| Electronics > Repair |
| Pics of 20Hz, 1KHz, 20KHz amplifier signal. Why is the signal shape different? |
| (1/3) > >> |
| olegau:
It seems to me that the waveform should not change from 20 to 20,000 hertz, but my Yamaha CA-700 amp shows distortion at 20 and 20,000 hertz. Who knows, maybe this is normal? |
| __greg__:
just use sine test signal. for square signal it is "normal" and will vary depending on settings for bass/treble knobs.... |
| RoGeorge:
This forum is for writing in English only, please use a translator and post your questions in English. |
| olegau:
Yes, I believe the amp is in good working order. The sinus signal is fain. A good site: https://sound-au.com/articles/squarewave.htm |
| Haenk:
Maybe filter caps? Work through the service manual is your best option: https://elektrotanya.com/yamaha_ca-500_ca-700_amplifier.pdf/download.html |
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