Announcement

Collapse

INTRODUCTION - PLEASE READ FIRST TO UNDERSTAND THIS FORUM!

"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
See more
See less

P3ESR and wall treatment directly behind speakers

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

  • P3ESR and wall treatment directly behind speakers

    Hi,
    I did a few searches and poked about the forums a bit to see if I could find anything definitive on how the P3's respond to acoustical wall treatment directly behind them, but couldn't see anything.

    Apologies if I missed a previous post on this.
    I've got enough space in my audio (living) room to let the Harbeth's "breathe" when they arrive next week; about 15" from the rear wall, 40" from the side wall, 9' apart and I'm about 9' seated, in front of them. They'll be on rice-damped Target MR-24 stands.

    This is roughly what my current set-up looks like, only change has been to put the RP6 on a Rega wall shelf.
    Click image for larger version

Name:	8742137009_1bab47efa1_b.jpg
Views:	1
Size:	138.6 KB
ID:	65684
    I probably need a nice big rug to put down on the hardwood to soak up reflections a bit more off the floor, but since that's going to run me about $1,000 to keep my lady happy, it's on hold for a bit, and since my friend can give me some rather nice black, geometric-dimpled acoustical wall panels, I thought I'd give them a try behind the P3's first.

    With the rear-ported B&W's I have presently, I've found the bass tends towards slightly boomy off the rear wall, but I can't pull them out any farther without risking foot traffic mishaps. I can't get the wall panels before the Harbeth's arrive and my CM1's are being picked up tomorrow, so no chance to see if they'd help them either.
    I'm not worried about the P3's sounding good (I know they will!), but since they are sealed (reacting differently, I imagine, to wall placement compared to the ported CM1's) I'd like to do what I can to help the P3's sing their best in my space.
    Any input would be great, many thanks!

  • #2
    Draping cloth on the walls - as effective

    You know how you sometimes are walking along the street and out of sight you hear some youngsters in their car, the stereo playing loud beat music? Then they finally come into view, and at 50 or 100m away the beat causes people to turn and look? You can't hear the middle and top frequencies; you surprise yourself how how much energy bass notes have and how they really 'carry'.

    A skimpy piece of foam, no matter what colour, or how many nice dimples it has, or how expensive, or whatever waffle is written on the pretty carton, is as effective a sound absorber at low frequencies as your wife's stockings. Almost useless.

    If it did absorb LF, then expensive anechoic chambers like this, would not need to be built. Those wedges are as long as they are to absorb low frequencies: for medium and HF, your skimpy foam would do perfectly well.

    Hope that helps.

    "Let's get real about audio" is my new catch phrase!
    Alan A. Shaw
    Designer, owner
    Harbeth Audio UK

    Comment


    • #3
      Tube traps etc.

      Hey Alan, thanks for the response.

      I see your point, and as someone who has experience with audio production that should have been obvious to me.*sigh

      I'll poke around the web and see what turns up on bass traps and room treatments in general.
      Cheers!
      –R


      Originally posted by A.S. View Post
      You know how you sometimes are walking along the street and out of sight you hear some youngsters in their car, the stereo playing loud beat music? Then they finally come into view, and at 50 or 100m away the beat causes people to turn and look? You can't hear the middle and top frequencies; you surprise yourself how how much energy bass notes have and how they really 'carry'.

      A skimpy piece of foam, no matter what colour, or how many nice dimples it has, or how expensive, or whatever waffle is written on the pretty carton, is as effective a sound absorber at low frequencies as your wife's stockings. Almost useless.

      If it did absorb LF, then expensive anechoic chambers like this, would not need to be built. Those wedges are as long as they are to absorb low frequencies: for medium and HF, your skimpy foam would do perfectly well.

      Hope that helps.

      "Let's get real about audio" is my new catch phrase!

      Comment


      • #4
        It's obvious - eventually!

        Originally posted by Rafe Arnot View Post
        Hey Alan, thanks for the response.

        I see your point, and as someone who has experience with audio production that should have been obvious to me.*sigh...
        Almost everything to do with audio is obvious - when it's pointed out. That's audio's greatest strength, and weakness. The qualifications to be deeply involved in audio are zero, and that's a good thing because it opens the door to everyone who is curious about sound. We need to sustain and improve that open access. The flip side is that without a sufficiently objective, rational, science-believing, disciplined membership, those with the most persuasive arguments, the slickest presentation and the best understanding of human consumption psychology have, and will, take maximum advantage of subjectivism.

        We try our very best here to act as a counterweight to that, being as accessible as possible.
        Alan A. Shaw
        Designer, owner
        Harbeth Audio UK

        Comment


        • #5
          Open door

          Amen brother.

          Originally posted by A.S. View Post
          Almost everything to do with audio is obvious - when it's pointed out. That's audio's greatest strength, and weakness. The qualifications to be deeply involved in audio are zero, and that's a good thing because it opens the door to everyone who is curious about sound. We need to sustain and improve that open access. The flip side is that without a sufficiently objective, rational, science-believing, disciplined membership, those with the most persuasive arguments, the slickest presentation and the best understanding of human consumption psychology have, and will, take maximum advantage of subjectivism.

          We try our very best here to act as a counterweight to that, being as accessible as possible.

          Comment

          Working...
          X