Wonderful, Paul.
I am so impressed with the beastie and your ability to use it! These are terrific graphs and we are all learning things along with you!
many, many thanks ( and to Ronald too! and Nick and James!)
James
1619 Triode Curves.
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Paul Barker
- Social Sevices have been notified
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- Joined: Mon May 21, 2007 9:42 pm
#32
Ronald is the star of the show, and also very interested behind the scenes in what is happening.
The error in usage I left in my post because any future users of the GUI can learn from my mistakes. I have no vested interest in my abilities, so to admit my imperfections helps us all.
I did already say to Ronald off the scenes I was about the most illiterate user of the GUI so shoudln't be the one to trial the new one.
I am still finding glitches with it, but there are people who have a better way of phrasing their words and sentences who can describe the situation better.
It may only be my ineptitude as above.
The new GUI needs longer int he field and brighter minds to play with it.
The error in usage I left in my post because any future users of the GUI can learn from my mistakes. I have no vested interest in my abilities, so to admit my imperfections helps us all.
I did already say to Ronald off the scenes I was about the most illiterate user of the GUI so shoudln't be the one to trial the new one.
I am still finding glitches with it, but there are people who have a better way of phrasing their words and sentences who can describe the situation better.
It may only be my ineptitude as above.
The new GUI needs longer int he field and brighter minds to play with it.
"Two things are infinite, the universe and human stupidity, and I am not yet completely sure about the universe." – Albert Einstein
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Alex Kitic
- Old Hand
- Posts: 369
- Joined: Mon Oct 14, 2013 3:20 pm
#33
In my opinion the 1619 is a sleeper tube, but in pentode mode.
I have previously made alterations to my RH807 amp to allow a friend to use them instead of 807s. Hum issues aside (direct heating AC on high efficiency speakers), the amp was a success and he further developed parafeed outputs, improving the sound further. The schematics can be found on the net if you Google it.
I was considering this tube as an alternative to relatively rare 307As for my RH307A amp, further improving on the residual hum with AC heaters thanks to the lower voltage. What seems to be an added bonus might be A2 operation.
Still, for some reason, people mostly consider the 1619 as a 45 replacement, which it definitely is not (heaters don't mean anything, to that regard the 2A3 would be almost drop-in for those old radios, as it's easier to replace the cathode resistor?
I have previously made alterations to my RH807 amp to allow a friend to use them instead of 807s. Hum issues aside (direct heating AC on high efficiency speakers), the amp was a success and he further developed parafeed outputs, improving the sound further. The schematics can be found on the net if you Google it.
I was considering this tube as an alternative to relatively rare 307As for my RH307A amp, further improving on the residual hum with AC heaters thanks to the lower voltage. What seems to be an added bonus might be A2 operation.
Still, for some reason, people mostly consider the 1619 as a 45 replacement, which it definitely is not (heaters don't mean anything, to that regard the 2A3 would be almost drop-in for those old radios, as it's easier to replace the cathode resistor?
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Paul Barker
- Social Sevices have been notified
- Posts: 8998
- Joined: Mon May 21, 2007 9:42 pm
#34
Yes Alex to all that you said.
If you want to have a play I could give you a matched pair.
If you want to have a play I could give you a matched pair.
"Two things are infinite, the universe and human stupidity, and I am not yet completely sure about the universe." – Albert Einstein
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Alex Kitic
- Old Hand
- Posts: 369
- Joined: Mon Oct 14, 2013 3:20 pm
#35
Thank you - tubes are always welcome - particularly when one has lots of ideas and few resources...Paul Barker wrote:Yes Alex to all that you said.
If you want to have a play I could give you a matched pair.
If you really wish to send me some tubes, please contact me via mail.
