity rules for you, then the Subjective Soundings area 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. From Oct. 2016, Posts in the Subjective Soundings area will not be spell checked or adjusted for layout clarity. 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.

The Moderators' decision is final in all matters and Harbeth does not necessarily agree with the contents of any member contributions and has no control over external content.

That's it! Enjoy!

{Updated Jan. 2017}
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Screw Force vs. Performance

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  • Screw Force vs. Performance

    Dear Alan,

    I currently owned M30 & M20 for over 5 year, and they did bring a lot of fun to me, really appreciated.
    Recently, I removed the front cover, and found out that several screws were rusted. (I thought this issue could be caused by the humid weather here.)
    Since my apartment is far away from local dealer, I am considering to replace them by myself.
    The question right now is that: do you have any torque/force requirement to tighten the screw (maybe refer to the production line specification) ?
    My friends always tell me that the force to the screw could affect the performance of the speaker. But I am thinking that unless the screw damage the speaker unit, otherwise, if the screw is carefully tighten, the speaker performance should be the same as before.
    Is that true?
    Thanks for your answer!


  • #2
    Re: Screw Force vs. Performance

    I wouldn't be too concerned about the torque used for tightening those screws. Just make sure that they are reasonably hand tight or tightened with an electric screwdriver on a low-to-medium setting. There is no advantage whatever by over-tightening and you could strip the screw heads which looks ugly and may then shed small metal particles which could work their way into the magnet.

    So, just use common sense. It's rather like changing the wheel on your car: hand tight is much better than machine tight .... especially if you break down at night on an unlit road and just can't budge the machine tight wheel nuts!
    Alan A. Shaw
    Designer, owner
    Harbeth Audio UK