Boston Acoustics LCAi220 - Manual (Page 10)

9
System Diagrams (cont.)
SPEAKER OUT SPEAKER IN 16VDC IN SUB OUT
+ - - + + - - + + - + -
12V Trigger / Video Pass Through
12V Trigger / Video In
SPEAKER OUT SPEAKER IN 16VDC IN SUB OUT
+ - + -
12V Trigger / Video Pass Through
12V Trigger / Video In
SPEAKER OUT SPEAKER IN 16VDC IN SUB OUT
+ - + -
12V Trigger / Video Pass Through
12V Trigger / Video In
Zone 1
Zone 4 Zone 5 Zone 6
Zone 2 Zone 3
+ - - + + - - + + - - + + - - +
TV (local source)
LCAi220 (external connections)
LCAi220
(in-wall connections)
Local Speakers
LCApi
(One included
w/each LCAi220)
TV (local source)
LCAi220 (external connections)
LCAi220
(in-wall connections)
Local Speakers
RVC90i
Volume
Control RVC90i
Volume
Control
RVC90i
Volume
Control RVC90i
Volume
Control RVC90i
Volume
Control
TV (local source)
LCAi220 (external connections)
LCAi220
(in-wall connections)
Local Speakers
In-Wall Subwoofers
RVC90i
Volume
Control
Central Music Source (Room 2 output)
16VDC
Power Supply
(One included
w/each LCAi220)
System 3; Complex Configuration - Whole House Audio Diagram
The system below uses six separate zones. Three of the zones use Boston LCAi220 Local
Control Amplifiers powered from a central location. Each Zone uses a Boston RVC90i for
volume control of the local speakers while providing the necessary impedance protection for
the central source amplifier (the Room 2 output of the Boston AVR7120 receiver). The output
from the receiver is sent through a Boston CB8 distribution block out to all six zones.
Zones 1-3: In each zone, the audio signal is sent from the Boston CB8 to a Boston RVC90i
volume control. The Boston RVC90i provides volume control for the local speakers when the
LCAi220 is in bypass mode. Each Boston LCAi220 is connected to a television; this is the local
source for each zone. The local source is triggered via an RCA video output from the TV to the
12v Trigger/Video In located on the front of the Boston LCAi220. Zone 3 adds a subwoofer
system (Boston SA1 subwoofer amplifier and a pair of Boston VRiSub82 subwoofers) for more
bass.
Zones 4-6: Each zone is powered off of the Room 2 output of the AVR7120. The Boston RVC90i
volume controls provide volume control and impedance matching for each specific zone.