APPENDIX B - THX INFORMATION

Below is a summary of issues and information related to the proprietary and patented THX processing incorpo- rated used in the SP1. The available space cannot include all the available information on this topic. Therefore, if you want more information or wish to research the topic in more detail please use the THX website at WWW.THX.COM.

When you choose the THX option for surround decoding modes within the SP1.7, by pressing the THX button on the front panel or the remote, an additional “post-processing” method is activated. The additional signal pro- cessing used in this mode is the result of extensive research, testing and refinement by the technical and engi- neering staff at LucasFilm, Ltd. All movie soundtracks regardless of their original encoding format (Dolby Digital, Dolby Pro-Logic, DTS, Stereo or Mono) can benefit from THX post-processing.

NOTE: THX is only available with movie modes PLII Film, NEO:6 Cinema, Pro Logic, Dolby Digital, and

DTS as per THX licensing agreements.

The THX mode would not normally be activated for music or movies that were made specifically for television or other broadcast shows such as sports programming. The THX processing, designed to compensate for large room mixing environments is not required for these programs because they are normally mixed/post-produced in small room environments, as opposed to the large room environments normally used for theatrical motion pic- ture mixing/post-production.

The SP1’s THX mode adds additional DSP post-processing to either the Dolby or DTS processing already in place to help create a more precise match between the sound produced within a commercial motion picture the- ater and the sound produced in your residential ‘theater’.

THX’s research shows that this is necessary because, all of the multi-channel film sound formats were originally designed and spectrally balanced for use within large commercial movie theaters. Moreover, the specially equipped and designed theater used by the sound mixing professionals to produce the final theatrical audio track on any film (called a ‘dubbing stage’) is also considerably larger than your ‘home theater’ since it was created to replicate the environment of a typical commercial cinema space, not your home theater space.

It is in those “dubbing stages” that the dialogue, sound effects and music are all individually recorded and mixed to a six (5.1) or four channel(Pro- Logic) soundtrack for release in commercial movie theaters. This is the same soundtrack that is later released on videotape and DVD for playback in a Home Theatre system.

During their research, the THX engineers identified the fundamental tonal and spatial errors created when Theatre environment film sound tracks are reproduced in residential spaces.

The SP1.7, contains special processing designed by THX to correct those errors and restore the appropriate tonal and spatial balance to a movie soundtrack, so that you can hear what the film’s producer/director intended.

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Bryston SP1.7 Series manual Appendix B THX Information, DTS as per THX licensing agreements
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SP1.7 Series specifications

The Bryston SP1.7 Series is a sophisticated audio preamplifier designed to deliver exceptional sound quality and versatility for home theater and audio enthusiasts. Known for its high fidelity and robust construction, the SP1.7 reflects Bryston's commitment to excellence in audio engineering.

One of the standout features of the SP1.7 is its advanced digital signal processing (DSP) capabilities. The unit supports a wide range of audio formats, including Dolby Atmos and DTS:X, ensuring that users can experience immersive sound in their home theater setups. The built-in DSP allows for room correction, which optimizes audio performance based on the unique acoustics of the listening environment, providing a more balanced and accurate sound.

The SP1.7 Series also boasts multiple HDMI inputs. With support for high-resolution audio formats, these inputs facilitate seamless integration with modern AV sources. The unit can handle 4K video pass-through, maintaining the highest quality for both audio and visual performance. This level of connectivity is essential for today's discerning consumers who demand versatility and convenience in their audio systems.

In terms of audio quality, the SP1.7 features top-notch components, including high-performance DACs (Digital-to-Analog Converters) and a low-noise power supply. This ensures that the signal path remains clean and free of interference, delivering crystal-clear audio reproduction. Furthermore, the SP1.7 supports among the highest industry standards for signal-to-noise ratio, ensuring that subtle details in the music or movie are preserved.

User-friendly operation is another hallmark of the SP1.7. The intuitive interface, complete with an easy-to-read display, allows users to navigate through settings effortlessly. The preamplifier is also equipped with robust remote control functionality, allowing users to manage their audio environment from a distance.

With its sleek design and solid build quality, the Bryston SP1.7 fits seamlessly into any home theater or audio system setup. Built to last, Bryston is known for offering a 20-year warranty on their products, reassured by their reputation for durability and reliability.

In summary, the Bryston SP1.7 Series stands out as a premier choice for audiophiles and home theater enthusiasts. With its advanced DSP capabilities, multiple connectivity options, superior audio quality, and user-friendly features, the SP1.7 combines cutting-edge technology with exceptional craftsmanship, making it a top contender in the realm of audio preamplifiers.
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