Thane

Hey Mr. Klipsch amp expert. I have 2 of these plate amps off of wireless Klipsch subs. Both work but are not very loud.. They both seem to have the exact same problem. The power supply is only outputting 15 or so volts but it should be closer to 35 based on what is printed on the board.. I replaced the caps on one before I found this post. Other than removing all the yellow glue where would you start looking? Thanks in advance.