User manual HARMAN KARDON A224 OWNERS GUIDE

[. . . ] Sound quality suffered, and was only two-dimensional. Stereo videocassettes and TV broadcasts offered improved realism, but fell short of delivering a multichannel experience. Dolby* Pro Logic* processing brought surround sound to the movies and home theater so that dialogue was locked in the center of the screen, and effects such as flyovers were more realistic. [. . . ] Today's digital surround sound formats deliver up to eight speaker positions, enabling both precise localization of "point source" effects and enveloping sound for musical programs. The center channel does most of the work, reproducing dialogue, while front left and right speakers position off-screen action and provide the main source of music. Separate surround left, surround right and rear surround speakers provide the anchor points for effects. Completing the picture, the subwoofer is the ". 1" channel you hear about when digital surround formats are described. It reproduces low-frequency, or bass, information. As good as the digital formats are, tens of thousands of older movies and TV shows still require processing to deliver surround sound. But the older decoders cannot deliver five or seven discrete channels or the smooth pans and precise localization possible with digital formats. Originally developed for high-end processors and available exclusively in A/V receivers from Harman Kardon, the Logic 7 modes use proprietary processing techniques to create discrete 5. 1 or 7. 1 sound fields from stereo and surround-encoded programs. Since the five channels outputted by Logic 7 are discrete, Logic 7 can re-create pans not only from front to rear and side to side, but diagonally. How can consumers benefit from Logic 7, a technology that was developed for use by the professional recording industry? Logic 7 was originally developed and introduced by Lexicon, Harman Kardon's sister company. Logic 7 is a proprietary technology; therefore, it can be found only in Harman International products. Harman Kardon incorporates Logic 7 decoding in all of its audio/video receivers, including models AVR 125, A224, AVR 325, AVR 525, AVR 7200, DPR 1001 and DPR 2001. Models with 7. 1 channels (AVR 325, AVR 525, AVR 7200, DPR 1001 and DPR 2001) offer a choice of the 5. 1 or 7. 1 versions of Logic 7, depending on the number of speakers the user has actually connected to his or her system. An even more exciting development is the adaptation of Logic 7 for 96kHz processing, preserving the high resolution and astonishing sound quality of the latest audiophile recordings. Logic 7 Cinema mode is designed for use with matrix-encoded (e. g. , Dolby Surround) sources, including video cassettes, television broadcasts, cable and satellite programs, and many DVDs. Compared to other matrix decoders, Logic 7 provides improved center channel intelligibility, a wider soundstage, improved steering and pans, and dynamic low-frequency effects. Logic 7 Music mode is designed especially for use with two-channel audio sources, and is optimized for accurate reproduction of lead and background vocals and instrumentals. [. . . ] Compared to other matrix decoders, Logic 7 provides improved center channel intelligibility, a wider soundstage, improved steering and pans, and dynamic low-frequency effects. Logic 7 Music mode is designed especially for use with two-channel audio sources, and is optimized for accurate reproduction of lead and background vocals and instrumentals. These sources include most CDs, concerts, FM radio broadcasts and older two-channel sources. [. . . ]