ive been toying around with a few op amps and transistor, attempting to make a small audio amp for the first time. i noticed on most (if not all) of the amp schematics on the net have a capacitor between the input signal and the first stage of the amp. So, i connected a cap (.1uF) in series with a sine wave signal from my sound card to the non-inverting input on my op amp, along with a 10K resistor from the non-inv to ground to bias at 0V. i ran the output of the op amp back to my soundcard to view the waveform. no matter what restistor/cap combo i used on the input the waveform became distorted at either extreme of the 20hz-15khz spectrum my sound card will sample. how would i go about avoiding this and still have some sort of DC blocking function on the input of my amp?
i appreciate it!
i appreciate it!