Bose Lifestyle SA-1 User Manual download pdf (Page 4)

“A” Cables vs. “B” Cables

There are two types of Bose link cables available to end consumers – “A” cables and “B”

cables. Each cable uses circular 9-pin connectors on either end. The difference between

the two types is in how they are wired. “A” cables contain 9 wires that correspond to

each of the 9 pins on the connector. Here is a detail of what each pin carries:

Bose Link A Cables

1. Variable Stream 2 Left

2. Variable Stream 2 Right

3. Fixed Stream 2 Left

4. Fixed Stream 2 Right

5. Fixed Stream 1 Right

6. Turn On (this is a 10v turn on signal that some

expansion products require)

7. Data (this carries volume, on/off and local source

commands)

8. Ground

9. Fixed Stream 1 Left

“B” cables have only 6 of the 9 pins wired. The two pins that carry variable stream 2

information and the one pin that carries the 10v turn on voltage are not wired.

Bose Link B Cables

1. Not Wired

2. Not Wired

3. Fixed Stream 2 Left

4. Fixed Stream 2 Right

5. Fixed Stream 1 Right

6. Not Wired

7. Data (this carries volume, on/off and local source

commands)

8. Ground

9. Fixed Stream 1 Left

The need for two different wires is due to the Wave Music System and the Wave Radio II.

To power the IC-1, these systems utilize pin 6 to send out the voltage required.

Connecting a Bose link A cable to a WMS would mean that you were connecting the

outputs of two different power sources together. This would likely cause some type of

damage. Variable stream 2 wires were also omitted because they are never used by a

Bose link device (more on variable stream 2 below).

The 4-way Bose link 50’ extension cables are wired as “A” cables. All Bose link cables

are capable of delivering a signal up to 150’ feet from the media center. If a “B” cable is

connected anywhere in the path between two devices, the run will act as a “B” cable run.

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Bose Lifestyle SA-1 User Manual Page 4