Hey gang! I set up this stereo system for my workshop. Not exactly climate controled environment but also not directly outside. Basically large garage. The system worked fine for about the first year, then one day (while playing music) ALL the bass dropped out. Seems like the mids on both tower speakers are the only thing producing sound. Ive kind of abandoned it because I got a bt speaker that kind of does the job...but not like this setup. I run a bluetooth receiver (1/4" jack in aux port) to the amp, which run two sony tower speakers and thats it no other speakers. And just have it set on Left and Right speaker config. And play music from my phone. I keep the input volume maybe at about 70ish% and control output with my phone volume. I just recently swapped the 16g speaker wire with 14g electrical wire (dont laugh, its what i had laying around LOL)...works, but still dead at the tweeter and subs. Any thoughts as to why highs and lows are out?