Recording and Live Sound Tips and Tricks

I would have to say that this is one of the worst titles to an article, but it certainly is a question worth asking. I have recently been interested in reamping. What this means is that the original source material, like an electric guitar, would have its pickups recorded directly via a direct box. After this material is recorded and edited, it would be output through another type of DI box that is designed to convert the line level back to an instrument level as so you may plug a 1/4″ cable from it directly into an amp.

The first few time you do this it seems like the haunted mansion where the amp is seemingly playing itself. I was curious to see if there would be a significant loss in quality in using this method so I have made some examples and I would appreciate your feedback. Why even bother to go through the trouble? This can be a great way as a producer to dial in exactly the sound that you are looking for no matter what rig the session guy shows up with.

Lets say you have an important session and the guitarist shows up with the worst sounding little pawn shop special amp with a blown speaker and spent tubes. Instead of passing out and hitting your head on the console, just run the guitar’s output into a DI and connect the output to his amp so he can hear what he is used to hearing and you will have a raw file to work with through any amp of your choosing at a later date.

Another use of this technique is if you need to track a band all at once and you run out of amp closets. When you really need to keep any bleed out of the overheads because of impending edits, this could well save you butt in the session. Some purists will scoff at the suggestion, but most players will really be interested to see their gear crank out their performance while they are kicking back and relaxing.

Once you have a direct signal on tape or in your DAW, you now have the option of using plug-ins for emulation software as well. There are so many different varieties out there, but most of them will give you several presets that will mimic different classic amplifiers. Some are better than others, but I have been able to get useful sounds with some tweaking out of most that I have sampled.

Below are the test that I have completed to illustrate the different results of these methods. Please excuse the performance.

Original DI guitar signal (Countryman Type85)

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Fender Deluxe Amp (Shure SM57)

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Fender Deluxe Reamp via Radial Pro RMP (Shure SM57)

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Fender Emulation – SansAmp (Champ setting, drive 50%, level 75%)

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Fender Emulation – Amplitube (Warm Clean setting, slight overdrive)

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Marshall DSL 2000 Amp (Shure SM57)

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Marchall Reamp via Radial Pro RMP (Shure SM57)

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Marshall Emulation – SansAmp (JMP-1 Setting, no changes to preset)

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Marshall Emulation – Amplitube (Power Tube setting, added treble, presence, and volume)

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In conclusion, I found that the reamp of a good DI signal is remarkably similar to the original source data. The emulation plug-ins that I used, even with some tweaking, were not too close in getting similar sounds from the presets, but were certainly usable. I would highly recommend use of reamping in any situation that you may benefit from its use. Any loss in sound quality is negligible in relation to the trade off of its usefulness.

These files were created using a Les Paul to a Countryman Type 85 DI which fed directly to a Focusrite pre with no compression, effects, or filtering of any kind. The guitar cabinets were mic’d with a Shure SM57 and left in the exact position with the amplifier settings left untouched once the experiment was started. The SansAmp and Amplitube LE settings were slightly modified from the comparable preset of each actual amp used to closer emulate the direct mic sound as described above. The amps used were a Fender Deluxe Reissue and a Marshall DSL 2000 head connected to a 4×12 vintage Orange cabinet.

1. Think of each monitor as a separate mix than that of the house mix.

If you have four monitors and a house mix, you effectively have 5 separate mixes (4 mono and one stereo). If you are then going to make a recording with a “B” mix… You are then looking at 6 independent mixes. This can all get a bit confusing especially in a hectic environment of 5 bands a night all wanting a sound check and getting to play on time. One thing that should put your mind at ease is that your monitor mixes rarely need to be as complex as the house mix. Usually singers only want to hear themselves, so that is only one source sent to that one monitor. Simple enough, right? This is generally true with most vocalists. Guitars, especially acoustic, are likely to end up in the mix as well. If you have a monitor set up for the drummer, this is usually the most complex stage mix more like that of the house mix. If you think in terms of separate mixes, you are likely to keep this all straightened out in your head while you are in the moment.

2. Give each monitor mix it’s own EQ

This is a very important and overlooked tool that should not be discarded to cut costs. The main benefits to using independent discreet EQ control over each monitor mix is to greatly reduce feedback. This can be done by finding the offending frequencies per monitor location and reducing them. Deductive EQ should always be used; do not boost any frequencies. This is certainly a less is more situation. Also, rolling off the bass around 125kHz and below will make a large difference in clarity. These frequencies are of little help to the musicians on stage and create phase problems much more easily than their siblings in the higher range.

3. Each mix needs it’s own power amp channel

Once you have your own mix and EQ settings, a discreet amp is a must. To have a separate mix then combine them back together completely defeats the purpose. This may sound like a no brainer, but I have mentioned it because you would be surprised what I have seen attempted. There are several amp models that have 4 discreet channels and these would be more that adequate for 4 monitor mixes for a small to medium stage. Generally what you will see in larger settings is 2 channel amps that power 2 mono monitor mixes.

4. Location, location, location

Where you place the monitors will make them more or less effective. You need your performer to hear what they are doing, but you do not want to trap them on stage and you need to be able to give them what they ask for. Wedge floor monitors are the vast majority of what are used. I have see some ceiling mounted wedge speakers that have worked quite well in smaller fixed settings. Side fill speakers are sometimes used in larger stages and are very common for the drummer’s monitor. Speakers in the rear pointing forward are just asking for feedback problems. Make sure that no monitors are pointing anywhere close to directly at open microphones.

5. Treat your stage

Even minor acoustic treatments will make a large difference in what you can do with your monitors. Highly reflective surfaces will make things difficult in making your monitors effective. If your monitor output can bounce off the back wall then to the ceiling and directly back to the mic, you have yourself a pretty serious feedback loop. A club that I have worked at over the past couple years has a large window at the back of the stage. After putting up a furniture pad covering the glass, the monitors were able to be raised significantly for the performers. Basically, a $12 moving blanket solved a major problem. With all the professional acoustic tiles and treatments out there these days the sky is the limit.

I hope that this article will help you get a better mix to your performers resulting in a better overall performance. Also, if a performer can hear themselves clearly on stage, they are far more likely to want to come and play at your venue again.

Surprisingly, most people seem to think that a PA system is really simple to set up. All you have to do is plug a microphone into an amp and hook up the speakers, right? If you are primarily concerned about speech in an auditorium you would be correct. I have seen this setup at countless clubs that claim to be music venues. At this level, a few relatively inexpensive pieces of gear will really make all the difference in the world.

Without getting too much into of the minute details of effects, compression, EQ, crossovers, manufacturers, and speaker designs, I will give you a basic overview of the components of a “standard” music venue setup. (Minute details to follow in future articles.)

Starting from the bottom, lets work our way up. The heart of the operation is the mixer. Make sure that if you are building a system to get all the features that you need from the beginning. It is quite easy to make upgrades later if you do not have to replace your mixer every time to grow. Some examples of quality club mixers are the Mackie Onyx series and the Venice Midas series mixers. Both of these examples have quality preamps for the microphone inserts, excellent routing options, and powerful EQs.

Next on the list is the compression. This is an extremely overlooked part of the puzzle that is very important. This is likely due to the fact that it is widely misunderstood. In simplest terms, compression limits the dynamic range of the signal. What this means (and why it is important) is that you can automatically set the range of the quietest and loudest signals. An overly dramatic example, with an extreme setting, would render a whisper and a scream equal in relative volume. This extreme setting would be defined by sound engineer lingo as squashed. With a more realistic compression setting on individual signals, they all sit better together in the mix and retain some of their original dynamics. Also, using these methods you don’t have to run the system as hot for everything to be clearly enjoyed.

Many compressor units come with built in gates. These are particularly useful if you are using several microphones on a drum set and other percussion. What they do is turn off the mic until there is enough signal that is set to your specification. The benefit is that the fewer “open” mics you have on stage at any given time the less opportunity there is for feedback and other sounds bleeding into unintended microphones. I would be weary using gating when it comes to vocals because it can often chop off the beginning and/or end of words. There is very little more annoying than this to an audience.

A limiter is a more extreme form of compression that will should be positioned at the end of the mix in the signal chain. This will create a brick wall for the entire mix. Any signal that goes past the set threshold will be stopped completely. The setting on this unit should just kiss the slight intermittent peaks. Be forewarned, heavy limiting will completely suck the life out of any mix.

Reverb and delay do not need much explanation. If you are attempting a system of this size you will most likely be familiar with these “echo” and “repeating” effects. Make sure that when you set up these effects and outboard EQs that you are using the board’s inserts and returns. If you are running short on returns, you can use the stereo channels on the board for the effect’s return to the mix.

Headphones are also often missing from the bigger setups. I am still not sure why. The primary benefit in having them is that you can “solo” individual tracks that are only sent to the headphones mix letting you hear what is going on with those particular tracks. This can really help you fine tune certain signals. Remember, it is not what the tracks sound like on their own, but how they all sit together in the mix!

After the limiter I like to use an exciter/enhancer. This will add some EQ and desirable “noise” with a propriety algorithm. Nobody but the designers really know exactly what they do, but your ears will certainly notice the difference. They really do what their name implies. A couple great examples of these devices are the BBE Sonic Maximizer and the Aphex Aural Exciter.

You may have noticed that there are outboard EQs between the mixer on both the main speaker system as well as the monitor system. There are separate reasons for this, but both very important for your overall sound and control. The main speaker EQ is used to compensate for the acoustics of the room. Generally once you make these precise adjustments, you want to leave them alone and lock up the gear so nobody can ruin your hard work. The monitor system requires the EQ to adjust for feedback in the monitors. The preformers on stage need to hear themselves and with the microphones so close to the speakers, there are a few frequencies that may pose a problem. Once you isolate these offending frequencies (different for each room and position), notch them out with the EQ. I highly recommend that you do not boost any of the frequencies; deductive EQ is the way to go in both of these situations.

A subwoofer is an optional addition to a system, but it will put out that low frequencies that many concert goers today are accustomed to hearing in live sound venues. With this kind of bottom end power, people tend to go a little power mad; less is certainly more. Get a good thump going, but do not drown out everything else! Too much bass in a room can cover a vocal and guitar mix more than you would think.

If you do go with the subwoofer option, you will need a good crossover. This sends the low frequencies to the subs and gives the mains a break and puts more sonic energy to the them for the highs and midrange frequencies. You can manually set the cutoff of the frequency split. This decision will depend on the size of your mains and the acoustics of the room.

Finally we come to the snake. This is crucial for getting your sound to and from the booth away from the stage so you can hear what the audience is hearing. You can’t make a good mix if you are sitting with the band. All of your connections will go into the snake and come quite a distance to connect with your mixer. No powered signals should be sent through the snake. You can, however, use the sends on the snake to send the outputs of the mains and monitors from the board to the power amps that should be located near the speakers that they are powering. Make sure to put the amps out of reach of the bands and patrons. Also make sure that your snake will give your enough connections to facilitate everything that you are need to accomplish.

Simple right?! Setting up a live PA system can be quite involved. This is a basic club setup at that. From here we still have microphones, recording setups, and endless effects possibilities. I think that this may be what is exciting about the process. The possibilities are limitless. I hope this may help you if you are attempting to start this project from the beginning or will use this information to upgrade your current systems. Please leave me comments if you find this information useful or have any thought to add that I may have missed.