Search found 7777 matches

by Paul Barker
Tue Nov 30, 2021 8:42 pm
Forum: Assorted Stuff
Topic: The Audio-Talk Motorcycling thread.
Replies: 1165
Views: 293947

Re: The Audio-Talk Motorcycling thread.

Nice
by Paul Barker
Tue Nov 30, 2021 8:37 pm
Forum: Jokes
Topic: Jokes
Replies: 111
Views: 43521

Re: Jokes

andrew Ivimey wrote: Tue Nov 30, 2021 8:10 pm They really don't want customers...
I feel like that often!
by Paul Barker
Tue Nov 30, 2021 8:07 am
Forum: Everyones Projects
Topic: 801a amplifier
Replies: 101
Views: 5127

Re: 801a amplifier

So whats going to happen to poor Barbarick? who is sat in the dog house, sidelined by the new puppy. Barbaric will undergo a refit to a interstage phase split Sukuma style 801a push pull amp. As the top end is lacking It’ll get the Sowter PP transformers I bought from Dr John. Ive lost the phase spl...
by Paul Barker
Tue Nov 30, 2021 7:23 am
Forum: Assorted Stuff
Topic: Owston meet 27+28 Nov 21-add your name here
Replies: 173
Views: 4372

Re: Owston meet 27+28 Nov 21-add your name here

The Plutos? It was so wrong how right they sounded. Id have them happily!


They dont look at all right but their sound far excells over their looks, then, because they sound so good you settle that issue in youre thinking, and actually enjoy the fun look too!
by Paul Barker
Tue Nov 30, 2021 7:12 am
Forum: Everyones Projects
Topic: 801a amplifier
Replies: 101
Views: 5127

Re: 801a amplifier

That’s what I’m talking about. It’s quite different to anything SE dht that Ive built. The only reason I can think of is, the lack of 2nd harmonic distortion. Its kinda like listening to push pull directly heated triode. Until it gets into youre sole, youre listening for the usual SE dht inacuracy w...
by Paul Barker
Mon Nov 29, 2021 7:23 pm
Forum: Everyones Projects
Topic: 801a amplifier
Replies: 101
Views: 5127

Re: 801a amplifier

Thanks for filling in the details, sounds like something I want too. But I’ve a long way up a steep learning curve, I only know about valves and transformers. I’m having visual heaven at home I love this amp it’s rained these speakers it could tame anything. I just love the view. The excess choke in...
by Paul Barker
Mon Nov 29, 2021 11:58 am
Forum: Assorted Stuff
Topic: Owston meet 27+28 Nov 21-add your name here
Replies: 173
Views: 4372

Re: Owston meet 27+28 Nov 21-add your name here

Gordon is it you I thank for 3 motor run caps and 3 el34’s? (One had gas so didn’t take it.) The pipe effort looked wrong and sounded right. If any of my pathetic attempts sounded that good I’d be done. Can’t judge a book by its cover! Still waters run deep, I suspect you’re way out of my depth, tha...
by Paul Barker
Mon Nov 29, 2021 9:16 am
Forum: Everyones Projects
Topic: 801a amplifier
Replies: 101
Views: 5127

Re: 801a amplifier

Ray and I were togetherat VSAC was it in 2003? I know we all look a lot different, peoples films and stills of me at first eggborough show a much younger looking person without hardly any lines. But I saw this character 18 years on showing really deep analytical sort of conscentration interest in al...
by Paul Barker
Mon Nov 29, 2021 9:01 am
Forum: Everyones Projects
Topic: Poundland 45
Replies: 146
Views: 9251

Re: Poundland 45

I have never seen Steve do what I find is needed for regulated supplies, add a small resistor (say 5-10 ohm) feeding a high quality film cap (say 1uf) on the output to isolated the HF from the regulation. Just saying. The chip manufacturers used to show this on their suggested schematics. Possibly ...
by Paul Barker
Mon Nov 29, 2021 8:48 am
Forum: Everyones Projects
Topic: 801a amplifier
Replies: 101
Views: 5127

Re: 801a amplifier

Ray P wrote: Sun Nov 28, 2021 9:33 pm Good stuff Paul, I can picture you with a nice big grin now...
You know me well OB1
by Paul Barker
Sun Nov 28, 2021 6:10 pm
Forum: Everyones Projects
Topic: 801a amplifier
Replies: 101
Views: 5127

Re: 801a amplifier

I’ll take youre analysis, thank you Nick. Im going to see if I have any knickel laminations to fit these Hammond’s, possibly not , and they may have to parafeed, though perhaps with 15mA the Nickel lams will stand up to dc. I haven’t! No repeatable sources either. I bought my Niclel lams on eBay, no...
by Paul Barker
Sun Nov 28, 2021 4:44 pm
Forum: Everyones Projects
Topic: 801a amplifier
Replies: 101
Views: 5127

Re: 801a amplifier

Here is the data, showing as 3 watts but it’s two valves per channel, so 6 watts. Distortion profile showing less than 1/2 a percent. https://i.postimg.cc/mZPLngnc/5190-A1-E0-FFDE-4-C4-D-8148-E1416-BD93-C6-E.png https://i.postimg.cc/65R991tt/6-F661-FC2-52-C5-46-B2-8-A7-A-35-FDE765241-C.png https://i...
by Paul Barker
Sun Nov 28, 2021 4:33 pm
Forum: Everyones Projects
Topic: 801a amplifier
Replies: 101
Views: 5127

Re: 801a amplifier

This amp is so good I seriously might go into production and sell them through Dave. After Ive found current production valves of a quality not lacking.
by Paul Barker
Sun Nov 28, 2021 4:29 pm
Forum: Everyones Projects
Topic: 801a amplifier
Replies: 101
Views: 5127

Re: 801a amplifier

Bartoli Valves, quoting Andy Evans, who I dont know, understated the phsing issue of Hammond IT’s. It copletely ruins the sound, they should come with a HMgov warning like bacca!

They are grossly wrong out of phase!

Which makes you look a pratt at Owston!