Just completed my installation and flew a trip last week and love the system! At the time of installation I thought I'd try the system without the audio hooked up . I had time today and picked up the Radio Shack variable resistor and installed it. I'm using a D10a and the AP74 controller for the autopilot. I used the audio output line from the AP74 to send audio to my KMA 24 audio panel. The test mode using the D10a menu works good thru the headsets....haven't flown it yet due to weather here..SO....here's my question...what alerts will I hear other than "autopilot disconnect" using the AP74 audio output only? Looks like you can parallel the audio out with the D10 ,which I did not do. Hoping to get altitude alerts and climb/descent tones with it wired to the AP74 audio out only. Thanks.