NAD 758 v3 - Page 127 - AVS Forum | Home Theater Discussions And Reviews
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post #3781 of 10077 Old 08-10-2018, 02:56 PM
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Quote:
Originally Posted by DavCap78 View Post
Had the same problem few months ago.. Try to disable the automatic power off and HDMI cec.. it solves the problem for me
Thanks, exactly what I was hoping for. Will try that out later tonight. I'm pretty certain it's not a heat problem. It shuts down last night even with the fan running on top. The unit was barely warm. Interestingly, it doesn't have any problem with running the cable box as a source.
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post #3782 of 10077 Old 08-10-2018, 02:58 PM
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Originally Posted by blackspider View Post
Interesting, some hope if i do purchase & get the previous version of the sound module card.

I have emailed NAD support to see if there is a way to identify if the unit has the new sound module card installed without opening the box.

Will update once i get a reply back.


Thanks.
There are photos in this thread showing the difference between the two.

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post #3783 of 10077 Old 08-10-2018, 04:09 PM
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There are photos in this thread showing the difference between the two.
do you know the post #
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post #3784 of 10077 Old 08-10-2018, 04:25 PM
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I'm not sure whether there are some pictures on the box to identify the version without opening it, but once you have a view on the back side of the AVR it's pretty obvious.

https://www.avsforum.com/forum/90-re...l#post56246722


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post #3785 of 10077 Old 08-10-2018, 08:19 PM
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I got this receiver a week and a half ago and really like it so far. There are some minor annoyances but sound quality and Dirac are really good.

My main questions are around Dirac. I bought the calibrated microphone and upgraded to the full version of Dirac. I ran the 9 points with the guide in this thread.

My questions around the filters to use. I have Revel F208 fronts and a C205 center. I used the harman curve on all the speakers. The one guide I saw said to not use it on the sub but I did anyways. I am not sure which curve I should use on the sub. I also greyed out the frequency on the left side for the speakers up to where there are large dips. I did this on a per speaker basis. I then made sure the crossovers were above that threshold. I guess I just wanted to make sure I handled it right.

I then started doubting myself on speaker toe in and thought about rerunning all this again. I am curious how often you guys run the speaker calibration (changing toe in, location, etc) and how much manual tweaking you do.

PS I ordered my NAD t758v3 from Crutchfield and I got the new chip version if that helps ease anyone on ordering from them and getting the latest chipset.
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post #3786 of 10077 Old 08-10-2018, 11:58 PM
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Quote:
Originally Posted by dmbmay98 View Post
I got this receiver a week and a half ago and really like it so far. There are some minor annoyances but sound quality and Dirac are really good.

My main questions are around Dirac. I bought the calibrated microphone and upgraded to the full version of Dirac. I ran the 9 points with the guide in this thread.

My questions around the filters to use. I have Revel F208 fronts and a C205 center. I used the harman curve on all the speakers. The one guide I saw said to not use it on the sub but I did anyways. I am not sure which curve I should use on the sub. I also greyed out the frequency on the left side for the speakers up to where there are large dips. I did this on a per speaker basis. I then made sure the crossovers were above that threshold. I guess I just wanted to make sure I handled it right.

I then started doubting myself on speaker toe in and thought about rerunning all this again. I am curious how often you guys run the speaker calibration (changing toe in, location, etc) and how much manual tweaking you do.

PS I ordered my NAD t758v3 from Crutchfield and I got the new chip version if that helps ease anyone on ordering from them and getting the latest chipset.
You have to rerun DL every time you make changes, e.g. speaker toe-in.

Post your DLCT project to Dropbox or similar so we can have a look.

Markus

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post #3787 of 10077 Old 08-11-2018, 12:28 AM
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Quote:
Originally Posted by dmbmay98 View Post
I got this receiver a week and a half ago and really like it so far. There are some minor annoyances but sound quality and Dirac are really good.

My main questions are around Dirac. I bought the calibrated microphone and upgraded to the full version of Dirac. I ran the 9 points with the guide in this thread.

My questions around the filters to use. I have Revel F208 fronts and a C205 center. I used the harman curve on all the speakers. The one guide I saw said to not use it on the sub but I did anyways. I am not sure which curve I should use on the sub. I also greyed out the frequency on the left side for the speakers up to where there are large dips. I did this on a per speaker basis. I then made sure the crossovers were above that threshold. I guess I just wanted to make sure I handled it right.

I then started doubting myself on speaker toe in and thought about rerunning all this again. I am curious how often you guys run the speaker calibration (changing toe in, location, etc) and how much manual tweaking you do.

PS I ordered my NAD t758v3 from Crutchfield and I got the new chip version if that helps ease anyone on ordering from them and getting the latest chipset.
Nice you got the latest chipset sound module, was there a way to identify that on the box of the unit? any details mentioned on the box regarding the AM230 card version?


Thanks.
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post #3788 of 10077 Old 08-11-2018, 12:56 AM
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Originally Posted by blackspider View Post
Nice you got the latest chipset sound module, was there a way to identify that on the box of the unit? any details mentioned on the box regarding the AM230 card version?


Thanks.
Sure is. From Crutchfield this week.
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HT: Samsung PN64H5000 (recommended settings) | NAD T758 V3 | Buchardt S400 (2) | Polk LSiM 702 F/X (2) | Infinity RS152 (4) | Subs TBD (2)
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post #3789 of 10077 Old 08-11-2018, 01:27 AM
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Originally Posted by Soulburner View Post
Sure is. From Crutchfield this week.
hmmm, from the pic it just shows the AM230 is installed but doesn't mention if its the lastest revision.

Thanks
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post #3790 of 10077 Old 08-11-2018, 01:29 AM
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Where can find the Dirac 9 Point Guide here in Thread ?
Very Thanks !!!
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post #3791 of 10077 Old 08-11-2018, 01:31 AM
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Originally Posted by blackspider View Post
Quote:
Originally Posted by Soulburner View Post
Sure is. From Crutchfield this week.
hmmm, from the pic it just shows the AM230 is installed but doesn't mention if its the lastest revision.
I guess you're right. You could probably decode the serial number if you know someone who works at NAD...

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post #3792 of 10077 Old 08-11-2018, 01:45 AM
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Where can find the Dirac 9 Point Guide here in Thread ?
Very Thanks !!!
https://mehlau.net/audio/dirac-live-mic-levels/
https://mehlau.net/audio/dirac-live-avr-crossover/
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post #3793 of 10077 Old 08-11-2018, 01:47 AM
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I guess you're right. You could probably decode the serial number if you know someone who works at NAD...
i guess only way is by opening the box & checking the unit? hmmm i guess even the previous revision of the card should be good as long as i get no beeps in the optical input.

Any issues reported with the new version of the AM230 module card?


Thanks.
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post #3794 of 10077 Old 08-11-2018, 01:56 AM
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Any issues reported with the new version of the AM230 module card?
None yet.
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post #3795 of 10077 Old 08-11-2018, 03:35 AM
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None yet.
Date NAD reissued the new CARD?
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post #3796 of 10077 Old 08-11-2018, 03:40 AM
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Date NAD reissued the new CARD?
First time we've seen a picture posted was in May so I'd say Q2/2018.

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post #3797 of 10077 Old 08-11-2018, 03:44 AM
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Let them try and fix the unit. If that works, all good. If it doesn't then ask for a refund. Or, maybe the new card becomes available in the meantime.
OK, before I do this, could you please comment on the attached audio file? Here what I did (reproducible):

- I ran Netflix with Dobly Digital signal on my LG OLED app to the NAD via ARC (same problem if I use optical 1 or optial 2, no difference)
- The problems appear on the surrounds (my Atmos receiver and speakers are no longer attached)
- In the attached audio file, I have recorded the SR speaker from a short distance. You will hear clicks within the first 10 seconds. They are low volume. I did not notice them before. Around 20 seconds into the recording you will hear the beeps I have been reporting about earlier.

The other problem I could reproduce when the Atmos channels were still attached, was the very low input levels coming from the NAD. I had to max my external amp out, in order to hear something on my height speakers.



I'm pretty sure the second problem is due to the module, as others (including you) have reported the same, but do you think what you hear in the recording is related to the module, too?
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post #3798 of 10077 Old 08-11-2018, 03:45 AM
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I ordered from Music Direct. Coming Tuesday. I will take a picture of my card.
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post #3799 of 10077 Old 08-11-2018, 03:47 AM
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OK, before I do this, could you please comment on the attached audio file? Here what I did (reproducible):

- I ran Netflix with Dobly Digital signal on my LG OLED app to the NAD via ARC (same problem if I use optical 1 or optial 2, no difference)
- The problems appear on the surrounds (my Atmos receiver and speakers are no longer attached)
- In the attached audio file, I have recorded the SR speaker from a short distance. You will hear clicks within the first 10 seconds. They are low volume. I did not notice them before. Around 20 seconds into the recording you will hear the beeps I have been reporting about earlier.

The other problem I could reproduce when the Atmos channels were still attached, was the very low input levels coming from the NAD. I had to max my external amp out, in order to hear something on my height speakers.



I'm pretty sure the second problem is due to the module, as others (including you) have reported the same, but do you think what you hear in the recording is related to the module, too?
What you can hear beginning 0:22 IS the beeping noise problem. Get the card fixed/replaced.
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post #3800 of 10077 Old 08-11-2018, 03:56 AM
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What you can hear beginning 0:22 IS the beeping noise problem. Get the card fixed/replaced.
Thanks, Markus. You have been more helpful than all the NAD, Dynaudio and local dealer support folks together. NAD should pay you, really!
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post #3801 of 10077 Old 08-11-2018, 04:12 AM
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Thanks, Markus. You have been more helpful than all the NAD, Dynaudio and local dealer support folks together. NAD should pay you, really!
And Arcam
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post #3802 of 10077 Old 08-11-2018, 04:13 AM
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Well, the problem is that I do already cost them money
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post #3803 of 10077 Old 08-11-2018, 06:59 AM
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I'm going to run Dirac again today, to try and get more accurate measurements. The last four times I've run Dirac have consistently left my main speaker delays considerably different, and put the left side of the system louder than the right side.

I'm going to do a few things differently, including measuring and recording the SPL levels for each channel in the output and levels section when I set those levels. I'm also wondering about placing the mic in the "chair" positions instead of the "sofa" positions. I have three chairs in a line, but 90% of the time it's just the center chair being used. Any reason why I SHOULDN'T use the "chair" mic positions?
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post #3804 of 10077 Old 08-11-2018, 07:19 AM
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I'm going to run Dirac again today, to try and get more accurate measurements. The last four times I've run Dirac have consistently left my main speaker delays considerably different, and put the left side of the system louder than the right side.

I'm going to do a few things differently, including measuring and recording the SPL levels for each channel in the output and levels section when I set those levels. I'm also wondering about placing the mic in the "chair" positions instead of the "sofa" positions. I have three chairs in a line, but 90% of the time it's just the center chair being used. Any reason why I SHOULDN'T use the "chair" mic positions?
Do screenshots of each speaker level setting in DLCT and post them so we can see what might cause the issue.
How far from each other do you take measurements?
Selecting chair, sofa or auditorium is meaningless. It's just pictures and doesn't change the optimization process in any way.

What you also could try first is to just measure at one single position and optimize that. Still getting a 1ms delay between L and R?

Markus

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post #3805 of 10077 Old 08-11-2018, 07:24 AM
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Do screenshots of each speaker level setting in DLCT and post them so we can see what might cause the issue.
How far from each other do you take measurements?
Selecting chair, sofa or auditorium is meaningless. It's just pictures and doesn't change the optimization process in any way.
I will do the first position right at the MLP. the second withing 1' of that, and the third within 1' of the 2nd, etc. I'll post the screen shot of each speaker level setting when I run it, in the next couple of hours.
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I will do the first position right at the MLP. the second withing 1' of that, and the third within 1' of the 2nd, etc. I'll post the screen shot of each speaker level setting when I run it, in the next couple of hours.
Use a string and make sure the distance from L tweeter to mic tip position 1 and R tweeter to mic tip position 1 is the same.

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Last edited by markus767; 08-11-2018 at 07:52 AM.
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You have to rerun DL every time you make changes, e.g. speaker toe-in.

Post your DLCT project to Dropbox or similar so we can have a look.
Here is the link to my project in dropbox

https://www.dropbox.com/s/ivgpxa8wog...ct_2.dprj?dl=0
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I have a problem with surround playback from movies with a Dolby Digital or DTS soundtrack on Plex and Kodi from my Nvidia Shield TV.
On my Apple TV 4k i don't have this problem.

I have the surround mode on direct mode.

Listening Mode Setup:

Dolby Digital
Stereo: Dolby Surround
Surround: None

DTS
Stereo: None
Surround: None

Is there something i am doing wrong?
I have new info about the sound distortion issue i am facing.
After getting in touch with NAD support they advised me to send it back for repair. So i went that road and received it back a few weeks ago. A few weeks went by and no issue whatsoever.
Because they had done a factory reset i finally made time to do the Dirac calibration again.
Later in the evening when i start play a movie on my Nvidia Shield TV the metallic distortion sound reappeared. Because i did a Dirac calibration earlier that day it thought may-bey it has something todo with it.
After turning off Dirac Live in the DSP Options from the settings menu the metallic distortion sound was gone and when i enable the preset again it is metallic distortion sound back.
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post #3809 of 10077 Old 08-11-2018, 08:28 AM
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I have new info about the sound distortion issue i am facing.
After getting in touch with NAD support they advised me to send it back for repair. So i went that road and received it back a few weeks ago. A few weeks went by and no issue whatsoever.
Because they had done a factory reset i finally made time to do the Dirac calibration again.
Later in the evening when i start play a movie on my Nvidia Shield TV the metallic distortion sound reappeared. Because i did a Dirac calibration earlier that day it thought may-bey it has something todo with it.
After turning off Dirac Live in the DSP Options from the settings menu the metallic distortion sound was gone and when i enable the preset again it is metallic distortion sound back.
Please upload your DLCT project to Dropbox or similar.

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post #3810 of 10077 Old 08-11-2018, 08:32 AM
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Here is the link to my project in dropbox

https://www.dropbox.com/s/ivgpxa8wog...ct_2.dprj?dl=0
Depending on how capable your speakers are at the low end I would go for a 80Hz crossover for all speakers, i.e. extend response down to 40Hz. Side surrounds 100Hz (extend down to 50Hz).
Try to change location of your center in order to mitigate the 55Hz dip.

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