Search found 8991 matches
- Mon Apr 15, 2024 7:36 am
- Forum: Everyones Projects
- Topic: 45 SET
- Replies: 155
- Views: 34387
Re: 45 SET
Who can hear the difference between 2 watt and 1.44 watt, but maybe reducing 2nd from 7% to half is the biggest improvement you could make. Forget boutique components, this is measurable science. This is what the different loadlines look like. Getting better all the time. Biggest improvement you cou...
- Mon Apr 15, 2024 6:37 am
- Forum: Everyones Projects
- Topic: 45 SET
- Replies: 155
- Views: 34387
Re: 45 SET
Here is an interesting thing Simon. Normal high 2nd of loved dht’s single ended. Zero 3rd. Is that the magic? So in theory you could build it push pull, wipe out the 2nd and not suffer 3rd. That ought to sound better, only in the case of the 45. Which means I need to build a push pull 45 amp. https:...
- Mon Apr 15, 2024 4:58 am
- Forum: Everyones Projects
- Topic: 45 SET
- Replies: 155
- Views: 34387
Re: 45 SET
We get that in Gas work as well Simon. Ive enjoyed music u der the influence when I was a nurse where we weren’t random tested. You do stupid things like buy speKers that in the cold light of day are horrible . But addiction in nursing isn’t uncommon often its their way of facing the job. I recall t...
- Sun Apr 14, 2024 9:18 am
- Forum: Everyones Projects
- Topic: 801a amplifier
- Replies: 134
- Views: 63382
Re: 801a amplifier
Picking this up again. It turned out the failure was an output transformer. So now the Tributes come into play as 10k with a single valve single ended 801a amp with 20 volts into A2. Having explored distortion in 2 to 5 watts SE designs, even in A2 this amp is best next build but with single output ...
- Sun Apr 14, 2024 9:02 am
- Forum: Everyones Projects
- Topic: EL36 SE Triode from ETF 2006 build
- Replies: 10
- Views: 435
- Sat Apr 13, 2024 9:31 pm
- Forum: Everyones Projects
- Topic: Distortion 2 to 3 W DHT,IDHT,Multigrid idht.
- Replies: 17
- Views: 675
- Sat Apr 13, 2024 9:27 pm
- Forum: Everyones Projects
- Topic: Distortion 2 to 3 W DHT,IDHT,Multigrid idht.
- Replies: 17
- Views: 675
- Sat Apr 13, 2024 7:44 pm
- Forum: Everyones Projects
- Topic: EL36 SE Triode from ETF 2006 build
- Replies: 10
- Views: 435
Re: EL36 SE Triode from ETF 2006 build
This is what Stephie said about the negative in his example 3rd
“Notice the minus sign. This indicates that the harmonic content subtracts from the fundamental (flattening it) when the fundamental is at its crest. This *usually* happens on third harmonic distortion in tubes.”
“Notice the minus sign. This indicates that the harmonic content subtracts from the fundamental (flattening it) when the fundamental is at its crest. This *usually* happens on third harmonic distortion in tubes.”
- Sat Apr 13, 2024 2:57 pm
- Forum: Everyones Projects
- Topic: Distortion 2 to 3 W DHT,IDHT,Multigrid idht.
- Replies: 17
- Views: 675
Re: Distortion 2 to 3 W DHT,IDHT,Multigrid idht.
In my book the EL34 wins.
- Sat Apr 13, 2024 2:48 pm
- Forum: Everyones Projects
- Topic: Distortion 2 to 3 W DHT,IDHT,Multigrid idht.
- Replies: 17
- Views: 675
Distortion 2 to 3 W DHT,IDHT,Multigrid idht.
Right, its getting surprising. Ive probably given up on repurposed sweep tubes. But now, as the EL34 sounds so great at 2.1 watts Ive drawn up the distortion camparrisons of three valves of which you’d expect the dht’s to win. https://i.postimg.cc/xdNLvBzW/IMG-1236.jpg https://i.postimg.cc/cLBq9F8C/...
- Sat Apr 13, 2024 1:23 pm
- Forum: Everyones Projects
- Topic: EL36 SE Triode from ETF 2006 build
- Replies: 10
- Views: 435
Re: EL36 SE Triode from ETF 2006 build
Yes Steve Im going off the EL84 aswell. But the EL34 at 2.1 watts is a keeper. Its the winner of this excercise. I see no point building an amp loaded with odd order distortion. I cant go out so I’ll play with other characteristic curves at 2 watts. Its a shame I dont think I can get more than a wat...
- Sat Apr 13, 2024 1:13 pm
- Forum: Everyones Projects
- Topic: EL36 SE Triode from ETF 2006 build
- Replies: 10
- Views: 435
Re: EL36 SE Triode from ETF 2006 build
So I shifted the EL36 operating point to 2.3 watts and to highest current I could, also pushed dissipation up to 20w limit; the 3rd h distortion speaks for itself. https://i.postimg.cc/152zYVG2/IMG-1237.jpg https://i.postimg.cc/6pZQs6z3/IMG-1238.jpg I don’t see a 300b challenger. This will not be th...
- Sat Apr 13, 2024 12:03 pm
- Forum: Everyones Projects
- Topic: EL36 SE Triode from ETF 2006 build
- Replies: 10
- Views: 435
Re: EL36 SE Triode from ETF 2006 build
I’m sorry I was struggling with the 3rd harmonic distortion formula, so went back to Stephies teaching on distortion, read it multiple times, added 4th harmonic so I now have a spreadsheet that calculates 2nd 3rd and 4th. Stephie explains the negative figures. They are not a calculation error. I gue...
- Fri Apr 12, 2024 6:04 pm
- Forum: News
- Topic: Diana’s PIP has been approved
- Replies: 10
- Views: 610
Re: Diana’s PIP has been approved
Ah, so I could claim pension tax credits if I don’t work. I probably will.
- Fri Apr 12, 2024 2:28 pm
- Forum: News
- Topic: Diana’s PIP has been approved
- Replies: 10
- Views: 610
Re: Diana’s PIP has been approved
I get more than £81 state pension so “you will not get any carers allowance”
So that wont be claimed and as before its better to work.
So that wont be claimed and as before its better to work.