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A collection of speaker target responses in .csv/.txt format

Keith_W

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This is rather an extreme case...

If you don't mind, could you post the mdat file of the corrected measurements shown?

I am certainly happy to send you the mdat file if you inbox me with your email address. I just tried to upload it but ASR would not let me ("wrong extension"). However, the corrections were done with Acourate. If you have Acourate, I am happy to send you the workspace as a ZIP file as well.
 

ernestcarl

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I am certainly happy to send you the mdat file if you inbox me with your email address. I just tried to upload it but ASR would not let me ("wrong extension"). However, the corrections were done with Acourate. If you have Acourate, I am happy to send you the workspace as a ZIP file as well.

Took a look at your measurements...


Now, this is just a personal "guess", but I suspect the deliberate hump you've EQ'd preferentially by ear can be partially/largely attributed to the time domain unevenness or smearing concentrated between 100-500 Hz of your in-room measurements.


1691039238551.png



Late Frequency Response (20 ms trace)
1691039243025.png 1691039247891.png


Wavelet Spectrogram
1691039335472.png 1691039340498.png


Again, the unevenness in your room acoustics may really be (at the very least partly) to blame why you find any of the "standard" target curves just plain wrong/bad sounding.


*BTW, I would suggest that you also try to audition some well known "reference" pop songs with clear vocals apart from the usual classical music(?) genres you seem to like listen to... and assess how natural voices sound.
 

Keith_W

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Thanks for your offer to help @ernestcarl but with the help of a friend, we managed to figure out what the issue was. These were the questions we asked, how we answered those questions, and the outcome.

1. Is there a problem with my system, or do I really prefer this tonality? I asked my friend to replicate my target curve on his system, and I went over to listen. As expected, it sounded like a tin can. So the problem was with my system.

2. Is there a problem with my measurements? I own two microphones and two interfaces, so we repeated sweeps. Exactly the same, so we can rule out mics and interface as the issue.

3. Given that I measure with one DAC (RME Fireface UC) and listen with another DAC (Merging NADAC), could there be a difference between the two DAC's? We listened to music on the RME and then the Merging and there was an obvious difference in tonality. The RME sounded as we would expect from that target curve (like a tin can) and the Merging had my preferred sound (see previous post).

We first checked RME Totalmix to make sure the mixer settings were correct. I performed a reset on the RME and it still performed the same. So it's not the RME. I reset the Merging to make sure there were no individual channel trim issues, and it still performed the same. So it's not the Merging.

I then moved the XLR's from channels 3 and 4 (which goes into the woofers) of the Merging into channels 5 and 6, and then 7 and 8 to check whether the Merging was outputting the same signal voltage into all the outputs. If channels 5, 6, 7, 8 showed less output than channels 1, 2, 3, 4 ... then the Merging has to go back to the dealer. The outcome of this experiment showed that all the channels put out the same voltage. Therefore the problem has to be downstream from the DAC.

By this point I was pretty flabbergasted. How can four different power amp monoblocks have the same lower output compared to channels 1-4? Surely it is impossible for four power amps to develop exactly the same fault and attenuate volume by the same amount!!! So we patiently went through and did a few sweeps.

image.png.0bcc81a52d7b144bd6e86af8b3b5d624.png


This is the output to the woofers from Merging and RME. Exactly the same. So let's move on.

image.png.c62a8b5200d72e0d8ef8e9a1f476f9fb.png


Now the horns. We have a problem - the Merging (in purple) is about 5-6dB lower than the RME (in blue). After a bit more digging, we found that the individual channel gain on the preamp was set to 0 for the Merging input, and +6 for the RME input. This is a secondhand preamp, and a recent acquisition, so the previous owner had set these levels and I never checked it.

image.png.88bbac7655e6a8f2d84c03400fc55241.png


After setting the gains on the preamp so that the RME and Merging were the same, this was the outcome. Perfect channel match.

image.png.2341fb3034cc1de5eff95a4201945ea9.png


Now for the tweeter. There is a whopping discrepancy between the Merging (green) and the RME (blue), with the RME being much louder. This time, there is no preamp between the DAC output and the tweeter's power amp. However, the tweeter's power amp (a Valvet A1R) is the only power amp in the system that is driven via single ended input, rather than XLR. My friend pointed out that single ended output voltages are usually lower than balanced, and it is possible that the RME and the Merging have a different delta between RCA and XLR. I have no other explanation better than his, so I think he is probably correct. The way to find out would be to use a voltmeter, but I do not own one.

image.png.b7e6c9e5c6d03cc3f5922f84d1b73d22.png


So the solution would be to knock down the output of the RME by 10dB to match the Merging. We now have volume matching for the tweeter.

Never in my wildest dreams could I have imagined that different output settings to four channels was the cause for this discrepancy. In the past I had noticed a difference in sound between the RME and the Merging, but I had put that down to "the Merging being a better DAC". In hindsight, this was foolishness and confirmation bias, and I should have been more careful with my thinking.

Of course, what this means now is that ALL my measurements I have done to date have to be thrown out the window. Well, not all of them - the measurements for individual drivers, time alignment, VBA and so on are still valid. However, any measurement of target curves, adjusting the levels of one driver against another, etc. have to be discarded.

The other thing I realized is that my hearing is quite good after all! I managed to adjust the target curve back to neutrality by listening and subjective impressions alone, and I was not influenced by the strange looking measurements in front of me. I suppose I should pat myself on the back for that one.

So I am back on track. I have a lot of work to do, remeasuring, redoing target curves, and re-listening to all the other target curves that I have unfairly maligned.
 

ernestcarl

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Thanks for your offer to help @ernestcarl but with the help of a friend, we managed to figure out what the issue was. These were the questions we asked, how we answered those questions, and the outcome.

1. Is there a problem with my system, or do I really prefer this tonality? I asked my friend to replicate my target curve on his system, and I went over to listen. As expected, it sounded like a tin can. So the problem was with my system.

2. Is there a problem with my measurements? I own two microphones and two interfaces, so we repeated sweeps. Exactly the same, so we can rule out mics and interface as the issue.

3. Given that I measure with one DAC (RME Fireface UC) and listen with another DAC (Merging NADAC), could there be a difference between the two DAC's? We listened to music on the RME and then the Merging and there was an obvious difference in tonality. The RME sounded as we would expect from that target curve (like a tin can) and the Merging had my preferred sound (see previous post).

We first checked RME Totalmix to make sure the mixer settings were correct. I performed a reset on the RME and it still performed the same. So it's not the RME. I reset the Merging to make sure there were no individual channel trim issues, and it still performed the same. So it's not the Merging.

I then moved the XLR's from channels 3 and 4 (which goes into the woofers) of the Merging into channels 5 and 6, and then 7 and 8 to check whether the Merging was outputting the same signal voltage into all the outputs. If channels 5, 6, 7, 8 showed less output than channels 1, 2, 3, 4 ... then the Merging has to go back to the dealer. The outcome of this experiment showed that all the channels put out the same voltage. Therefore the problem has to be downstream from the DAC.

By this point I was pretty flabbergasted. How can four different power amp monoblocks have the same lower output compared to channels 1-4? Surely it is impossible for four power amps to develop exactly the same fault and attenuate volume by the same amount!!! So we patiently went through and did a few sweeps.

image.png.0bcc81a52d7b144bd6e86af8b3b5d624.png


This is the output to the woofers from Merging and RME. Exactly the same. So let's move on.

image.png.c62a8b5200d72e0d8ef8e9a1f476f9fb.png


Now the horns. We have a problem - the Merging (in purple) is about 5-6dB lower than the RME (in blue). After a bit more digging, we found that the individual channel gain on the preamp was set to 0 for the Merging input, and +6 for the RME input. This is a secondhand preamp, and a recent acquisition, so the previous owner had set these levels and I never checked it.

image.png.88bbac7655e6a8f2d84c03400fc55241.png


After setting the gains on the preamp so that the RME and Merging were the same, this was the outcome. Perfect channel match.

image.png.2341fb3034cc1de5eff95a4201945ea9.png


Now for the tweeter. There is a whopping discrepancy between the Merging (green) and the RME (blue), with the RME being much louder. This time, there is no preamp between the DAC output and the tweeter's power amp. However, the tweeter's power amp (a Valvet A1R) is the only power amp in the system that is driven via single ended input, rather than XLR. My friend pointed out that single ended output voltages are usually lower than balanced, and it is possible that the RME and the Merging have a different delta between RCA and XLR. I have no other explanation better than his, so I think he is probably correct. The way to find out would be to use a voltmeter, but I do not own one.

image.png.b7e6c9e5c6d03cc3f5922f84d1b73d22.png


So the solution would be to knock down the output of the RME by 10dB to match the Merging. We now have volume matching for the tweeter.

Never in my wildest dreams could I have imagined that different output settings to four channels was the cause for this discrepancy. In the past I had noticed a difference in sound between the RME and the Merging, but I had put that down to "the Merging being a better DAC". In hindsight, this was foolishness and confirmation bias, and I should have been more careful with my thinking.

Of course, what this means now is that ALL my measurements I have done to date have to be thrown out the window. Well, not all of them - the measurements for individual drivers, time alignment, VBA and so on are still valid. However, any measurement of target curves, adjusting the levels of one driver against another, etc. have to be discarded.

The other thing I realized is that my hearing is quite good after all! I managed to adjust the target curve back to neutrality by listening and subjective impressions alone, and I was not influenced by the strange looking measurements in front of me. I suppose I should pat myself on the back for that one.

So I am back on track. I have a lot of work to do, remeasuring, redoing target curves, and re-listening to all the other target curves that I have unfairly maligned.

Well, I'm still very curious what the final summed response (target) curves are going to be after you sort all this out...

Good luck!
 

ahofer

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The problem here is listening volume. The one you find ‘bass light’ at low volume will sound better loud. That’s why a more modest target curve combined with RME or Buchhardt-style loudness adjustment might work best. Or you need 2-3 curves in Roon.

It’s too bad you can’t layer EQ adjustments in Roon. I have a basic convolution for my speakers (in the setup that doesn’t have RME), but you can’t put an additional boost on top of it for low volume, for instance.
 

ernestcarl

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The problem here is listening volume. The one you find ‘bass light’ at low volume will sound better loud. That’s why a more modest target curve combined with RME or Buchhardt-style loudness adjustment might work best. Or you need 2-3 curves in Roon.

It’s too bad you can’t layer EQ adjustments in Roon. I have a basic convolution for my speakers (in the setup that doesn’t have RME), but you can’t put an additional boost on top of it for low volume, for instance.

One of the best features in JRiver is the loudness compensation DSP — or ability to change EQ presets easily in general. With the loudness compensation turned on, I really don’t find much need to make bass tone control adjustments for the most part with listening volume level changes.
 

Soniclife

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It’s too bad you can’t layer EQ adjustments in Roon. I have a basic convolution for my speakers (in the setup that doesn’t have RME), but you can’t put an additional boost on top of it for low volume, for instance.
You can do this, just add a parametric filter after the convolution ones. You can save different profiles with pre-applied boost for flicking between at play time, just name them well.
 

ahofer

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You can do this, just add a parametric filter after the convolution ones. You can save different profiles with pre-applied boost for flicking between at play time, just name them well.
Hmm. I guess I don’t have to re-load the convolution files.
 

Soniclife

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Hmm. I guess I don’t have to re-load the convolution files.
You can save the existing preset under a new name and then add whatever you like to that. Swapping between presets is easier than tweaking one.
 

Jorgitok

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This curve makes my NAD M10 sound quite well
 

Attachments

  • DL default +6dB.targetcurve.txt
    234 bytes · Views: 61

jtk9412

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I would like to know if the Harman target on the first post is the latest one.
 

YeongGyun An

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Could someone please try to EQ with this curve file and evaluate it?

For the record, I'm Korean and speak bad English.
I use a translator to post. Please understand if I write awkwardly.
Out of curiosity, I've downloaded the "Toole's curve for trained listeners" file posted by staticV3 and
"Harman average target" file posted by thewas and averaged them with REW to create the
target Curve, and to my ears, it sounds moderately stimulating and nice. I'm curious how it sounds to others.
Test File.jpg
 

Attachments

  • aver target.txt
    1.5 MB · Views: 15

ZolaIII

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Could someone please try to EQ with this curve file and evaluate it?

For the record, I'm Korean and speak bad English.
I use a translator to post. Please understand if I write awkwardly.
Out of curiosity, I've downloaded the "Toole's curve for trained listeners" file posted by staticV3 and
"Harman average target" file posted by thewas and averaged them with REW to create the
target Curve, and to my ears, it sounds moderately stimulating and nice. I'm curious how it sounds to others.View attachment 363797
Get back to post 127 and read.
Would be good think for Sean to do that also and no 105 Hz is not transition frequency it morphs (extends more). There is a progress regarding low bass additional boost which shouldn't be neglected either after ISO 226 2003 & 2012.
ISO 226 2003.jpeg

Preference whose done based on not good done tone controls to begin with.
JM-1 averaged pina whose a step into right direction tho more work need to be done regarding it and uper averaged auricle get established (more towards uper end as for some that will give more stage, for some won't but it won't be siblant to anyone) and used for headphones.
Better HATS and model of ear and ear chenel certainly help regarding that.
 
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