Resources

The Right Color Balance for Ambient Light Rejecting Screens

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Proper color display plays a vital role in the successful implemenation of projectors and screens in spaces with high amounts of ambient light, so don’t sacrifice color accuracy when it comes to ambient light rejecting (ALR) projection screens.

Many ALR projection screens on the market today play with color balance in order to keep as much light as possible away from the eyes of the viewer. This creates an image that doesn’t look quite right, although it’s hard to say why, at least until you do a side-by-side comparison with a screen that is reflecting colors accurately. Then you notice how blue the typical ALR screen image is. 

People depend on correct colors not only to visualize, but also to understand. Our ability to see in color allows us to sense emotion or to see health on the skin of others. Getting the wrong color signal might lead us to misread an enemy’s intentions or to be exposed to unwanted illness. Color balance can even mean the difference between right or wrong diagnoses using a microscope in the lab.

In nature, showing off the correct color warns possible predators that a South American arrow poison frog isn’t a good idea for dinner. Being the right color to blend in with tree branches gets the mantis its insect meals. And if a male peacock’s tail feathers are bright and colorful, females know he’s healthy.

Draper was the first screen manufacturer to make ALR screens that are certified by the Imaging Science Foundation (ISF) for color accuracy. All of its ALR screens have this certification, which means they have no impact on the image color.

When used in conjunction with an ISF-certified (or correctly calibrated) projector, the colors you see appear as they are meant to be, so you can have confidence that no matter how critical the situation, there won’t be any mistakes due to bad color balance.

If you'd like more information on ALR screens and have questions about your projection environment, please call us at 800-747-7301. 

 

The best $100 investment you can make in your sound system for this weekend

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On Friday, we sent you an email that talked briefly about how the earset microphone changed the audio world for the better. Today, we'd like to answer some questions and follow up on that message.

About five years ago we wrote an article calling the earset microphone (originally released by Countryman Associates in about 2001) one of the "three best things that you can do for your sound system". And over the last few years, we've been affirmed over and over by others in national media who agree.

Why is the earset microphone significant and and why do you need one? And even if you already have one, what makes it so effective?

Here's a simple test. Next time you are using a lapel microphone or an earset microphone, move the microphone capsule itself from wherever you have it (corner of mouth or shirt) to the other (shirt or corner of mouth) while continuing to talk and see what happens.

When you move a lapel microphone to the corner of the mouth from the shirt without changing gain, the acoustical volume that you hear gets much louder (about twice as loud), and when you move the earset away from the mouth to the center of your chest, the opposite happens (the volume drops by about half).

That close microphone position is a sound technician's friend. The quality of sound is much more consistent from an earset than from a lapel since the microphone follows the wearer and maintains a distance from the mouth that does not change. And that position requires much less gain to achieve the same acoustical volume so the system remains more stable.

Today, we'd like to remind you that Point Source Audio makes the benefits of earset microphones available starting at $99.95 (up to $449). Point Source makes its microphones compatible with Shure, Audio-Technica, Sennheiser, AKG, MiPro, Telex, Shure, Line 6, JTS and a few others.

So if you're tired of inconsistent performance from your lapel microphone or just need to freshen up what you have, let us know. There's still time before this weekend to get what you need.

Some of the step-up options options offer unbreakable, flexible booms, secure dual-ear mounting and a waterproof assembly. Get more information on the Point Source Audio CO Series earsets here. And please call us if you need more information or have questions.

   

LED Wall - minimum viewing distance, a quick calculator

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We get a lot of questions about how to properly calculate the minimum viewing distance for LED video walls of specific sizes.  Here's an easy calculator. 

Take the video wall pixel pitch in millimeters, multiply by 3 and add 10%. 

For example, we'll use a very common 3.91mm pixel pitch wall panel.  3.91 x 3 = 11.73 + 10% is 12.9'. 

If you view the wall at any closer than about 13', the picture will appear to be very grainy.  The reason for this is that LED wall panels have relative low native resolution (a half-meter panel with 3.91 pixel pitch uses just 128x128 pixels), and it takes several individual panels to create a presentation display like you'd see in an auditorium or church.  A 4x7 grid of these panels will create an 80x139" display (about the same size as a 12' projection screen).  That display will have a native resolution of 896x512 pixels. 

I hope that helps you understand a bit more about minimum viewing distance.  If you have questions about LED video walls and whether they're a good fit for your application, please call us at 800-747-7301.

   

Free System Design Review

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You've undoubtedly asked yourself, "So what exactly does that mean? Free System Design Review.  The words were blocked in red in the advertisement, so I just clicked it.  And now what?" 

What that means is that we're here to help. 

If you're in the market for a new audio, video, lighting and/or projection system or upgrade (or are having problems with what you have), let us know. 

Do you have a proposal in-hand and aren't quite sure what to think of it?  We'll look it over and tell you what we think. 

Do you have questions about wireless microphones, HD video distribution for production and presentation, or on how to improve audio coverage on your auditorium?  These are things that we work with every day, and we'd be glad to provide some ideas. 

Do you have questions about video streaming, laser projectors, multi-site systems, or wonder about next steps as your church grows?  We've worked with one of our church clients from its start with 20 people to about 5000 weekend attendance today, and we can help with system design and equipment standardization.

Sometimes, you just need one more set of eyes (or ears) to solve a problem or to get confirmation of what you're already thinking. 

We're celebrating our 25th year in 2017, so we've seen a lot, and we've learned a lot.  If you think that our experience might be helpful to you, call us at (800) 747-7301.  Or you can send us some photos, a video, an audio recording, take us on a Facetime tour, or email us at gtsales@geartechs.com. 

Technology for Worship: It's what we do.

   

Block 96% of ambient light, without covering the windows

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We could spend all day telling you  about how Da-Lite Parallax screens block over 95% of ambient light from windows and and other light sources. We could describe how it maintains a bright, vibrant image even when a room is filled with natural light. We could thoroughly explain how it offers extremely wide viewing angles, with no speckle or glare. But we'd rather show you.

After all, seeing is believing. That's why Da-Lite created a video to show you the difference.

As you can see, the difference is striking. That's why if you have a brightly lit room, Parallax is the best screen choice for your project.  Please call us for more information on this amazing new screen technology. 

   

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