Tag: 6Э6П-E

6Э6П-E and 6Э6П-ДР datasheets

Thanks to Vyacheslav Kalashnikov who kindly did all the work here so here are the translated 6E6P-E/6Э6П-E and 6Э6П-DR/ 6Э6П-ДР datasheets:

6E6P-DR6E6P-E и 6E6P-DR

Looking at the 6Э6П-DR/ 6Э6П-ДР, there is a minor difference in the transconductance and anode current variance. Also the heating requirements are less demanding. Interesting to see though, is the fact that the 6Э6П-ДР grids can handle a bit more of extra power.

The proof is in the pudding, so we need to test the sound differences amongst these two valves and 6E5P/6Э5П!

 

6E5P/6Э5П and 6E6P-E/6Э6П-E in triode mode

One of the first valves I traced with my curve tracer was the 6E5P/6Э5П. It has a very good reputation when triode-strapped. I did many tests and found this one being a superb driver given is one of the most linear valves out there. Many use them as a 300B driver. I will probably implement Rod Coleman’s shunt cascode topology in my 45 SE or in a 6C4C/4P1L PSE design.

Over the weekend I traced many valves as managed to recalibrate the oscilloscope and tracer and wanted to play with some samples I had around.

Here is the 6E5P/6Э5П in triode mode:

65ep triode SMALLAnd here are the updated SPICE model parameters:

6e5p triode modelNow, let’s have a look at it’s close brother the 6E6P-E/6Э6П-E in triode mode. It has a long life (10,000 hours against only 500hours):

6e6p-e triode SMALL

6e6p-e triode modelMany praise the 6e6p-DR tetrode over these two, I haven’t tried it yet myself but here are the minor differences between  6E5P/6Э5П and 6E6P-E/6Э6П-E to highlight:

  • Both 6E5P/6Э5П and 6E6P-E/6Э6П-E have very linear curves!
  • 6E5P/6Э5П: less anode resistance and higher transconductance compared to  6E6P-E/6Э6П-E which seems to have a tad more of gain