AVS Forum banner

3141 - 3160 of 3182 Posts

·
** Man of Leisure **
Joined
·
24,059 Posts
Aha , look at that ... Much the same that I have .
So then it’s maybe normal afterall ....
Normal, maybe. But the question is whether it is excessive. I don't perceive any audible differences or issues with the bass compared with previous non-DLBC calibrations.
 

·
Registered
Joined
·
99 Posts
Normal, maybe. But the question is whether it is excessive. I don't perceive any audible differences or issues with the bass compared with previous non-DLBC calibrations.
So you are saying that the bass with BC is sounding just the same as without when playing music at high levels..?
 

·
Registered
Joined
·
155 Posts
No. Only "Off" and "Upmix only" recalculate automatically. For "Full Bass Optimisation" you have to click the "Calculate" button at the bottom of the right-hand side.
Ok. I always click calculate, thought it should be did that way.
 

·
** Man of Leisure **
Joined
·
24,059 Posts
So you are saying that the bass with BC is sounding just the same as without when playing music at high levels..?
As I said, I don't seem to hear any difference. I have not conducted extensive A/B comparisons.
 

·
Premium Member
Joined
·
738 Posts
According to google the audible threshold for group delay is 30ms but even lower is desirable. I'm seeing a similar trend in my own measurements. I wonder if this is a tradeoff one has to make if you don't have a treated room but want an even frequency response...Cause my room is not treated at least and DLBC is making drastic changes to the sound (to the better).
 

·
Registered
Joined
·
18 Posts
I have a new NAD T778 and I am starting to try to fully understand how to make Dirac work for me. Before taking any measurements using the app on my phone I purchased the full version of Dirac.

When watching movies I would like a little more bass. Another forum was suggested that I apply a filter to achieve that. When I looked into it I realized to apply the filter I needed to download the desktop version of Dirac (my phone is version 2.2). I was able to make the changes by importing my project into the desktop. A couple of questions. I plugged the mic into the T778 and took the measurements using the phone app. Does that matter? Do I need to take the measurements via the computer app version 3?

Also I noticed the curtain (range the Dirac corrects) is quite small for my main speakers (354Hz to 500Hz). What does this mean?

Also Dirac caps out my max volume at -2db. Not sure I care but why is it capping the volume?

Thanks in advance.
 

·
Premium Member
Joined
·
1,855 Posts
My custom target has a ~24 dB spread between bass and treble. Around +12 dB for bass and -12 dB treble rolloff. I used to use Harman but with more than +6 dB bass, the bass started to sound bloated to me. After extensive experiments with RoomFeel and another target curve that harrisu shared, I customized the curve and got a result that has ample bass but has never felt like too much, and sounds a lot more natural than Harman's bassier targets on my setup.

View attachment 3074367

Since Dirac won't boost more than 10 dB I had to get a little creative to get this result. I used the following DLBC target curve, and then increased sub gain after the calibration in order to get sufficient boost, verifying the result in REW against my actual desired response curve.

DLBC target curve:
15 5.20228
20.7069 5.20228
29.3124 4.82728
47.0001 2.4648
80.157 1.12803
100.1 1.0
130.174 0.70901
159.492 0.55286
200.111 0.41443
250.087 0.20893
320.564 0.02505
400.744 -0.1946
500.978 -0.36881
629.207 -0.59411
805.584 -0.79746
1002.19 -0.99389
1297.95 -1.2273
1600.76 -1.45981
2003.87 -1.62739
2500.77 -1.862
3200.31 -2.15972
4002.06 -2.41224
5000.59 -2.90211
6304.49 -3.52247
8009.01 -4.30868
10012.8 -5.3282
13020.6 -7.00538
16013.6 -8.60205
20007.5 -11.0086

Actual desired response curve:
15 93.87275
20.7069 93.87275
29.3124 92.87275
47.0001 89.8592
80.157 84.51211
100.1 81.80436
130.174 80.70901
159.492 80.55286
200.111 80.41443
250.087 80.20893
320.564 80.02505
400.744 79.8054
500.978 79.63119
629.207 79.40589
805.584 79.20254
1002.19 79.00611
1297.95 78.7727
1600.76 78.54019
2003.87 78.37261
2500.77 78.138
3200.31 77.84028
4002.06 77.58776
5000.59 77.09789
6304.49 76.47753
8009.01 75.69132
10012.8 74.6718
13020.6 72.99462
16013.6 71.39795
20007.5 68.9914
Oh mannn... that was a while ago. At that time I had 2 Mini Marty + UXL 18. Now I have 4 Devastators using 21" drivers. The difference is that now I am running 5dB of bass curve and they pound. Now with 5dB, you won't get insane TR or extreme room pressurization. For that, I use BOSS. It can give me all the TR/Wobble. I haven't been using BOSS since I have been busy with HTP-1 with new amps but so far loving it. I'll play some heavy bass clips to test out bass but for now, 5dB bass curve is doing very nice job in mid-bass. I'm also getting very good TR. I was watching AVA on Netflix and loved the dynamics it brought.

L/C/R
NAME
Unnamed
DEVICENAME
DDRC-88BM Zone 1
BREAKPOINTS
0 10.1107
29.5744 5
50 5
80 3
100 2.02293
127.343 1.2
159.149 1.2
200.111 1.2
250.087 1.20893
320.564 1.02505
400.744 0.805397
500.978 0.631194
629.207 0.405892
805.584 0.20254
1002.19 0.00611027
1297.95 -0.227296
1600.76 -0.459805
2003.87 -0.627391
2500.77 -0.862001
3200.31 -0.959721
4002.06 -1.01224
5000.59 -1.10211
6304.49 -1.22247
8009.01 -1.40868
10012.8 -1.72282
13020.6 -2.53538
17094 -4.11046
LOWLIMITHZ
26.2062
HIGHLIMITHZ
21524.1
Sub
# Generated by Dirac Live Calibration Tool V1.2.41 (Build 8863)
BREAKPOINTS
0 10.1107
20 5
29.5744 5
50 5
80 3
100 2.02293
127.343 1.2
159.149 1.2
200.111 1.2
250.087 1.20893
HPSLOPEON
0
LPSLOPEON
0
HPCUTOFF
15
LPCUTOFF
136
HPORDER
4
LPORDER
4
LOWLIMITHZ
16.9993
HIGHLIMITHZ
300
 

·
Registered
Joined
·
13,858 Posts
Discussion Starter #3,148 (Edited)
According to google the audible threshold for group delay is 30ms but even lower is desirable. I'm seeing a similar trend in my own measurements. I wonder if this is a tradeoff one has to make if you don't have a treated room but want an even frequency response...Cause my room is not treated at least and DLBC is making drastic changes to the sound (to the better).
GD audibility changes with frequency. There is no absolute value like "30ms". Often it is masked by room modes that can ring hundreds of milliseconds.
 
  • Like
Reactions: philipbtz

·
Registered
Joined
·
45 Posts
Any idea why when I check the speaker volume levels in DL on my Maestro X9 that instead of getting pink noise out of speakers I am getting a chirping sound that ends up being of a low volume output? When I check the speaker levels in the X9 alone without DL on pink noise comes out of each speaker. I cannot figure this out.
 

·
Registered
Sierra 2EX, 2x GSG 18" Marty Cubes, Marantz, QSC DCA, 65" Sony X900F (Horizon+S2 Rear coming)
Joined
·
5 Posts
I have a Arcam AVR 550 and am using Dirac Live v3.0.13

In the new version when setting up speaker levels, there is just a blue section in the middle where before there was a bar that went from green to red that helped you dial in the right levels. The manuals are not updated yet and I'm having trouble with my results and my thought is that I'm not matching them correctly.

After running Dirac, a comfortable volume is at 20 whereas before I would have it at 50. I'm hearing much more noise/distortion too.

Super weird sidenote: I was running Dirac and testing my center channel speaker level when the receiver restarted right when I played the white noise test tone for the center. It hasn't happened again but surely something went wrong.
 

·
** Man of Leisure **
Joined
·
24,059 Posts
I have a Arcam AVR 550 and am using Dirac Live v3.0.13

In the new version when setting up speaker levels, there is just a blue section in the middle where before there was a bar that went from green to red that helped you dial in the right levels. The manuals are not updated yet and I'm having trouble with my results and my thought is that I'm not matching them correctly.

After running Dirac, a comfortable volume is at 20 whereas before I would have it at 50. I'm hearing much more noise/distortion too.

Super weird sidenote: I was running Dirac and testing my center channel speaker level when the receiver restarted right when I played the white noise test tone for the center. It hasn't happened again but surely something went wrong.
Does the Arcam allow you to view the trims and delays set by Dirac? If yes, please post a screenshot.

If not, then when and if you re-run the Dirac calibration, take a screenshot of the level-setting screen before you proceed.
 

·
Registered
Joined
·
1 Posts
hello guys i did find this model
T 758 V3
is it good for dirac live? does it support dirac 2.0? i was deciding between this or a marantz 6011 / denon 3300w, i need the room correction and i did found that dirac is better than audyssey, thanks
 

·
Registered
Joined
·
12 Posts
Can anyone recommend a decent microphone stand with a long arm for taking measurements?

My current stand I end up having to actually put on the couch to get the microphone in the correct positions...

Sent from my Pixel 4 XL using Tapatalk
 

·
** Man of Leisure **
Joined
·
24,059 Posts
Search for "boom mic stand" and you will get hundreds of hits. Most are reasonably priced.
 

·
Registered
Joined
·
99 Posts
Ok , thankyou :)
And the gay who have written this , is even from Norway , and was and had an demo at his home 5-6 years ago :)
He is a very clever guy and he's producing no noncense product's . Have to read this a few times and try to understand all details.

I have to do some more measurments , and study this a little bit more a day I'm bored .
Because in my setup there is no doupt that upix make the bass much more tight and punchy than full BC for some reason.
 

·
Registered
Joined
·
12 Posts
Search for "boom mic stand" and you will get hundreds of hits. Most are reasonably priced.
Yes I know but there are some with much longer booms. Was wondering if there was a popular model.

I guess a better question is: is it even an issue if the stand is stood on the couch during measurement?

Sent from my Pixel 4 XL using Tapatalk
 

·
Registered
Joined
·
13,858 Posts
Discussion Starter #3,158
I guess a better question is: is it even an issue if the stand is stood on the couch during measurement?
Yes. It can completely ruin measurements especially at low frequencies. A tripod boom microphone stand should be considered mandatory for measurements.
 
  • Like
Reactions: Geronimo.USMC

·
** Man of Leisure **
Joined
·
24,059 Posts
Yes I know but there are some with much longer booms. Was wondering if there was a popular model.

I guess a better question is: is it even an issue if the stand is stood on the couch during measurement?

Sent from my Pixel 4 XL using Tapatalk
As Markus says, you definitely don't want to place the mic stand on the furniture. I don't see a significant difference among the mic stands. I think any boom mic stand that you choose will be fine.
 

·
** Man of Leisure **
Joined
·
24,059 Posts
Ok , thankyou :)
And the gay who have written this , is even from Norway , and was and had an demo at his home 5-6 years ago :)
He is a very clever guy and he's producing no noncense product's . Have to read this a few times and try to understand all details.

I have to do some more measurments , and study this a little bit more a day I'm bored .
Because in my setup there is no doupt that upix make the bass much more tight and punchy than full BC for some reason.
I am not completely sure I understood everything that was presented in that article either. Regardless, I am also unclear whether I am hearing any difference with my measured GD, nor do I understand what I would need to do to reduce the GD. So, for the time being, it is what it is.
 
3141 - 3160 of 3182 Posts
Top