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Revision as of 14:30, 12 December 2022
Contents
DSM Surround Sound without DSP module
This page describes how to configure a surround sound system without using a surround decoder module in a DSM.
Non-encoded (PCM) surround audio playback is supported by the following DSM players
- Any DSM with HDMI and/or HDMI eARC inputs and Exakt outputs
- Selekt DSM (Classic and Edition) with 2 or more 2-channel modules
Summary
The most reliable configuration is as follows:
- access video streaming services (Netflix, Amazon Prime, BBC iPlayer, etc.) through either Apple TV or Sony Playstation connected to a DSM HDMI input. Switch the DSM to the HDMI[1..4] source for these
- access broadcast TV channels via eARC. Switch the DSM to the eARC source for these.
Many other configurations are possible. Some may be more appropriate for any given combination of TV, disc player and streaming device. More detailed notes on these are included below. Note that these configurations will need to be tested by the retailer or prospective purchaser case by case.
Definitions
- Source: Any device which can supplies audio to the DSM HDMI input
- Set-top box such as SkyQ, Apple TV etc.
- Streaming devices such as Amazon Firestick, Chromecast, Roku etc.
- Blu-ray players, Games consoles etc.
- TV: Any video output device
- Television
- Projector
Configurations
(1) Source -> DSM HDMI input : DSM HDMI out -> TV
[ insert a diagram here ]
The source device must supply PCM surround audio to the DSM over HDMI
- For native PCM media this needs to be output without change
- For encoded media (Dolby/DTS) this needs to be decoded to PCM surround audio and then output to the DSM over HDMI
(2) TV HDMI eARC out -> DSM HDMI out
[ insert a diagram here ]
The TV must supply PCM surround audio to the DSM over HDMI eARC
- For native PCM media this needs to be output over TV HDMI eARC without change
- For encoded media (Dolby/DTS) this needs to be decoded to PCM surround audio by the TV and then output over TV HDMI eARC over HDMI
(3) Source -> TV HDMI input : TV HDMI eARC out -> DSM HDMI
[ insert a diagram here ]
The TV must supply PCM surround audio to the DSM over HDMI eARC
- The same requirements as scenario (2) above
- Additionally
- TV must pass through native PCM to HDMI eARC
- Decode of encoded media must be performed on either TV or source and passed through to TV HDMI eARC out
NOTES
- Due to the vast array of available source and TV devices it is impossible for Linn to specify whether any given setup will function as required. Even within devices from any given manufacturer there are different hardware and software variants which can affect this functionality.
- Behaviour can differ between different streaming services within the same source device
- Playback of PCM surround audio using SPDIF or TOSLINK inputs is NOT supported
Tested Devices
- Table shows DSM audio output channels when no DSP module fitted
- All devices and services tested are UK specification
| Device | Media Source | ||||||||
| Sat / Aerial | Bluray | Game | Prime Video | BBC iPlayer | Netflix | Plex 7.1 Test Track | External HDMI source | ||
| Amazon Firestick 4K | 2.0 | 2.0 | 2.0 | 2.0 | |||||
| Apple TV | 5.1 | 2.0 | 5.1 | 5.1 | |||||
| Sony PS4/PS5 | 7.1 | 7.1 | 5.1 | 2.0 | 5.1 | 5.1 | |||
| Nvidia Shield | 5.1 | 5.1 | 5.1 | ||||||
| Oppo Disc Player | 7.1 | ||||||||
| Sky Q | 2.0 | 2.0 | 2.0 | 2.0 | |||||
| LG TV (eARC) | 7.1 | ||||||||
| Panasonic TV (eARC) | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | ||||
| Sony TV (eARC) | 2.0 | 2.0 | 2.0 | 7.1 |
