A conventional PAL analogue TV set emits a signal at a frequency of 50 frames per second - 50Hz. Our eyes are sensitive to this frequency and at times a 50Hz picture appears to flicker. 100Hz technology digitally creates a replica of each frame and inserts it after the one before. This significantly reduces flicker. But it still does not produce a completely smooth picture (especially with fast motion video). Panasonic has therefore enhanced standard 100Hz technology with Advanced 100Hz Super Digital Scan and other unique picture enhancing features such as Acuity.
2.35:1
Known as Cinemascope, this is the widest aspect ratio commonly used by movie-makers
2-channel Dolby Digital Recording
Panasonic DVD recorders can record Dolby Digital programme material as two channel stereo.
2-way
Most loudspeakers have two drive units. The tweeter is the smaller unit and handles higher frequencies while the larger woofer is for mid to lower frequencies. The electronic circuitry inside the speaker features a crossover. This sends the signals from an amplifier to the appropriate drive unit - in a 2-way speaker, high frequency signals are sent to the tweeter and lower ones to the woofer. 3-way speakers also exist and you may come across speakers that have more than two drive units in each cabinets. But note, that these speakers can only be described as 3-way if their crossovers filter and send signals three ways.