Recent content by DS23MAN

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    Temperature Control In Speaker Measurements

    The spider is most the contributing part of the compliance ( 70% I read somewhere).
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    Neumann KH 80 DSP Speaker Measurements: Take Two

    A calibration file for free field isn't correct in nearfield measurements.
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    Neumann KH 80 DSP Speaker Measurements: Take Two

    Earlier on I mentioned the problem with using a free field calibrated measurement mic within a near field setup. And this is the red herring. Because of the close range at exact tweeter axis on axis you will get a rise in the high frequencies ( source:Beyer Dynamic):
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    Neumann KH 80 DSP Speaker Measurements: Take Two

    If the reference axis should be chosen before you start this Klippel spinorama, the system sucks....
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    Neumann KH 80 DSP Speaker Measurements: Take Two

    Just play around in Edge. Put a 25cm woofer in a 30x30 cm baffle. Change the mic distance between 1m and 10m. No change in the respons in the normal used fr range for this size driver.
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    Neumann KH 80 DSP Speaker Measurements: Take Two

    Far field starts at 3 times of the drivers diameter. It hasn't nothing to do with box size.
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    Neumann KH 80 DSP Speaker Measurements: Take Two

    All Class 1 free field measurement mic's are calibrated as in a free field. When you use them close to a reflective object ( aka a loudpeaker) the calibration will be off....
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    PlayClassics album premiere for ASR members

    Nice! Please send me the code.
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    Do servo subwoofers actually lower distortion?

    Actually I am working with Rob: http://zelfbouwaudio.nl/forum/viewtopic.php?f=4&t=27161&p=1905153&hilit=piggyback#p1905153 http://zelfbouwaudio.nl/forum/viewtopic.php?f=3&t=27407&hilit=567
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    Active speaker OEMs

    The mid dome in the Neumann KH 420 is made by Peerless India.
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    Neumann KH 80 DSP Monitor Review

    Lots of discussions about the Klippel system, but I can't find any reference on the measurement mic Armim is using.
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    Spinorama! (also known as CTA/CEA 2034 but that sounds dull, apparently)

    Some food for thought: The spinorama is based on generated reflections in a room and are based on anechoic measurements. But a room is not all about reflections. Below the Schroeder frequency the standing waves take over: https://en.wikipedia.org/wiki/Room_acoustics How predictive are the...
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    On Class D Amplifiers Measurements

    9. They need a mains filter to operate perfectly... :facepalm:
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