45 SE
- Paul Barker
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#121 Re: 45 SE
Yes they sounded great 20 years ago when I last rectifier rolled, the potato masher 5R4’s were second to them other 5R4’ 3rd in line. I had to start using U19’s for the amps I was making there after. Going back to low powered SE now.
"Two things are infinite, the universe and human stupidity, and I am not yet completely sure about the universe." – Albert Einstein
- Paul Barker
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#122 Re: 45 SE
U19 also direct heated. Never let me down on sound.
To repeat a point, never killed any of those rectifiers and they’ve seen work extreme.
To repeat a point, never killed any of those rectifiers and they’ve seen work extreme.
"Two things are infinite, the universe and human stupidity, and I am not yet completely sure about the universe." – Albert Einstein
#123 Re: 45 SE
I killed the first U19's I tried because I didn't let them warm up before putting 1500v across them,
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
- pre65
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#124 Re: 45 SE
I've got a few new old stock U19's if anyone is interested.
The only thing necessary for the triumph of evil is for good men to do nothing.
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
- Cressy Snr
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#125 Re: 45 SE
Madness
Don’t panic! Even I wouldn’t be that daft. It made a fun picture though.
Sgt. Baker started talkin’ with a Bullhorn in his hand.
- Cressy Snr
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#126 Re: 45 SE
Revised schematics, following 11th June meeting at Steve's
Sgt. Baker started talkin’ with a Bullhorn in his hand.
#127 Re: 45 SE
Not sure an ECC81 is ever going to need a grid stopper.
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
- Cressy Snr
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#128 Re: 45 SE
I just like a bit of belt and braces as it is quoted as an RF double triode for use as an oscillator, mixer or amplifier for TV circuits. I can soon take it out and have one less component in the signal path.
Sgt. Baker started talkin’ with a Bullhorn in his hand.
- izzy wizzy
- Old Hand
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#129 Re: 45 SE
I think it's a good move. You wouldn't at this stage be wanting to chase a problem or the sound turning south for the want of a grid stopper.Cressy Snr wrote: ↑Wed Jun 16, 2021 7:09 pm I just like a bit of belt and braces as it is quoted as an RF double triode for use as an oscillator, mixer or amplifier for TV circuits. I can soon take it out and have one less component in the signal path.
It can always go when you get the urge to fiddle again ...... say ..... in about a day or so
- andrew Ivimey
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#130 Re: 45 SE
Ecc81 indeed. What's wrong with 6sn7gtb, choke loaded 76,or 26..... argh. Plenty of mileage!
Philosophers have only interpreted the world - the point, however, is to change it. No it isn't ... maybe we should leave it alone for a while.
- Cressy Snr
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#131 Re: 45 SE
So many permutations so little time. But I’ve landed on something I like.andrew Ivimey wrote: ↑Wed Jun 16, 2021 9:47 pm Ecc81 indeed. What's wrong with 6sn7gtb, choke loaded 76,or 26..... argh. Plenty of mileage!
Sgt. Baker started talkin’ with a Bullhorn in his hand.
- IslandPink
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#132 Re: 45 SE
Says the man with a powerful pre-amp !andrew Ivimey wrote: ↑Wed Jun 16, 2021 9:47 pm Ecc81 indeed. What's wrong with 6sn7gtb, choke loaded 76,or 26..... argh. Plenty of mileage!
"Once you find out ... the Circumstances ; then you can go out"
- andrew Ivimey
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#133 Re: 45 SE
Where would we be if everyone did what I have done...doesn't bear thinking about.
Philosophers have only interpreted the world - the point, however, is to change it. No it isn't ... maybe we should leave it alone for a while.
- shane
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#134 Re: 45 SE
Bedford, I suppose.
The world looks so different after learning science. For example, trees are made of air, primarily. When they are burned, they go back to air, and in their flaming heat is released the flaming heat of the Sun which was bound in to convert air into tree.
- pre65
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#135 Re: 45 SE
The only thing necessary for the triumph of evil is for good men to do nothing.
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)