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Home theater system with automatic speaker setup

25.09.2004

The Japanese company Yamaha announced at the beginning of September an inexpensive (about $400) home theater set DVX-S150.

The system includes an AV receiver/player, a front pair of speakers (two 50 mm speakers, 100 Hz...25 kHz), rear satellites, a subwoofer (160 mm LF driver, 30 Hz...200 Hz) and a center speaker. The main unit of the system supports playback of DVD+R/RW, CD-R/RW, MP3, JPEG, and Dolby Digital 5.1, DTS, Dolby ProLogic II audio standards. The power of the built-in amplifier is 225 W (45 Wx5 channels).

In addition, the DVD receiver is equipped with the YPAO function, automatic speaker setup for the environment. It is produced using a highly sensitive microphone, which is installed in the place where the viewer is supposed to be. The back of the receiver has D2, S-Video and two composite inputs, as well as optical, analog and bass audio outputs.

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Comparing the data with simulation results, astronomers have calculated that the black hole at the center of NGC 1332 has a mass 660 million times that of our Sun (plus or minus ten percent). This is about 150 times the mass of the black hole at the center of the Milky Way. This is one of the most accurate measurements of a black hole's mass to date.

Previous studies of NGC 1332 by ground and space telescopes have yielded very different estimates for the black hole's mass, ranging from 500 million to 1,5 billion solar masses.

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