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Graham Audio LS5/9

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

  1. tuga

    tuga European

    No one has yet mentioned Stirling Broadcast.
    Their speakers are designed by Derek Hughes, just like those made by Graham Audio. Finish is perhaps not as luxurious as that of GA speakers.

    The LS3/6s used to cost as much as the GA LS5/9s but their prices have recently gone up, and they also manufacture the smaller SB-88 which is closer in size to the LS5/9:

    I'm very happy with my pair of 3/6s, preferred these over the SHL5+s.
     
  2. Purité Audio

    Purité Audio Trade: Purite Audio

    We tried them when they were released, I didn’t measure them , they were ok.
    [​IMG]

    Keith
     
  3. Ayya Khema

    Ayya Khema pfm Member

    ive seen those measurements, doesnt corellate with my measurements.
    you can see from the first graph a small peak at 6khz, but this scale has alot of smoothing. but what I dont understand is their small dip, mine was much larger, covered from 1.7khz up to 3khz.
    anyhow.
    curious about ls3/6. what was the condition in which youve compared them to the shl5+?
     
  4. Ayya Khema

    Ayya Khema pfm Member

    ok
    my room is entirely treated (1st reflections point with panels). 1m away from the speakers in my room my measurements could clearly show the different FR of the shl5+ and ls59
     
  5. Strictly Stereo

    Strictly Stereo Trade: Strictly Stereo

    The tweeter on the LS5/9 is supposed to be at ear height. Where do you place the mic?
     
    tuga likes this.
  6. tuga

    tuga European

    The Hi-Fi World plot uses 1/3 octave smoothing which correlates reasonably well with listening (some sources mention 1/6 octave).
    REW has an option called Psychoacoustic smoothing, which uses 1/3 octave below 100Hz, 1/6 octave above 1 kHz and varies from 1/3 octave to 1/6 octave between 100 Hz and 1 kHz. It also applies more weighting to peaks by using a cubic mean (cube root of the average of the cubed values) to produce a plot that more closely corresponds to the perceived frequency response.

    Did you perform your measurements with the tweeter pointing at the listening spot/mic? This can make all the difference (it does with the LS3/6s).
     
  7. vln

    vln Shuns mooks. And MQA.

    Many thanks for your replies so far!

    @Strictly Stereo - looking forward to those measurements, thank you!

    What is the source of those measurements? "flat on-axis up to 19kHz" refers to +/- 3dB? Those measurements I have seen so far (e.g. in German Stereoplay magazine 2015) shows them dropping off quite dramatically after 10kHz, ending up 10dB lower at 20kHz (on axis).

    I understand room acoustics don't come into play much in this frequency range, so they can't be responsible for it?
     
  8. Strictly Stereo

    Strictly Stereo Trade: Strictly Stereo

    It'll be Friday before I get the opportunity to measure them.
     
  9. tuga

    tuga European

    Is this the measurement you are talking about?


    [​IMG]


    It's by Audio Magazine Poland:
    https://audio.com.pl/testy/stereo/zespoly-glosnikowe/2375-graham-audio-ls59

    I don't know why the response falls so abruptly above 12kHz since it's spec'ed 50Hz to 16kHz, ±3dB.
    The other two measurements don't show this behaviour, nor does the Audax specs sheet I linked before...
     
  10. Ayya Khema

    Ayya Khema pfm Member

    ive measured both the mic at tweeter level and woofer level. the bbc dip and 6khz peak of the graham's was definitely always present.

    and did the same with shl5+ many times, shl5+ always measured ruler flat

    graham ls59 do not measure totally flat. not like its the end of the worls though, just tought id mention it. My seas a26 is also definitely not 100% flat but I still love em!
     
  11. tuga

    tuga European

    I only asked because the magazine measurements I posted don't show a dip in the presence region.
     
  12. Ayya Khema

    Ayya Khema pfm Member

    havent you just posted a measurements that show that 7 degree off axis has a pretty serious dip?

    again, im genuinely curious, how and when did you compare the stirlings vs shl5+. what did you prefer from the ls36, how long was the audition, ect...
     
  13. I had a brief listen to a pair at the Wigwam Show recently, what I heard sounded really good. I'll certainly seek out a longer listen when it's upgrade time. They look very ugly with the covers off though.

    Cheers BB
     
  14. sunbeamgls

    sunbeamgls pfm Member

    All this about FR measurement is not the key thing with these speakers. They're "polite" and that won't show in the FR plots - some would say laid back, I would say lacking drive and dynamics. Some will like this, others not.
     
  15. Strictly Stereo

    Strictly Stereo Trade: Strictly Stereo

    That's not how I'd describe the LS5/9, but I suppose it depends what they're being compared to.

    I think they're beautiful, especially with the covers off.
     
    Nic Robinson and gryphongryph like this.
  16. tuga

    tuga European

    I said that they were flat on axis but relaxed progressively off axis in the presence region as all BBC-style speakers do (and those from many manufacturers).

    BBC speakers are meant to be listened to on axis.
     
  17. fatmarley

    fatmarley Registered User

    I've not heard them but I agree. Measurements will only show if there's something seriously wrong.
     
  18. tuga

    tuga European

    What do you mean by polite, and compared to what?
     
  19. Cereal Killer

    Cereal Killer fourhundredandthirtytwo

    @vln Sam, you know this is an itch you’re gonna have to reach and scratch yourself.

    There’s a few on eBay UK if you fancy a punt
     
  20. RossB

    RossB Member

    No, this is nonsense.
     
    bhazen and tuga like this.

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