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    Norman Koren Spiced PAS schematics difference.



    Posts : 11
    Join date : 2018-02-26

    Norman Koren Spiced PAS schematics difference.

    Post by starwatcher on Mon Mar 05, 2018 2:09 am

    I was ready to buy Norman Koren PAS boards from classic valves but the line board is sold-out.

    I can manage a point to point circuit but i notice the C out capacitor is 3.3uf on Koren website and .47uf on the part list of Classic valves.

    I also see there's few different resistor so i can use one or the other schematics with the same results?


    Posts : 54
    Join date : 2013-07-13
    Location : Rochester NY

    N Koren question

    Post by WLT on Fri Mar 09, 2018 12:12 pm

    I am building a phono preamp using the NK board. Not to be completed any time soon but it will get done.

    The question about C out. The larger cap is preferred if you have a long length of interconnect cable to the amp or are using low input impedance amps (solid state). If you use tube amps with large input grid resistors (475K +/-) the smaller caps are just fine. That cap, the cables and the input resistance set up a filter that can effect the low frequency of the system. You could always try each one and see what if any difference there is.

      Current date/time is Sat Dec 15, 2018 6:23 am