PAGE #28
CONVERSIONS
3 - # 3999 Amplifier power Cable.
4 - # 3701 Magnetic pre-amplifier-"2823DA" amplifier shielded Cable and connector
assembly.
6 - #12815-16 15" PM coaxial Speaker in enclosed bass-reflex baffle; 3 per channel.
4 - # 3712 50 foot Inter-speaker Cable and connector assembly.
2 - # 3714S 50 foot speaker system input Cable and connector assembly.
5 - #12815-12 12" PM coaxial Speaker in enclosed bass-reflex baffle. For auditorium
effects track reproduction. (Quantity varies with auditorium.)
4 - # 3712 50 foot Inter-speaker Cable and connector assembly (Quantity varies with
"12815-12".)
1 - # 3714 100 foot Amplifier-"12815-12" speaker Cable and connector assembly.
1 - #12295 Speaker System-amplifier switching, matching, and loading Panel - stereo-
phonic to regular multiple speaker, one-channel reproduction.
CINEMASCOPE FILM UTILIZING FOUR MAGNETIC SOUND TRACKS - MODEL "12000" (See Page 20)
The following additional components are required to convert the "12000" group (Page 23) to ac-
commodate Cinemascope Film with four-channel stereophonic sound reproduction, including the
fourth channel, auditorium, effects speakers but exclusive of stage speaker equipment and arc
lighting equipment, which excepted items must be coordinated with the amplification systems and
with the projected picture width, respectively. In general, for a given light source and with a
screen of excellent quality and condition the projected picture width (1:2.55) may be increased
under optimum projection conditions by 25% over the conventionally allowed picture width of
1:1.33. In the event that the projected picture ratio of 1:2.55 is too severe the #2249UC .715"
x .715" aperture plate (1:2) may be specified, permitting a projected picture width increment of
approximately 33-1/3% under optimum conditions.
2 - # 2217C Cinemascope Film Feed Sprocket.
2 - # 235C Cinemascope Film Intermittent Sprocket.
4 - # 2191C Cinemascope Film Sprocket.
2 - # 2249CM .679" x .906" Aperture Plate (1:2.55) or #2249UC .715" x .715" (1:2)
Aperture Plate.
2 - * Series II f1.9 coated,six-element objective Projection Lens of selected
focal length to function with anamorphic lens. See objective Lens List
on Page 14 and Cinemascope Lens Chart on Page 30. State type of anamorphic
with which the new objective lenses are to function.
2 - * Anamorphic Lens with support - as selected. (See Page 32.)
2 - #13000-3-S Sound head Mounting Plate ("R-9" to "2810" projector.)(If for other than
"R-9",state type, manufacturer, model and serial number.)
2 - #13000-3-2S Sound head Mounting Plate ("R-9" to "1604" magazine.)(If for other than "R-9",
state type, manufacturer, model and serial number.)
2 - * Four-channel Cinemascope magnetic Sound Head - as selected, but state
type for proper mounting adapters.
1 - * Four-channel magnetic Pre-amplifier with built-in power supply, automatic
control track pre-amplifier suppressor, balanced tandem volume controls, and
changeover switch - as selected.
3 - #12030 80 watt at 2% distortion Power Amplifier, monitor and monitor amplifier,
and equalizer amplifier.
4 - # 3701 Magnetic-pre-amplifier-"12030" amplifier shielded Cable and connector
assembly.
5 - #12815-12 12" PM coaxial Speaker in enclosed bass-reflex baffle for auditorium -
fourth track effects reproduction. (This quantity may vary dependent upon
auditorium and coverage desired.)
4 - # 3712 50 foot Inter-speaker Cable and connector assembly. (Quantity varies with
"12815-12".)
1 - # 3714 100 foot amplifier-speaker Cable and connector assembly.
1 - #12295 Speaker System-amplifier switching, matching, and loading Panel - stereo-
phonic to regular multiple speaker, one-channel reproduction. State type
and input impedance of stage speaker systems.
CUSTOM CONVERSIONS:
The basic and versatile P.E.C. 35mm Motion Picture Sound Projection Mechanism is given to many
special applications, too numerous to detail in this brochure; similarly, the amplification and
speaker equipments offer great versatility, so that the inevitably encountered compromises between
cost and ideal capacities are not deterrent to decisions favorable to P.E.C. equipment.
We invite you to bring to our attention any special applications of 35mm Motion Picture Sound Pro-
jection Equipment, upon which we shall be glad to have our Engineering Department pass.