6
the first set of digital inputs will be set for DTS lev-
els. If you hook a DA20 up to the first set of digital
inputs (i.e., you are connecting to the first or only
DB25 on the DM6), you will probably have to ad-
just the Sub-Bass level upward (using the Sub-Bass
trimpot on the DM6 Input Switching Card) to
accomodate the lower Sub-Bass level from the
DA20.
If you must make adjustments to the factory set-
tings on the DM-6, then use the trimpots on the
INPUT SWITCHING card first. The top row of
trimpots is for the DTS DB25 inputs, and the bot-
tom row of trimpots is for the DIGITAL INPUTS ter-
minals. If this still does not give proper levels, then
use the OUTPUT card trimpots to get additional
range of adjustment.
source to the DM-6 signal path. It also contains
trimpots to adjust the signal levels if needed. These
trimpots will not normally require re-adjustment
from the factory settings except for the Sub-Bass
level as mentioned in the SETUP section.
Equalizer Card
The card shown is the full octave EQ card. Please
note that only the top half of the card is used for the
stage channels. Both top and bottom sections are
used for the split surrounds. The top is Left Surround
and the bottom is Right Surround. This same card is
also used for the optional SubBass EQ, but fewer
parts are installed. Optional 1/3 octave EQ cards
may be installed for stage channels.
Output Card
This card contains the VCAs and output gain stages.
The trimpots are used to vary the output signal lev-
els which will feed the power amps. Do not adjust
these unless the digital processor level controls will
not give sufficient level. If necessary, set these while
the test disk or film is running to achieve the film
level recommended by the digital processor manu-
facturer.
Input Switching Card
This card receives the six audio channels from the
digital processors and switches the appropriate
The optional
sub bass
equalizer card
allows
smoothing of
the subwoofer
system
seperately
from the stage
channel
equalizers.
Dual one octave EQ card for split surround channels. Top set of pots
is Left surround channel. Frequencies are printed on the edge of the
card for each band.
Special factory made 3 foot cords are
available for the DTS 6-channel system
and the Dolby DA20 Digital. These cords
have a pre-wired DB 25 on one end and
fit the specific digital decoder on the
other end. All control and audio signals
are carried by the cord, and no additional
wiring is required. These cords may be
ordered by your SMART dealer. Cords
may be extended, when extra length is
required, by purchasing a standard com-
puter cable with a DB25 on each end.
Make sure the cord has all pins wired.
Some computer cords do not.