
As an AV installer I definitely see my share of configuration mistakes. While some are blatantly obvious like a blu-ray player set to 480i, others are less so. Here’s 5 off the top of my head:
1. Using your TV as an audio switch
Got an older non-HDMI receiver and want to integrate it with your system? Connecting your HDMI sources to your TV and using the optical output to your receiver should do the trick right? Wrong. While you’ll definitely get 5.1 Dolby Digital from over-the-air broadcasts, virtually all televisions today will not pass multi-channel audio from HDMI to optical. That means the audio from your cable box, DVD player and game consoles will downgrade to 2 channel PCM when passed through your flat panel so keep that in mind. It’s always best to connect each device directly to the AVR instead.
2. Not running your AVR automatic setup properly
Today’s receivers are more advanced than ever consisting of processing power available in a full blown PC just a few years ago. These chips are used for things like room correction algorithms that run in real time! To get all the technology you paid for, follow the instructions that came with your device and make sure the setup microphone is placed at ear height using a tripod and NOT on the sofa seat cushion. A little prep work goes a long way in improving sound quality.
3. Overscan
The word “overscan” is like nails on a chalkboard for a professional calibrator. Overscan is the ~3% zoom that many televisions apply by default to shield you from artifacts on the edges of broadcast television. It’s a legacy problem inherent in the CRT days, however in the world of digital television overscan does nothing but rob you of information and overall picture clarity. Bottom line: Look through your TV menu’s and find a way to turn it OFF. Unfortunately manufactures have not settled on a standard name for overscanning so read the manual carefully before pushing random buttons.
4. Poor speaker placement
Most people seem to get the front/center/right speakers correct however the rear speakers are usually improperly placed. For rear speakers you generally want a diffused sound so avoid aiming them directly towards your ears. In the end you want to create a sense of immersion so experiment with the placement of the front and rears to give you the biggest sound “bubble” your space allows.
5. Booming Bass
Let’s face it we all love bass but if you’re calibrating your subwoofer using your favorite movie scenes, chances are it’s way too loud. To avoid damaging your sub and scaring the bejeezus out of people in the next room, use test tones either the ones built into your AVR or from a disc and bust out a radio Shack meter. Be sure the db meter is set to “slow” and “c” weighed and bring them down to the same levels as your other speakers. Your neighbors will appreciate it.
That’s it for now folks! Stay tuned for more in a few weeks!













