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THETA DIGITAL INVENTED SEPARATE COMPONENT DIGITAL TO ANALOG CONVERTERS SHORTLY AFTER THE INTRODUCTION OF COMPACT DISC PLAYERS, IN ORDER TO PROVIDE IMPROVED SOUND QUALITY FROM DIGITAL SOURCES. Theta has won acclaim for pioneering important technology in high end (audiophile) digital sound reproduction. The Voyager Universal Transport stems from over a decade of intensive research and development refining all aspects of digital signal reproduction. DVD, as a medium, presents new challenges. The audio sampling frequencies are higher than CD's 44.1 kHz: 48kHz and 96kHz, and the video is presented in a purely digital form, unlike laser discs, which are recorded and played back in analog format. Voyager is based on a very stable Pioneer drive mechanism for highly accurate reading of the disc. Then, Theta's jitter and digital noise reduction technologies deal with the two most pervasive problems in digital signal processing. DVD's disparate clock speeds (16mHz audio and 18mHz video) multiply digital noise, as they tend to interact. This noise can degrade both sound and picture, creating less than satisfying audio performance and video that is unclear, noisy and lacking three dimensionality. Voyager brings radical technological solutions to both the audio and video sections. Theta solves jitter problems by buffering and reclocking digital data: the buffer becomes your source, rather than flawed discs, and provides a more perfect signal. A custom-manufactured low-jitter crystal oscillator at its heart, Voyager's master clock actually stores the signal long enough to realign data, correcting raw data as it comes from the disc. (More detailed information is available on Theta's proprietary Jitter Jail technology.) In the audio section, high-speed CMOS logic gates used in reclocking, and extensive use of ground planes, prevent digital noise and hash from corrupting this pure clock signal. Theta-designed low-flux transformers and high isolation power supplies feed each key area of the audio board, isolating clocks and DSP sections. Finally, the signal is output through extremely high frequency pulse transformers to a varied array of output terminals. Formats include PCM, Dolby digital 5.1, and DTS outputs via RCA, BNC and AES/EBU connections. As optional factory installed optical output is available in either AT&T or Theta's proprietary Single Mode. The video sections are handled as meticulously as the audio. Multiple transformers and high isolation power supplies separately feed critical areas of the video section, including the clocks, output circuits and main DVD decoder circuits. In addition, the motor controller and display are isolated from the rest of the circuits. In total, the Voyager has seven transformers and twenty-one highly regulated power supplies. This careful separation of audio, video, display and motor power supplies keeps circuits from interacting. This assures that each circuit is kept as free from both digital and electromechanical noise as possible. The DVD decoder power section is then filtered again at key points to further minimize residual noise. After the digital video signals are converted to analog signals, they are sent to individual Theta-designed video filters and extremely high-speed output buffers. Video outputs include: 2 S-video, 2 Composite Video (RCA/BNC) and Component Video (BNC). Also included are left and right analog outputs for the analog tracks of Laser Discs as well as an AC-3 RF output for Laser Discs. The Voyager uses two separate laser head pickups. One laser is used for the playback of DVD source material and has a wavelength of 650nm. The second is used for the playback of CD's and Laser Discs and has a wavelength of 780nm. This assures the maximum performance of each type of source material. A high speed Epsilon Turn Mechanism automatically plays the second side of a Laser Disc for added convenience. On-screen displays simplify control of all options, settings and functions and are accessed via the comprehensive remote control. Voyager offers the most perfect playback, in all formats,
that we at Theta Digital know how to provide. Highlights o Unmatched Flexibility with the Highest Quality Performance. o Compatible with all optical formats: DVD; LD; CD; VCD; CDV; VSD o Upgrade path to Emerging DVD Standards o 24bit/96kHz Digital Audio Output for full bandwidth high-performance playback of music DVDs o Composite, "S," and Component Video Outputs o DTS®, Dolby Digital®, PCM
o Dual Lasers for Optimum Resolution of All Formats o Only "Videophile" Quality Laser Disc Transport o RS232 option |
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