Hi Frank,
Browsing old threads is a good thing, one never knows where interesting nuggets of information might pop up
Questions:
* That 35W operating point - what current/voltage does that consist of? I'm sure that'll also change the bias voltage, thus changing the requirements from the driver stage too?
* Compared to the more conventional 15W (60mA, 250V) operating point, how much would this shorten the life of the tube by? Any rough (or accurate) information?
* How does the sound of the tube change at this higher dissipation?
Thanks,
Saurav
Browsing old threads is a good thing, one never knows where interesting nuggets of information might pop up
Questions:
* That 35W operating point - what current/voltage does that consist of? I'm sure that'll also change the bias voltage, thus changing the requirements from the driver stage too?
* Compared to the more conventional 15W (60mA, 250V) operating point, how much would this shorten the life of the tube by? Any rough (or accurate) information?
* How does the sound of the tube change at this higher dissipation?
Thanks,
Saurav
Hi,
Saurav,
That would be 90mA @ 400VDC.
Yes, you'd better have a driver that can deliver the goods.
Roughly by a factor of two...not that I care much about that.
Don't know whether its' accurate, the tubes are rather too young to be able to forward more accurate predictions.
Pretty powerful for such a smal tube IMHO.Yummie...
Hi Sjef,
At the asking price it SHOULD a 300B and it could ...saves on tooling but then their 2A3 should show up on the plotter as a 300B...Anyone plotted one against the other?
And, they'd have to sound the same too, something 300Bs and 2A3s normally do not.
Either way it's a way overpriced tube which I won't even consider buying...there are still so many other fine sleepers around that I'd be building with before.
Cheers,
Saurav,
That would be 90mA @ 400VDC.
Yes, you'd better have a driver that can deliver the goods.
Roughly by a factor of two...not that I care much about that.
Don't know whether its' accurate, the tubes are rather too young to be able to forward more accurate predictions.
Pretty powerful for such a smal tube IMHO.Yummie...
Hi Sjef,
At the asking price it SHOULD a 300B and it could ...saves on tooling but then their 2A3 should show up on the plotter as a 300B...Anyone plotted one against the other?
And, they'd have to sound the same too, something 300Bs and 2A3s normally do not.
Either way it's a way overpriced tube which I won't even consider buying...there are still so many other fine sleepers around that I'd be building with before.
Cheers,
So that's about 50% over the current rating. The cathode can actually supply 90mA... interesting.
Do you think my CCS'd ECC99 would be up to that task?
So... that means the new life expectancy would be how long?
I was searching for more info on this today, and that seemed to be the consensus I came up against - just not enough information available to form a statistically significant opinion.
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