Connectivity Issue with McIntosh C2800 and MX121 – No Sound in Front Channels

I think it is a 3.5mm  Mono plug.    I set my Dad's MA8950 up with an AVR and I'm pretty sure it was a Mono plug.   That is almost always the case with triggers 

Give McIntosh a  call to confirm.  They were really helpful the last time I called them.  

When you turn the MX 121 it's trigger should putthe preamp into Pass-through.  No other functions work, it will say "Passthrough", the input is now unity gain   and the surround  processor will control volume 

@oddiofyl 

"I think it is a 3.5mm  Mono plug."

I thought the same thing, but this the description of the McIntosh trigger cable they sell on their own website.

• Termination Connector

  Gold Plated 3.5mm Stereo Male

Thank you for the responses so far. I wanted to provide an update and further clarify my issue. I have both amplifiers connected with 3.5mm stereo cables, and they are working well together. However, there is still no sound coming from the front channels when using the MX121.

I live outside the United States and have been unable to create an account on McIntosh’s website to reach out for support. I’m not sure if they accept international calls, so I haven’t been able to contact them directly.

Any further suggestions on how to resolve this issue or how to best get in touch with McIntosh support from abroad would be greatly appreciated.

Thank you again for your help!

vinylnostalgic

... Any further suggestions on how to resolve this issue ...

Ask your local dealer. Most Mac dealers are very helpful.

The C2800 has to be set up for pass through in the menu system.  See page 11 in the owners manual.

 Cseledy; thanks I had followed the manual but no Sound yet 

Update:  an McIntosh technician, recommended using a different power control for the main amplifier  ( MC 252)  so I changed that to trigger one. 

When I turned on the Mx-121  nothing happened, but after 5 minutes the MC2800 turned on in passthrough mode and it turned on the  MC252 ( as it is supposed to be )  but a few minutes later it shut down.   I do not get it.

I will let you know if this can be overcome. 

Update:  an McIntosh technician, recommended using a different power control for the main amplifier  ( MC 252)  so I changed that to trigger one. 

When I turned on the Mx-121  nothing happened, but after 5 minutes the MC2800 turned on in passthrough mode and it turned on the  MC252 ( as it is supposed to be )  but a few minutes later it shut down.   I do not get it.

I will let you know if this can be overcome.