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A microphone’s polar pattern is the 3-dimensional space surrounding the capsule where it is most sensitive to sound. There are quite a few different patterns but here are 3 of the most popular.
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 If you have ever stepped up to a sound board you’ve probably seen a few knobs labeled HPF and LPF. What do those mean? HPF and LPF stand for High Pass Filter and Low Pass Filter. Some boards have just a HPF, while some boards, especially digital, give you both. A HPF allows high frequencies to pass through, meaning it will filter out low frequencies. Some consoles have a HPF button that has a set cut at 120 or 150hz. A HPF can really help clean up vocals or instrumentation that doesn’t have a lower frequency. A LPF does the exact opposite. It allows lows frequencies to pass through and filters out high frequencies. This is a great tool for instruments like a bass guitar or a kick drum to clean give a clean low end to your mix! It's a simple tool anyone can use! Try it out and see the difference it can make in some of your mixes!  Equipping You To Be the Best!  Have you ever wondered how some of those special features work on your AV equipment? Here at Lambda AV we are dedicated to making your AV experience the best it can be! In our efforts to do this, did you know that Lambda offers classes and training sessions at your convenience? Yes! We do! We would love to help you and your volunteers better understand any AV equipment you have. From lighting and video to sound systems we've got you covered!
Training sessions are created for your specific needs. Lambda offers training for a few hours on any system. We also offer half day training and full day training with a free lunch provided! If a full day of training and a tasty meal isn't enough we also offer training with a checkup beforehand. This includes updating your system and fixing any connection issues you might have. Sound specific training can include your band or we can come set up multi-track recording, if your system is compatible, and practice using those tracks. The opportunities and options are limitless! There is no point in having new gear if you don't know how to use it to it's best ability. Let us show you all the tips and tricks we know! If you are interested in knowing more about our classes and training, give us a call for a free consult.  Transform any meeting space, classroom or presentation space with KliK Boks! KLIK Boks CLASSIC boosts meeting productivity by allowing users to stream from their device, instantly. We love this handy little device and have already installed several for Churches, Nonprofits and Financial institutions in Colorado. Spend less time trying to set up your presentation and more time discussing what really matters in your meetings. Computers, tablets and smartphones can connect natively, even without installing an app. No matter if you have a Mac, PC, IOS or android, you can easily connect to the KLIK. Once connected you can easily switch from one user to another for multi-presenter conferences without the delay of presentation connection.  The KLIK Boks wireless presentation connector allows users to stream content from their computer or mobile device to a display or projector without cables. With both wired and wireless network connectivity on-board, the KLIK Boks integrates with existing infrastructure, allowing seamless availability across an organization. Connect to your monitors with HDMI or any legacy VGA video imputs. Klik creates a hotspot on it’s own or connects to your local wifi wirelessly. KLIK features a powerful media player that allows you to play music or videos. If you're tired of how complicated having a simple meeting has become with your AV aspect, KLIK is an affordable, uncomplicated system to consider. We'd be happy to talk you through any questions you might have.  
 How many times have you snapped the top off a cat5 ethernet connector? Or how often have you crushed it in a high traffic area? Wouldn’t it be great if it looked like a protected xlr end?
Popular in the live production world, but lesser known in other av fields, an answer to this problem is already around. Welcome to the Neutrik “Ethercon” connector. We use these connectors anytime we want to make sure an ethernet cable stays plugged in. If it's used often and we want to make sure the end does not wear out. we use them too. You can add female ethercon connectors to stage boxes or wall plates, and even many times add the outside of an ethercon connector to an existing cable. Check out this link to the Neutrik page and let us know if we can help ruggedize your stage connections! What Are They? And Why Are They Useful? A few times recently we have run into venues and sound technicians that donʼt know about how useful these little Direct Boxes are so we thought this would be a great tech tip to cover. We hope you learn something new and would love to answer any other questions you might have.
A direct box is a device used to interface a guitar or keyboard to a sound system. Inside the box is a set of transformers or coils of wire. The windings of these coils change a signal from high impedance to low impedance. Instruments usually have a high impedance signal because it is a stronger and higher quality signal, however, this signal type has some negatives. It is prone to interference over even short distances and it usually does not interface well to a sound board with low impedance “pre-amped” inputs. Plugged straight into a sound board with an adapter cable instead of a direct box, a guitar will be too loud, and have hum or interference. A direct box allows for a short un-balanced high impedance cable to be correctly converted to a low impedance signal. It then sends the signal down a balanced cable to the sound console. We always recommend having a few of these around as part of your “problem solver kit”. If you want to know how to integrate these little boxes into your system, contact us anytime!  In the audio/visual world one of our biggest fears is that something might go wrong or not work at the worst possible time. One of the ways we have found to minimize the chances of this happening is through a pre-event checklist. Whether producing or directing an event, mixing audio, or even just operating a camera, having a checklist to confirm everything is working properly can save headaches during the event. If you are using volunteers, who may not work with that piece of equipment regularly, this can also help you empower them to learn that area or piece of equipment. Keep the checklists simple and make sure if the operator doesn’t use that specific equipment regularly that they can still understand it and use it as a guide to help them. Use your checklists as markers of what should be working and what someone should be seeing regularly. Spending a few minutes to create a checklist for different pieces of your systems can save you lots of time before and during your events!   We receive lots of questions on a weekly basis of how to make computer and other signals work with professional video switchers. Frequently, when connecting a computer signal to a video switcher the signal must go through a scan conversion. Professional video switchers operate off of a frame rate usually of 29.97 or 59.94 rather than 30 or 60. This is a holdover from legacy TV systems where an offset was left to make room for color information so the signal could still be compatible with black and white. When you connect a computer signal using a simple HDMI to SDI converter it outputs 60p frame rate instead of 59.94 which makes it unable to be understood by the switcher. In order to fix this you need a scan converter. Even more useful would be a scan converter/ scaler combo. We have pictures of several of these useful devices from @datavideo @atomos and #blackmagicdesign. Message us if you have other questions on the very detailed and techie topic of getting video signals to work in your professional video switcher!
 Focusing a camera is a simple task, but most camera operators don't know how to correctly achieve good focus in images. "Critical focus" is a technique we use in broadcast to get accurate focus fast. We took a few minutes to have Trevor, our shop manager, help us demonstrate this for the camera. He may look in focus from a quick glance on the screen when he is at a distance, but when we zoom in we can see he is not. Whenever you may be focusing a camera you need to consider that the distance will change between you and the subject you need to focus on. This includes changing camera locations, or when someone moves back and forth across a stage. Zooming will not change focus because, but It can reveal focus issues.
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