EL34 / KT66 SET

ed · Post by ed » Thu Jun 17, 2010 12:59 pm

ooohhhh...I've just thought about astronomy.....they must be a very schizophrenic(the astronomers) bunch becuase they can never make up their mind's on whether to name a new object after the person that discovered it or just give the new object a number......

anyway the object is real so the number becomes real.......so in the end the number is a name

I can hear the workshop calling really loudly now....make sawdust, make sawdust..its safe and warm in here, make sawdust, make sawdust.....

Dave the bass · Post by **Dave the bass** » Thu Jun 17, 2010 1:16 pm

Nick wrote:
fwiw I think you're going against the grain Nick, theres something very alien going on inside your head.....cue species3
You may be right there Ed

I have no idea what you lot are talking about now

I'm out!

DTB

andrew Ivimey · Post by **andrew Ivimey** » Thu Jun 17, 2010 1:22 pm

how does anyone know the object is real?

cutting, drilling, filing, bleeding.

Dave the bass · Post by **Dave the bass** » Thu Jun 17, 2010 1:36 pm

andrew Ivimey wrote:how does anyone know teh onject is real?

cutting, drilling, filing, bleeding.

There is no spoon.

Oh blimey, I'm at it now.......

DTB

pre65 · Post by **pre65** » Thu Jun 17, 2010 2:56 pm

Back on track ------

Since connecting up the 6.3V centre tap to star ground and fitting an earth lift resistor (10R) and cap ( ? uf , possibly 22uf orange drop) not only is the amp quiet but KT66 sounds a bit more lively than it did last night.

Might I ask Andrew (I) what he has against "star" grounds on amps ?

andrew Ivimey · Post by **andrew Ivimey** » Thu Jun 17, 2010 3:44 pm

Star Earth??? Nothing at all, I just use a long centre line of copper running the length of the amplifier.

Mike H · Post by **Mike H** » Thu Jun 17, 2010 6:38 pm

pre65 wrote:So how might a 6S4s LW sound compared to a "proper" 2A3 ? It is on my list of things to consider, except my decent OPT are 5K

Same here! I dunno I was going to use 5k as well.

Nick wrote:Now, here you see the danger of names. What does Phil mean, does he mean the amp that many have built that comes via Philip that calls itself a loftin-white, but in reality has very little in common with the amplifier described in the paper by Loften and White? Or does he mean something else. Who is to say.

Loftin White Clone then

"Numbers instead" ...

In my case, Aurora version 7 revision 10

And you thought names were bad enough by themselves.

FWIW the name thread persists A. cos it's the currently active SET project (now going on 5+ years IIRC); B. prevous version is made obsolete by newer version and ceases to exist, thus the name is passed on.

The so-called "Rocky sound" is the EL34 I think. It does have its own personality.

Yes mine is a barsteward.

Look at cct, be inspired, then go "Hmm yeah but no but", then throw it away and start it over from scratch

Dave the bass wrote:There is no spoon.

cressy · Post by **cressy** » Thu Jun 17, 2010 9:11 pm

fwiw, my rocky was brill, it was the original version. the original rocky was brill and that was the test bed. eds rocky was brill when i heard it and that was a development in one direction (srpp front end and twin rects if i remember correctly, i havent heard mikes (h) rocky but i suspect it was brill, mike (little eddys) rocky was brill but had a job on driving his zingalis at eggborough but i suspect it was brill at home. is your rocky brill phil? i bet it is.

if it glows its brill. just my skewed perspective on things.............come back rocky all is forgiven, i still havent got a trimphone though

Greg · Post by **Greg** » Thu Jun 17, 2010 9:20 pm

yes, especially if it's brill......................

pre65 · Post by **pre65** » Thu Jun 17, 2010 9:22 pm

Greg wrote:yes, especially if it's brill......................

I have raced at a track in Brill (near Oxford) and it was brill.

Mike H · Post by **Mike H** » Thu Jun 17, 2010 9:34 pm

cressy wrote: i still havent got a trimphone though

Oh good two of us

pre65 · Post by **pre65** » Thu Jun 17, 2010 9:41 pm

Mike H wrote:
cressy wrote: i still havent got a trimphone though
Oh good two of us

I can remember being quite chuffed when I got a push button trimphone at home !

pre65 · Post by **pre65** » Thu Jun 17, 2010 9:45 pm

Still using KT66 and either it's got better, or I have got used to it. Does not sound so laid back now, but (thankfully) not as up front as EL34 was.

Mike H · Post by **Mike H** » Thu Jun 17, 2010 9:55 pm

Well there you go, KT66 is a beam pentode, EL34 isn't, must be something different about how they move electrons about. My EL34's I thought were quite nasty in my Rocky but then, that was during the cathode battery bias try-out fiasco phase and wouldn't you know it, it's got Rifa bypass capacitors as well.

So needs must substitute at some point and give it another go.

audio-talk

EL34 / KT66 SET

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