connecting s609 changer to 7909?

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Early high end M-bus components run the audio signal outside the M-bus cable; this allows (forces) you to use a RCA cable in conjuction to the M-bus cable. In order to combine a standard M-bus (or in your case an AI-net adapated) source to something line the 7909 you need an Alpine 4913 adaptor which converts the M-bus to M-bus + RCA. You can accomplish the same thing by simply pulling the source wires from the M-bus cable and soldering them to a pair of RCAs at either end of the M-bus cable. As a long time Alpine collector, I happen to have a spare 4913 if you're interested, just PM me. You might also find a 4913 on eBay, they come up from time to time and don't sell for much.
 
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