Recent content by ctrl

Yes thanks for the link, that is what I have missed in the first video (or not have recognized the hint to the second video). With this information one has a starting point to replicate the ABX-Test with a change to hear the difference too. I will explicitly refer to the second video in my two...

To realistically hear a difference, the two samples must differ by at least about 0.5dB over 1-2 octaves, i.e. at least from 10kHz to 20kHz 0.5dB difference. Recognizing this correctly 18 times in an ABX test with 20 attempts would be damn difficult to impossible. But we are miles away from...

Here is the explanation of how the music samples from the YouTube video can be distinguished with 10/10 in an ABX test - of course I cheated: On the left you can see the test setup. Simply hold a mic to the headphones. And on the right you can see the measurable difference in the live...

Sorry, but that's not correct. The two music samples in the YouTube video only show differences in amplitude in the 20-22kHz range and virtually no phase differences.

Even in the (not uncontroversial) sources on "listening above 20kHz" linked under the YouTube video (for examples this source), the tests were carried out with signals up to 100dB and the threshold for 24kHz listening was 88dB for 4 listener out of 15 - if I understood it correctly. The first...

If the reconstruction filters used have a noticeable effect, can you describe how to proceed in this case (download of test files is here) to identify a difference. I did an ABX test in foobar several times and the only surprising thing was that I got exactly 50% correct three times, so for me...

One should be careful with generalizations. It is more of a myth that Klipsch speakers exhibit particularly low compression, aka great dynamic range. The "Klipsch Premium Heritage Speakers" in particular sometimes exhibit poor short term compression behavior, as Erin's Audiocorner measurements...

If the measurement conditions are not specified, this information should be ignored or used only as a very rough guide. There are various standards for measurements of max SPL, max power (long term, short),... What they all have in common is that they usually suit the manufacturer very well...

I do not have distortion measurements for all possible tweeters available. But for the SBAcoustics TW29TXN-B, I have magazine measurements that show that at 85dB, the tweeter exhibits less than 1% HD2 and around 0.2% HD3 at 1kHz. The mere 6dB higher SPL results from a specific configuration...

Would never say that a tweeter array is an ingenious concept for the midrange. But it should work down to 800Hz. In my opinion, it would make much more sense to use a good 2'' full range driver, which allows a crossover frequency used in an 6 driver array of 300-400Hz (maybe 250Hz as 14 driver...

The tweeters used for the arrays of the "high-end" Tekton speaker have roughly the following key data: fs 600Hz, xmax 0.25mm, power handling 80W with BU2@2600Hz. At 85dB SPL such a tweeter (e.g. TW29BN-B, TW29DN-B) remains below 1% HD at 1kHz. Below fs, the frequency response drops off as a...

The measuring process by Stereophile is consistent, but about 6dB wrong below 300Hz. If done correctly, you can determine the low frequency range of a speaker to around +-1.5dB (my estimate, often deviation is less) via near-field measurement and subsequent merging of near-field measurement...

All Stereophile measurements of the overall frequency response are incorrect below 200-300Hz. When combining gated and nearfield measurements, the half-space (2pi) to full-space (4pi) transition of the nearfield measurement is not taken into account. You are probably the thousandth person to...

Tekton uses SBAcoustic dome tweeter which provides several different tweeter with 10cm² Sd - see the link in the previous post or here and here. In the Tekton speaker models with "circular arrays" are 6-14 tweeter used. So dome area isn't a real problem as long as the crossover frequency is...

... the statement is IMHO not quite right. Sd for a 1'' tweeter is usually between 6-10cm². With six units, you would therefore have a summed dome area of approximately 36-60cm² - for example, 1'' tweeters from SBAcoustic and Seas. The tweeters in the "circular midrange array" are, at least as...