[canucks0]

I'd like to use my McIntosh MX120 processor to power up some Bryston amps. The Mc power triggers use a 1/8" stereo microphone cable which carries 3 wires in it. The amps that its trying to power on (7B SST2's and a 6B SST2) uses a removable connector block which two wires are put into and screwed down (the IN terminals). There are also OUT terminals to daisy chain the power triggering. So, my question is, with 3 wires with a 1/8" stereo microphone cable (1 red, 1 white and a bare one), how would I connect it into a connector block with TWO "IN" terminals? Thanks. Dave.

[Phil A]

When I had a non-Bryston processor with a Bryston amp I just went to Radio Shack and got the mini-jack connector and some thin wire and just connector the tip to one wire and the outer case to another and then just hooked the two wires into the Bryston amp

[Phil A]

This is probably more descriptive (than my poor attempt) of the mini-jack connections.

http://www.docstoc.com/docs/23480938/How-to-wire-a-stereo-device-such

[Wayner]

This is actually what is called a "digital" signal in the electrical engineering circles. Digital, because it's either on or off. When the amp sees a 12 volt signal, it trips an internal relay, which fires up the amp. When the 12 volt signal is removed, the relay goes back to it's normally open condition and shuts off the amp.

The 3 wire mini-jack from your Mac may have 2 circuits in it,,,,I just don't know. But as Phil suggested, the tip should be hot (+12 volts) and the outer sleeve common. If you are unsure, take a volt ohm meter and set it to the 20 volt range and have the Mac send the 12 volt on signal and see if it's there. If for some odd reason Mac decided to put the common on the tip (?) your VOM (if digital readout) will have a minus (-) sign in front of it. I think the tip, however, will be +12 volts. Then, when everything is understood, you should be able to power your Bryston amp with the Mac.

Good luck

Wayner