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post #8611 of 10516 Old 05-29-2019, 08:03 AM
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Originally Posted by DonoMan View Post
First time I've seen a claim that Cross Spectrum is reselling a microphone with the standard calibration file (rather than individually calibrating them and providing a custom file as they claim). Bold claim. Are you sure? What's your evidence of this being the case?
I'm not claiming anything. When one buys their Umik1 on the MiniDSP website you enter its serial number after receiving it and download the calibration files (normal and 90º) that have the mic's serial number as part of the file name. Does Cross Spectrum offer any similar proof that their calibration file is done by them and is different than the one MiniDSP has?

There shouldn't be anything wrong with either one, I just can't see paying more for one from another source.

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post #8612 of 10516 Old 05-29-2019, 08:19 AM
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It's not the same calibration. CSL will get you greater accuracy in the sub-bass and high treble where mics typically lose accuracy.

I do not have a standard UMIK to compare. I got the CSL years ago.

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post #8613 of 10516 Old 05-29-2019, 12:16 PM
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Quote:
Originally Posted by KenM10759 View Post
Does Cross Spectrum offer any similar proof that their calibration file is done by them and is different than the one MiniDSP has?

There shouldn't be anything wrong with either one, I just can't see paying more for one from another source.
Cross Spectrum provides a printout of the microphones response taken with high-end measurement gear along with 0, 45 and 90 degree calibration files for narrow band and 1/3 octave. You get what you pay for. I have both a UMIK and an EMM-6 from Cross Spectrum and they are both superbly calibrated.
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post #8614 of 10516 Old 05-29-2019, 12:24 PM
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Originally Posted by Dr. Niles Crane View Post
Quote:
Originally Posted by KenM10759 View Post
Does Cross Spectrum offer any similar proof that their calibration file is done by them and is different than the one MiniDSP has?

There shouldn't be anything wrong with either one, I just can't see paying more for one from another source.
Cross Spectrum provides a printout of the microphones response taken with high-end measurement gear along with 0, 45 and 90 degree calibration files for narrow band and 1/3 octave. You get what you pay for. I have both a UMIK and an EMM-6 from Cross Spectrum and they are both superbly calibrated.
And the adjustments are made compared to a higher-end reference mic. I am unsure of the process MiniDSP uses.

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post #8615 of 10516 Old 05-29-2019, 12:40 PM
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I don't know what can be learned from the files I got from MiniDSP for mine, but they're simple TXT files.

Are these 1/3rd octave increments? No clue.
Attached Files
File Type: txt 7035648.txt (9.8 KB, 12 views)
File Type: txt 7035648_90deg.txt (10.1 KB, 9 views)

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post #8616 of 10516 Old 05-29-2019, 04:46 PM
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I have never examined my UMIK's calibration file that closely (directly from miniDSP, not Cross Spectrum), but this one is in 1/56 octave intervals which is quite fine. It also goes from 10 Hz to 20 kHz which is enough for virtually everyone, unless you're the type that likes to chase single-digit output from your subs and measure that response.

Is the file provided by miniDSP specific to the mic you buy, or is it a batch file? And what measurement gear do they use to produce this data, compared to the gear Cross Spectrum uses? Those are the questions to answer to determine whether the extra cost is justified.

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post #8617 of 10516 Old 05-29-2019, 04:47 PM
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OK, I have a problem I just can’t figure out. For sometime now, I will hear a random thud/pop, followed by a rushing water/static sound from my subwoofer. It would often occur on commercials, seemingly randomly.

Today, I ran a subwoofer sweep and found that I could reproduce the noise whenever I played something really low, like 5-20hz. I played around even more and realized that I can almost completely eliminate the noise on those low notes when I set my subwoofer amplifier to a 80 Hz crossover, when I set the amplifier to crossover bypass, the noise comes back. Any thoughts?

(I have a Velodyne subwoofer powered by a SC-1250 amp.)
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post #8618 of 10516 Old 05-29-2019, 05:37 PM
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Ref Hybrid Log Gamma support

In theory one would expect the 758 v3 to support HLG since it already supports HDR10 and Dolby Vision. However, I couldn't find any mention of HLG support in NAD documents or on the website. IMHO NAD could do a much better job on their marketing and documentation, they seem to be under selling themselves. Anyway, with ATSC 3.0 starting to be rolled out and perhaps with real time streaming coverage also supporting HLG I thought I'd ask.


The answer from NAD online support is yes, per quote below. I assume there is media already out there, perhaps from the BBC, that would demonstrate HLG but I haven't seen anyone mention it in my perusing of the web, so thought I'd post.


"Yes the T758V3 (VM130) and T777 V3 (VM300) support HLG according to testing from July 2018"
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post #8619 of 10516 Old 05-29-2019, 06:04 PM
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Originally Posted by jnation View Post
In theory one would expect the 758 v3 to support HLG since it already supports HDR10 and Dolby Vision. However, I couldn't find any mention of HLG support in NAD documents or on the website. IMHO NAD could do a much better job on their marketing and documentation, they seem to be under selling themselves. Anyway, with ATSC 3.0 starting to be rolled out and perhaps with real time streaming coverage also supporting HLG I thought I'd ask.


The answer from NAD online support is yes, per quote below. I assume there is media already out there, perhaps from the BBC, that would demonstrate HLG but I haven't seen anyone mention it in my perusing of the web, so thought I'd post.


"Yes the T758V3 (VM130) and T777 V3 (VM300) support HLG according to testing from July 2018"

Funnily enough, someone over on AVForums posted about discovering HLG passthrough working today
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post #8620 of 10516 Old 05-29-2019, 06:08 PM
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Funnily enough, someone over on AVForums posted about discovering HLG passthrough working today
Well nice to actually have it confirmed "in the wild" too
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post #8621 of 10516 Old 05-30-2019, 10:01 AM
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T758 V3 ordered today. I am keeping my Adcoms and will calibrate the system and then play with having them in the loop versus the NAD on its own. Hopefully mine arrives without and Atmos hiss or distortion. The rest of the "stuff" I believe I can work through.

I'll post calibration results and listening tests opinions of which amp set up I like the best once up and running. I'll be away on vacation in a week and half so it may be middle of the month until I report back.

Back when I bought my first V3 I purchased the full version of DL, if I logon to my old account is it safe to assume I'll still have access to the full version?

Looking forward to using BluOS again versus HEOS and being able to enjoy my MQA files. Anyway, circle back around in a few weeks.

Trevor
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post #8622 of 10516 Old 05-30-2019, 10:04 AM
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Back when I bought my first V3 I purchased the full version of DL, if I logon to my old account is it safe to assume I'll still have access to the full version?

Yup, should do
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post #8623 of 10516 Old 05-30-2019, 12:16 PM
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Originally Posted by richardsim7 View Post
Funnily enough, someone over on AVForums posted about discovering HLG passthrough working today
Richard - that was me as they say. Eurosport in the UK is showing in 4K HLG and this displayed just fine on my LG C9. I was quite happy in that I didn't even know that my Virgin Media box supported HLG. So yes it does work - I have a T777 but I would have thought it would be the same on the 758.
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post #8624 of 10516 Old 05-30-2019, 07:14 PM
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T758 V3 ordered today. I am keeping my Adcoms and will calibrate the system and then play with having them in the loop versus the NAD on its own. Hopefully mine arrives without and Atmos hiss or distortion. The rest of the "stuff" I believe I can work through.

I'll post calibration results and listening tests opinions of which amp set up I like the best once up and running. I'll be away on vacation in a week and half so it may be middle of the month until I report back.

Back when I bought my first V3 I purchased the full version of DL, if I logon to my old account is it safe to assume I'll still have access to the full version?

Looking forward to using BluOS again versus HEOS and being able to enjoy my MQA files. Anyway, circle back around in a few weeks.

Trevor
Curious how the adcoms will sound over the NAD

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Originally Posted by Soulburner View Post
It's not the same calibration. CSL will get you greater accuracy in the sub-bass and high treble where mics typically lose accuracy.

I do not have a standard UMIK to compare. I got the CSL years ago.
Does the CSL file have the sensitivity calibration like minidsp? I bought the csl one years ago but is using the minidsp file instead because I think the csl does not have the sensitivity factor in the frd file.

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post #8626 of 10516 Old 05-31-2019, 10:10 AM
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Originally Posted by ttn333 View Post
Does the CSL file have the sensitivity calibration like minidsp? I bought the csl one years ago but is using the minidsp file instead because I think the csl does not have the sensitivity factor in the frd file.

You can just add the sens factor from the MiniDSP file to the CSL one
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post #8627 of 10516 Old 05-31-2019, 11:00 AM
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Just a quick question- is using DIRAC for sub measurements the exact same as using REW? The reason I ask is that I don't have a laptop, but my PC is on the other side of the wall from my seating area for measurements, so I'm able to just use a 10 ft. USB extension cord for my UMIK-1. On top of having to learn the software, using REW would also require me to use a 50 ft. hdmi cable to get from my PC to the closet where my AVR is. Basically my plan is to put my speaker settings as 2.1, keep the front L&R speakers disconnected, and run DIRAC sweeps to get measurements while I put my sub in different placements in the room to see if I have an available spot that measures way better than my current back corner spot. I assume this accomplishes the same goal as REW?

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post #8628 of 10516 Old 05-31-2019, 11:18 AM
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Originally Posted by sb01gt View Post
Just a quick question- is using DIRAC for sub measurements the exact same as using REW? The reason I ask is that I don't have a laptop, but my PC is on the other side of the wall from my seating area for measurements, so I'm able to just use a 10 ft. USB extension cord for my UMIK-1. On top of having to learn the software, using REW would also require me to use a 50 ft. hdmi cable to get from my PC to the closet where my AVR is. Basically my plan is to put my speaker settings as 2.1, keep the front L&R speakers disconnected, and run DIRAC sweeps to get measurements while I put my sub in different placements in the room to see if I have an available spot that measures way better than my current back corner spot. I assume this accomplishes the same goal as REW?

If you take a single measurement, then yeah, pretty much
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post #8629 of 10516 Old 05-31-2019, 11:22 AM
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Originally Posted by sb01gt View Post
Just a quick question- is using DIRAC for sub measurements the exact same as using REW? The reason I ask is that I don't have a laptop, but my PC is on the other side of the wall from my seating area for measurements, so I'm able to just use a 10 ft. USB extension cord for my UMIK-1. On top of having to learn the software, using REW would also require me to use a 50 ft. hdmi cable to get from my PC to the closet where my AVR is. Basically my plan is to put my speaker settings as 2.1, keep the front L&R speakers disconnected, and run DIRAC sweeps to get measurements while I put my sub in different placements in the room to see if I have an available spot that measures way better than my current back corner spot. I assume this accomplishes the same goal as REW?
Are you referring to using the Dirac mobile app?

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post #8630 of 10516 Old 05-31-2019, 11:43 AM
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You can just add the sens factor from the MiniDSP file to the CSL one
Using notepad copy and paste like so "Sens Factor =-7.063dB, SERNO: 7003044", including quotes? Just want to make sure I don't screw this up. Thanks
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post #8631 of 10516 Old 05-31-2019, 12:32 PM
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Are you referring to using the Dirac mobile app?

oops, no. I'm using the Dirac Live software on my PC, but I don't have the full $99 version yet as I've read it goes on sale at some points so I can wait.

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post #8632 of 10516 Old 05-31-2019, 05:31 PM
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oops, no. I'm using the Dirac Live software on my PC, but I don't have the full $99 version yet as I've read it goes on sale at some points so I can wait.
I think I have a better visual now. So you're saying the communication between the NAD AVR and your PC via your network is more convenient than running a very long HDMI, which would be required for Room EQ Wizard.

I would say yes, it should work. The main limitation is that the graphs aren't smoothed or scaled in the same way as REW so they aren't directly comparable, but for your own speaker and sub placement uses, I don't see why not.

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post #8633 of 10516 Old 05-31-2019, 05:36 PM
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Using notepad copy and paste like so "Sens Factor =-7.063dB, SERNO: 7003044", including quotes? Just want to make sure I don't screw this up. Thanks
Yes, as line 1, but without quotes, and you're golden.
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post #8634 of 10516 Old 06-02-2019, 07:08 PM
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I’m confident this has been asked ad nauseum but I can’t find it. Can someone link or explain again: difference between 758 and 777?

I need to get one of these for 5.1.4 and ideally also power a second zone. I already own a external 200 x 7 channel amp.
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post #8635 of 10516 Old 06-02-2019, 07:32 PM
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I’m confident this has been asked ad nauseum but I can’t find it. Can someone link or explain again: difference between 758 and 777?

I need to get one of these for 5.1.4 and ideally also power a second zone. I already own a external 200 x 7 channel amp.
80 Watts Per Channel all channels driven (T777) vs 60 Watts Per Channel (T758)
5 HDMI Inputs (T777) vs 3 (T758)
2 HDMI Outputs (T777) vs 1 (T758)
Additional Analog Audio inputs (T777)
NAD PowerDrive circuitry (T777)
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post #8636 of 10516 Old 06-02-2019, 08:49 PM
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Originally Posted by carminepesce View Post
80 Watts Per Channel all channels driven (T777) vs 60 Watts Per Channel (T758)
5 HDMI Inputs (T777) vs 3 (T758)
2 HDMI Outputs (T777) vs 1 (T758)
Additional Analog Audio inputs (T777)
NAD PowerDrive circuitry (T777)
And the upcoming Dirac modules? Or is that a no on both units?

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post #8637 of 10516 Old 06-02-2019, 09:16 PM
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Quote:
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Quote:
Originally Posted by carminepesce View Post
80 Watts Per Channel all channels driven (T777) vs 60 Watts Per Channel (T758)
5 HDMI Inputs (T777) vs 3 (T758)
2 HDMI Outputs (T777) vs 1 (T758)
Additional Analog Audio inputs (T777)
NAD PowerDrive circuitry (T777)
And the upcoming Dirac modules? Or is that a no on both units?
Ahh I forgot about that. I’m not sure which models those will be compatible with yet.

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post #8638 of 10516 Old 06-02-2019, 09:21 PM
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The T777 also has 2 sub preouts - however it is just a y-splitter, so a non-feature. Very disappointing at that price. It also means more will be needed to calibrate two subs.

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 #8639 of 10516 Old 06-03-2019, 07:21 AM
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Quote:
Originally Posted by sb01gt View Post
oops, no. I'm using the Dirac Live software on my PC, but I don't have the full $99 version yet as I've read it goes on sale at some points so I can wait.
We initially offered a discount on Black Friday as an introduction to the Full bandwith upgrade because many underestimated the importance of perfectly matched speakers pairs for imaging...
but we will not repeat that in the foreseeable future including the next Black Friday.

Just for information
Flavio
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Warning: My posts might be biased even if in good faith, I work for Dirac Research :-)

Last edited by flax; 06-03-2019 at 07:25 AM.
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post #8640 of 10516 Old 06-03-2019, 07:41 AM
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Quote:
Originally Posted by flax View Post
We initially offered a discount on Black Friday as an introduction to the Full bandwith upgrade because many underestimated the importance of perfectly matched speakers pairs for imaging...
but we will not repeat that in the foreseeable future including the next Black Friday.

Just for information
Flavio
Even at full price, Dirac Live full version is still an incredible bargain for what it is and is capable of doing. Plus the support you get for it! Huge value!
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KEF R500, R200C, R100, R50, SVS SB2000 sub, NAD T758v3 AVR, LG UP875 4K BlueRay, Samsung UN55JU6500F 4K LED TV, KEF M500 headphones, Sony CDP-CE500 CD changer. Office: NAD M10, KEF LS50, KEF Kube 10b, Pro-Ject RPM1 TT w/ Ortofon 2M Red. Guest room: Hafler 300 L-R, KEF Reference Model 100 center, KEF iQ10 surrounds, modded M&K V-90 sub, Bluesound Vault 2.
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