The Italian plumber, for example, started off perfectly, but began to degrade a bit as it went along, leading to a frayed bill of his cap and some messed up finger action -- nothing a few more tweaks to the calibrationsystem couldn't help, no doubt.
Yamaha integrated its improved YPAO systemcalibration into the YHT-697BL to ensure more accurate room measurements by confirming that the subwoofer is fully responding before making audio adjustments.
You'll also find the firm's propriety automated systemcalibration (IntelliBeam) along with TV Equal Volume to keep those sudden bursts at bay when it comes time for commercials.