3.1
LOCATION, LOCATION, LOCATION ...
3.0
INSTALLING THE SDEC
18
Location, location, location…
(Please note that this installation guide assumes a U.S. location, in which the power source is 120 volt, 60Hz. JBL can
supply the SDEC for use in 230 volt, 50Hz environments on special order. Contact JBL for details and delivery information.)
Pick a location, determined by the relationship to other equipment and power availability. Note that there are NO user
controls on the SDEC: it need NOT be located where the user can easily reach it. Once programmed, it is turned On AND
Off by trigger signals from the Synthesis SDP-1, 2 or 2D, and, in turn, triggers the power amplifiers on and off. It can be
located close to the surround processor/decoder or close to the power amplifiers, although it should NOT be subject to
the heat they generate. For this reason, it may be better to locate it near the surround processor.
To simplify the following discussion, it will be assumed that the surround processor/decoder is a Synthesis SDP-2D,
although it may be an earlier SDP-1 or SDP-2. The SDP-1 is a Dolby
®
Pro Logic
®
decoder and control system, while
the SDP-2 incorporates the ability to decode AC-3
®
signals from DVD players or laser disc players equipped with RF
demodulators, such as the Synthesis SDP-RFD. The SDP-2D, the newest addition to the Synthesis family of controller/
processors, adds DTS decoding capability, while retaining AC-3 and Pro-Logic modes of operation. In subsequent
discussion, the word “controller” will be used to indicate the SDP-1, 2 or 2D, or whatever alternate equipment is being
used to select input sources and control power to ”downstream” pieces of signal processing equipment.
Frequently, the SDEC will be retrofitted to a Synthesis system previously equipped with an analog equalizer. It can
be mounted in place of the old equalizer and mode switching equipment, and will require considerably less space. A
minor amount of rewiring will be necessary. This is covered in CASE I, below. CASE II covers new installations of
Synthesis systems.
Summary of Contents for SYNTHESIS SDEC-1000
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