Elrog 300B vs Takatsuki 300B tubes

Hi Jetrexpro,
 You have much hands on experience with parts and modifications (along with Grannyring and . Do you have any particular recommendations for cathode resistors?
Thanks,
Charles,

Charles, The 300b cathode resistor is actually one part in my amp that I have not changed so I have no experience how different brands would affect the sound. They have to dissipate lots of heat so are pretty large.  Maybe Grannyring or Salectric would have some experience. Also try the Audio Asylum Tube DIY thread for a good sounding 300b cathode resistor. My cathode resistor is pretty cool. It has various lead outs which give different resistances. The one time I noticed an improvement in sound was when I used to use Sophia Electric Mesh plate 300b tubes. I increased the resistance which lowered the stress on the Sophia Mesh and it did sound a bit better, so its possible with some tubes you may notice a sound change.

Hi Jet, The resistor needed is 1,2K ohms/10 watts. Yes, as you say raising the resistance(slightly in this case) lowers the "turn on" stress on the 300b.I'm looking forward to doing this and will see what happens. George  contacted me this morning and said I'll have a replacement sent in about 3 weeks. As usual he's right on top of things (utterly supportive).  I was told the brand of resistor isn't particularly important for this application. But I figure may as well go high quality, good parts always seem to make a difference even if only subtle sometimes.
Charles,

Charles1dad,
Really sorry to hear of your Elrog problem.; but isn't it great that folks like George provides solid support, Jetrexpro or Grannyring, or Salectric do provide sound advice along with that stalwart named Almarg...good luck. Best, Rob

Charles, I would suggest a resistor at least 20 watts in this position. The heat you are dissipating could be from 6 to 8 watts. For instance the original Joe Roberts WE91a schematic calls for a 50watt resistor in this position. You could also go with two Mills 2.4k 12 watt resistors in parallel. That would give you a 1.2k / 24w resistor. I believe a 10 watt resistor will be burnin hot and too close to its max tolerance.