Hello All,
I am fairly new to this site and still cannot PM anyone on this site. I am looking for schematics for Counterpoint Natural Progression Mono 150 watt amplifier. I see member CVANC might have schematics and/or operator's manual but this site will not allow me to start any communication with any members.
Also, hopefully someone may have a solution to my problem with both amps. They severely output a 60 Hz signal to speakers when in standby or warmup mode (not ground loop from A/C power source). When warmed up (LED lit blue), the 60 Hz decreases (still faintly audible) but the output signal is low to the speakers with the preamp volume set to high. One amp is distorted, the other amp just has a low output. After a few minutes of being in the "Operate" mode, it will automatically switch to warmup mode (LED lit red) and buzz loudly again for both amps... perhaps to fault mode? I bought these amps a month ago online as the seller stated they had no problems. The seller did give me a partial refund to hopefully pay for repairs. I would like to get these beautiful amps working as they sure have a nice build quality and I hope they sound as good as they look. If anyone has schematics and/or operator's manual or ideas on how to fix, I sure would be interested.
Kind Regards
I am fairly new to this site and still cannot PM anyone on this site. I am looking for schematics for Counterpoint Natural Progression Mono 150 watt amplifier. I see member CVANC might have schematics and/or operator's manual but this site will not allow me to start any communication with any members.
Also, hopefully someone may have a solution to my problem with both amps. They severely output a 60 Hz signal to speakers when in standby or warmup mode (not ground loop from A/C power source). When warmed up (LED lit blue), the 60 Hz decreases (still faintly audible) but the output signal is low to the speakers with the preamp volume set to high. One amp is distorted, the other amp just has a low output. After a few minutes of being in the "Operate" mode, it will automatically switch to warmup mode (LED lit red) and buzz loudly again for both amps... perhaps to fault mode? I bought these amps a month ago online as the seller stated they had no problems. The seller did give me a partial refund to hopefully pay for repairs. I would like to get these beautiful amps working as they sure have a nice build quality and I hope they sound as good as they look. If anyone has schematics and/or operator's manual or ideas on how to fix, I sure would be interested.
Kind Regards