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Graham Audio LS5/9

Discussion in 'audio' started by vln, May 14, 2019.

  1. tuga

    tuga Legal Alien

    Whatever.


    [​IMG]
     
  2. al2002

    al2002 pfm Member

    Is there a point to this?

    To be clear, the sound power is the *total power* radiated over an angle of 4 pi steradians. This will be frequency dependent, indicative of the directivity of the radiator. It is far from: “Power response is 360º frequency response”.

    May I recommend you get and read Toole’s book on Sound Reproduction. Depending on technical level, you might find Beranak and Mellow’s book on Sound Fields and Transducers to be very useful too.
     
  3. Pkay

    Pkay pfm Member

    Having owned a pair of LS 5/9s for a few years now I thought I would chime in. These aren’t speakers for people into heavy rock but if you like jazz, vocal and some classical music they are well worth considering.

    Mine are paired with a Lavardin IT which is only just powerful enough. Ideally I would go for a slightly more powerful amp.

    Sitting in the sweet spot these are some of the most enjoyable speakers at the price point. Especially in the mid range. I preferred them marginally over the Harbeth 30.2, however they do have a lot of similarities.

    I have mine on open metal stands that were copied from the Graham site. I would love to hear the 5/8s one day.
     
    Panderos, RoA, barryb and 1 other person like this.
  4. tuga

    tuga Legal Alien

    Total power radiated by a lodspeaker is 360° frequency response.

    I have read Toole's book (and found it somewhat overrated), but not Beranak and Mellow’s, will look it up.
     
  5. al2002

    al2002 pfm Member

    Still incorrect. If you would only stop arguing unnecessarily you might actually learn something.

    Based on your responses I doubt you are in a position to comment on Toole. Good luck with Beranak and Mellow.
     
    tuga likes this.
  6. tuga

    tuga Legal Alien

    Define frequency response and sound power response.
     
  7. yunie_

    yunie_ pfm Member

    I believe tuga argued with me unnecessarily over at the other forum as well. I guess he's a bit of a devil's advocate meant to antagonise people. He isn't playing the devil's advocate role well, but he sure is good at antagonising
     
    tuga likes this.
  8. al2002

    al2002 pfm Member

    Why not learn for yourself? Best to read a book on the subject, not advertising copy.

    Also see my earlier post.
     
  9. tuga

    tuga Legal Alien

    I am asking for Your definition. How do You define frequency response and sound power response?
    I want to understand why you believe that my definitions are incorrect.
    To me they seem identical to Toole's:

    [​IMG]

    [​IMG]
     
  10. Panderos

    Panderos pfm Member

    .

    That sums up my experience. I note one member described these Harbeths and Grahams as completely different, but to me they are quite similar, with many of the same strengths, subtly varied as to the mix of ingredients. Perhaps the Harbeths are somewhat smoother, the Grahams a bit more raw or unfiltered, with a tad more bass. Both have superb vocals, and midrange generally.
     
    Martyn Miles and Pkay like this.
  11. Pkay

    Pkay pfm Member

    In my room I thought the Grahams were slightly more neutral and dynamic but not a lot in it.

    My Lavardin IT is a good match but having heard the LFD NCSE MK3 paired with the Graham LS 5/9s (in my room) it was able to extract a bit more bottom end out of the speakers.

    I also thought the Grahams were a bit easier to drive than the Harbeths.
     
  12. al2002

    al2002 pfm Member

    FR is the sound *intensity* level as a function of frequency at a given *point* in space.

    I’ve already defined power response in an earlier post.

    Edit: This discussion has strayed a long way from the original topic. Perhaps it’s time for a separate thread?
     
    Last edited: Apr 10, 2022
  13. Chefren

    Chefren pfm Member

    A sound source will radiate in three dimensions, not two, so degrees are not a useful unit here and 360° does not equate to "in all directions".
    See: https://www.techtarget.com/whatis/definition/steradian
     
    tuga likes this.
  14. tuga

    tuga Legal Alien

    Ok, I yield. 360º is not what I meant, but omni-directional. Wrong choice of word/number.
     
  15. Pkay

    Pkay pfm Member

    What is a good match for an integrated valve amp with the LS 5/9s?
     
  16. Pkay

    Pkay pfm Member

    Would you please provide a link to these charts. I'm having difficulty reading the numbers (probably need new glasses).
     
  17. Nickdubai

    Nickdubai pfm Member

    Have you considered the new LS8/1 an 8 inch driver and apparently better treble with the 2 HF drivers...
     
  18. tuga

    tuga Legal Alien

  19. No matter how good that LS8/1 sounds I couldn’t have it in the house. That is one ugly speaker, it looks like they’re ashamed of the woofer.

    Cheers BB
     
    Tarzan and Allaboutmusic like this.
  20. wow&flutter

    wow&flutter pfm Member

    When I saw a pic of the 8/1 I wondered if it was going to be a reworked Studio 1 but would I be correct in saying it’s more an updated BC1?
    Not wishing to divert the thread but I’ve always been curious about the 5/8. I saw a Rogers pair must have been in the early 80’s but never heard them, they certainly didn’t appear to be popular I guess due to the external crossover / power amps. Even in passive form as the Chartwell pm450 they are pretty rare!
    I wonder how popular a seller it is in its Graham Audio incarnation, I think it looks great but dimensionally I guess it looks it’s age (wide/shallow as opposed to the modern narrow/deep trend) not sure about the crossover wires on the baffle either!
    Anyone had any experience of them?
     

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