Originally Posted by LiLAsN
So I had my hands on the NAD T 778 finally for the past few days. Following the advice of someone who knows NAD and Dirac, they recommended doing 1 of the tighter measurements instead of choosing wide. What a big difference it makes. Wide just made everything sound messy.
And thanks to someone who gave a tip to ask for a discount code from Dirac on Facebook, got my hands on a discount code that gave me around 20% off for the Full Dirac Live software.
From my experience, even though the recommended range of correction should be less on the bass end, what I find with comparing between a limited range room correction vs the full range room correction is that it makes the speakers sound very synchronized to the point where I really can't pinpoint where the sound is coming from. All the speakers seem to blend into 1 with no 1 speaker having a different higher pitch sound than the other vs if I follow the recommended room correction range should be where I can pinpoint some speakers which has a much louder high pitch than another speaker for example. So to me, making it flat from 20hz to 20kHz makes everything sound very well balanced from all the speakers with no one speaker being more excited than the other. Love it.
However, the issue I have now is that the T778 tends to lose the Dirac Live profiles stored on the 3 slots when the receiver has not been receiving power for a few hours. This means that I have to constantly keep using the Dirac Live software to upload the calibration profile back into the T778 from time to time which is quite annoying.
Is this a sign that my unit needs repair or is this a firmware issue? Mine comes with the latest firmware. So there was no upgrade except for the BluOS side.
Hi, great that you're enjoying the 778.
In my case, I prefer the wide. But then again, I guess it depends on the room. I tried tight and got similar experience on my seating position (middle), not so much while seating at the extremities. Speaking of localization, last night watching Unbroken I got that feeling of spaciossness but there are moments I can clearly listen to specific sounds coming from different places, maybe not being able to say it was a particular speaker, just that it came from "there". I'm using the full range (20-20) but I'm not applying the filter all the way, especially after 18k because for some reason it dips on some speakers and I didn't want Dirac to boost those frequencies over 8db. Need to move my panels to correct those instead of trying to boost them.
Now the slots part... I have that as well. I never power off mine (reall power off, I leave on standby) but I do loose one or all slots when powering on. Doesn't happen often and sometimes it just looses the name and the slots are still there. Turn off and back on and they show up again. If powered off from behind, more often than not, they really go away and I have to load them again. Then I can load 1 and 2 and the third one even though it loads, it replaces one of the other and I have to repeat it. Sometimes it loads all with no problem. I think there is some sequence that works flawless but I haven't pin pointed exactly how. It doesn't happen much and I haven't been experimenting unless they don't show and like I said, power off and on usually does the trick. Coming from a Denon this is totally unnacceptable but having following up on some of the most recent receivers and processors status, this is such a small "problem" that I can surely live with it. But being honest, I wish I had went with the T758 and saved a ton of money for the same result in terms of audio performance, considering I use all external amps, my guess is that I would have been happy with it. Switching refresh rate and sources especially on the nvidia shield also gives me trouble sometimes since it loses signal and I get "rain". What I realized is that there's a combination f factors for some things to happen, it is not random but I haven't figured out exactly what trigger always causes something.