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    Moondrop May USB-C Headphones Review

    As an Asian man who have spent decades in both eastern and western cultures, I am not at all offended by the discussion and such assumptions. In fact, I think it is important that @Somafunk and many other members in the thread are bringing the issue into view, because, unfortunately, many...
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    Moondrop May USB-C Headphones Review

    Very well researched. I appreciate your post!
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    Moondrop May USB-C Headphones Review

    Hello! Realistically, I don't think I can hear it at all.
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    Moondrop May USB-C Headphones Review

    Sure! Which one are you having troubles with the fit?
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    TANCHJIM KARA IEM Review

    Thanks! By reference point for FR, do you mean overlay the frequency response of the product under test with another frequency response from a well known product?
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    TANCHJIM KARA IEM Review

    Yeah, no wonder they need to discount it at extraordinary rates -- the N5505 is not that good. That said, I think the biggest factor for distortion and compression is driver type. Dynamic drivers far out perform BA drivers in this regard, and I think it might be why they have a reputation of...
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    TANCHJIM KARA IEM Review

    Thank you for the correction!
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    TANCHJIM KARA IEM Review

    Thanks! I think it's a reasonable thing to check to find out limits in the design. I think it's best when viewed together with distortion measurements.
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    TANCHJIM KARA IEM Review

    Hello, this is a review of the TANCHJIM KARA IEM. This is my personal pair and costs US $179, but it is on sale on Amazon now for $143. This review will cover acoustic measurements of the TANCHJIM Kara IEM. Product Info, Physical Appearance and Size Kara is a hybrid IEM with 1 dynamic driver...
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    KEF R11 Meta Tower Speaker Review

    Hello, I totally agree. I have been testing dynamic compression on headphones and it is also a problem on some of those.
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    KEF R11 Meta Tower Speaker Review

    I’m working on a headphone review that include compression measurements of a few headphones. I measured with Ap and normalized with rew. I don’t think there is a easy way to do it in the ap software.
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    New Kiwi Ears/Crinacle iem

    I can't find any measurements on distortion. Have you found any?
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    New Kiwi Ears/Crinacle iem

    BA IEM's are already struggling with THD problems. I can't imagine why they would put out an IEM with only 1 BA driver and advertise it that way. Really curious about the distortion measurement on this one.
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    DIY Omni Dodecahedron Speaker

    Hello! Thank you so much for your offer to help! I just finished building this thing so it will be really interesting to see if your simulation can match measurements. I will send you the files in your DM.
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    Parts Express Customer Service Tells me to "Burn-in" Out-of-spec Drivers

    This is really good experiment. Thank you for sharing. I also found this Klippel paper that explains some of the speaker aging behavior. https://www.klippel.de/fileadmin/klippel/Bilder/Know-How/Literature/Papers/Aging%20of%20loudspeaker%20suspension_Klippel.pdf
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    DIY Omni Dodecahedron Speaker

    I am also worried about the comb filtering problem from multiple drivers playing high frequencies together. I am working on an omnidirectional speaker project myself, with a small 2-1/2" woofer and two passive radiators at the top and some microspeaker tweeters at the base. Seeing your results...
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    Parts Express Customer Service Tells me to "Burn-in" Out-of-spec Drivers

    I used pink noise low passed at 150Hz to generate plenty of excursion without overheating the voice coil. The signal level was not measured by adjusted by eye and by ear. I turned it to a point where the cone was moving about 1 to 2mm each way.
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    DIY Omni Dodecahedron Speaker

    Love this project. Keep us posted on updates!
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    Parts Express Customer Service Tells me to "Burn-in" Out-of-spec Drivers

    To be fair, Parts Express customer service did offer me a return even after hundreds of hours of burn-in tests, so getting my money back was not a problem. I only hope they can bring out more products that can stand up to inspection in the future. They did not offer an explanation on why these...
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    Parts Express Customer Service Tells me to "Burn-in" Out-of-spec Drivers

    Recently I bought some Dayton Audio ND64 and ND65 speakers for a project, and by the time I got them, they measured out of spec. Many of the T/S parameters were off. I contacted Parts Express customer support and they said I should measure them only after 48 hours of "burn-in". I gave them the...
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