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Below is the block diagram for this.

9014 Datasheet, Equivalent, Cross Reference Search

The SS looks good as a replacement. The “6” can refer to even narrower Hfe dqtasheet by the factory. I have a bunch of KSC’s kicking around and wondered if they would work just as well? Oh, and I would obviously replace the pair.

Just remember, daasheet collector and base need to be crossed to match the original configuration. The schematic shows it like this with the voltages: Lots of DC at the speaker outputs, started testing caps, almost all out of specs and many dead.

I only bring this up, as there was a Sansui thread where the signal had reduced level on one side, and was cured by changing the c to c Cleaned all the pots and switches, still lots of static. Looking at the 2SC datasheet, its Ft is rather high at Mhz, so it’s not the average audio AF transistor, more like a tuning circuit transistor RF. Recapped the whole thing, sounds much better and a microvolt or two of DC at the speakers.

  ASTM F1717 PDF

Thanks for the replies. Oilmaster, I saw that SC you posted.

2sc datasheet & applicatoin notes – Datasheet Archive

That might very well be critical in this circuit, and therefore also stick with a SS sub. Your name or email address: It’s capacity is also low 2. No, create an account now. This circuit runs at very low collector voltage. In other words, a higher Hfe means that less current needs to be supplied by the upfront section aka higher Hfe provides higher input impedance The very linear Hfe-Ic curve of the also provides an excellent linearity of the buffer stage which benifits the distortion levels But the KSC should do fine here.

Like the Tek scope.

For all other parameters, the KSC is better. NAD80Nov 24, datashdet I see now that it is indeed the pre-amp section. Top grouping is the left transistor and bottom is the right. The digikey link for it is here https: Makes your life easier as well regarding legs Hfe is not much of issue here as long as it is aboveas this transistor is a “buffer stage” with at max a factor 10 amplification probably less than 5 Datashewt Hfe can sometimes be desired to “unload” the upfront circuit.


Then there is Hfe, bandwidth Ft, capacitance Cob and generated noise; which are either irrelevant or relevant, depending on its very application. So KSC should be good enough. Share This Datashest Tweet. It probably is a 2SC There are also BCc but are base centered.

Sorry so long but I found this real interesting and educational for me. How does RF play into this? Below are screen captures of the DCA pro traces.