SP Controls SmartPanel - Manual (Page 40)

Page 36 SmartPanel Configuration and Installation Guide
www.spcontrols.com © 2002-8 SP Controls, Inc. 930 Linden Ave. So. San Francisco CA 94080
When you need the Preamplifier
You must purchase and install the Preamplifier if your installation calls for an external audio
solution. Two external audio solutions with which the Preamplifier can be used are:
x self-powered speakers, and
x an external amplifier paired with speakers.
Note: The Panel chassis has no means of controlling volume itself; the Preamplifier is offered as
an option to give you more installation choices. This is appropriate as many installations do
not need anything but the projector’s audio system.
GAIN BASS TREBLE
LEFT
RIGHT
INPUT 2
UNBALANCED LINE
LEVEL
GAIN BASS TREBLE
LEFT
RIGHT
INPUT 3
UNBALANCED LINE
LEVEL
GAIN BASS TREBLE
LEFT
RIGHT
INPUT 4
UNBALANCED LINE
LEVEL
LEFT
RIGHT
INPUT 5 (AUX)
UNBALANCED LINE
LEVEL
COMPOSITE or S-VIDEO VIDEO 1
COMPOSITE or S-VIDEO VIDEO 2
COMPOSITE VIDEO
VIDEO 3
(composite only)
COMPOSITE VIDEO VIDEO 4
(composite only)
5 x 1 STEREO AUDIO SWITCHER
VIDEO OUT
LEFT
RIGHT
4 x 1 COMPOSITE
or
2 x 1 S-VIDEO
SWITCHER
CONTROL
BALANCED or
UNBALANCED LINE
LEVEL
LEFT
RIGHT
INPUT 1
UNBALANCED LINE
LEVEL
TREBLE
GAIN BASS TREBLE
MIX INPUT
BALANCED LINE
LEVEL
(MIX INPUT is not attenuated, switched or equalized)
VOLUME
CONTROL
BALANCED
SUM
Figure 16: Functional block diagram of the SP3-AFVP+ Audio Follow Video Preamplifier