The relative costs and
benefits of using single versus dual projector technology is a topic on which even
movie theatre insiders may not be well informed. However, the decision on which type of projection
set up to use is extremely consequential.
Celluloid Junkie released a fantastic piece this week on the pros and
cons of using a single digital projector or a dual projector in their booth.
On the one hand, a single
projector wins on cost, both in the upfront expense to purchase the equipment
and its ongoing maintenance. With a dual
projector, the theatre is responsible for purchasing and maintaining two of
everything: lenses, mounts, power feeds, cooling systems, etc... On the other hand, a theatre’s increasingly
popular Premium Large Format auditoriums may require a dual projector because of
their ability to produce greater light output to fill a large screen. Dualies also provide the exhibitor with a
certain degree of insurance in guaranteeing an uninterrupted film screening. If one of the dual projectors goes out, the
other can still continue the show. Of
course, if a single projector shuts down, the film screening ends and the show
must be cancelled.
Many exhibitors are using single
projectors in their standard 2D auditoriums and dual projectors in their 3D or PLF
auditoriums. But an evolution in projector
technology is altering that rule of thumb.
Companies like Christie are
releasing innovative new versions of both their single and dual
projectors. Singles can now contain
multiple light sources in one projector, meaning that if one light source
within the projector goes out the show will still go on. Some high-end dual projectors can now provide
up to four light sources, improving image quality and reliability at a premium cost.
