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  1. amirm

    Ascend Sierra-1 V2 Speaker Review

    Reserved for @AdamG to kindly post the specs. :) SIERRA-1 V2 SPECIFICATIONS Typical In-Room Frequency Response 39Hz - 23kHz Typical In-Room Sensitivity 87dB @ 2.83v / 1 meter Nominal Impedance 8 ohms Max Continuous Power* 180 watts Max Short Term Peak Power* 250 watts Cabinet...
  2. amirm

    Ascend Sierra-1 V2 Speaker Review

    This is a review, listening tests, EQ and detailed measurements of the Ascend Acoustics Sierra-1 V2 bookshelf speaker. It is on kind loan from a member and costs US $16,48 for a pair. The finish is nice enough. The cabinet feels quite heavy for its size and especially in the front indicating...
  3. amirm

    John Lennon Music Education Tour Bus-Recording Studio, Operating Since 1998

    They had it at AES conference. It was nice all that they crammed into that truck.
  4. amirm

    KEF R11 Meta Tower Speaker Review

    Yes, I just checked and they are all secure.
  5. amirm

    KEF R11 Meta Tower Speaker Review

    There is a sharp edge some place that acts like a little speaker out of phase causing some cancellation on axis. I don't know if this is the speaker edge or driver.
  6. amirm

    KEF R11 Meta Tower Speaker Review

    Because the instrumentation there is very precise. Not so with acoustic measurements involving microphones, room noise, non-linearities, etc. When you have bass distortion in full percentage points, you could just be looking at distortion products and not anything remotely related to...
  7. amirm

    KEF R11 Meta Tower Speaker Review

    We do use different scales but such scales need to be chosen carefully. The CEA-2034 standard specifically mentions 50 dB vertical range and proper aspect ratio: "Data shall be reported in graphical form as illustrated in Figure 4. This chart follows the guidance of IEC 60263, which stipulates...
  8. amirm

    KEF R11 Meta Tower Speaker Review

    They come separate and you have a choice of using them or not. It won't make a difference in measurements anyway. As I explained, the measurements highly correlate with KEF's anechoic room measurements. Let's agree they know how to test them! :)
  9. amirm

    Jack, why ?

    If we want complain about something, it would be the RCA cable and signaling. 1/4 Jack is worlds ahead in that regard.
  10. amirm

    RIP member Scott Wurcer

    Oh no! :( There is a definite disturbance in the force with his passing. May his memories be a blessing for his family and everyone who knew him. What a great contributor to technology.
  11. amirm

    KEF R11 Meta Tower Speaker Review

    On tweeter position it is slightly below my ear at my listening position. However, I have the R11 Meta on a foam pad, not its dedicated footers. I don't remember how tall they are. From my rather far listening position, I didn't get the sense of tweeter being too low whereas I think my Salon...
  12. amirm

    KEF R11 Meta Tower Speaker Review

    Someone asked for comparison against my Revel Salon 2. I actually thought of that when listening to R11 Meta. They are not in the same place so I can't tell you about a direct comparison. Commenting anyway :), I thought the apparent image size of the R11 Meta is smaller than Salon 2...
  13. amirm

    KEF R11 Meta Tower Speaker Review

    Unfortunately not. I had to get help to get them on measurement stand. I meant to make that measurement but just forgot. Integrating subs with speakers is always very difficult. Are you measuring your room to do that?
  14. amirm

    PS Audio sent Erin their speaker??!!

    Again, unless someone shows some temperature probe measurements, there is no reason to think these are thermal effects. A different driver may just have lower distortion -- something we already measure and show directly instead of implicitly through this graph.
  15. amirm

    PS Audio sent Erin their speaker??!!

    Soundstage (really NRC) does it correctly: Notice the proper 50 dB vertical axis to account for myriad of unknowns and accuracy issues. Erin zooms that out almost 10X to just 6 dB vertical scale!!! If you see issues in Soundstage tests, then yes, it is a problem. And it would show just as...
  16. amirm

    PS Audio sent Erin their speaker??!!

    We are not seeing anything remotely like that (4 dB loss across three octaves). I am sure there are some way under-designed drivers out there that have issues like this. The topic here are Erin publishing measurements after measurements on every speaker claiming to show reduction or in some...
  17. amirm

    Lenire Tinnitus Treatment

    It has never been horrible except for when I first realized I had it. My brain filters it almost all the time. But some days it picks up and is worse. But never a disability thankfully.
  18. amirm

    Lenire Tinnitus Treatment

    Maybe when I first recognized it but not really after that.
  19. amirm

    KEF R11 Meta Tower Speaker Review

    I will check but company confirmed it is there.
  20. amirm

    KEF R11 Meta Tower Speaker Review

    I am not using AP for these tests. It is all done by Klippel. I use the same 50 dB scale as in the frequency response graph so we don't lose sight of what we are looking at. Zooming in makes little sense as the measurements have noise in them and such zooming will exaggerate differences that...
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