Videos about big audio systems

Here are some interesting videos related to PA and sound reinforcement systems. Wikipedia defines that a public address system (PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment. It increases the apparent volume (loudness) of a human voice, musical instrument, or other acoustic sound source or recorded sound or music. The term, sound reinforcement system generally means a PA system specifically for live music or performance. A sound reinforcement system for a rock concert or other large event in a stadium may be very complex.

Larsen effect

A brief history of live sound reinforcement

Stage Left Audio – Event Video 11

Dave Rat about his sound engineering for the Red Hot Chili Peppers live tour 2016


Look inside D&B, L’Acoustics and MicroWedge Monitors

DJ Sub and Speaker Placement For Dummies

Cardioid Subwoofers and Nexo Technology Part 1

Time Lapse of a Large PA Audio Sound System Setup for Rock & Roll

#38 – Arena line array system walk-through

How to Set Up a Simple PA System

Sound System Tuning Step-by-Step using TRACT and Smaart

Audio 101- How to do a pro sound check.


  1. Tomi Engdahl says:

    Show Us Your Junk! Ep. 18 – Lee Ranaldo (Sonic Youth) | EarthQuaker Devices

  2. Tomi Engdahl says:

    Neve 33609 Diode Compressor Teardown

    A look inside one of Rupert Neve’s greatest inventions, the diode compressor. The 33609 is the same 2254 compressor from Neve’s 80-series consoles, but with a class AB signal path and in rack mount format.

  3. Tomi Engdahl says:

    What Are Audio Transformers? Why Do They Sound So Good?

    Curious to know more about transformers and how they work?

    Transformer Saturation & Crosstalk

    Transformer Core Oversaturation

    Testing some characteristics of a transformer by over magnetizing its core and reading some voltages and reactive power

  4. Tomi Engdahl says:

    What’s in an API preamp? Vintage API 515 and 512c teardown

    What gives API preamps their signature sound? I take the lid off some racked up 515 modules from an old console, and a more modern 512c to find out.

    What makes Neve preamps so great? Neve clone teardown

    Neve’s vintage mic preamp design is the most celebrated and imitated of all time. But what’s inside and that makes it so damn special? In this video I tear down a GAP Pre-73 Neve preamp clone and walk through the parts and the circuit.

  5. Tomi Engdahl says:

    1176 FET Compressor Teardown pt 1: Circuit and Compression Secrets

    What gives the 1176 compressor design it’s incredible staying power? I take apart a Hairball Audio 1176 Rev D to show what’s under the hood. There are some surprising discoveries along the way, such as:

    - a single $0.50 FET is responsible for most of the sound
    - there *is* a threshold control (if you know where to look)
    - the ratio control is a lie?!

  6. Tomi Engdahl says:

    $50 vs $500 Preamp: What’s inside?

    I tear down a $50 Behringer and a $500 (per channel) Hamptone preamp to see what the real differences are between cheap and boutique mic preamps.

  7. Tomi Engdahl says:

    Compressor Designer GEEKS OUT on DRUM COMPRESSION!

    Compressors are powerful weapons that define the tone, texture, and attitude of our productions. Join Gregory Scott, Kush Audio’s analog and plugin designer, as he twists the knobs on a compressor plugin while telling you exactly what to listen for, making it incredibly easy to hear all the nuances that make compressors the most magical pieces of gear in a producer’s arsenal.

  8. Tomi Engdahl says:

    Is the Alesis 3630 compressor really that bad? Teardown of “the worst compressor ever made”

    The Alesis 3630 may be “the most popular dynamics processor ever made” (according to Alesis), but it’s also been called the worst compressor ever made. Is it really that bad? In this teardown I take one apart to look at the circuitry and parts to find out.

  9. Tomi Engdahl says:

    Don’t Practice BORING Scales, Practice THIS!

    Don’t just practice scales. Practice melodic ideas that you could use in compositions or while improvising. I will demonstrate some ideas of how to do this.

  10. Tomi Engdahl says:

    Is this as good as a real NEVE!? || Heritage Audio – HA-609a

    00:00 – Intro
    00:20 – Unboxing glamour
    00:43 – What is the 609A?
    01:06 – Comparison
    03:38 – Review
    05:41 – Conclusion
    06:14 – Outro

  11. Tomi Engdahl says:

    The LA-2A’s Underrated Little Sibling? Urei LA-4 Opto Compressor teardown

    The LA-4 gets constantly outshone by it’s older siblings, the LA-2A and LA-3A. But today it gets to step into the stoplight with a DIYRE teardown. Check out why I think the LA-4 is an underrated gem that deserves more attention.

    Viewer comments:

    This piece of gear was designed for installation and studio use. Most of the time it’s hard wired into a patchbay or stationary system. So so xlr connectors would have been an extra expense and failure points. You can always add them on a pigtail or rack panel for portable use.

  12. Tomi Engdahl says:

    DIY Recording Equipment EQP5 passive EQ build

    This 500-series equalizer is based off the famed Pultec passive EQ: the EQP-1, which was originally released in 1951 by Pultec (Pulse Techniques). The kit came with all parts, and wasn’t difficult considering the great build guide and tools on the DIYRE website.

    The PCB is thick, and the pads are through-hole (so no need to solder both sides – bottom only!). All parts were grouped in small baggies (actually wish they had used less bags, it ended up being a lot to throw out), so sorting parts was quick and painless. The hardware was equally robust, and once assembled it feels quite solid.

  13. Tomi Engdahl says:

    Andrew Scheps on Analogue vs Digital, How to ‘Hear’ when Mixing

    AudioTechnology caught up with legendary Grammy-winning mix engineer Andy Scheps at Collarts, Melbourne, to talk about all things audio. Andrew willingly shared his wisdom and unique insight on topics ranging from audio education to the age-old analogue vs digital debate.

  14. Tomi Engdahl says:

    Tweeters, Woofers, and Subwoofers | What Is A Speaker Crossover?

    Speaker specs guide

  15. Tomi Engdahl says:

    BIGGEST SOUND SYSTEM in the PHILIPPINES | featuring 108sub of team stroker

    The 2nd X-Mas party of Team Stroker Family at Brgy:Bungsuan Dumarao Capiz. Dec 1 2019 @ bgry Bungsuan Dumarao Capiz
    Powered by Yolanda Speakers and Hurricane Power Amplifier

    The bass is so strong that the space around the speaker is literaly distorted

    The Biggest Sound System Set up in the World,Team Stroker Part two 50 percent of testing

    The battle of distortion. Sound should be judge by the quality of low mid high at high and low volume. Mostly local sound systems are judged by the loudness and strongest power of bass which usually sound distorted. Based on my experienced watching live big musical events & concerts like Tomorrowland, Ultra Music Festival Miami, Coldplay, Bon Jovi, Metallica, Journey, Michael Jackson, GNR etc the sound is very clear and clean at very high and loud volume.

    That is quality sir….. The loudness of vocals is good that is why it is on top…….. The sub is like bomb

  16. Tomi Engdahl says:

    “Sound Waves” Martin Garrix Tremor on DiveTech Pro Audio

    January 2, 2022

  17. Tomi Engdahl says:

    Time Lapse of a Large PA Audio Sound System Setup for Rock & Roll

    Take a look in about 3 minutes at roughly 7 hours of setup time for about 800,000 watts of pro touring PA at the Izod Center for a large rock ‘n roll concert.

    Viewer comments:

    I highly doubt it’s 800,000 watts, maybe 80,000 watts but not 800,000..

    800,000 watts ……for that tiny pa?
    I miss the good ol days where the pa was so big it obstructed part of the stage if you were in the rite place…..I mean come on, 800,000 watts …to power that crappy sounding cheap pa system?
    like iv said, “its all about money, and fuck the fans.”

  18. Tomi Engdahl says:

    Rammstein LIVE Du Hast – Berlin 2022 Day 1

    Rammstein – Europe Stadium Tour (Time Lapse)

  19. Tomi Engdahl says:

    Ed Sheeran “Divide” Tour 2018: Sound System Design and FoH sound for his support Jamie Lawson

    mothergrid had the chance to talk to the sound crew of the Ed Sheeran „Divide“ Tour – Charlie Albin (Sound system engineer), David White (Chewie Tech) and Rob Simpson (FoH sound for support Jamie Lawson).

    With equipment from Meyer Sound, Allen & Heath, DiGiCo, Optcore and many more:

    Equipment list:
    72 x LEO
    42 x 1100LFC
    20 x LINA
    08 x Leopard
    02 x UPA
    56 x Milo
    10 x Galaxy
    04 x Galileo
    01 x SIM3
    02 x MJF 212
    02 x 900 LFC
    04 x Optocore X6R
    04 x Optocore V3R
    01 x Digico SD7 (Ed Sheeran)
    01 x Allen & Heath dLive s3000 (support act Jamie Lawson)

  20. Tomi Engdahl says:

    “Big Mick” Hughes on Mixing Metallica, Low End, and LEO Line Array

    “When you use all the frequencies in the correct proportions, the music sounds full, more powerful, and it does give the impression of being loud.”

    “Big Mick” Hughes
    FOH Engineer, Metallica

    FOH engineer “Big Mick” Hughes, who has mixed more than 1,500 Metallica shows, is a legendary figure in live audio.

    In this Meyer Sound video, he sheds light on the role of a FOH engineer, his love of low end, and his experience with the Meyer Sound LEO line array system and 1100-LFC low-frequency control element.

  21. Tomi Engdahl says:

    Iron Maiden live Pre Show Soundcheck at Banc of California Stadium Los Angeles, CA

    The raven age headliner pre show soundcheck at Banc of California Stadium Los Angeles, CA

  22. Tomi Engdahl says:

    Rammstein – Du Hast / 04.06.2022 Berlin Olympiastadion

    Rammstein – Sonne / 04.06.2022 Berlin Olympiastadion

  23. Tomi Engdahl says:

    JBL 60 year history of building the best speakers for recording studios, movie theaters, live sound, home and automotive use.

    This video takes you though roughly 60 years of JBL history from the first speakers designed to produce sound in the movie theater to becoming the standard for recording studios and live sound. JBL speakers and JBL history evolve into the offerings delivered today such as Project Everest II

  24. Tomi Engdahl says:

    Too MUCH BASS for a TAHOE!?!? Playing Kyle’s BIGGEST Car Audio Subwoofer Sound System Ever!

  25. Tomi Engdahl says:

    Sinai: Inside the UK’s most versatile sound system

    Sinai is one of the UK’s most versatile sound systems. Deep Medi, Tectonic Recordings and Young Echo are some of the labels and collectives to have hosted the roaming Sheffield audio installation, which bridges the gap between traditional dub sound system culture and modern bass music.

    Founded by Huw Williams, Sinai Sound System began life as part of the travelling speaker stack for legendary dub outfit Iration Steppas. Over the years, Sinai has grown in size and reputation, travelled the continent and endured a devastating flood in its hometown.

    In this film, FACT travels to Sheffield to hear the story of Sinai Sound System and follows it to Bristol’s Trinity Centre as it prepares to provide the audio at the fifth birthday party for Batu’s Timedance label.

  26. Tomi Engdahl says:

    Midas M32C Small Band Set Up w/PA System Tune

    This video shows setting up a RCF PA system with a Midas M32C for a small band. The video shows the show file, routing, and basic set up of the PA and the tuning of the room.

    I shot the video for training for new engineers to our band. I figured I would share with the rest of the sound human world.

  27. Tomi Engdahl says:

    The NEW Mac Studio with M1 Ultra. My thoughts.

  28. Tomi Engdahl says:

    Summing Shmumming? Analog vs digital summing test

    In which I finally tackle the issue of analogue summing: is this the secret magic ingredient thats been missing from your ITB mixes? Or, are we being conned by charlatans and snake oil salesmen? Lets find out…

    Viewer comments:

    This kind of ,,myth busting” is just what the audiophile and music industry needs. So many people get emotionally invested into things like their gear, or the way they play, compose, mix… And they can end up leading others away from the path of reason and into marketing potholes, and ignorance ditches. Good work, Dan! Thanks for making those experiments, so that we don’t have to (although I would encourage anyone with enough time and equipment to go for it) ! Cheers!

    It’s impossibly bad in guitar circles, the cognitive bias is unstoppable. Yeah sure that 59 ‘burst is worth $350000 compared to the damn near perfect reproduction from another brand name…sure.

    There’s that old trick, where you do an A/B test between one audio example (like a full song or drum mix), and another which is secretly raised .5 dB. You then ask the subject which they think is better and why. Most often you’ll get a response like “B sounds more open, wider, brighter; objectively better”, just from that tiny lift in level. And what do you know, that’s how audiophiles describe why they spent 4 stacks on a power cable

    00:00 — Intro
    00:24 — Intro: Digital summing is mathematically perfect.
    01:28 — Desirable imperfections: The possibilities
    01:51 — Desirable imperfections: Frequency response
    02:12 — Desirable imperfections: Output non-linearities
    02:40 — Desirable imperfections: Input non-linearities
    03:32 — Desirable imperfections: Consider the Waves plugin.
    04:37 — Comparison pitfalls: Level matching, Pan laws, Gain calibration
    05:35 — Comparison pitfalls: Colouration not from summing
    06:36 — Test: Mystery prototype unit
    07:43 — Test 1: Setup
    08:35 — Test 1: Listening
    08:47 — Test 1: Null test
    09:29 — Test 2: Setup
    09:59 — Test 2: Null test
    10:44 — Reasons to disregard: Specific unit
    11:13 — Reasons to disregard: Bias & mixing process
    13:07 — Reasons to disregard: Not high-end enough
    13:48 — Reasons to disregard: High noise floor
    14:38 — Outro

  29. Tomi Engdahl says:


    Took some notes on this thought should share with everyone:
    - Always cut below 100 hz
    - 100 hz is low end, by boosting it can give deep rumble, radio warm kind of vocals.
    - Boosting 200 hz is warmer point where vocal body lives.
    - 300 hz to 500 hz is where boxiness and Honkiness comes. Its not a good idea to boost it but reduce.
    - 600 hz to 1 khz is the point where body lives, its not a good idea to boost or reduce it
    - 1.5 khz to 2.5 khz is where actually vocal is, by boosting vocals can pop up by reducing vocals can disappear. Boosting too much can boost nasal sound.
    - 2.5 khz to 3.5 khz is a proper nasal sound frequency range if the vocal has nasal sound cut it down.
    - 4 khz is harshness, too much boosting can be harsh too much cutting can make words less understandable.
    - 6 khz is clarity, cutting it down can make vocal warm.
    - 7 to 10 khz is where siblance comes.
    - 10 to 16 khz top end sizzle.
    - 17 khz to 20 khz air and breath.

  30. Tomi Engdahl says:

    That Elusive Console Magic

    In which I pontificate on the possible real sources of the analogue console magic, while sharing some pictures of nice analogue desks. (snapped on my phone, don’t expect pro quality). Hey, I’m allowed a low effort video from time to time, no?

  31. Tomi Engdahl says:

    Why Doesn’t It Null? bx_console Amek 9099

    n which I take almost an hour to review the new Amek 9099 plugin from Plugin Alliance / brainworx, and still don’t cover all the features; I reveal my most compelling reason *not* to use the FabFilter EQ; and I claim to know better than Rupert Neve when it comes to EQ design. Could I be any more wrong?

  32. Tomi Engdahl says:

    98% of faults are on the system techs, bad building grounds , poor acoustics, band too loud/quiet poor mic technique ect are what YOU ARE PAID TO TAKE CARE OF, if you cant or wont best find another hobby

  33. Tomi Engdahl says:



    In this video I break down Lakewood Church Live Stream Setup / (Full Broacast Process) from a production TECH TOUR / visit I did back in summer 2021 down to Houston Texas with their production staff members.
    I was able to visit the whole production area thanks to Lakewood church staff.
    I go through audio capture and mixing process, cameras, switching, graphics and visual elements as well as some extra visit to their server and editing rooms .
    I hope you enjoy the video

    00:00 Intro
    02:16 Cameras
    05:20 Camera Control Units Room
    06:54 Main Switching Room
    10:25 Audio Capture & Mixing
    14:43 Lighting
    16:14 Graphics & Visual Elements
    17:23 Editing Rooms and Server Rooms, EXTRA

  34. Tomi Engdahl says:

    Line arrays explained in under five minutes, featuring some very unique NEXO technologies. Full video link in first comment.

    Thanks to PA of the Day for their support!

  35. Tomi Engdahl says:

    Phantom Power Mic 6 Miles Cat5e Cable??

    00:00 Intro and setup
    02:14 100 meter (3 28 feet) test Shure SM58, AKG C414 and Neumann U89
    04:24 800 meter (1/2 mile) test Shure SM58, AKG C414 and Neumann U89
    06:57 1600 meter (1 mile) test Shure SM58, AKG C414 and Neumann U89
    09:22 2400 meter (1.5 mile) test Shure SM58, AKG C414 and Neumann U89
    11:46 4800 meter (3 mile) test Shure SM58, AKG C414 and Neumann U89
    14:21 6400 meter (6 mile) test Shure SM58 and Neumann U89 ( I tested the C414 as well and it worked without issues, I skipped it as it performed the same as the U89)
    16:21 Outro

  36. Tomi Engdahl says:

    How to Properly Coil Large Gauge Cable – Method #1 of 2

    In this segment Roger Lattin, an ETCP Trainer and Certified Stage Electrician, demonstrates the proper method for coiling or ‘wrapping’ a feeder cable. Using 4/0 Type SC cable as an example, step-by-step instructions detail proper handling methods utilizing the ‘right-hand lay’ of the wire to prolong the life of an extension. Tips and techniques like pre-wrap preparation, wrap size monitoring and cable condition examination ease the work load while increasing efficiency.


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