In many home entertainment applications, a perforated screen is often utilized. As in commercial cinemas, this allows transparent sound to radiate from the center channel behind the screen.

Although rare, when using any fixed resolution projection device, including DLP™ technology on a perforated screen, a moiré pattern may sometimes be a visible artifact. The moiré is caused by the interaction of the DLP™ mirror array, or the source frequency, with the screen perforation pattern.

If you experience this phenomenon, you can minimize moiré by applying some or all of the
following steps:

• Slightly increase the size of the projected image. Use projector blanking to mask the overshoot of the image.
  
• Adjust the projector pixel clock for the source.
  
• If the above options do not work, slightly defocus the image.
  
• If all else fails, consider utilizing a perforated screen with a different perforation pitch.

Tech Tip Archive

Demo Program: Commercial AV - Full Line and Precision Line Dealers:

• Dealers and Special Contractors may purchase up to two demo units per calendar year.
  
• Demo units may be purchased at 5% off of DPI's published end column Commercial AV dealer pricing
  (End Column x .95).
  
• Excluding iVision, which already comes standard with a lens, the 5% demo discount may also be
  applied to (1) projection lens for each demo projector purchased.

• Dealers in good credit standing receive standard payment terms - 2% cash with order, 1% 10 days,
  net 30 days.

Home Cinema Dealers:

• Home Cinema Dealers may purchase (1) demonstration iVision projection system per calendar year at
  50% off DPI's published list price. So long as that unit is maintained in the Dealer's demonstration inventory through the end of the calendar year it was purchased, and the dealer retains in their employ at least one technical associate who has received Digital Projection training certification, the Dealer qualifies for Elite
  Home Cinema end column pricing on all additional iVision projectors purchased through the end of the
  same calendar year.

• Home Cinema Dealers may purchase (1) demonstration 3-chip DLP projection system per calendar year
  at 50% off DPI's published list price. So long as that unit is maintained in the Dealer's demonstration inventory through the end of the calendar year it was purchased, and the dealer retains in their employ at least one technical associate who has received Digital Projection training certification, the Dealer qualifies for Elite
  Home Cinema end column pricing on all additional 3-chip DLP projectors purchased through the end of the same calendar year.

• For both iVision and 3-chip demo projectors, Home Cinema Dealers in good credit standing receive
  standard payment terms - 2% cash with order, 1% 10 days, net 30 days .

• Alternatively, upon credit approval, Home Cinema Dealers my purchase (1) MERCURY 3 Chip projection
  system per calendar year at DPI's published end column dealer price with payment terms of 12
  monthly payments at 0% interest. Certain restrictions apply.

Manufacturer's Representatives:

Rich Jackson
ANSR
8430 Enterprise Way, Oakland, CA 94621
510-638-3800

Joe Blacker
Audio Associates
9160 Red Branch Road, Ste.E-5, Columbia, MD 21045
410-964-1212

Eric Leicht
AV Partners
3272 Windflower Circle, Thousand Oaks, CA 91360
805-492-7055

Sharon Culotta
Culotta Communication
247 D Street, Suite 108, San Rafael, CA 94901
408-836-5671

Larry O'Neill
Dobbs Stanford Corporation
2715 Electronic Lane, Dallas, TX 75220
214-350-9009

Kenneth Colson
E.D.A. Sales, Inc.
5815 Live Oak Parkway, Suite 2G, Norcross, GA 30093
770-300-9484

Steve Johnson
HP Marketing Company
7340 South Alton Way, # G, Englewood, CO 80112
303-804-9566

Dan Muckle
Muckle Sales, Inc.
7150 SW Hampton Street, Suite 115, Tigard, OR 97223
503-620-0444

Gene Beckstein
Omni Media Fl.
25211 Roland Lane
Punta Gorda, FL 33955
800-714-4404

Marla Suttenberg
Sapphire Marketing LLC
1 Kalisa Way, Suite 108, Paramus, NJ 07652
201-576-9490

Frank Weese
Visitec
2020 Dean St - L2A, St. Charles, IL 60174
630-762-0300