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the real Duke Spinner

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Posts posted by the real Duke Spinner

    Cables, Coffee, Cycles, and Cocktails

    in Lounge

    Posted

    Waaaay O/Y hete

    But Let me ask

    An acquaintance has a missing husband'

    I provided the family with someone Slot Of at Track and stuff for the Holiday But There is not enough to put together a working Set Up.i wild he happy to purchase any Aurora AF/X items that You may have Regards

    • Sad 2

    Lascala cabinet resonance

    in 2-Channel Home Audio

    Posted

    On 1/2/2024 at 2:22 PM, Invidiosulus said:

    This is a basic simulation of the LS bass horn in Hornresp.

     

    The K33 is in light gray and I’ve plotted the exact same horn in black but substituted the driver specs for those of the Eminence Kappa 15C.

     

    as you can see, both drivers show a peak in the 150Hz region with the 15C showing less of a drop in output.

    IMG_2158.png.bf014a8ce2bf9044e703055d65ee6c73.png

    You will also note that the 15C gives up a little on the low end to the K33.

     

    Even if the sidewalls aren’t resonating(much) there is still going to be that peak in the response which will really honk if given the right(wrong) source material.


    This peak in the 150Hz region is well documented, and even showed up in the  response curves from the stereophile review of the AL-5.


    Before anybody has a chance to try to pretend that I’m making this up, and that the stereophile measurements aren’t valid(I’m looking at you @OO1 ), I would like to remind you that Roy himself posted the following EQ settings for use with the LS bass section when using an active DSP crossover.

     

    87hz, Q:3.5, +5dB
    148Hz, Q:8, -7dB
    380Hz, Q:5.5, +2dB

     

    I think it’s hard to realize what you are missing until you have a chance to hear the LS bass without that peak.

    150 hz is a problem Grew in all of Sound Recording and reproduction

    I have never been motivated to study why

    Thad why there is a 150hz Fader. 😀🙂😀

    • Like 1

    Maybe You Have A Juicy Question?

    in 2-Channel Home Audio

    Posted

    On 1/1/2024 at 3:01 PM, RealMarkDeneen said:

    Hey Babadono---

    I turned 75 last October.  Yup, still out in the desert where I imagine I will someday just walk out into the 120-degree heat and become part of the landscape of bleached bones in the Mojave Preserve.

     

    People Chow is still a dream - HOWEVER, I do eat incredibly simple foods in very modest amounts. My menu has about 12 - items on it, which is in some way consistent with the People Chow idea. But when I first worked on P.C. it was 1993 and I was mostly using "carbs" to make the mix. UGH! I am almost a zero-carb guy now. "All you need is meat!"

     

    I'm hibernating for the dang winter here. I'm freezing in this 50-degree weather. Can't wait for that 100-degree mark which usually comes in early May.

     

    Keeping busy with speaker projects and my very newest "entertainment" of restoring 70's era receivers. Little damn jewels they are!

    Happy New Year, Amigo!

    Mark

    People Chow ,??

    Soylent Green ??

    • Haha 1

    Cornwall IV - to go SET or Class A?

    in 2-Channel Home Audio

    Posted

    On 12/27/2023 at 12:36 PM, Marvel said:

    You beat me to it, Henry.

     

    I powered my JBL 4311s with 2A3 monoblocks, and still was ok with the power most of the time. IIRC, the JBLs are only 89db sensitivity. The Cornwalls should be pretty good with a 300B amp.

    4311.  🙂

    My ex wife stole those. 🙄

    Replaced years later with 4430.and aKH 😀😀😀

     

    JBL L36 deserve a mention as a nicely balanced speaker

    • Like 1
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