Theatre Solution Lyric Auditorium Seating - Manual (Page 6)

Lyric Auditorium Seating Planning, Installation & Specification Manual 5
Lyric Product Advantages
Gravity Tip-Up Seat The Lyric seat tip-up action is attained by the use of a gravity counterweight.
The advantages of a gravity mechanism over a spring or cylinder mechanism are as follows:
Consistent and automatic return to the upright position. Spring mechanisms can have inconsistent tip-
up action due to the variation of the strength or fatigue of the steel springs. This affects the aesthetics of the
room and may affect compliance with egress codes since the seats may not return to a consistent upright
position.
Silent action. Spring mechanisms are likely to develop squeaks and normally produce several loud hits
before coming to a stop.
Seat tip-up will never fail. Because the Lyric mechanism relies on gravity, it will never fail to return the
seat to its upright position. In contrast, as a spring mechanism fatigues, the seat tip-up action will get
slower. Eventually, the spring mechanism may fail to return the seat to the upright position, producing a
possible violation of egress codes.
Seat Construction The Lyric seat is a combination of a rugged steel frame which is built for tough commercial use
and a comfort system that is designed to provide a supportive yet soft feel resulting from the use of elastic
suspension webbing. This system provides a flexible platform for the polyurethane seat cushion which ensures
comfort during extended seating periods and durability over the lifetime of the product.
Silence, durability, comfort. Lyric’s flexible polyurethane foam and elastic web construction offers
significant user comfort over long seating periods. Seats constructed with serpentine springs often fatigue,
sag and fail. This creates an uncomfortable and noisy seat, which may require replacement. Additionally,
the absence of steel springs insures completely silent compression during use.
Lyric Chair Frames The Lyric frames are welded assemblies of heavy gauge and solid steel components. The
advantages of this type of construction are listed below:
Flexibility. The Lyric’s welded steel assembly allows for simple and cost efficient design modifications for
conformance to unique building conditions. Unlike high volume castings, welded construction facilitates
small production run modifications.
Seat Hinges The innovative Lyric seat hinge is molded of Dupont Zytel material and is designed for silent operation
and years of maintenance free performance.
Resilience and Reliability Unlike cast metal hinges, the Lyric seat hinge is able to withstand extreme
impacts and heavy loads with no fear of catastrophic failure. In combination with the gravity tip-up action, the
Lyric seat hinge is unparalleled in excellence of performance.
Cost of Ownership Due to the many product advantages of Lyric seating, and the superior service and warranty
levels offered by TSI, Lyric seating provides a better long-term value. The initial savings associated with the
purchase of a less expensive chair is likely to be lost through ongoing maintenance and replacement during the
lifetime of the product.