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Logic Pro X Tutorial

Logic Pro X Signal Flow Explained

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35 Videos
Length: 3hr 41min 9sec
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Before Logic

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    Tutorial 1

    From Source to Output


    An overview of the steps and stages audio and MIDI signals pass through that will be looked at throughout this series.

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    Tutorial 2

    Sound Waves and Microphones


    Discover how vibrations in the air movement are measured and how microphones are used to convert these changes into corresponding electrical voltages.

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    Tutorial 3



    Learn about XLR and TRS cables, and the differences between balanced and unbalanced signal flow.

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    Tutorial 4

    Pre Amps


    Explore the functions and connections of the pre amplification stage of signal flow, which is used to boost signal level.

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    Tutorial 5

    The Audio Interface


    This is the last stop in the signal flow's journey in the physical world. The audio interface converts it into the digital information the computer needs in order to work with it within Logic Pro X.

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    Tutorial 6

    Audio MIDI Setup


    Use this OS level utility to ensure all the ins and outs on your audio interface are recognized properly by the Mac OS. Most audio interface's also ship with a software control panel to configure core audio OS level settings.

In Logic

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    Tutorial 7

    Buffers and Latency


    Learn about input and output latency and how the buffer settings affect the delay when monitoring audio through Logic.

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    Tutorial 8

    Audio Input


    Discover three ways of routing audio signal flow directly into Logic, via the Live Input object in the Environment Window, the Auxiliary channel strip's input field, or directly on an Audio Channel Strip.

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    Tutorial 9

    Audio and Output Channel Strips


    Follow the signal flow from top to bottom, and from left to right throughout Logic's mixer.

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    Tutorial 10

    Software Instrument Channel Strips


    Discover the similarities and the differences between the signal flow in audio channel strips and instrument channels strips.

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    Tutorial 11

    Output Routing and the Master Fader


    Learn how to reassign the stereo output routing in Logic's preferences, how to use the Dim button on the Master fader, and how to toggle the output level between two values by key command.

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    Tutorial 12

    Panning and Balance


    Explore the pan/balance knob, and see how the signal being played back reacts when placed at various positions in the stereo image on both mono and stereo tracks, and how the level of the signal is affected by Logic's various pan laws.

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    Tutorial 13

    The Direction Mixer


    See how the Direction Mixer plug-in is used to control the width of a stereo signal, and to pan the center of the stereo image rather than merely adjusting the relative levels like the channel strip's balance knob does.

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    Tutorial 14

    Sends and Busses


    Discover how busses are used as virtual pipelines to route portions of a channel strip's signal to alternate destinations for effects processing, how sends and Auxiliary channel strips are used to send and receive bus signals, and how Logic's Bus objects, an artifact of the distant past, were once used.

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    Tutorial 15

    Pre and Post Fader Sends


    Discover some of the unique signal flow routing possibilities available when assigning sends in post fader, pre fader, and post pan modes.

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    Tutorial 16

    Auxiliary Channel Strips


    See how auxiliary channel strips are used as subgroups, multi output instrument routing, and in track stacks.


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    Tutorial 17

    Setting the Record Delay


    Watch as the distance between a percussive signal re-recorded through the audio interface is measured with the original, in order to determine the necessary recording delay offset.

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    Tutorial 18

    Record Delay Another Way


    See how to bounce the re-recorded signal with the original into a stereo file, and then measure the offset between the two sides in the Audio File Editor.

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    Tutorial 19

    Monitoring the Signal


    Learn about the various software monitoring settings and functions that allow signal to be monitored through Logic.

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    Tutorial 20

    Recording with Effects


    Explore four different ways of recording with software effects processing inserted at various access points in the signal flow.

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    Tutorial 21

    Direct Monitoring


    Learn how direct monitoring bypasses recording latency by routing the inputs directly to the outputs of your audio interface, and how to combine this with the monitoring of software effects processing at the same time.

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    Tutorial 22



    Explore the characteristics of input latency, output latency, monitoring latency, and internal latency; and how Logic's plug-in delay compensation and low latency mode features are best used.

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    Tutorial 23

    Punch Recording


    See some of the ways signal flow is monitored and captured during quick punch and auto punch recording.

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    Tutorial 24

    Creating a Headphone Mix


    Learn how to set up a parallel audio stream routed to the headphone outputs on a multi out audio interface.

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    Tutorial 25

    IO Labels


    Learn how to customize the display names of your audio interface's physical inputs and outputs, as well as the virtual bus pathways within Logic.

MIDI Signal Flow

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    Tutorial 26

    MIDI Signal Flow Basics


    See how MIDI input flows from the Audio MIDI Setup app, to Logic's Physical Input Environment Object, to the Sequencer Input, to the selected track in the Track's Area, to the connected Channel Strip, through the instantiated MIDI FX and software instrument. The generated audio triggered by the MIDI messages then flows through audio processing plug-ins, and bus sends; and finally to the outputs of Logic's internal audio stream.

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    Tutorial 27

    Routing To External MIDI Devices


    Discover how to route incoming MIDI messages back through the output ports on your connected devices in order to trigger external sound sources.

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    Tutorial 28

    Customizing Your MIDI Setup


    Learn how to use Audio MIDI Setup and Logic's Environment to create representations of your connected devices with the proper routing assignments set up in advance, so that they are always preconfigured and available.

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    Tutorial 29

    External Instrument Plug-In


    See how this plug-in is used to both route MIDi to an external destination, and bring it's audio in via your audio interface. Alternatively, learn how to use Auxiliary and Input channel strips to route the audio from external devices into Logic's signal flow.

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    Tutorial 30

    The Environment


    Learn how to cable Environment objects into the MIDI signal pathway so that their generated events occur either after or before MIDI input reaches Logic's sequencer.

Advanced Signal Flow

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    Tutorial 31

    IAC Signal Flow


    Learn how the IAC bus is used to route MIDI signal flow to stand alone software instruments outside of Logic.

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    Tutorial 32



    See how audio is routed between applications using this free third party software, and learn how to create an Aggregate Device in the Audio MIDI Setup utility as a means of combining the signal flow from multiple audio streams into a single virtual core audio device.

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    Tutorial 33

    Multi Track Recording


    Explore some of the different ways to approach recording multiple audio and MIDI streams separately and together.

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    Tutorial 34

    Merging the Internal Signal Flow


    Explore a few different scenarios, other than the traditional bounce to disc function, that allow for the merging of multiple audio streams within Logic.

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    Tutorial 35

    Sidechain Processing


    Explore some scenarios where the signal flow of one channel strip is routed to the input of a plug-in on another channel strip, functioning as a control source that acts upon the sound of the destination track. And discover some creative uses for Environment Bus objects.

If you're new to Logic Pro X, or just want to better understand the art of routing and signal flow, this is the series to watch. Logic Superman Eli Krantzberg breaks down everything you need to know about both basic and advanced routing and signal flow in Logic Pro X, making your workflow more efficient and inspired.

Eli starts with the important foundations such as what audio and MIDI are, how Sound Waves and Microphones work, Cable and Pre Amp overviews, and audio and MIDI interface basics and setup. Eli then opens Logic Pro X and starts your guided journey with tutorials on Buffers and Latency, Audio Input, Audio and Software Instrument Output Channel Strips, Panning and Balance, the Direction Mixer Plug-in, using Sends & Busses, Auxiliary Channel Strips and more!

Now Eli focuses on Recording and gives you tutorials on Setting Record Delay, Monitoring the Signal, Recording with Effects, Direct Monitoring, Punch Recording, creating Headphone Mixes and I/O Labels. MIDI Signal Flow in Logic Pro X is now examined, and Eli starts at the beginning with MIDI Signal Flow Basics, Routing to External MIDI Devices, Customizing your MIDI Setup, the External Instrument Plug-In, and routing inside the illusive Environment.

Advanced Signal Flow is now demonstrated, and Eli explains everything you need to know about the IAC Bus, using Soundflower, Multi-Track Recording, Merging Internal Signal Flow, Side-Chain Processing and much, much more. If you're looking for the ultimate guide to signal flow and routing in Logic Pro X, look no further... Get "Logic Pro X Signal Flow Explained" today!

Submitted 2 weeks ago

Very helpful

All of Eli's videos are excellent.

I am a: Semi-Pro, Producer, Logic Pro

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Submitted 3 weeks ago

thank you !

very straight forward/ easy to follow

Bad Auto
Submitted 2 months ago

Fantastic Overview

Extremely helpful to learn and understand how things work or supposed to work.

I am a: Musician

Ease of Use
Quality of Videos
Value of Training
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james c
Submitted 2 months ago

Very good. This guy is a great teacher

This guy is a great teacher. He really showed me some of the intricacies of Logic. This teacher wastes no time, he is very knowledgeable and prepared.

I am a: Musician

Ease of Use
Quality of Videos
Value of Training
Access to Videos

Submitted 6 months ago

Great Explanations and Insights

I struggled with Logic for some time and this video training showed me all relevant settings and signal flow elements to finally understand what is going on. Highly recommended.

1. When did you start dabbling in music?

I started playing drums in high school at age fourteen. Like most kids my age around then, I was into progressive rock. Genesis, Emerson Lake and Palmer, and Yes. They rocked my world. A few short years later though, my musical life changed. While studying music in college I discovered Charlie Parker, Milt Jackson, Sonny Stitt, and John Coltrane. Milt Jackson spoke to me in such a profound way that it left me no choice but to take up vibraphone.

These great players, along with  drummers like Philly Joe Jones, Max Roach, Art Blakey, and Elvin Jones changed not only the way I thought about drumming, but also music - and by extension, life - as a whole. I realized life was meant to be a creative endeavor. The idea of improvising based on a loose set of guidelines and rules permeated into my psyche even when I wasn't holding a pair of drumsticks or mallets. But if I am going to be perfectly truthful, I have to hold Henry Miller and Woody Allen equally responsible for shaping the way I view and experience the world around me. 

2. What training have you had?

I am currently an Apple certified Logic Pro. Young and cocky, and armed with only a partial University degree, I dropped out of school and  began playing steady commercial hotel engagements and jazz gigs when I could. This went on for many years until I decided it was time to complete my degree - which I ultimately did with a major in Political Science and a minor in music. 

It was at this point that I formed my current band Nightshift. We are going in to our twenty third year now - playing commercial one nighters like weddings, corporate events, etc. Don't turn your nose up at it though - it has allowed me a wonderful quality of life. It gave me the freedom to go back to school and complete a post graduate degree in Communications Studies - all the while supporting myself by playing weddings.

3. When did you get into recording?

It was in this graduate program - in the early nineties - that I found myself drawn to the fledgling emerging universe of hard disc recording and midi sequencing. Based on nothing more than the recommendation of one of my band mates who had an old Atari, I jumped in head first and bought a Mac LC ll, along with a version 1.1 of what was then Notator Logic. I had no idea what I was getting myself into. But, in hindsight, it was a decision of epic importance in my life - shaping my future as much as the music of Milt Jackson and Charlie Parker did fifteen years prior. 

I opened up my own commercial home studio in 1998 and began doing a variety of projects, working on radio jingles, artist CD projects, and whatever came my way. A couple of years later a colleague called me up - desperate. He was working at a post production house and one of the editors had just quit. They were doing audio post for a weekly TV series and needed a Pro Tools editor - and fast! And so, once again, I jumped in head first into what would ultimately open up my world even more - the world of Pro Tools. 

4. People you have worked with/for?

Focusing on Logic, I built up a small but loyal client base and my phone kept ringing for Logic tech support and instruction. Film composers and studio owners all over the city were calling me. Even the music stores were giving out my phone number at this point! This kind of stuff becomes a self fulfilling prophecy. The more of it you do, the more calls you get to keep doing it. At least that's the way it should be!

As my Logic chops kept growing, I was hired by an old buddy of mine, Len Sasso, who was then an associate editor at Electronic Musician magazine, and began writing some columns for them. I had a blast doing them - and really learned to focus and express my thoughts in a concise and clear manner. This lead to a collaboration with LA based composer Terry Michael Huud on the 2006 film called Civic Duty - which was certainly one of the highlights of my professional life as a composer. 

5. Why are you so good at training people?

I wake up every day excited to boot up, and create. Whether it's instructional videos, creating music, working with a studio client, performing with my band, or teaching at the schools - my days are filled with what I love doing. Enriched by the stimulation and creative freedom this modern music making software brings to my life. I bring that excitement and passion to each and every training product I create. My years of experience both using and teaching these programs has taught me the best way to make the user comfortable with these complex programs.

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Logic Pro X Signal Flow Explained is rated 4.9 out of 5 by 5.
Rated 5.0 out of 5 by from Very helpful All of Eli's videos are excellent.
Date published: 2017-03-15
Rated 5.0 out of 5 by from thank you ! very straight forward/ easy to follow
Date published: 2017-03-10
Rated 5.0 out of 5 by from Fantastic Overview Extremely helpful to learn and understand how things work or supposed to work.
Date published: 2017-02-08
Rated 5.0 out of 5 by from Very good. This guy is a great teacher This guy is a great teacher. He really showed me some of the intricacies of Logic. This teacher wastes no time, he is very knowledgeable and prepared.
Date published: 2017-01-22
Rated 5.0 out of 5 by from Great Explanations and Insights I struggled with Logic for some time and this video training showed me all relevant settings and signal flow elements to finally understand what is going on. Highly recommended.
Date published: 2016-10-03