What is a NSA amp

[patra710]

I have been working on a SX-3800 and on the forums here they call it a NSA amp. I goolge it but found nothing on it. What is it?

 

[macgolf]

I believe it stands for non-switching amplifier,

 

[patra710]

Thanks, it has been driving me crazy

 

[markthefixer]

It means it splits the signal into positive and negative going halves, when that isn't done, the transistor on the opposite side of the push pull output driver for that polarity is inadvertently "switched off" by the waveform, and when the driving side / polarity is swapped (audio signals swing positive and then negative) and that transistor is supposed to be ON already, it takes time to "wake it up", causing some distortion.

 

[sregor]

http://www.audiokarma.org/forums/index.php?threads/pioneer-tuning-fork-service-guide.249745/page-2 post #36

 

[patra710]

Thanks guys

 

[patra710]

I need to do some reading. It has been 25 years since tech school and everything after that was board level or even machine level. Out with the old, in with the new.