Bose Lifestyle SA-1 User Manual download pdf (Page 3)

Streams

A Bose link enabled media center is also capable of managing two separate sources at the same

time. Each source can be sent to one of two different outputs - or ‘streams’ – within the Bose link

connection. 4 of the 9 pins that make up the Bose link connection on the back of the media are

responsible for delivering these streams – all of which are analog. Two pins are reserved for

stream 1 audio L/R (fixed), and another two pins carry stream 2 audio L/R (fixed) – (there is

another pair of pins that carry variable stream 2 audio that will be discussed later). Every Bose

link expansion product has 2 inputs to accommodate each stream, and the remote control tells the

device which stream to listen to. The expansion products receive fixed audio and then control

volume via commands they receive from the media center carried on other pins.

Here is an example. If an expansion remote configured for stream 1 sends an ON

command to the media center, the media center will activate the pins that carry stream 1

information. The media center will also call out to any Bose link product set to the same

room code as the remote. If the media center gets an answer it can understand, it will

respond by telling the expansion product to turn on and listen to its stream 1 inputs. If

the media center does not get a response from an expansion product set to the same room

as the remote it will simply turn itself off.

The main room, or room A, can only operate on stream 1. Although any of the expansion rooms

can be configured to operate on either stream 1 or stream 2, expansion rooms are generally

assigned to stream 2. Since only one source can be sent to each stream at any given time, keeping

Bose link expansion products on stream 2 prevents changes made in expansion rooms from

affecting what is being played in the main room, and vice-versa.

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Bose Lifestyle SA-1 User Manual Page 3