Category Archives: Live Audio Tactics

Tips, tricks, and strategies for concert sound in small venues.

Not Everybody, Not All The Time

Care about everything you can, then be okay with everything else.

Please Remember:

The opinions expressed are mine only. These opinions do not necessarily reflect anybody else’s opinions. I do not own, operate, manage, or represent any band, venue, or company that I talk about, unless explicitly noted.

Want to use this image for something else? Great! Click it for the link to a high-res or resolution-independent version.

A letter to myself and others:

You can’t please everybody all the time.

You can try, of course, and you should. Show production is a service industry that’s always been a service industry. It always will be. Getting the maximum number of people to be delighted with the show IS your job.

But 100% satisfaction for everybody is very difficult to get to. Somebody will always manage to sit in the seat where the PA coverage isn’t quite right. Somebody will inevitably wonder why you didn’t make Band A sound like Band B, even though Band A has made arrangement choices such that they CAN’T sound like Band B. You will never have enough subwoofer for “that one guy.” Someone is going to lecture you on how their preferred snare-drum sound is THE key to a rock mix.

There is nothing so good that someone, somewhere will not hate it. So says Pohl’s law, if the Intertubes are to be believed.

You’re going to have to make choices about what to prioritize. That’s part of sitting in any of the chairs involved in show control. By necessity, you will be making choices (many of them, at high speed) that have real – though usually ephemeral and ultimately benign – effects on the lives of a sizable number of people. You must therefore cultivate an assuredness, an appropriate level of confidence that you are doing the right thing. Beyond having a strong appreciation of personal and collective aesthetics, this confidence will be greatly bolstered by understanding the physics involved in this job. If you know what’s possible and what’s not, you will be less rattled when someone accuses you of not having done the right thing…when their right thing wasn’t a feasible thing anyway.

It’s right to take all concerns seriously, but not all concerns can be treated with the same level of seriousness. Start by making as many musicians as happy as you can. That’s your baseline. If you get the baseline done, and somebody else isn’t happy, consider if that person is writing the checks for the event. If so, working out a compromise will probably be in order. An extreme case might require that you just do as you’re told. After you get that squared away, you can start being concerned about other considerations brought to your attention. If you can take care of them without changing the happiness level of the check-writer or the players, go ahead.

If not, be polite, but don’t worry too much. Even big-dollar gigs can’t deploy enough gear to fix everything.

Do your best, have fun, and try to get as many other people to have at least as much fun as you’re having. Do maintain care for the outliers, but don’t agonize. It won’t get you anything, anyway.


Mentalism

“Subjective” problems are still problems that have to be taken seriously.

Please Remember:

The opinions expressed are mine only. These opinions do not necessarily reflect anybody else’s opinions. I do not own, operate, manage, or represent any band, venue, or company that I talk about, unless explicitly noted.

Want to use this image for something else? Great! Click it for the link to a high-res or resolution-independent version.

I’m not a doctor, nor do I play one on TV. However, I have known doctors – really good ones – and though they’ve never said this explicitly, I think they would be of the opinion that a problem in the mind IS a real problem. That is, if a patient is experiencing distress that is caused by the brain, then they are really experiencing distress. The key isn’t to tell the complainant that what’s happening to them is fake, because it clearly is not fake. Rather, if the problem truly is in the mind then the solution must be applied at the problem.

Which is in the mind.

This might not seem like something to do with audio, but you have heard that part of an audio-human’s job is psychology, right? It’s said jokingly, but it shouldn’t be. It’s true. Musical craftspersons of all types have been known to run into problems at a show that really do exist…just inside their own head.

Something just doesn’t seem right. A guitar tone feels “off.” The vocals aren’t sparking with the same magic. I liked that reverb yesterday, and now it’s awful. This DI box doesn’t work right with my instrument.

Especially for us science-oriented types, our response to this takes work. Because we’ve spent so long trying to cut through the vast piles of horse-doodie that pervade the industry, we get dismissive. “Nothing’s different, man. It’s just your imagination. Ignore it.” But they CAN’T ignore it. They’re experiencing it, or they’ve convinced themselves that they are, and that is plenty good enough for them.

This is why an understanding that audio is a service business is so important. This is why an attitude of cooperation ought to be cultivated. Some perceptual issues can’t be worked out by applying a tech-based change, but they can at least be alleviated. The salve that can be applied is a willingness to treat the mental malady as a true conundrum requiring attention. They want you to turn the knobs? Turn ’em! They want you to swap the cables? Swap ’em! They want you to drive the system into feedback (with an audience present) so that they can go after the ringing frequencies with their own EQ, and then drop the gain back to where you had it? Go for it! (This has actually happened to me, by the way.)

In the moment, taking a desired action matters greatly – even if that action is not likely to physically affect much of anything – because what you’re really applying the fix to is a person and not the PA. After all the dust has settled, THEN you can talk about whether or not the distress was objective or subjective. Rationality is a part of handling whatever bugbear there was, but rationality only works when people are calm. The important thing “in the now” is being on the same team…and proving it.

Refrain from lecturing in a crisis; The person experiencing the crisis can’t process what you’re saying.

I think I’ve proven many times on this site that I value an analytical approach. I put very little stock in “audio theater,” which is using techniques and buying gear that make you THINK a problem is getting fixed, rather than actually fixing something. I don’t advocate doing something damaging or insane just to make somebody else feel better; Sound people need to know what’s a flat-out bad idea. Diplomacy, though, is essential. When the show must go on, there’s little use in winning a technical argument. What’s needed is to get everybody to a place where they’re as happy as is physically and mentally possible.


Console Questions

A few simple queries can get you going on just about any console.

Please Remember:

The opinions expressed are mine only. These opinions do not necessarily reflect anybody else’s opinions. I do not own, operate, manage, or represent any band, venue, or company that I talk about, unless explicitly noted.

Want to use this image for something else? Great! Click it for the link to a high-res or resolution-independent version.

Back when I was in school, we were introduced to “The Four Console Questions.” The idea behind the questions was that, if you walked up to a strange mixer, you could get answers to the questions and be able to get work done. Mixing desks come in many varieties, but there aren’t very many truly different ways to build them that make sense. In any case, all the basic concepts have to essentially stay the same. If a console can’t take some number “a” of audio inputs, and route those inputs to some number “o” of outputs, you don’t have a mixing console anyway.

With the growing commonality of digital mix systems, I feel that the essential “console questions” need some expansion and tweaking. As such, here’s my take on the material that was presented to me over a decade and a half (GEEZE!) ago.

1. Do I Know What I Want To Do?

You might say that this isn’t a console question at all, but in truth, it’s THE most important one. If you don’t know what you want to do with the console, then knowing a bunch of information about the console’s operation won’t help you one iota. The unfortunate reality is that many people try to engage in this whole exercise backwards; They don’t know what they want to accomplish, but they figure that learning the mixer’s whys and wherefores will help them figure it out.

Certainly, learning about a new feature that you haven’t had access to previously can lead you to new techniques. However, at a bedrock level, you have to have some preconceived notion of what you want to accomplish with the tool. Do you want to get a vocal into the FOH PA? Do you want to get three electric guitars, a kazoo, and a capybara playing Tibetan singing-bowls into 12 different monitor mixes?

You have to know your application.

2. How Do I Correctly Clock The Console?

For an analog console, the answer to this is always: “No clock is required.”

For a digital rig, though, it’s very important. I just recently befuddled myself for an agonizing minute with why a digital console wasn’t showing any input. Whoops! It was because I had set it to receive external clock from a master console a few weeks before, and hadn’t returned it to internal clocking now that it was on its own.

You need to know how to indicate to the console which clock source and sample rate is appropriate for the current situation.

3. How Do I Choose What Inputs Are Available To The Channels?

This is particularly important with consoles that support both on-board input and remote stageboxes. You will very likely have to pick and choose which of those options is available to an individual channel or group of channels. What you need to discover is how those selections are accomplished.

4. How Do I Connect A Particular Input To A Particular Channel?

You might think this was covered in the previous question, but it wasn’t. Your global input options aren’t the end of the story. Many consoles will let you do per-channel “soft-patching,” which is the connection of a certain available signal to a certain channel without having to change a physical connection. Whether on a remote stagebox or directly at the desk, input 1 may NOT necessarily be appearing on channel 1. You have to find out how those connections are chosen.

5. How Do I Insert Channel Processing?

In some situations, this means a physical insert connection that may be automatically enabled…or not. In other cases, this means the enabling and disabling of per-channel dynamics and/ or EQ, and maybe even other DSP processing available onboard in some way. You will need to know how that takes place, and with all the possible variations that might have to do with your particular application, it is CRITICAL that you know what you want to do.

6. How Do I Route A Channel To An Auxiliary, Mix Bus, Or The Main Bus?

Sometimes, this is dead-simple and “locked in.” You might have four auxiliaries and four submix buses implemented in hardware, such that they can only be auxiliary or mix buses, with the same knobs always pushing the same aux and a routing matrix with pan-based bus selection. On the other hand, you might have a pool of buses that can behave in various ways depending on global configuration, per-channel configuration, or both.

So, you’ll need to figure out what you’ve got, and how to connect a given channel to a given bus so that you get the results you want.

7. How Do I Insert Bus Processing?

This might be just like question 5, or wildly different. You will need to sort out which reality is currently in play.

8. How Do I Connect A Given Signal To A Physical Output?

Just because you have a signal running to a bus, there’s no guarantee that the bus is actually going to transfer signal to any other piece of equipment. Especially in the digital world, there may be another layer of patching to assign signals to either digital or analog outputs. Bus 1 might be on output 7, because six matrices might be connected to the first six outputs. Maybe output 16 is a pre-fader direct out from channel 4.

You’ll have to figure out where all that gets specified.


Obviously, there’s more to being a whiz at any particular console than eight basic questions. However, if you can get a given signal into the desk, through some processing, combined with other signals you want to combine, and then off to the next destination, you can at least make some real noise in the room.


EQ Propagation

The question of where to EQ is, of course, tied inextricably to what to EQ.

Please Remember:

The opinions expressed are mine only. These opinions do not necessarily reflect anybody else’s opinions. I do not own, operate, manage, or represent any band, venue, or company that I talk about, unless explicitly noted.

Want to use this image for something else? Great! Click it for the link to a high-res or resolution-independent version.

On occasion, I get the opportunity to guest-lecture to live-sound students. When things go the way I want them to, the students get a chance to experience the dialing up of monitor world (or part of it). One of the inevitable and important questions that arises is, “Why did you reach for the channel EQ when you were solving that one problem, but then use the EQ across the bus for this other problem?”

I’ve been able to give good answers to those questions, but I’ve also wanted to offer better explanations. I think I’ve finally hit upon an elegant way to describe my decision making process in regards to which EQ I use to solve different problems. It turns out that everything comes down to the primary “propagation direction” that I want for a given EQ change:

Effectively speaking, equalization on an input propagates downstream to all outputs. Equalization on an output effectively propagates upstream to all inputs.


What I’ve just said is, admittedly, rather abstract. That being so, let’s take a look at it concretely.

Let’s say we’re in the process of dialing up monitor world. It’s one of those all-too-rare occasions where we get the chance to measure the output of our wedges and apply an appropriate tuning. That equalization is applied across the appropriate bus. What we’re trying to do is equalize the box itself, so we can get acoustical output that follows a “reference curve.” (I advocate for a flat reference curve, myself.)

It might seem counter-intuitive, but if we’re going to tune the wedge electronically, what we actually have to do is transform all of the INPUTS to the box. Changing the loudspeaker itself to get our preferred reference curve would be ideal, but also very difficult. So, we use an EQ across a system output to change all the signals traveling to the wedge, counteracting the filtering that the drivers and enclosure impose on whatever makes it to them. If the monitor is making everything too crisp (for example), the “output” EQ lets us effectively dial high-frequency information out of every input traveling to the wedge.

Now, we put the signal from a microphone into one of our wedges. It starts off sounding generally good, although the channel in question is a vocal and we can tell there’s too much energy in the deep, low-frequency area. To fix the problem, we apply equalization to the microphone’s channel – the input. We want the exact change we’ve made to apply to every monitor that the channel might be sent to, and EQ across an input effectively transforms all the outputs that signal might arrive at.

There’s certainly nothing to stop us from going to each output EQ and pulling down the LF, but:

1) If we have a lot of mixes to work with, that’s pretty tedious, even with copy and paste, and…

2) We’ve now pushed away from our desired reference curve for the wedges, potentially robbing desired low-end information from inputs that would benefit from it. A ton of bottom isn’t necessary for vocals on deck, but what if somebody wants bass guitar? Or kick?

It makes much more sense to make the change at the channel if we can.

This also applies to the mud and midrange feedback weirdness that tends to pile up as one channel gets routed to multiple monitors. The problems aren’t necessarily the result of individual wedges being tuned badly. Rather, they are the result of multiple tunings interacting in a way that’s “wrong” for one particular mic at one particular location. What we need, then, is to EQ our input. The change then propagates to all the outputs, creating an overall solution with relative ease (and, again, we haven’t carved up each individual monitor’s curve into something that sounds weird in the process).

The same idea applies to FOH. If the whole mix seems “out of whack,” then a change to the main EQ effectively tweaks all the inputs to fix the offending frequency range.

So, when it’s time to grab an EQ, think about which way you want your changes to flow. Changes to inputs flow to all the connected outputs. Changes to outputs flow to all connected inputs.


Livestreaming Is The New Taping – Here Are Some Helpful Hints For The Audio

An article for Schwilly Family Musicians.

Please Remember:

The opinions expressed are mine only. These opinions do not necessarily reflect anybody else’s opinions. I do not own, operate, manage, or represent any band, venue, or company that I talk about, unless explicitly noted.

Want to use this image for something else? Great! Click it for the link to a high-res or resolution-independent version.

“The thing with taping or livestreaming is that the physics and logistics have not really changed. Sure, the delivery endpoints are different, especially with livestreaming being a whole bunch of intangible data being fired over the Internet, but how you get usable material is still the same. As such, here are some hints from the production-staff side for maximum effectiveness, at least as far as the sound is concerned…”


The rest is here. You can read it for free!


Hitting The Far Seats

A few solutions to the “even coverage” problem, as it relates to distance.

Please Remember:

The opinions expressed are mine only. These opinions do not necessarily reflect anybody else’s opinions. I do not own, operate, manage, or represent any band, venue, or company that I talk about, unless explicitly noted.

Want to use this image for something else? Great! Click it for the link to a high-res or resolution-independent version.

This article, like the one before it, isn’t really “small venue” in nature. However, I think it’s good to spend time on audio concepts which small-venue folk might still run across. I’m certainly not “big-time,” but I still do the occasional show that involves more people and space. I (like you) really don’t need to get engaged with a detailed discussion regarding an enormous system that I probably won’t ever get my hands on, but the fundamentals of covering the people sitting in the back are still valuable tools.

This article is also very much a follow up to the piece linked above. Via that lens, you can view it as a discussion of what the viable options are for solving the difficulties I ran into.

So…

The way that you get “throw” to the farthest audience members is dependent upon the overall PA deployment strategy you’re using. Deployment strategies are dependent upon the gear in question being appropriate for that strategy, of course; You can’t choose to deploy a bunch of point-source boxes as a line-array and have it work out very well. (Some have tried. Some have thought it was okay. I don’t feel comfortable recommending it.)

Option 1: Single Arrival, “Point Source” Flavor

You can build a tall stack or hang an array with built-in, non-changeable angles, but both cases use the same idea: Any given audience member should really only hear one box (per side) at a time. Getting the kind of directivity necessary for that to be strictly true is quite a challenge at lower frequencies, so the ideal tends to not be reached. Nevertheless, this method remains viable.

I’ve termed this deployment flavor as “single arrival” because all sound essentially originates at the same distance from any given audience member. In other words, all the PA loudspeakers for each “side” are clustered as closely as is practical. The boxes meant to be heard up close are run at a significantly lower level than the boxes meant to cover the far-field. A person standing 50 feet from the stage might be hearing a loudspeaker making 120 dB SPL at 3 feet, whereas the patrons sitting 150 feet away would be hearing a different box – possibly stacked atop the first speaker – making 130 dB SPL at 3 feet. As such, the close-range listener is getting about 96 dB SPL, and the far-field audience member also hears a show at roughly 96 dB SPL.

This solution is relatively simple in some respects, though it requires the capability of “zone” tuning, as well as loudspeakers capable of high-output and high directivity. (You don’t want the up-close audience to get cooked by the loudspeaker that’s making a ton of noise for the long-distance people.)

Option 2: Single Arrival, Line-Array Flavor

As in the point source flavor, you have one array deployed “per side,” with each individual box as close to the other boxes as is achievable. The difference is that an honest-to-goodness line-array is meant to work by the audible combination of multiple loudspeakers. At very close distances, it may be possible to only truly hear a small part of the line, and this does help in keeping the nearby listeners from having their faces ripped off. However, the overall idea is to create a radiation pattern that resembles a section of a cylinder. (Perfect achievement of such a pattern isn’t really feasible.) This is in contrast to point-source systems, where the pattern tends towards a section of a sphere.

As is the case in many areas of life, everything comes down to surface area. A sphere’s surface area is 4*pi*radius^2, whereas the lateral surface area of a cylinder is 2*pi*radius*height. The perceived intensity of sound is the audible radiation spread across the surface area of the radiation geometry. More surface area means less intensity.

To keep the calculations manageable, I’ll have to simplify from sections of shapes to entire shapes. Even so, some comparisons can be made: At a distance of 150 feet, the sound power radiating in a spherical pattern is spread over a surface area of 282,743 square feet. For a 10-foot high cylinder, the surface area is 9424 square feet.

For the sphere, 4 watts of sound power (NOT electrical power!) means that a listener at the 150 foot radius gets a show that’s about 71 dB. For the cylinder, the listener at 100 feet should be getting about 86 dB. At the close-range distance of 50 feet, the cylindrical radiation pattern results in a sound level of 91 dB, whereas a spherical pattern gets 81 dB.

Putting aside for the moment that I’m assuming ideal and mathematically easy conditions, the line-array has a clear advantage in terms of consistency (level difference in the near and far fields) without a lot of work at tuning individual boxes. At the same time, it might not be quite as easily customizable as some point-source configurations, and a real line-source capable of rock-n-roll volume involves a good number of relatively expensive elements. Plus, a real line has to be flown, and with generous trim height as well.

Option 3: Multiple Arrival, Any Flavor

This is otherwise known as “delays.” At some convenient point away from the main PA system, a supplementary PA is set. The signal to that supplementary PA is made to be late, such that the far system aligns pleasingly with the sound from the main system. The hope is that most people will overwhelmingly hear one system over the other.

The point with this solution is to run everything more quietly and more evenly by making sure that no audience member is truly in the deep distance. If each PA only has to cover a distance of 75 feet, then an SPL of 90 dB at that distance requires 118 dB at 3 feet.

The upside to this approach is that the systems don’t have to individually be as powerful, nor do they strictly need to have high-directivity (although it’s quite helpful in keeping the two PA systems separate for the listeners behind the delays). The downside is that it requires more space and more rigging – whether actual rigging or just loudspeakers raised on poles, stacks, or platforms. Additionally, you have to deal with more signal and/ or power runs, possibly in difficult or high-traffic areas. It also requires careful tuning of the delay time to work properly, and even then, being behind or to the side of the delays causes the solution to be invalid. In such a condition where both systems are quite audible, the coherence of the reproduced audio suffers tremendously.


If I end up trying the Gallivan show again, I think I’ll go with delays. I don’t have the logistical resources to handle big, high-output point-source boxes or a real array. I can, on the other hand, find a way to boxes up on sticks with delay applied. I can’t say that I’m happy about the potential coherence issues, but everything in audio is a compromise in some way.


A Proven Methodology For Winning At Thermonuclear War

You may know the answer already, but you might prefer not to admit it to yourself.

Please Remember:

The opinions expressed are mine only. These opinions do not necessarily reflect anybody else’s opinions. I do not own, operate, manage, or represent any band, venue, or company that I talk about, unless explicitly noted.

Want to use this image for something else? Great! Click it for the link to a high-res or resolution-independent version.

The cultural apex that was the 1980s taught us the answer to this one. The only winning move in Global Thermonuclear War is not to play. Sadly, in the world of audio and music, people play Global Thermonuclear War all the time.

What I mean by this is quite simple: People will throw vast amounts of money and time at all manner of problems and conflicts, hoping to solve them through technological means. This is, of course, encouraged by the equipment manufacturing and vending industry, which makes quite a bit of scratch on the premise that “there is something you can buy to fix this.”

And, you know, they are actually right. They are right in the sense that pretty much any sonic issue you can imagine is fixable if you have unlimited resources. I’ve said this to people on multiple occasions myself. “We can absolutely fix this.” Of course, I then follow up with: “How much time and money do ya got?” I can absolutely, positively, make your giant echo-chamber of a gym sound like a control room in Abbey Road studios. That is totally possible. I’ll need a starting budget of $100,000 for acoustical treatment and install labor, plus six weeks to get the task accomplished.

Oh, you were thinking of going down to that place that’s a “center” of guitars and plonking $200 down on some doodads? Yeah, that’s not really going to do it for you…

Recently, I was discussing a particularly difficult situation with a fellow, local-music human. A venue is constantly in trouble with its in-building neighbors for being too loud. The stage has been torn open and deadened. The absolute minimum necessary signal is run through the PA. Drumkits are not miced at all. Are the neighbors still pissed? Yup. What’s pissing them off? The drums of course. So, the inevitable question was asked – does the place need to get a drumshield, or a ton of acoustical foam for the walls?

Well, neither of those things is likely to work. I have a very strong hunch that the drumshield would help a little, by reducing some of the sound traveling through the air to the walls and ceiling. Even so, the shield won’t do anything at all to stop mechanical transmission from the stage to the building structure (which is what I think is the real killer), nor will it provide what I imagine the disgruntled co-tenants actually want: A 20 – 30 dB drop in level. By the same token, a big spend on in-room treatment will make the venue’s space dead, but won’t do squat when it comes to stopping the walls from moving due to low-frequency material and physical impact.

Isn’t there a technological fix? Of course there is! The establishment can close for a couple of months while everything is ripped out, and a soundproof chamber is built inside the existing shell. The ceiling and walls could be completely decoupled, and the floor could be floated. The whole shebang would be built of cinderblock filled with concrete. At last, the other folks would have peace and quiet, even if someone threw a death-metal show into the mix.

Possible? Yes. Plausible for any reasonable investment? Not a snowball’s chance.

As such, my answer to the query was, “Don’t book rock bands in there anymore.” The fight isn’t worth fighting, because more and more time and money is being thrown at a conundrum that isn’t getting solved. Irritated neighbors don’t award points for effort. The goings-on is a slugging match, a contest of wills between groups that want fundamentally different and incompatible things. To give the other guys what they want while getting the music side what it wants just isn’t practical in real life. Live-music can still happen in that space, but it needs to start out quiet instead of being turned into quiet “ex post facto.”

As such, the way to win the game is to stop playing. Gordian knots aren’t untied – they are cut.


Up In The Air

A good rigger is an important person.

Please Remember:

The opinions expressed are mine only. These opinions do not necessarily reflect anybody else’s opinions. I do not own, operate, manage, or represent any band, venue, or company that I talk about, unless explicitly noted.

Want to use this image for something else? Great! Click it for the link to a high-res or resolution-independent version.

This is one of those topics that’s a little outside of a small-venue context.

But it’s still good to talk about.

I recently had the opportunity to work on a “big-rig” show. What I mean by that is we had six JBL SRX subwoofers deployed, along with two hangs (four boxes each) of JBL VRX. For some folks, that’s not a huge system, but for me it’s pretty darn large. Going in, I was excited to be on the crew for the event – and also a bit apprehensive. I had never before had any “hands-on” experience with rigging and flying a PA system.

As it turned out, my anxiety was misplaced. When you finally get up close and personal with a box like VRX, you realize that the box-to-box flyware is really easy to understand and operate. Constant-curvature arrays are hard to get wrong in and of themselves. You would basically have to actively attempt to screw up the hang in order to run into a problem. The boxes have a built-in angle, so you don’t have to think about much other than lining a couple of ’em up, flipping the connection flanges into place, and inserting the fly pins.

Another reason my anxiety was misplaced was twofold:

1) We had a good rigger on hand.

2) Everybody implicitly agreed that the rigger was the “lead dog.”

What I mean by point two is that I consider there to be exactly one proper attitude towards an honest-to-goodness, card-carrying rigger. That attitude is that you listen to the rigger, and do EXACTLY as the rigger tells you.

I don’t think I can stress that enough.

An actual rigger is somebody who can safely hang very heavy things above people’s heads, and has the maturity to do it the right way (with no tolerance for shortcuts or other horse-dip). They realize that getting a hang wrong may be a very efficient way to end people’s lives. They distinguish between “reasonably safe” and “truly safe,” and will not allow anyone to settle for the former.

As such, their word is law.

I DO think that safe rigging is within the mental capacity of the average human. However, I also think that there are numerous particulars of equipment and technique which are not immediately intuitive or obvious. I think it’s easy for an un-educated person to hang things the wrong way without realizing it. That’s why, when a rigger shows up in a situation where everybody else is NOT a rigger, the rigger immediately becomes the person in charge. Somebody else may be making executive decisions on what’s wanted for a hang, but the human with the most experience at actually flying things makes the final call on what can be done and how.

(If you ever get into a situation that appears to be the opposite of that, I think you should be concerned.)

Like I said, the case on this show was that everybody was listening to the rigger.

And that meant that everything got up in the air safely, stayed up in the air safely, and came down safely after everything was done.


Entering Flatland

I encourage live-audio humans to spend lots of time listening to studio monitors.

Please Remember:

The opinions expressed are mine only. These opinions do not necessarily reflect anybody else’s opinions. I do not own, operate, manage, or represent any band, venue, or company that I talk about, unless explicitly noted.

Want to use this image for something else? Great! Click it for the link to a high-res or resolution-independent version.

Do you work in live-audio? Are you new to the field? An old hand? Somewhere in between?

I want to encourage you to do something.

I want you to get yourself a pair of basically decent studio monitors. They shouldn’t be huge, or expensive. They just have to be basically flat in terms of their magnitude response. Do NOT add a subwoofer. You don’t need LF drivers bigger than 8″ – anything advertised to play down to about 40 Hz or 50 Hz is probably fine.

I want you to run them as “flat” as possible. I want you to do as much listening with them as possible. Play your favorite music through them. Watch YouTube videos with them passing the audio. When you play computer games, let the monitors make all the noises.

I want you to get used to how they sound.

Oh, and try to tune your car stereo to sound like your studio monitors. If you can only do so coarsely, still do so.

Why?

Because I think it’s very helpful to “calibrate” yourself to un-hyped audio.

A real problem in live music is the tendency to try to make everything “super enhanced.” It’s the idea that loud, deep bass and razor-sharp HF information are the keys to good sound. There’s a problem, though. The extreme ends of the audible spectrum actually aren’t that helpful in concert audio. They are nice to have available, of course. The very best systems can reproduce all (or almost all) of the audible range at high volume, with very low distortion. The issue is over-emphasis. The sacrifice of the absolutely critical midrange – where almost all the musical information actually lives – on the altar of being impressive for 10 seconds.

I’m convinced that part of what drives a tendency to dial up “hyped” audio in a live situation is audio humans listening to similar tonalities when they’re off-duty. They build a recreational system that produces booming bass and slashing treble, yank the midrange down, and get used to that as being “right.” Then, when they’re louderizing noises for a real band in a real room, they try to get the same effect at large scale. This eats power at an incredible rate (especially the low-end), and greatly reduces the ability of the different musical parts to take their appointed place in the mix. If everything gets homogenized into a collection of crispy thuds, the chance of distinctly hearing everything drops like a bag of rocks tied to an even bigger rock that’s been thrown off a cliff made of other rocks.

But it does sound cool!

At first.

A few minutes in, especially at high volume, and the coolness gives way to fatigue.

In my mind, it’s a far better approach to try to get the midrange, or about 100 Hz to 5 kHz, really worked out as well as possible first. Then, you can start thinking about where you are with the four octaves on the top and bottom, and what’s appropriate to do there.

In my opinion, “natural” is actually much more impressive than “impressive,” especially when you don’t have massive reserves of output available. Getting a handle on what’s truly natural is much easier when that kind of sonic experience is what you’ve trained yourself to think of as normal and correct.

So get yourself some studio monitors, and make them your new reference point for what everything is supposed to sound like. I can’t guarantee that it will make you better at mixing bands, but I think there’s a real chance of it.


A Weird LFE Routing Solution

Getting creative to obtain more bottom end.

Please Remember:

The opinions expressed are mine only. These opinions do not necessarily reflect anybody else’s opinions. I do not own, operate, manage, or represent any band, venue, or company that I talk about, unless explicitly noted.

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This is another one of those case studies where you get to see how strange my mind is. As such, be aware that it may not be applicable to you at all. I had a bit of a conundrum, and I solved it in a creative way. Some folks might call it “too creative.”

Maybe those people are boring.

Or they’re reasonable and I’m a little nuts.

Anyway.

I’ve previously mentioned that I handle the audio at my church. We’ve recently added some light percussion to complement our bass-guitar situation, and there was a point where our previous worship leader/ music director wanted more thump. That is, low frequency material that was audible AND a bit “tactile.” In any case, the amount of bass we had happening wasn’t really satisfying.

Part of our problem was how I use system limiting. I’ve long nursed a habit of using a very aggressive limiter across the main mix bus as a “stop the volume here” utility. I decide how loud I want to get (which is really not very loud on Sundays), set the dynamics across the output such that we can’t get any louder, and then smack that processor with a good deal of signal. I’ve gotten to a point where I can get it right most of the time, and “put the band in a box” in terms of volume. Drive the vocals hard and they stay on top, while not jumping out and tearing anyone’s face off when the singers push harder.

At the relatively quiet volume levels that we run things, though, this presents a problem for LF content. To get that extended low-frequency effect that can be oh-so-satisfying, you need to be able to run the bass frequencies rather hotter than everything else. The limiter, though, puts a stop to that. If you’re already hitting the threshold with midrange and high-frequency information, you don’t have anywhere to go.

So, what can you do?

For a while, we took the route of patching into the house system’s subwoofer drive “line.” I would run (effectively) unlimited aux-fed subs to that line, while keeping the mains in check as normal, and we got what we wanted.

But it was a bit of a pain, as patching to the house system required unpatching some of their frontend, pulling an amp partially out of a cabinet, doing our thing, and then reversing the process at the end. I’m not opposed to work, but I like “easy” when I can get it. I eventually came to the conclusion that I didn’t really need the house subs.

This was because:

1) We were far, far below the maximum output capacity of our main speakers.

2) Our main speakers were entirely capable of producing content between 50 – 100 Hz at the level I needed for people to feel the low end a little bit. (Not a lot, just a touch.)

If we wouldn’t have had significant headroom, we would have been sunk. Low Frequency Effects (LFE) require significant power, as I said before. If my artificial headroom reduction was close to the actual maximum output of the system, finding a way around it for bass frequencies wouldn’t have done much. Also, I had to be realistic about what we could get. A full-range, pro-audio box with a 15″ or 12″ LF driver can do the “thump” range at low to moderate volumes without too much trouble. Asking for a bunch of building-rattling boom, which is what you get below about 50 Hz, is not really in line with what such an enclosure can deliver.

With those concerns handled, I simply had to solve a routing problem. For all intents and purposes, I had to create a multiband limiter that was bypassed in the low-frequency band. If you look at the diagram above, that’s what I did.

I now have one bus which is filtered to pass content at 100 Hz and above. It gets the same, super-aggressive limiter as it’s always had.

I also have a separate bus for LFE. That bus is filtered to restrict its information to the range between 50 Hz and 100 Hz, with no limiter included in the path.

Those two buses are then combined into the console’s main output bus.

With this configuration, I can “get on the gas” with low end, while retaining my smashing and smooshing of midrange content. I can have a little bit of fun with percussion and bass, while retaining a small, self-contained system that’s easy to patch. I would certainly not recommend this as a general-purpose solution, but hey – it fits my needs for now.