After reading the positive reviews about MrRcsound, I purchased the Aspire sound card with 1 tt-25 transducer.. I installed it in my 1400 Cessna and before flying my plane tested the system using a 3s 3000mAh lipo. Sounded great. At the field, I flew the plane taking note that the sound was very impressive. Landed, changed batteries and took off again. During mid fight the sound stopped. Thinking it might be a bad connection I landed. All connections were solid. I quickly discovered that the warning on the transducer about it being hot was an under statement. It was McDonaldds coffee spilled in my lap HOT! Removing the transducer from the mount I noticed that the round metal disk in the transducer was displaced. A nudge with my finger put it back into place. Still no sound. When I power up the Aspire it does not initialize as it did before with no sound.. 2 lights on the card light up. So I have concluded that the transducer is at fault. MotionRC is sending me a free replacement TT-25. Has anyone had any similar issues with this system? Hopefully, the problem does not lie with the card itself.