The Official Onkyo 2015 TX-NR545/646/747/848 Thread - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 2019 Old 05-16-2015, 07:35 PM - Thread Starter
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The Official Onkyo 2015 TX-NR545/646/747/848 Thread

Now we have the TX-NR545/646 and 747 announced. Whilst im not sure about the 848 as of yet.

In General its not much of a upgrade over the 2014 models providing DTS:X and HDMI 2.0A support with full 4k 60hz YCbCr and HDCP 2.2 Support.

I'll update this post should when i get more information.

TX-NR545 Details on Onkyo UK's Website

TX-NR646 Details on Onkyo UK's Website
TX-NR646 Onkyo USA
TX-NR747 Details on Onkyo UK's Website
TX-NR747 Onkyo USA

LG 55LA970W - Oppo 103D - Onkyo TX-NR636 - Kef Q1,5,9C speakers and Rel 150 sub - Sennheiser HD650 Headphones

Last edited by WhiskeyOmega; 05-19-2015 at 01:00 PM.
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post #2 of 2019 Old 05-17-2015, 02:45 AM
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^^
Important to note those are UK model links which do not feature Slacker so best to also post USA model information when available which do include Slacker. Also, although all HDMI inputs are HDMI 2.0a, only HDMI 1-3 (ie. rear panel) are HDCP 2.2.

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post #3 of 2019 Old 05-18-2015, 07:19 PM
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post #4 of 2019 Old 05-25-2015, 12:27 PM
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im surprised to not see more posts about this receiver here.

for 700 $ you get receiver with atmos,DTS:X and HDMI 2.0A support . Plus all other great features
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post #5 of 2019 Old 05-25-2015, 01:15 PM
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^^
Likely because AFAIK the units aren't available until sometime in June and most posts are generally folks having problems with setup or issues with the AVR.
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post #6 of 2019 Old 05-28-2015, 08:23 AM
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Onkyo sure is fast getting these new formats to market! I have a relatively new 838..which I am very happy with.....but I gotta say that I am keeping an eye on DTS-X.......I think this will become a big 'new' format.........

Aw ...shucks....who has room for extra speakers anyway.........badabing!
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post #7 of 2019 Old 06-03-2015, 05:59 PM
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Looks like the 646 is available on Amazon now for $599. Funny that it's already $100 off MSRP. Looking forward to hearing some reviews from those who pick one up!
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post #8 of 2019 Old 06-03-2015, 10:14 PM
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I must be missing something, but I can't see why I would spend $300 more for the 747 over the 646. Seems a lot for 10 more watts/channel at 8 ohms.
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post #9 of 2019 Old 06-04-2015, 08:50 AM
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747

Quote:
Originally Posted by Dave_O View Post
I must be missing something, but I can't see why I would spend $300 more for the 747 over the 646. Seems a lot for 10 more watts/channel at 8 ohms.
I noticed it's about 3" deeper, and a few pounds heavier, there must be other goodies in there? Wonder if an 848 is in the near future, (upgraded 838 w/DTS:X) now you'd get me interested. Want 7.1.2 Atmos and DTS:X..

Last edited by jleroy68; 06-04-2015 at 08:57 AM. Reason: Added verbage
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post #10 of 2019 Old 06-04-2015, 10:27 AM
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I posted this in a different thread and it was suggested that I check in over here to get a better response. Thanks in advance!

I just ordered an Onkyo 646 because I wanted the following and it seemed to be the best bet:

- HDMI 2.0 + HDCP 2.2 (preferably more than one port!)
- Phono pre-amp
- HDMI front port
- Bluetooth, Airplay, Pandora

I have two questions:
- Is the 646 overkill? For the money (now around $600 on Amazon) it seems like the best package.
- Will I be able to run a 6.1 setup with the receiver? I bought my current setup (Pioneer 814 and a Yamaha 6.1 speaker package) 11 years ago or so. I just recently installed the center rear channel so I'll be a little bummed if I can't use it! (I suppose I could just get another speaker and then go 7.1, huh?)

Thanks!!
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post #11 of 2019 Old 06-04-2015, 01:35 PM
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I think the Onkyo 636 also fits your requirements and would be a bit cheaper.
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post #12 of 2019 Old 06-04-2015, 01:56 PM
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Quote:
Originally Posted by yeah-yeah View Post
I posted this in a different thread and it was suggested that I check in over here to get a better response. Thanks in advance!

I just ordered an Onkyo 646 because I wanted the following and it seemed to be the best bet:

- HDMI 2.0 + HDCP 2.2 (preferably more than one port!)
- Phono pre-amp
- HDMI front port
- Bluetooth, Airplay, Pandora

I have two questions:
- Is the 646 overkill? For the money (now around $600 on Amazon) it seems like the best package.
- Will I be able to run a 6.1 setup with the receiver? I bought my current setup (Pioneer 814 and a Yamaha 6.1 speaker package) 11 years ago or so. I just recently installed the center rear channel so I'll be a little bummed if I can't use it! (I suppose I could just get another speaker and then go 7.1, huh?)

Thanks!!
6.1.1 is interesting, does it work? I'm going with 7.1 and using my rear speakers high up to ceiling and see if that works on the 747' unless of course an 848 decides to rear its head.
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post #13 of 2019 Old 06-04-2015, 02:16 PM
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Quote:
Originally Posted by Marauder View Post
I think the Onkyo 636 also fits your requirements and would be a bit cheaper.
Unfortunately the 636 doesn't have full bandwidth HDMI 2, otherwise I would have purchased it months ago!
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post #14 of 2019 Old 06-04-2015, 02:22 PM
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Quote:
Originally Posted by jleroy68 View Post
6.1.1 is interesting, does it work? I'm going with 7.1 and using my rear speakers high up to ceiling and see if that works on the 747' unless of course an 848 decides to rear its head.
I haven't gotten it yet, just ordered it the other day. I just read through the manual and it says the following:

Quote:
A speaker configuration where only one back speaker is connected is not supported.
So my guess is that it won't do 6.1, though I don't know if many receivers these days support 6.1. It's a fairly small space -- the left surround speaker is about 10' from the right surround speaker, so having a pair in the center back seems a bit overkill.
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post #15 of 2019 Old 06-04-2015, 02:34 PM
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Quote:
Originally Posted by yeah-yeah View Post
I haven't gotten it yet, just ordered it the other day. I just read through the manual and it says the following:



So my guess is that it won't do 6.1, though I don't know if many receivers these days support 6.1. It's a fairly small space -- the left surround speaker is about 10' from the right surround speaker, so having a pair in the center back seems a bit overkill.
Thanks for that. I doubt a pair of rear speakers up high will work the true Atmos either. I guess if we go with the 5.1.2 were stuck with the addon speakers to the front (or alone in the back)? Or just be patient and wait for the 848 which I would think is soon to follow.
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post #16 of 2019 Old 06-04-2015, 02:43 PM
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Quote:
Originally Posted by jleroy68 View Post
Thanks for that. I doubt a pair of rear speakers up high will work the true Atmos either. I guess if we go with the 5.1.2 were stuck with the addon speakers to the front (or alone in the back)? Or just be patient and wait for the 848 which I would think is soon to follow.
From what I read, you have to use ATMOS speakers, they can't be just any old speakers pointed in the proper direction. On the other hand, it looks like DTS:X won't require special speakers and will work with most speaker setups. I suppose I can try and find a match for my surround speakers and just go 7.1 for the time being.
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post #17 of 2019 Old 06-04-2015, 03:05 PM
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Quote:
Originally Posted by Dave_O View Post
I must be missing something, but I can't see why I would spend $300 more for the 747 over the 646. Seems a lot for 10 more watts/channel at 8 ohms.
THX2 certified

certified for 4 ohm speakers

Pretty much the only difference. If you have hard to drive speakers it might be worth the extra.

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post #18 of 2019 Old 06-04-2015, 11:43 PM
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Quote:
Originally Posted by yeah-yeah View Post
From what I read, you have to use ATMOS speakers, they can't be just any old speakers pointed in the proper direction. On the other hand, it looks like DTS:X won't require special speakers and will work with most speaker setups. I suppose I can try and find a match for my surround speakers and just go 7.1 for the time being.
You can still use any ceiling speakers you want, but yeah the reflecting kind are all "Atmos" branded.
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post #19 of 2019 Old 06-05-2015, 02:59 AM
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Quote:
Originally Posted by yeah-yeah View Post
From what I read, you have to use ATMOS speakers, they can't be just any old speakers pointed in the proper direction. On the other hand, it looks like DTS:X won't require special speakers and will work with most speaker setups. I suppose I can try and find a match for my surround speakers and just go 7.1 for the time being.
As long as the front/rear wall mounted or ceiling speakers can be aimed (or have aimable tweeters) at the main listening position, they should work just fine. Also, a number of members have found just angling a set of regular bookshelf or satellite speakers up at the ceiling provides almost the same effect (with some experimentation required to determine best angle) as using the Dolby enabled speakers (Onkyo SKH-410, Def Tech A60, Atlantic Tech 44-DA).
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post #20 of 2019 Old 06-05-2015, 10:50 AM
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Quote:
Originally Posted by jdsmoothie View Post
As long as the front/rear wall mounted or ceiling speakers can be aimed (or have aimable tweeters) at the main listening position, they should work just fine. Also, a number of members have found just angling a set of regular bookshelf or satellite speakers up at the ceiling provides almost the same effect (with some experimentation required to determine best angle) as using the Dolby enabled speakers (Onkyo SKH-410, Def Tech A60, Atlantic Tech 44-DA).
Huh! Interesting. This article says that you need at least two Atmos-enabled speakers, hence my confusion. Thanks for clearing that up!
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post #21 of 2019 Old 06-05-2015, 10:34 PM
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Quote:
Originally Posted by yeah-yeah View Post
Huh! Interesting. This article says that you need at least two Atmos-enabled speakers, hence my confusion. Thanks for clearing that up!
What I understand is for the Atmos to do its thing
it needs Atmos speakers. But like another commenter I'm going to try moving mine around to see what happens. Dolby may get smoked by DTS:X and it may not even matter?
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post #22 of 2019 Old 06-06-2015, 11:41 AM
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DTS:X will be way better then atmos and no installation required. Really don't understand all this talk about Atmos.

This onkyo receiver cost only 599 $ . And you are fine for net 5 years. Off course, if you don't want Atmos
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post #23 of 2019 Old 06-09-2015, 05:21 AM
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Quote:
Originally Posted by jleroy68 View Post
What I understand is for the Atmos to do its thing
it needs Atmos speakers. But like another commenter I'm going to try moving mine around to see what happens. Dolby may get smoked by DTS:X and it may not even matter?
For any 3D audio format to "do it's thing" requires placing speakers either in the ceiling, high up on the front/rear walls, or bouncing the audio off the ceiling in order to provide a "height" sensation above the floor speakers. Such speakers do not necessarily have to be branded as "Atmos" speakers.
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post #24 of 2019 Old 06-09-2015, 05:53 AM
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Originally Posted by dario888 View Post
DTS:X will be way better then atmos and no installation required. Really don't understand all this talk about Atmos.

This onkyo receiver cost only 599 $ . And you are fine for net 5 years. Off course, if you don't want Atmos
Based on what? I really like it when a newbie puts up a post with no facts except saying its better
The fact you don't understand Atmos says a lot about your understanding of DTS:X.

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post #25 of 2019 Old 06-09-2015, 02:18 PM
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AAC support

Just got a 646 and the setup went pretty well. I have a WDTV box capable of playing files with AAC audio. When the WDTV does an HDMI auto config with the 646 to determine which audio types are supported, it shows AAC as not supported. Forcing the WDTV to AAC on for the 646 results in no audio.

Are there any special settings needed on the 646 to enable AAC support?

**** EDIT ****

In looking through the full manual, the 646 does not support AAC over HDMI, only for file playback.

Last edited by Dave_O; 06-09-2015 at 04:30 PM.
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post #26 of 2019 Old 06-10-2015, 05:30 AM
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Any speculation on what a proposed TX-NR848 would have over and beyond the TX-NR747?
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post #27 of 2019 Old 06-10-2015, 05:56 AM
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^^
At the very least ... the same features as the NR838 ... Zone 2 HDMI output, 7.2 pre-outs, Front Wide and Front Height dedicated speaker posts, Zone 2/3 pre-outs (fixed/variable) and HDMI PCM 2.0 to Zone 2 (vice only analog on lower models).
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post #28 of 2019 Old 06-10-2015, 08:13 AM
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TX-NR646 - First impressions

Setup - no major issues, WIFI connected, Speakers auto setup with included calibration mic at 1 seating position.

The 646 is much cooler in operation than my previous Integra DTR 8-9 which got so hot I put a PC fan on the top of it.

Harmony Remote - while the 646 is not yet in the Harmony Database, setting up the Harmony as a 636 worked with one odd exception. The Harmony could not select the STRM BOX HDMI 3 input. I'll assume Logitech fixes it with official 646 support.

Gapless FLAC playback from USB - works, however USB drives need to be formatted as FAT32. NTFS or EXFAT won't work. This limits the Windows supported USB drive size to 32GB, which is too small for a large FLAC music collection. No album art support from USB, pretty basic UI.

Pandora works fine.

Accessing media from local SMB shares. Currently I've not been able to get this to work. The 646 sees the 2 SMB servers, but selecting either one shows no content. Content is shown on multiple other devices. I have opened a support call with Onkyo.

Last edited by Dave_O; 06-10-2015 at 08:17 AM.
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post #29 of 2019 Old 06-10-2015, 08:15 AM
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^^
There are programs you can use to extend the FAT32 partition size up to 2TB.

http://tokiwa.qee.jp/EN/Fat32Formatter/
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Last edited by jdsmoothie; 06-10-2015 at 08:29 AM.
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post #30 of 2019 Old 06-10-2015, 05:55 PM
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^^
There are programs you can use to extend the FAT32 partition size up to 2TB.

http://tokiwa.qee.jp/EN/Fat32Formatter/

Thanks. I tried it on a 1.5 TB WDC Passport and it worked fine. No apparent issues with the 646.
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