Routing Audio and Clock Settings
Learn how to route audio from ADAT or Dante into KLANG:fabrik’s / KLANG:vier’s DSP for 3D in-ear mixing and how to route the mixes on KLANG:fabrik back to ADAT, Dante or the analog outputs. Learn how to monitor the audio clock and optimize stability.
How to tweak settings?
KLANG:app can tweak all settings. The touch display on KLANG:fabrik is for status feedback only (slow response). Enter the Admin mode in KLANG:app (press and hold CONFIG button for 3 seconds and switch to Admin mode) to tweak the settings. Navigate to the CONFIG menu and go to the ROUTING tab.
The audio routing of the KLANG:fabrik / KLANG:vier uses channel blocks. Each block contains 8 consecutive channels of audio. The audio source is shown on the left. The audio sink is shown in the top line. The white square with an arrow in it, shows that a particular source is connected to a sink.
Note: Since KOS 2.0 the routing screen folds for quicker access to the different interfaces. In KOS 1.4.xx the routing had to be adjusted at KLANG:fabrik’s touch display or with a special app. If you are running an older version before KOS 2.1.xx please update to the latest firmware.
KLANG:fabrik – Routing Options
The following schematic shows the routing options for single speed sampling rates (44.1 and 48kHz). For double speed sampling rates it has to be considered that the optical ADAT compatible ports and the Dante port only provide half the number of channels.
Optical 1–4 sources are coming from the optical input connectors of KLANG:fabrik. Each has 8 channels of audio in 44.1 kHz or 48 kHz sampling rate with 24 bits precision. For 88.2 and 96kHz these ports only carry 4 channels each.
Dante sources are in total 64 audio channels. For 88.2 and 96kHz each block only carries 4 channels and the total number is 32 channels for the Dante module.
Firstly, we connect incoming audio streams inside KLANG:fabrik to the audio processor called 3Diem (top line). In earlier KOS <2.2 versions screen used DSP1 that represents input channels 1-8 e.g. as seen in the remote software KLANG:app . DSP2 represents channels 9-16 and so on. In the normal configuration KLANG:fabrik uses 16 input channels (hence, DSP1 and DSP2) only. In the picture below we send the 3D mixes to all available outputsThe users’ 3D audio mixes can then be routed to different sinks. Here we choose users 1-8 to appear on the analog stereo outputs called. But you could imagine any output, like shown in the picture above. Choose freely, where you want to use the 3D headphone mixes. You can also route between the different inputs (ADAT / Dante / MADI) to different audio sinks (ADAT / Dante / MADI and the Analog Stereo outputs), without using the 3D headphone mixes.
With the update of KOS 2.2 and KLANG:app 2.2 a new routing screen was introduced to give a better overview of all routings and provide faster and more precise access to all routing points. For KLANG:fabrik an optional MADI BNC module is avaible. If installed, MADI will appear as FROM:/source and TO:/receiver in default configuration. The second MADI port which acts by default as an output can be configured to act as a second input (128 x 0 @48kHz | 64 x 0 @96kHz). In this configuration two MADI sources will appear on the routing screen and no MADI output will be shown.
I/O channel configurations and the number of input channels and 3D in-ear mixes is shown in the CONFIG/SYSTEM menu.
KLANG:vier – Routing Options
KLANG:vier only supports single speed sampling rates and has a fixed output routing scheme.
Routing in KLANG:vier is simpler than in KLANG:fabrik with less options. The input to the DSP can be chosen from optical and Dante. Also mixed configurations (Matching sample rates and sync required) are possible. The outputs of the DSP‘s 3D in-ear engine User 1–4 are in a fixed connection with Headphone outs 1–4 and the analog line level outputs of the SUB-D break-out. The outputs of all 5 users – 10 channels of audio – are also available on Dante channel 1–10.
Please ensure a correct Clock setting at the bottom of the view. Use one device as clock master and synchronize all other devices to this master. Please note that all digital outputs will be in sync with this master.
No resampling is used and hence all inputs and outputs have the same sampling rate and must be synchronized. To verify your clock settings: Red colored text means no signal, yellow represents signal with a different clock and green shows signals with the same clock. Only inputs with a locked clock are unmuted. Inputs with unlocked clock are muted to avoid loud artifacts.
You can choose between Optical 1 … 4, Dante, and Word Clock (BNC Input) as MASTER. In KLANG:vier only Optical and Dante are available as clock sources. In case you are using Dante it is recommended to use Dante as the Clock master and sync everything to the Dante network. In this case, you can check the clock status in Dante Controller. If you want to sync external devices e.g. via ADAT or BNC to KLANG:fabrik choose Dante as clock master, and specify the sampling rate (44.1 or 48kHz) in Dante controller. This is recommended even if you do not intend to use Dante.
Thanks for using KLANG gear and we hope you find this tutorial helpful. Please let us know, what connection examples you want to read about next — contact@KLANG.com