Use of a highly rigid bamboo material in the center speaker helps achieve an extremely pure, clean sound. A Kelton Subwoofer system with a dual diameter structure delivers a deep, powerful bass. Whisper-Mode Surround allows you to enjoy rich surround sound even when watching movies at low volume. Panasonic DVD home theater products feature a 1080p up-conversion function that converts standard definition images from DVD sources to high definition images. These up-converted signals draw out the maximum performance of an HDMI compatible 1080p HDTV, giving you vivid, sharp and exceptionally detailed high-resolution images to enjoy.