• サウンドスクリーン

• スクリーンの光学特性
  
  スクリーンの素材ははStudioTek130 G3で、業界のレファレンスになっています．ゲインは1.3で160度という広い視野角を持っています。よほど近づかないと、穴は見えません。自然な発色です。1080Pの固定画素プロジェクターでモアレは認めません。1080pだと3メートルほどの近接視聴でも、プロジェクターの画素やスクリーンの穴など気になりません。通常はスクリーンから5メートルの位置で鑑賞します。視野一杯に画像が展開します。
  
  
• スクリーンの音響特性
  
  業務用なので音響特性などのデーターも完備していて、イコライジングの時に参考になります。サウンドスクリーンは一般的に高域が減衰しますが、聴感上それがほとんどわかりません。測定してみるとわずかに低下しています。高域減衰より問題なのはスクリーンと背面の壁面からの反射音です。スクリーン裏で複雑に干渉して周波数帯域に乱れがでたり、位相特性が悪くなります。スクリーン裏は徹底的に吸音や拡散する処理をしなければ、いい音にはなりません。この点がスピーカーが前面に出る、ピュアオーディオの音響とは大きく異なる点です。サウンドスクリーンを使用するに当たって最も難易度の高いのは、この音響調整だと思います
  
  

• 張り込み式スクリーンの構造
  
  スクリーンのフレームは”AT-2 SERIES FRAME”というアルミ製です。それに弾力性のあるロープを使用しスクリーン生地を張り込んでいます。フレームにアイボルトという金具を３箇所設け、天井からワイアーで吊り下げています。フレームは用途にあわせて他の仕様にすることもできます。
  
  全く皺のない平坦な張り込み式スクリーンは、なんとも気持ちのよいものです。スチュワートは発注時に色んな指定ができます。金属製フレームと張り込みロープは黒い起毛したマスクで覆われ、前からは見えなくなっています。
  

• オリジナル電動昇降装置
  
  

• まとめ
  Stewart 200インチの張り込み吊り下げ式16：9サウンドスクリーンを使用
  重く大きい（30Kg以上、4.7Ｘ2.7m)
  メンテナンスのためのモーターとワイヤーによる特注オリジナル電動昇降式
  スクリーンとその後壁による音響反射の調整が難しい
  5メートルの近接視聴でも画素は認識できず、大きい視野角が取れる
  発色、輝度、透過音声ともに高品質

Stewart’s AT-Frame series are constructed of seamless tubing, heli-arc welds, shock (stretch) cord and "S" hooks to secure the screen’s edge through strategically placed grommets.

• Lace & Grommet style fastening system for easy installation and maintenance
• Optimize with any of Stewart’s flexible projection screen material
• Mitered (square) or Rounded slip-joint corners
• Optional VeLux™ finished panels to create a clean finished look and absorb possible over-scan
• Wrap-Around & Curved options available
• Stewart's exclusive VeLux black velvet appliqué gives any AT-Series Frame a luxurious and finished look. VeLux absorbs any possible over-scan while boosting perceived contrast providing you with superb image quality

AT-2 SERIES FRAME

• 2" Aluminum Tube Frame
• Standard Mitered Corners
• 6" VeLux Border (available without border upon request)
• Curved Frame (optional)
• Lace and Grommet Fastening System
• Available with any of Stewart's Flexible Front or Rear Projection Screen Materials

Microperf X2 THX-Ultra

Stewart Filmscreen introduced Microperforations with a primary goal of allowing audio emitted from speakers placed behind the screen to reach the viewer with a minute effect in audio or visual quality. With over 30,000 miniature holes per square foot of projection material, a Microperforated screen captivates audiences with a superb image and smooth flawless sound.

Microperf X² consists of a unique perforation pattern that Stewart has been using for more than a decade with only slight modifications.  Through extensive research and development, Stewart holds strong as industry leader providing a custom solution eliminating any so-called “Microperf Moiré”.

Microperf X² performs above & beyond in both visual and sound quality during AB comparisons to woven screens and other acoustically treated projection materials available in today's A/V market. The vibrancy of an image shown on a woven screen suffers from cross reflection created by construction of the screen material itself.

Essential to meet only the highest standards within the A/V industry, Stewart's strategically calculated perforation layout avoids compromising image or sound quality in any way. Microperf X² is the # 1 choice, providing the viewer up to 70% more brightness, higher resolution, superior color saturation, and excellent uniformity compared to all the others.

Why Microperf X² is the industry's #1 choice for acoustically transparent material …

• Available with any of Stewart's front projection materials (excluding Silver 3D)
• First projection material to be THX Ultra Certified
• Impeccable image fidelity
• Unbeatable audio quality (no secondary black backing is required)
• Exceptional contrast, color saturation, and uniformity
• Moiré pattern is eliminated
• Significantly less light return/blow-through
• Largest seamless acoustically transparent screen available (maximum material O.D. is 14-1/2 ft by 60 ft)

Torrance, CA – January 30, 2008 - Stewart Filmscreen is proud to have received a Grand Prix Award from the Japanese publication HiVi for their StudioTek 130 G3 front projection screen. Thomas Stewart, CFO of Stewart Filmscreen, went to Japan to personally receive the award during a special awards ceremony attended by 135 of Japan's top audiovisual professionals.

StudioTek 130 G3 still offers the same reference standard of reflectivity and needed gain as the previous version, however, the newer G3 version offers a smoother screen surface with significantly less granularity, providing superior performance with the latest 1080p projectors.

HiVi praised StudioTek 130 G3 for its ability to take full advantage of 1080p resolutions with noticeably increased color saturation and detail. They found the G3 formulated screen, when compared with other screens, was able to display images with a higher dynamic range for pure white and black.

"We are pleased with HiVi's recognition of our StudioTek 130 G3 screen, which has also received an enthusiastic endorsement by Joe Kane Productions,” said Grant Stewart, President of Stewart Filmscreen. "With this new G3 optimization we have created what we believe will be the defacto reference screen for 1080p (and beyond) projection systems."