User`s manual

S8S# DBPE807
Super8 Sound Sync Projectors
The projector plays a much more important role in Super 8
fil
mmaking than it does in 16mm. The reason is that the
Super 8 projector is used as part of the sound transfer
system for getting sound from fullcoat to magnetic edge
stripe (and from stripe to fullcoat in the case of single-system
original films). You should therefore give some thought to
the functions you plan for your Super 8 projector before
buying, and you may even find it necessary to buy more than
one machine — with one primarily for screening or presenta-
tion and another dedicated to sound transfer work. If you are
active in Super 8 production you will eventually use still
other types of Super 8 projectors such as continuous-loop
repeating projectors for exhibits, telecine projectors for video
fil
m chain work, Xenon-arc or metal-arc lamp projectors for
theater use, and interlock projectors for screening a workprint
with double-system sound just before final editorial decisions
are made. Most of these types of projectors are available now
from Super8 Sound, and are described below. See the Video
section of the Super8 Sound Catalog for telecine projectors.
Any Super 8 sound-recording projector can be adapted for
sync work with the installation of an inexpensive sync signal
generator, e.g. the one pulse per frame (1/F) magnetic reed
switch device described below (PKIT). This sync signal is
used to control the speed of a fullcoat mag film recorder,
matching up picture and sound on an exact frame-for-frame
basis. All projectors supplied by Super8 Sound are sync
projectors.
To start sound and picture in sync, both projector and record-
er can be plugged into the same switched outlet box. When
power is turned on, both machines make a "common start".
If start frames of picture and sound are precisely at the gate
of the projector and at a calibrated point near the magnetic
head of the recorder respectively, the two will start in sync
and then remain in sync because of the Super8 Sound Re-
corder's speed servo-control. A sync start method superior to
common start is a photoflash start, in which a punched frame
in opaque leader fires an electronic switch to start the full-
coat recorder.
If you want to be able to stop and restart, and even rewind,
in sync, then you need the capabilities of a double-band
(picture film and magnetic film) interlock projector.
The Super8 Sound DoubleBand Projector is a versatile tool
for the Super 8 Filmmaker's sound studio, dubbing theatre
and screening room. It consists of two identical Super 8
sound movie projectors which are mechanically interlocked
to permit stopping, restarting, and even rewinding in prefect
sync. Its primary use is to permit a double-system screening
of an edited workprint and fine-cut sync sound on Super 8
fullcoat magnetic film.
The two projectors can be instantly uncoupled and run sep-
arately. This permits easy threading of picture film and
sound film. Each projector has an inching knob to facilitate
setting of start marks in the gate. Once running in sync,
either projector can be in the playback or the record mode,
permitting sound transfers from fullcoat magnetic film to
magnetic edge stripe, or from stripe to fullcoat.
Each projector is equipped with a once-per-frame (1/F)
sync contact switch, permitting sync operation with the
Super8 Sound Recorder. With the DoubleBand Projector
and two Super8 Sound Recorders, a two-track sync sound
mix can be made while simultaneously viewing the picture
workprint. Of course, wild sounds may be mixed in at the
same time. If Super 8 fullcoat is run in both projectors, a
three-track blind mixdown can be accomplished.
The DoubleBand Projector can be used to dub new sounds
on fullcoat in sync with the picture. Its sync rollback capa-
bility allows concentration on just one short segment at a
ti
me. A short loop of picture, or original sound, can be run
in one projector for the repeated playings needed to achieve
a precise replacement of the original material.
The DoubleBand Projector is essential for classroom screen-
ing of student films while they are still at the editing stage.
Independent producers will want to screen sound and pic-
ture in sync for their clients before making final cuts in the
original film footage. Sync rollback capability permits easy
review of one shot or several scenes, without loss of sync.
The DoubleBand Projector is supplied with complete as-
sembly and operating instructions. It consists of two Eumig
S807 projectors and mechanical interlock connections. A
supporting table for one projector holds it above the other
so all recording and transport controls are easily accessible
from one side of the unit. DIN to RCA adapters are supplied
for the audio outputs. Specifications: 75-10,000Hz frequency
response, automatic record level control, 4 Watt amplifier,
monitor capability, wow less than 0.15%, flutter less than
0.2%, 12V75W dichroic tungsten halogen bulb with pre-heat,
f/1.6 17-30mm zoom lenses, 600 foot reel capacity.
The DoubleBand Projector can also be supplied with one
Bolex SP-80 Special projector and one Eumig S807. This combi-
nation has the same specifications except that it offers manual
record level control in the SP80 unit.
Super8 Sound DoubleBand Projector ........................................... DBPE807
(2 Eumig 5807)
Super8 Sound DoubleBand Projector .....................................
DBPBSP80
(1 Eumig 5807, 1 Bolex SP80 Special)
I
Super 8 Sound, Inc.
41
95 Harvey Street, Cambridge , Mass. 02140