Search found 8318 matches

by andrew Ivimey
Mon Oct 05, 2009 5:32 pm
Forum: Everyones Projects
Topic: 26 pre-amp
Replies: 473
Views: 93085

Yep that looks sweet ! and I'm jealous of your nifty use of that WD PSU box - neat.

Now let's keep things simple and n.b. all things (including pain <and pleasure>) pass - don't try to hang onto things. They come, they go. And so do we!

And if it still hums, hit it with a big hammer!
by andrew Ivimey
Mon Oct 05, 2009 12:58 pm
Forum: Everyones Projects
Topic: 26 pre-amp
Replies: 473
Views: 93085

I'm no expert and here's a for example why... I think I posted that the cap/resistor could go to the positive end of the heater. I did my GK71s to the negative end of the heater (contrary or what -hm) Are you saying then, that both ways work and one sounds better? I'd go with what sounds better. Tho...
by andrew Ivimey
Mon Oct 05, 2009 12:53 pm
Forum: Everyones Projects
Topic: GK71 speermints
Replies: 284
Views: 83913

The Rubaiyat of Omar Khayam!

work, work, work! I want a holiday.
by andrew Ivimey
Sun Oct 04, 2009 9:11 pm
Forum: Everyones Projects
Topic: GK71 speermints
Replies: 284
Views: 83913

better chokes - phroooooaaaaaaar - good idea Andrew . I know its evening and shiraz cabernet has been quaffed but even so! So, Let's wait till '...the Sun, who scatter'd into flight The Stars before him from the Field of Night, Drives Night along with them from Heav'n, and strikes The Sultan's Turre...
by andrew Ivimey
Sun Oct 04, 2009 8:15 pm
Forum: Everyones Projects
Topic: GK71 speermints
Replies: 284
Views: 83913

Well done Simon - and it prob. was 'smash'. 'sa long time ago.

Beefboy it was then, thoughtit rang a very distant bell.

I've decided, as I only get 90volts on the 12GN7 anode, that there is scope for something better...
by andrew Ivimey
Sun Oct 04, 2009 3:16 pm
Forum: Everyones Projects
Topic: GK71 speermints
Replies: 284
Views: 83913

Hold on .... It's Captain Beefheart or I'm an avuncular chum of a monkey.

onwards ...
by andrew Ivimey
Sun Oct 04, 2009 3:13 pm
Forum: Everyones Projects
Topic: GK71 speermints
Replies: 284
Views: 83913

I know, that's your excuse and you are sticking to it. I googled your doggerel and found all sorts of sweet poems, (from some sort of word match, I suppose), without finding the actual one you quote. You've lost me on Tupac but Stephen Dedalus' real 'great artificer' is a favourite. Anyway here's th...
by andrew Ivimey
Sun Oct 04, 2009 1:08 pm
Forum: Everyones Projects
Topic: GK71 speermints
Replies: 284
Views: 83913

A phrase may have occurred to one or two readers; now what was it ...?

ah yes,


'ad hominem'

we could talk load lines you know

however, no prizes for the one who remembers where this line comes from.

'You hum it and I'll kick yer face in!'
by andrew Ivimey
Sun Oct 04, 2009 10:27 am
Forum: Everyones Projects
Topic: GK71 speermints
Replies: 284
Views: 83913

Old Nick! you're invited!!! hahhaahahahahahahahahahaha - wish I'd said that, etc etc etc.
by andrew Ivimey
Sun Oct 04, 2009 9:57 am
Forum: Everyones Projects
Topic: 26 pre-amp
Replies: 473
Views: 93085

Well lookeeehere, it seems to me that things need to get much simpler. All those sexy little sinner chokes of the milliHenry variety are all very well but really their job is to a) look good and b) deal with r.f., hash and other noises. Its yer basic filter of big cap and Henrys sized Chokes that ta...
by andrew Ivimey
Sun Oct 04, 2009 9:52 am
Forum: Everyones Projects
Topic: GK71 speermints
Replies: 284
Views: 83913

Local fest is definitely called for. The good thing about Philip's place is not that his listening room in a dead good size, nor that he lets us take over the kitchen to brew coffee and cook samozas, nor is it his excellent soup, his kind hearted tolerance of those considerably younger than himself ...
by andrew Ivimey
Sun Oct 04, 2009 9:44 am
Forum: Everyones Projects
Topic: 2A3 Monkey
Replies: 126
Views: 38716

rock n Rolled out of bed this morning. Now why dooes that cure the prob? I am well aware of, for example, the rf-ishnes of 6S45PE and 5842; kind of in the nature of things. Grid leaks have to be as close as possible and I solder all the internal connections together, once trying 100ohms resistors to...
by andrew Ivimey
Sat Oct 03, 2009 4:02 pm
Forum: Everyones Projects
Topic: GK71 speermints
Replies: 284
Views: 83913

Ummmmmmm, sanity is a moveable feast and as I have four '-ology' degrees, you know, I think I might actually be a scientist.




But at heart, I'm a poet!
by andrew Ivimey
Sat Oct 03, 2009 4:00 pm
Forum: Everyones Projects
Topic: 26 pre-amp
Replies: 473
Views: 93085

Well 26s are the very devil to get right and although I have (up to a satisfactory point), I think you should just start again, make things smaller and don't worry about this star earth stuff. I don't think I have ever used a star earth and I certainly don't bother with snubbers. Your wiring is alwa...
by andrew Ivimey
Sat Oct 03, 2009 3:37 pm
Forum: Everyones Projects
Topic: GK71 speermints
Replies: 284
Views: 83913

I suppose some of you are wondering where the output transformers are! Well I tell ya ... They are underneath! I screwed things in above and things in below so the whole amp is smaller than it normally would be. I think I need a mains switch somewhere too. One hour in and the heater transformer is n...