MoJo
Well-known member
Hi Everyone,
I replaced all of the transistors that I put in wrong in all 3 boards, and now I can set the BA283 bias calibration to 2.3VDC.
I could not successfully perform the next calibration (step 6 - unity gain calibration). I fed in the 1kHz signal and recorded the output signal. Here are my results:
1) The recorded signal is exactly the same as the input signal when the 'Compress" switch is in the On position; turning any of the knobs does not have any effect on the recorded signal..
2) When the "Compress" switch is in the Off position, I only get a recorded signal if the Gain knob is turned all the way up, but the signal is very low in volume.
3) The meter is not moving at all.
Any ideas on how I can troubleshoot this?
I replaced all of the transistors that I put in wrong in all 3 boards, and now I can set the BA283 bias calibration to 2.3VDC.
I could not successfully perform the next calibration (step 6 - unity gain calibration). I fed in the 1kHz signal and recorded the output signal. Here are my results:
1) The recorded signal is exactly the same as the input signal when the 'Compress" switch is in the On position; turning any of the knobs does not have any effect on the recorded signal..
2) When the "Compress" switch is in the Off position, I only get a recorded signal if the Gain knob is turned all the way up, but the signal is very low in volume.
3) The meter is not moving at all.
Any ideas on how I can troubleshoot this?