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Re: Attenuate highest highs?

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On 19/02/2020 1:02 pm, ~misfit~ wrote:
> On 19/02/2020 11:14 am, Trevor Wilson wrote:
>> On 19/02/2020 6:41 am, Trevor Wilson wrote:
>>
>>>
>>> **Those "tinkling noises" you hear are somewhere around 3kHz. 
>>
>> **Should read: "....somewhere around 3 ~ 5kHz."
> 
> It seems to be higher.

**Until it has been measured, then we're both guessing. Few instruments 
go as high as 5kHz. There is almost nothing beyond 10kHz in any music.

> 
> FWIW I just did this on-line frequency hearing test:
> <http://onlinetonegenerator.com/hearingtest.html>
> and through my monitor-mounted Dell soundbar (with 25mm drivers) I could 
> hear to just over 12.5kHz but through the stereo in question could only 
> hear to about 11.5kHz. That's quite a bit lower than the last time I 
> used a similar tool a few years back. Maybe those years when I spent 
> hours several nights a week at a mixing desk at live (loud) gigs in my 
> 20s are coming back to bite me?
> 
> So now I'm a bit baffled. The issue I have is due to sounds at the 
> highest frequencies that I can hear and that seems to be ~11kHz with 
> this system in the current configuration. Maybe they have a peak about 
> there or are flatter than the other speakers I've tried...

**Until you perform some measurements, you're guessing. You could try to 
acquire a (preferably digital) parametric equaliser and perform some 
measurements.

I still betcha room treatments will solve your problems. IME (which is 
substantial), room treatments solve most mid-HF problems, PROVIDED there 
is nothing inherently wrong with the equipment, or the amp is not being 
clipped.

> 
>> Very few instruments possess fundamentals that reach 5kHz. A very tiny 
>> number posses harmonics of significant levels that exceed 10kHz.
>>
>> Turn the volume down and see if the sound is still annoying. I suspect 
>> you are clipping your amplifier. Clipping can generate large amounts 
>> of high frequency harmonic content. And, just to shut down any myths 
>> you may have heard: Valve amplifiers WILL clip and WILL generate 
>> excessive high frequency harmonics if over-driven.
> 
> It's not clipping. The Dynaco ST120 I have hooked up at the moment is a 
> solid-state amp and I no longer own any valve amps.

**You've checked with a 'scope to ensure no clipping then? Or are you 
guessing again? It might worth looking at the waveform on a 'scope to 
see if there are no parasitics present.


-- 
Trevor Wilson
www.rageaudio.com.au

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Attenuate highest highs? ~misfit~ <shaun.at.pukekohe@gmail.com> - 2020-02-13 01:19 +1300
  Re: Attenuate highest highs? Unsteadyken <unsteadyken@gmail.com> - 2020-02-13 16:59 +0000
    Re: Attenuate highest highs? ~misfit~ <shaun.at.pukekohe@gmail.com> - 2020-02-14 12:18 +1300
  Re: Attenuate highest highs? Peter Wieck <peterwieck33@gmail.com> - 2020-02-14 04:11 -0800
    Re: Attenuate highest highs? ~misfit~ <shaun.at.pukekohe@gmail.com> - 2020-02-18 18:05 +1300
      Re: Attenuate highest highs? Peter Wieck <peterwieck33@gmail.com> - 2020-02-18 06:45 -0800
        Re: Attenuate highest highs? ~misfit~ <shaun.at.pukekohe@gmail.com> - 2020-02-19 14:21 +1300
  Re: Attenuate highest highs? Trevor Wilson <trevor@rageaudio.com.au> - 2020-02-15 04:18 +1100
    Re: Attenuate highest highs? Peter Wieck <peterwieck33@gmail.com> - 2020-02-14 10:32 -0800
      Re: Attenuate highest highs? Trevor Wilson <trevor@rageaudio.com.au> - 2020-02-17 04:58 +1100
        Re: Attenuate highest highs? dpierce.cartchunk.org@gmail.com - 2020-02-17 14:27 -0800
          Re: Attenuate highest highs? Trevor Wilson <trevor@rageaudio.com.au> - 2020-02-19 06:35 +1100
      Re: Attenuate highest highs? ~misfit~ <shaun.at.pukekohe@gmail.com> - 2020-02-18 17:28 +1300
        Re: Attenuate highest highs? Trevor Wilson <trevor@rageaudio.com.au> - 2020-02-19 06:41 +1100
          Re: Attenuate highest highs? Trevor Wilson <trevor@rageaudio.com.au> - 2020-02-19 09:14 +1100
            Re: Attenuate highest highs? ~misfit~ <shaun.at.pukekohe@gmail.com> - 2020-02-19 15:02 +1300
              Re: Attenuate highest highs? Trevor Wilson <trevor@rageaudio.com.au> - 2020-02-20 08:44 +1100
                Re: Attenuate highest highs? ~misfit~ <shaun.at.pukekohe@gmail.com> - 2020-02-20 13:05 +1300
                Re: Attenuate highest highs? Trevor Wilson <trevor@rageaudio.com.au> - 2020-02-21 05:01 +1100
                Re: Attenuate highest highs? Peter Wieck <peterwieck33@gmail.com> - 2020-02-21 04:37 -0800
                Re: Attenuate highest highs? Trevor Wilson <trevor@rageaudio.com.au> - 2020-02-22 06:57 +1100
                Re: Attenuate highest highs? Peter Wieck <peterwieck33@gmail.com> - 2020-02-21 12:48 -0800
                Re: Attenuate highest highs? Trevor Wilson <trevor@rageaudio.com.au> - 2020-02-23 05:37 +1100
          Re: Attenuate highest highs? ~misfit~ <shaun.at.pukekohe@gmail.com> - 2020-02-19 14:28 +1300
            Re: Attenuate highest highs? Trevor Wilson <trevor@rageaudio.com.au> - 2020-02-20 08:57 +1100
              Re: Attenuate highest highs? ~misfit~ <shaun.at.pukekohe@gmail.com> - 2020-02-20 13:46 +1300
                Re: Attenuate highest highs? Peter Wieck <peterwieck33@gmail.com> - 2020-02-20 05:18 -0800
                Re: Attenuate highest highs? Trevor Wilson <trevor@rageaudio.com.au> - 2020-02-24 09:46 +1100
    Re: Attenuate highest highs? ~misfit~ <shaun.at.pukekohe@gmail.com> - 2020-02-18 16:18 +1300
  Re: Attenuate highest highs? dpierce.cartchunk.org@gmail.com - 2020-02-14 13:05 -0800
    Re: Attenuate highest highs? ~misfit~ <shaun.at.pukekohe@gmail.com> - 2020-02-18 17:48 +1300
  Re: Attenuate highest highs? "Mat Nieuwenhoven" <mnieuw@zap.a2000.nl> - 2020-02-17 08:50 +0100

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