The NAD T775/T785 AVRs w/ HDMI 1.3 Thread! - Page 9

So with the available fix in regards to the 8 channels of LPCM, is it still not possible to pipe 5.1 SACD through the HDMI into the Nad ?

once the fix is in place, if your player can convert multichannel SACD to 5.1 LPCM channels, you will be able to send multichannel SACD over HDMI.

what you will not be able to do, however, is send a native SACD DSD bitstream over HDMI to the NAD T775/T785/T175. That feature is not scheduled for inclusion (to my knowledge) for the foreseeable future, although with modular construction one cannot wholly rule it out.

Once I have the fix, I will let you know how everything works. I don't expect it immediately, though, as it sounds like NAD is still figuring out the best way to handle it.

John,

Curious if the T775 will convert the two LPCM channels you do get to 7.1 using DPLIIx or NAD's proprietary mode.

Did NAD indicate what you will have to do for the fix? Return unit to a repair center/dealer/do it yourself?

Pretty much verbatim, but I got the same response from NAD support:

"On the very first T775 units, 8 channel LPCM over HDMI is not supported, only 2 channels. However, NAD will cover the cost of a solution which will enable 8 channels of LPCM over HDMI. Please contact your dealer to have this work done."

Anyway, it's a big relief to know it's only the early units and that there's a fix for them.

yes it does. this function works currently without the fix.

it will apply the following surround algorithms to any two-channel source: PL, PLIIx (movie or music), EARS (NAD proprietary), DTS Neo6 (movie or music), stereo, or enhanced stereo (all channels driven).

not yet. If I had to guess, I would assume this is a software/firmware upgrade. I'm guessing this because according to rumor the other AV units in this line are being delayed due to firmware updates (the firmware that the T775 probably should have received). Whether or not NAD will allow it to be done in the field is the real question--I'd rather not ship my T775 back to the dealer.

As has been suggested in the T175 thread, all three units should really have the same firmware as they all contain the same processing hardware. the fact that the t775 was released earlier than the others suggests that it was released without the upgrade.

Anyway, if it is a software upgrade, I am very hopeful that it will be field-upgradeable. I'll let you know what I find out.

Don't all or most 7.1-channel receivers do that already?

Sanjay

"Don't all or most 7.1-channel receivers do that already?"

Yes, but it seems that if HDMI is involved "do" can become "should do but doesn't".

I believe that it will, as it does this with PCM and 2.0 Dolby/DTS over digital now.

So how do you figure we will know between the original 775 and the corrected ones. Will the corrected ones be identified by serial #. I would hate to get one in and then have to test it only to find out I did not wait long enough.

well, I can't help you there. I highly doubt NAD will make this information public. However, if you are unlucky enough to get one that requires this update, NAD is covering the cost of it, so at least it is free. The only downside is the hassle of going through the update process.

Your best bet is to work with your dealer before purchasing, and ask them to test LPCM functionality.

Can a lucky owner post a picture of the 775 remote? Curious what it looks like. From what I understand the 785 has a remote with a display?

don't have picture handy at the moment but it is almost identical in appearance to the HTR-2 remote. There is a picture of that on the NAD website.

Does the HTR3 use the same ir-keys like the HTR2? Or is it possible to change them? I want to have the T775 and my old T762 in the same room.

Rec' answer to question from NAD: T785s will not be affected by HDMI 2 channel problem.

Don't know if anyone else reported this, but the 775/785 product sheets and 775 manual are now on NAD's web site. The 775 & 785 product sheets are almost exact copies except for the power specifications and description of the remote.

The docs also mention a Ipod dock that will be available that connects to a data port to support control and display info by the receiver.

They also mention a DAB radio connector for use with an optional module. Thought this might be also for HD-radio, but doing a search shows that DAB may be European system only. The manual also mentions a XM connector but doesn't show up on the drawing of the back of the unit.

The manual is short (44 pages) but does answer some of my questions. Like if A+B speakers are selected then the source is down mixed to stereo.

Sure would be nice to know what serial #s of T775 are affected by this LPCM problem as I am expecting mine in tomorrow.

I don't think my unit has a DAB radio connector, but I'll verify this tomorrow. It does have the XM and iPod connectors, however.


I did mention this earlier in the thread in response to your question, but I'm glad you found the manual regardless. I find the manual to be relatively lacking in information...

You could try posting this question on the NAD website help center, although I doubt you'll get an answer by tomorrow.

" I find the manual to be relatively lacking in information..."

Yeah, not a word about Audyssey Pro.

Thanks, must have missed your reply on this. Thanks for all your answers!

Maybe the DAB is only European models and XM on U.S.?

Are you bi-amping your fronts?

The Bi-amping option seems very vague in the manual

775 owners!

Can you Bi amp the fronts using the surround backs AND listen to surround modes (5.1 or 4 channel stereo etc) at the same time OR can you only listen to 2 front channels if you select bi-amp ?

Ken

I Bi-Amp my fronts using the Backs on the T775 and can still listen to 5.1. So yes, it does support all 5.1 surround modes while bi-amping. It's too bad there is no bridging capabilities though ...

Also relating to your bi-amp question, when bi-amping your fronts using the back amp, the back speaker pre-outs are still active for the back speakers. Meaning you could actually still get 7.1 if you used another amp for your backs.

I thought Bi-amp was another word for bridging on the Nad, i.e. doubling the amplification for the fronts

No ... bi-amping can only be used if your speakers support it. Your speaker must have two separate binding posts, which basically split your speaker in two. You then drive these two portions of your speaker with separate amps.

Bridging is when you use two amps together to double your output voltage, which theoretically gives your 4 times the power ...

oh, i thought the back surround and fronts could be bridged

Thanks for the info

Ken

Not at the moment. I'm waiting until I get my 775 fixed before I go through running cable for the setup. I have a 6.1 setup so I've been debating getting rid of the rear surround channel. I find that the rear surround channel opens up the surround soundstage quite a bit so I'm rather loathe to remove it.

I've never bi-amped my fronts...have you done this? Do you find the sonic gains significant enough that it will make me forget about the rear surround channel? Just curious...