Rotel Support
We are here to help you with any questions you might have about your Rotel products and devices, or we can offer insight into the world of sound and sound quality.
The most likely reason that the surround processor or receiver is displaying Pro Logic II instead of Dolby Digital or dts is that the signal it is receiving is a stereo (2 channel) signal instead of the 5.1/7.1 Dolby or dts bitstream audio.
This can often be caused by one of two things – either the source device (i.e. the Blu-Ray or Cable box for example) is connected to the processor via only analog connections, or the source’s digital output has not been configured properly. If there is only analog connections to the processor, an digital optical, coaxial or HDMI connection must be added and assigned in order to decode Dolby Digital and dts soundtracks. If there is already a digital connection set up but the unit will not decode Dolby Digital or dts, most likely the digital output of the source player has not been set up to output these formats, or the source material is not encoded in Dolby Digital or dts 5.1. Please refer to your source’s owner’s manual to determine how to configure the digital output to stream Dolby Digital and dts.
The two outlets marked "Delayed" can be switched on and off via the 12V DC trigger input if a mini cable is plugged into the DC trigger input of the product.
Some Rotel amplifiers are designed with 4 sets of binding posts to facilitate bi-wiring your loudspeakers. Both sets of binding posts are connected in parallel so if only one pair of posts is used it does not matter which posts are connected.
Effective October 1, 2015, SiriusXM stopped supporting version 1.0 of their internet streaming protocol. This is the protocol Rotel internet radio tuners utilized for streaming SiriusXM services. Due to the protocol change by SiriusXM, Rotel internet radio tuners will no longer be able to receive and play these stations. We apologize for any inconvenience.
The zone outputs are only available when an analog input is being used. If you currently have only a digital cable connected from a source, a separate stereo analog cable should be connected to the same input to allow the source to be heard in the remote zones.
The PC-USB connection on your Rotel device has two USB settings. The default setting is USB Class 1.0, which supports audio up to 96kHz. In order to support 192kHz audio, your Rotel device must be set to USB Audio Class 2.0 in the setup menu, and if you are using a Windows PC you must also make sure the USB 2.0 drivers are installed. Also, you may need to adjust the sample rate output on your computer as well.
For Windows PC users, you can find the USB 2.0 drivers on the CD included with your Rotel product, or you can download the drivers here.
For models with a front display, to change the USB class to 2.0, press the MENU button repeatedly until you reach the menu PC-USB AUDIO CLASS, then change this setting to 'USB 2.0'.
For the RDD-1580 DAC, follow the steps below to change the USB Audio Class:
If your Rotel device has already been set to USB 2.0 (and the driver has been installed if you are using a Windows PC), the next step would be to check/adjust the sample rate settings on your computer.
An important note about changing the output format - since most of the recordings you will play from iTunes will have been ripped from 44.1kHz CDs, you will want to play them back at their native rate, so the computer needs to be set up to output 44.1kHz. If you leave it set at a higher resolution (96kHz, 192kHz etc), the computer will convert the audio up to this higher resolution which can reduce the sound quality, so it is important to only adjust the sample rate when you intend to play higher resolution audio files.
Software packages like Pure Music and Amarra are available for Mac users to help manage things like automatically playing back music files using their native rate. This eliminates the need to manually make changes if you frequently switch between 44.1kHz and 96kHz or 192kHz recordings.
The PC-USB connection on your Rotel device has two USB settings. The default setting is USB Class 1.0, which supports audio up to 96kHz. In order to support 192kHz audio, your Rotel device must be set to USB Audio Class 2.0 in the setup menu, and if you are using a Windows PC you must also make sure the USB 2.0 drivers are installed. Also, you may need to adjust the sample rate output on your computer as well.
For Windows PC users, you can find the USB 2.0 drivers on the CD included with your Rotel product, or you can download the drivers here.
If your Rotel device has already been set to USB 2.0 (and the driver has been installed if you are using a Windows PC), the next step would be to check/adjust the sample rate settings on your computer.
An important note about changing the output format - since most of the recordings you will play from iTunes will have been ripped from 44.1kHz CDs, you will want to play them back at their native rate, so the computer needs to be set up to output 44.1kHz. If you leave it set at a higher resolution (96kHz, 192kHz etc), the computer will convert the audio up to this higher resolution which can reduce the sound quality, so it is important to only adjust the sample rate when you intend to play higher resolution audio files.
Software packages like Pure Music and Amarra are available for Mac users to help manage things like automatically playing back music files using their native rate. This eliminates the need to manually make changes if you frequently switch between 44.1kHz and 96kHz or 192kHz recordings.
Windows Media Player cannot see all file types. If you rip your CDs to a file/codec tyupe which is not supported buy Windows Media Player - for example FLAC - you will not be able to play it. WMP11 does not support AAC/AAC+ natively; WMP12 added AAC/AAC+ support. WAV (uncompressed) and MP3 are the most universal formats.
Digital audio signals and analog audio signals are kept separate from each other. The multizone circuitry in Rotel surround receivers and preamp/processor is analog. If you have digital connections from your CD player or DVD player to your home theater receiver or preamp/processor, you must also use analog connections (RCA connecting cables) from your source components to the CD or DVD player input on the receiver or preamp/processor.
Do note that in addition to analog sources, the front USB source is also available in the remote zones on RSP-1572 and RSX-1562.
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