Need help with Jeff Rowland 201 monoblocks triggers

[PanheadXR290]

Hi folks,I've been into our hobby for 30 years ,the bulk of my years were spent running McIntosh and Krell gear until I recently heard ,then immediately fell in love with Rowland model 201 monoblocks of which I bought 3 with the option to buy 2 more tomorrow ,however ,I'm having a big problem getting the Rowland trigger to interface with the triggers on my McIntosh C-2500 tube preamp ,the Mc-1201 monoblocks ,the MCD-550 SACD/CD/Preamp and Mc-300 amp ,I've used the exact same trigger cords for my Emotiva XPR-1 Monoblocks and litteraly dozens of pieces of McIntosh gear without a hitch ,until now ,I have 3 of the 201s with a chance to buy another pair of those beauties tomorrow but I've gotta figure out this trigger system being incompatible before I get in any deeper ,any thoughts or pics of the exact cables I need to make the Rowland's turn in with the McIntosh trigger would be a massive help ,thanks guys .

 

[bazelio]

Congrats on the new find. Class D has gotten incredibly good. The question is very specific so I'd go to the manufacturer to get an answer.

 

[Mrdean]

I believe the normal home theater processor triggers supply 12V to turn on associated amps. And i think Jeff did this trigger differently. I think it takes a short to turn it on. If you have a spare 2 conductor 1/8” mini plug, you can check by shorting the 2 conductors. I had to deal with this situation with an Integra Pre-pro a decade or more ago. i think I had to use a cheap 12v relay,with the pre-pro trigger on the coil, and the 1/8 mini conductors on the Normally open contacts.

 

[Mrdean]

Here is the answer I got: If the jack is shorted, which means 0 volts, then the amp is in standby. If it is open or has 12 volts it will be on. So yes, the standby state would be 0 volts or shorted. The jack is normally high, or 12 volts.
So, since most pre-pros supply 12V on turn-on, you could use the “hot” pin to the coil of a relay, with ground on the other end of the coil. 201 trigger “hot” to the N.C. Contact, and ground the relay source.
Then again, the 201s are so efficient that you can just leave them on since they draw so little current.