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Duplex buses vs. input/output buses


my workstation with a class compliant interface has 10 output and 4 input streams. The master bus uses the first two input and two output streams. I created four stereo input buses to connect all 10 streams. Now I am wondering about input streams three and four. Should I create two duplex buses instead and three stereo input buses? What is the difference using only input and output buses instead of using duplex buses?

Any help is appreciated, "4.1. Routing–Connections, Ports, Tracks and Buses" in the manual didn't help me out.


rncbc's picture

it all depends on how and what you have setup to record (input buses) and playback (output buses);

duplex buses are just a convenience, nothing more than when you have the same channel count on both end, otherwise you should make it all match the channel count for each of your physical sources (mics, guitars, synths, turntables, decks, etc.) or software ones like any JACK client app. the same applies to outputs (speakers, processors, etc.)

the Master bus being duplex and stereo (2 channels) is just a "factory" default convenience; you don't really need to have all your available physical inputs and outputs grouped in some buses; you only need to use the sets that are meaningful to the session that you're working at a given moment.

there are too many ways, reasons and options to do this and that, for example, if you want to record your voice from a mono source (eg. a microphone) then you ought to create a mono (1 channel) input bus and only: there's no reason whatsoever for it being duplex or stereo there.


I see, thanks for the explanations. The workstation offers mono and stereo settings for the output streams to separate the different sounds, I will create suitable Qtractor templates.

Thanks again


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