Rotel rsp1570 no Dolby True HD

[sebulba]

Hi

I'm new here. Live in Sweden and enjoying my newly bought Rotel. Not always though

I have a problem, the problem is that I don't get any audio from my speakers when in Dolby True HD mode. The processor says Dolby True in the display.
Tried every other format including Dolby Digital and all works fine, only Dolby True that doesn't work. Anyone having any idea?

Regards
Daniel

[Blindamood]

You don't mention the source or the connection you're using, so just taking a wild swing...did you set the blu-ray player to Bitstream, and also to something higher than 48K? On the Oppo BDP-83, for instance, you have to tell it that your processor can handle either 96K or 192K if you're using the optical or coaxial digital connection.

[sebulba]

Hi

Thanks for the reply. Going to check if that is possible to chose.

I use HDMI as connection with a cheap blu-ray player from Pioneer (Pioneer BDP150). Yes I've set the output to bitstream. The processor recognize and do everything correct with every other format. Except from Dolby True.
Will take a look at the player's setup menu again.

I have the previous audio firmware if that might have anything to do with it.

Regards
Daniel

[Blindamood]

It looks like that player has a Downsampling option that defaults to 48K. Try setting this to 96K or 192K and see if that helps. (As a side note, the player's manual also says it cannot output 96kHz or 192kHz signals via the Digital Out connection; if you do, it is downconverted to 48kHz. But since you use HDMI that should not be an issue.)

[sebulba]

Thank again for taking the time, very appreciated!

Tried that still don't work. It's really weird since every other format (DTS Master etc.)
works fine.

Trying at the moment to install the latest audio firmware. But the computer can not communicate with the Rotel. Bought a Dlink Dub but maybe it's the wrong type of adapter, if so what do I need to buy to do it right?

I have the 1.13 audio firmware.

Man this is killing me. Want to use Dolby, know I can make the blu-ray player send PCM mch but then it defeats the purpose of me buying the Rotel

Regards
Daniel

[june]

sebulba,

what bluray disc have you tried?

[srb]

Trying at the moment to install the latest audio firmware. But the computer can not communicate with the Rotel. Bought a Dlink Dub but maybe it's the wrong type of adapter, if so what do I need to buy to do it right?

The Computer I/O RJ-45 jack on the Rotel is not an Ethernet port, but is actually a serial port connection. It sounds like what you purchased may have been a USB > Ethernet adapter?

If your computer does not have a serial port, then you would need one of the following:

1. It you have a desktop computer and it doesn't have a serial port, many motherboards have a serial port header that can be connected to an inexpensive (~$5) serial port bracket installed in an unused slot.

2. A USB > Serial Port Adapter

The serial port would be used in conjunction with the supplied Rotel DB9 to RJ-45 serial cable.

Steve

[Kevin D]

You will need a good USB to serial adapter and Windows. Don't just update the audio firmware, you need to upgrade all three to the latest version to work correctly.

Also don't forget to default the unit after the updates (might do it automatically). Might want to grab the Rotel Setup Utility to back up your settings first.

Kevin D.

[sebulba]

sebulba,

what bluray disc have you tried?

I've tried Casino Royale, Batman: Dark knight, Joe Bonamassa Live Royal Albert Hall and David Gilmour Remember that night.

[sebulba]

The Computer I/O RJ-45 jack on the Rotel is not an Ethernet port, but is actually a serial port connection. It sounds like what you purchased may have been a USB > Ethernet adapter?

If your computer does not have a serial port, then you would need one of the following:

1. It you have a desktop computer and it doesn't have a serial port, many motherboards have a serial port header that can be connected to an inexpensive (~$5) serial port bracket installed in an unused slot.

2. A USB > Serial Port Adapter

The serial port would be used in conjunction with the supplied Rotel DB9 to RJ-45 serial cable.

Steve

Yes bought a ethernet adapter. Works fine to browse the web with

Will buy serial port adapter tomorrow. Don't have the original cable from Rotel.
But a computer store might have a similar that will work or am I wrong?

Regards
Daniel

[srb]

Will buy serial port adapter tomorrow. Don't have the original cable from Rotel. But a computer store might have a similar that will work or am I wrong?

I'm afraid you may be out of luck at a computer store as it is not a standard DB9 to RJ-45 serial cable, having a different wiring scheme.

I would first contact Rotel or your Rotel dealer and see if they can provide one for you.

Otherwise, if you're handy or know a computer store that would build one for you, this is the wiring configuration:

http://bwgroup-support.com/downloads/rs232/rotel/RJ45connection.pdf

Steve

[kcsun]

I may be on the wrong track but I think the Rotel amp only has HDMI 1.3 connections, I think if you want to listen to Dolby True HD you need HDMI 1.4 connections
Please don't shoot me if I am wrong
kc

[srb]

I may be on the wrong track but I think the Rotel amp only has HDMI 1.3 connections, I think if you want to listen to Dolby True HD you need HDMI 1.4 connections
Please don't shoot me if I am wrong

Kapow!

According to the Rotel RSP-1570 manual:

"Dolby TrueHD is supported by the HDMI v1.3 digital connection. Dolby TrueHD supports up to eight full-range channels (the maximum allowed by Blu-Ray) of 24-bit/96 kHz audio."

and

"DTS-HD Master Audio is compatible with the HDMI v1.3 connection standard, and supports a maximum of 192kHz sampling at 24-bit depth in two-channel mode, and 24bit/96KHz resolution for eight channels in multichannel mode."

I think the main differences between HDMI 1.3 and 1.4 are that 1.4 supports higher 2K/4K resolutions, supports 1080p in 3D (versus 1080i), has an Audio Return Channel and an Ethernet link channel.

Steve

[kcsun]

;-x :#


I will just go and lay in a corner somewhere ;x(

kc

[Blindamood]

Yup, we know it does TrueHD, so that's not the issue. I did, however, update mine before I installed it into my system.

[june]

sebulba,

last night i played the dark knight. this film defults to dolby digital after loading. when the movie started i hit the audio button on the bluray remote the the dolby ture hd kicked in. some older films goes to dobly digital first.

[madmac]

Hey June, What did you think of the the Dolby True HD ??. I'm curious how big of a difference it is over standard DD.

[sebulba]

I know. Got a little hope when I got sound from my speakers but saw it was on Dolby Digital. Pushed the audio button to Dolby True and the Rotel indicates Dolby True HD but no sound

Regards
Daniel

sebulba,

last night i played the dark knight. this film defults to dolby digital after loading. when the movie started i hit the audio button on the bluray remote the the dolby ture hd kicked in. some older films goes to dobly digital first.

[sebulba]

Ah ok to bad. Have to contact Rotel or a Rotel deal here in Sweden to see if they can get me a new upgrade cable.

Can it be the player that's causing this? Although I think it might be strange since every other format, PCM 2ch multich., every DTS formats and Dolby formats except for True HD of course.
Maybe I'll try a different BD-player tomorrow.


Thanks everyone for the help.

Regards
Daniel

I'm afraid you may be out of luck at a computer store as it is not a standard DB9 to RJ-45 serial cable, having a different wiring scheme.

I would first contact Rotel or your Rotel dealer and see if they can provide one for you.

Otherwise, if you're handy or know a computer store that would build one for you, this is the wiring configuration:

http://bwgroup-support.com/downloads/rs232/rotel/RJ45connection.pdf

Steve

[june]

selbulba,

difference, cleaner, more separation & details with the HD surround sounds. It's more DTS MASTER HD titles than DOBLY TRUE HD. I was very dissapointed when transfromers 3 wasn't in DTS MASTER HD :M
I decode them via 6-channels out of a sony bluray into the rotel rsp 1068.

[ldgibson76]

Yup, we know it does TrueHD, so that's not the issue. I did, however, update mine before I installed it into my system.

Hello Blindamood.

If you don't mind me asking, which blu-ray title are you using that's producing the DTHD 96 kHz audio signal?

Secondly, are you allowing your 1570 to decode or do you have your player decoding and sending the signal LPCM via HDMI?

I have 2 titles with the 96 kHz sample rate:

The Professional (Leon) DTS-HD/MA 5.1 (24 bit/96 kHz)
Chris Botti: In Boston TrueHD 7.1 (24 bit/96 kHz)

In my case, because of the 1.1v HDMI stage in the 1069, the decoding and converting to LPCM is done at the player and sent via HDMI.

Setting my player (S5000ES) to direct, it does send a 96 kHz signal if that is indeed the sample rate on the blu-ray disc.

[Blindamood]

Hello Blindamood.

If you don't mind me asking, which blu-ray title are you using that's producing the DTHD 96 kHz audio signal?

Secondly, are you allowing your 1570 to decode or do you have your player decoding and sending the signal LPCM via HDMI?

Not sure what I was playing that day, but I know that "Dave Mathews and Tim Reynolds - Live at Radio City" is a great example of Dolby TrueHD in 96kHz. I also have the Chris Botti disc you mention, which is a good one.

I have the Rotel doing the decoding...otherwise it would not display Dolby TrueHD. When I play 5.1 DVD Audio, for example, it displays MULTI CHANNEL, since the Oppo is sending LPCM.

[sebulba]

I've given up. Can't get hold of the data cable. Will probably switch to the new Marantz processor.

Anyway thanks everyone for taking your time to help me!

Regards
Daniel

[Kevin D]

If you can get a hold of the distributor, here's the parts number and US price:

RSP-1570 ACCESSORIES CB00004 CABLE, SOFTWARE UPGRADE, 6 FT $4.00 In Stock

[Stilgar]

Hi everybody )
Help please, I'v got two questions:
First: did anybody hear some little noise, like whistling, in right channel when use pause during movie?
Second: Is it normal when using analog-to-digital converter for analog inputs some crackle appear?