Boston Acoustics LCAi220 manual System 3 Complex Configuration Whole House Audio Diagram, Zone

System Diagrams (cont.)

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.

Zone 1					Zone 2
TV (local source)					TV (local source)
	LCAi220 (external connections)					LCAi220 (external connections)
			16VDC	SUB				16V	SUB
	SPEAKER OUT SPEAKER IN		IN	OUT		SPEAKER OUT SPEAKER IN		IN	OUT
LCAi220	+ - - +	+ - - +	+ -	+ -	LCAi220	+ - - +	+ - - +	+ -	+ -
(in-wall connections)					(in-wall connections)

Zone 3

TV (local source)

LCAi220 (external connections)

				16V	SUB
		SPEAKER OUT SPEAKER IN		IN	OUT
LCAi220	+ - - +		+ - - +	+ -	+ -
(in-wall connections)

RVC90i

Volume

Control

RVC90i

Volume

Control

RVC90i

Volume

Control

Local Speakers

Local Speakers

Local Speakers

LCApi

(One included w/each LCAi220)

16VDC

Power Supply

(One included

w/each LCAi220)

Central Music Source (Room 2 output) In-Wall Subwoofers

RVC90i

Volume

Control

RVC90i

Volume

Control

RVC90i

Volume

Control

Zone 4 Zone 5 Zone 6

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