I am getting some noise from my First Watt M2. It is noticeable on higher frequency compression drivers on a 800 hz. cutoff horn. So, the driver is VERY efficient and I don't think this noise would even be noticeable on typical efficiency speakers. But, high efficiency is what I use. I tried plugging the M2 into a power conditioner and no change. I don't think it's power supply hum, it's too high frequency. I also allowed the amp to warmup for several hours.
I have read about using a resistor and L-pad to bring amps up out of a noise floor. I do not know how to design this. Anyone tried anything like this with the M2? Any tweaks?
I love the amp and I fully embrace the zero feedback Class A design, so this is not a criticism in any fashion.
Cheers,
Jamie
I have read about using a resistor and L-pad to bring amps up out of a noise floor. I do not know how to design this. Anyone tried anything like this with the M2? Any tweaks?
I love the amp and I fully embrace the zero feedback Class A design, so this is not a criticism in any fashion.
Cheers,
Jamie