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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
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Bryston vs LFD, the problem of low power

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  • Bryston vs LFD, the problem of low power

    My story in a few words. Purchased a set of HL5 plus speakers and hooked them up to my NAD C 372 receiver. Nice nice sound.

    Got curious and purchased a Bryston 2.5B SST2 amp and a wow moment! Further curiosity led me to getting an LFD Mark V since I read so many positive reports on the synergy with Harbeth.

    What a disappointment it was for me. Didn't even sound as good as my NAD. The Bryston rated at 135w blew it out of the water. Sent it back very rapidly. The NAD at 150watts did not have the clarity transparency the Bryston has.

    IMHO the LFDs problem was its low power. Alan Shaw is correct. The more the better.
    Now I sorta wished I had gotten the 400 watter Bryston lol.

  • #2
    Big is always better

    Based on my own experience through the years, I assure You that generally speaking, the more the better: this jumped the first time at my ears while comparing two power amplifiers from the same maker and with identical circuitry (Perreaux PMF5150 - 500W/ch versus 2150 - 200W/ch).

    Even playing at low listening levels, the big brother sounded more refined and detailed, less grainy.

    Start considering that beefier amplifiers will normally operate with less stress of their power supply (which seriously influences the overall sound!!!!!) drivers and power devices.

    The above from the point of view of an humble electronic engineer, not an audinut.

    Try, if possible, the big Bryston and let me know!

    Cheers

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    • #3
      Adequate power to drive speakers

      Had a similar experience with C7ES3's and LFD MK V. While music was fantastic at lower listening volumes (<90db), the soundstage began collapsing above that level indicating (to me) LFD is better matched with higher sensitivity speakers. After returning to separates with higher output, music is fantastic again throughout all listening levels.

      The C7ES3's are remarkable.

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      • #4
        The benefits of more power

        I recently replaced my old but refurbished 2x45 watt QUAD 303 with a refurbished 2x140 watt Quad 606 mk2. Playing softly I do not think I could hear much difference, but playing more loudly I certainly could. But what was I hearing? The effect of actually playing louder than I would have done with the 303, or better sound quality at the same loudness? Without a volt meter there is no way of knowing. My hunch is that it is probably a bit of both.

        In the end, that does not bother me, because the room is big (60+ sq m), and I did need more power. Happily also, watts can be cheap. I bought my second hand Q606ii for 350 euro from a retired QUAD NL service engineer who had completely refurbished it. Ready for the next 25 years, as he put it. Admittedly it is a bit challenged cosmetically.

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        • #5
          My LFD

          Originally posted by macroaudio View Post
          Had a similar experience with C7ES3's and LFD MK V. While music was fantastic at lower listening volumes (<90db), the soundstage began collapsing above that level indicating (to me) LFD is better matched with higher sensitivity speakers. After returning to separates with higher output, music is fantastic again throughout all listening levels.

          The C7ES3's are remarkable.
          Here no problems at all with my LFD 0 LE III (min. 50W rms/ch) with C7es3 in my well damped 4x5m room

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