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HUG - here for all audio enthusiasts

INTRODUCTION- PLEASE READ FIRST TO UNDERSTAND THIS FORUM!

"This Harbeth User Group (HUG) is the Manufacturer's own managed forum dedicated to natural sound, realisable by controlling the confounding variables between tthe microphone and the listeners' ears.

For example, the design of and interaction between the hifi amplifier and its speaker load can and potentially will alter the sound balance of what you hear. To reproduce the sounds captured by the recording microphones, as Harbeth speakers are designed to do, you would naturally select system components (sources, electronics, cables and so on) that do not color the sound before it reaches the speakers.

Identifying components for their system neutrality should, logically, start with the interpretation and analysis of their technical, objective performance, as any and every deviation from a measurably flat frequency response at any point along the serial chain from microphone to ear is very likely to cause the total system to have an audible sonic personality. That includes the contribution of the listening room itself.

HUG specialises in making complex technical matters simple to understand, aiding the identification of audio components likely to maintain a faithful relationship between the recorded sound and the sound you hear. With our heritage of natural sound, HUG cannot be really be expected to guide in the selection, approval, endorsement or even discussion of equipment that is intend to introduce a significantly personalised sound to the audio signal chain. 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 electronics offered there. There is no on-line substitute for that time investment in a dealer's showroom.

If you desire to intentionally tune your system sound to your personal taste, please consider carefully how much you should rely upon 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, listening loudness and listening room treatment, not necessarily leading to appropriate equipment selection and listening satisfaction for you.

Alternatively, if faithfully reproducing the sound intended by the composer, score, conductor and musicians over your speakers is your audio dream, then understanding something of the issues likely to fulfill that objective is what this forum has been helping with since 2006. Welcome!"


Jan. 2018
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M30 & SHL5 output

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  • M30 & SHL5 output

    What is the maximum acoustic output(dB) with 2 speakers in-room, of the M30 & SHL5

  • #2
    Re: M30 & SHL5 output

    The honest answer is 'something over 100dB at 1m' but as I've never measured the maximum sound pressure level (and respect my ears too much) I can't be precise.

    Not only that, tere are many factors which must be taken into account to give a meaningful number such as ....

    a) how far away is the microphone?
    b) are both speakers playing exactly the same (mono) signal?
    c) is the signal bandwidth-limited so that, for example, all deep bass and extreme HF are eliminated and do not reach the speakers?
    d) are we measuring long-term maxima or just a burst, and in both cases over precisely what time period?
    e) is permanent but minor damage permitted to the speakers?

    Harbeth - and indeed all predecessor BBC-monitor speakers are designed to be listened to at a moderate level. You can get an idea of what I think is moderate from the Video Vault of a listening test underway.
    Alan A. Shaw
    Designer, owner
    Harbeth Audio UK

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    • #3
      Re: M30 & SHL5 output

      Do they both have the same mid/bass driver & crossover for that driver?

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      • #4
        Re: M30 & SHL5 output

        They have the same driver. They can't have the same crossover because a) the cabinets are of different sizes b) they have different tweeters c) .....
        Alan A. Shaw
        Designer, owner
        Harbeth Audio UK

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