Announcement

Collapse

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}
See more
See less

Speaker excursion limiting

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Speaker excursion limiting

    Desr Harbethians,

    Since a own a pair of P3 ESR speakers I wonder if these speakers offer any protection against clipping? Or is this a non issue and are they capably of handling sudden outburst of high output voltage or current beyond its maximum capability?

  • #2
    Speakers and amps working flat-out

    Originally posted by fred40 View Post
    are they capably of handling sudden outburst of high output voltage or current beyond its maximum capability?
    There are actually 2 questions in your query imo. Clipping is a different issue from this, although it may be related.

    Most speakers do not offer any adequate protection against clipping. Some amplifiers claim to offer protection against clipping. Either way it is an issue, in fact a serious one. Clipping occurs when the voltage rails in your amp cannot meet the requirements of the output stages of your amp*. When this happens, on a waveform, itíll look like the peaks are clipped off on one portion of the signal meaning asymmetry. In short your amp has gone DC (it no longer has the pistonic pattern) causing extreme cone excursion + heat in certain parts. If this unwanted pattern occurs, it will destroy your P3ESRís. The first signs may be distortion from your speakers when your amp can no longer cope, so turn it down. buying a more suitable amp to suit your listening style may be worthwhile exploring if it always distorts (because its too loud).

    Comment


    • #3
      "Power handling? Adequate sir".

      Originally posted by kittykat View Post
      ...Most speakers do not offer any adequate protection against clipping. Some amplifiers claim to offer protection against clipping...The first signs may be distortion from your speakers when your amp can no longer cope, so turn it down. buying a more suitable amp to suit your listening style may be worthwhile exploring if it always distorts (because its too loud).
      In updating the Harbeth Spares Matrix today I enquired about the call for spare parts for the P3ESR, in production for twenty three months. We are not aware of even one part being required. So although the power handling capacity of a small speaker is inevitably limited (by physics) the reality is that the power handling is adequate. Adequate for our customers and the use that they put the speaker to.
      Alan A. Shaw
      Designer, owner
      Harbeth Audio UK

      Comment


      • #4
        A little gentle head-banging .... but be sensible!

        You need to be sensible with volume levels and turn down the amp a notch or two if audible distortion occurs. This can happen with all/any speakers whether large or small. If a little care is taken, you are unlikely to ever cause any damage.

        I have been demonstrating speakers for decades now and have never been responsible for any over-driven speakers or damaged speakers even though the matching amps are often many times more powerful than the speaker specification recommends. Indeed, it is often stated that a low powered amp is more likely to cause damage when over-driven than a powerful amp.

        I often drive the P3ESR's to quite high volume levels and they never show any signs of distress. I doubt there would ever be a problem under normal domestic conditions, even when going in for a little gentle 'head banging'.

        Comment

        Working...
        X