Re: X32 Discussion
Hi Robert,
After thinking about this further, a few thoughts:
1) You examining the console(s) to see if you can replicate the measurements is of course fine.
2) One purpose of my measurement activity was to find measurable results to confirm or disprove what I and many others here have repeatedly heard with our ears. It is confusing why you or anyone else who can hear as high as 6kHz in a quiet space using speakers capable of reproducing that not-very-high frequency are not hearing it now, regardless of the presence or absence of test equipment.
3) The other purpose was to see if it was only one or two consoles, or consoles of a certain age or serial number range, that were making the objectionable noise. I believe I have shown that a relatively random sample (consoles that were chosen by a warehouse crew and sent to me at two different times with a mild range of serial numbers) shows the phenomenon to be widespread if not universal, and that there is not much variation between consoles regarding that problem. This is what my ears tell me, too. With the exception of .16, they all sound and measure alike*. And maybe that's a reason why .16 is not a good one for you, although sending it to you would get it away from me. You can have another one if you deliver a fully working replacement at pickup, or if you can wait until after the first week of March.
4) If you don't listen in a quiet space, or if you cannot hear high frequencies (there is a range of individual capability due to a variety of factors), or if the speaker/amp combination does not evenly reproduce the frequency range then it won't be heard, but doesn't mean it isn't there.
5) It's also important that the Monitor pot is wide open, which is unity gain and not into any kind of increased amplification. The output is perceptually silent at lower settings, and I didn't bother to measure it that way.
So, again, it is mysterious why test equipment is required to note that there is a problem. I don't doubt it may be necessary to solve the problem.
I will half-seriously suggest that a more productive investment might be to have me come to Las Vegas and tell you if I hear the problem on the consoles and listening situation you have available, and, if not, help you figure out why it's not obvious there when it's obvious here?
Thanks again for the nice comments.
Dan
*The 6kHz peak of .16 is at the same amplitude as all the other consoles, but the increased noise floor makes it not stick up above the curve as much as on the other consoles. And even though 6kHz seems to be the most obnoxious peak on all consoles, there are plenty of other frequency peaks, particularly around 500Hz and 12kHz, that are equally troublesome intellectually although not perceptually.
PS I didn't mention that the 6kHz peak lowers to 5 something kHz when the console is set to 44.1.
