Ryssen - we will never know as of Icsaszars testimony of use in Migs. To avoid any political claims - we will simply never be told of the 6N28B-V's reliability in Mig's. If it was a military tube there might be sparse private claims of the reliability which of course if they are for sale is to good to be true!
Physics are about compromises - no free lunches an so on!
But they might do well in a phonamp though - first gain atleast 20dB - after that - choose yer favourite mm phono circuit and use the pre-pre instead of a sut.
Regards
Physics are about compromises - no free lunches an so on!
But they might do well in a phonamp though - first gain atleast 20dB - after that - choose yer favourite mm phono circuit and use the pre-pre instead of a sut.
Regards
6n28b tubes are longlife tubes 2000 till 10000 houres.
Gain should be around 16 times.
Just right for 0,3mv MC cartridge. Then use MM tube preamp of your choice.
Gain should be around 16 times.
Just right for 0,3mv MC cartridge. Then use MM tube preamp of your choice.
I tried both Nuvistors and those pencil tubes, but at the end I found ordinary noval tubes better for the purpose.
No I don't have it any more. From memory it was a common cathode amplifier with two parallel sections, 10k anode load, no cathode resistor (0V grid voltage), supply voltage not sure, perhaps 150V.
I just won 2 Valvo ECC86 on ebay,pretty cheap to..for future experiments.
Maybe the Valvos ain´t no good,as they where cheap?
they where said to be new..
Maybe the Valvos ain´t no good,as they where cheap?
they where said to be new..
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