Freed 6L6 Output Transformer

GroupDIY Audio Forum

Help Support GroupDIY Audio Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

CJ

Well-known member
GDIY Supporter
Joined
Jun 3, 2004
Messages
15,664
Location
California
tired of these cheap imitations?  me too.  we need the real deal. and here it is.

this SOB has stubbed my little toe for the last time, and my shelves are about to get lighter.

rr1rg6.jpg


lets go dig for dino at the la brea tar pits,

http://i38.tinypic.com/14ju4af.jpg

http://i36.tinypic.com/23iz1h2.jpg

lap 7 or 8, we will find out,

ok, immediately you see a difference in quality, bigger core, better gap, nicer can, bigger bolts,

see the wood pegs sticking out of the lams holes? that is not wood, it is kp, or kraft paper.

another sign of quality. the fender had over sized bolds crammed into the holes, short out city,

http://i36.tinypic.com/wje8h4.jpg
 
wanted to save the can, but sometimes in life things don't always work out the way you planned,

they really pack a lot of core, these peerless people,
21cw5s2.jpg


took an hour to get fred sprung,
http://i34.tinypic.com/a1lnq9.jpg

http://i33.tinypic.com/34i5n5x.jpg

let's play "count the splices"  ;D  hey, look at the quality factor, insulated splices, give it up!

http://i35.tinypic.com/330efjs.jpg

fun sunday ahead!

http://i36.tinypic.com/xopnq1.jpg
 
ok so it Is wood  in these lam holes, a first for me, every time we open one up, something new, eh?

just take me to las vegas and whatever i say to bet on, do the opposite and you will win big,  :eek: 8) ::)

5zqiie.jpg
:p

 
CJ said:
ok so it Is wood  in these lam holes, a first for me, every time we open one up, something new, eh?

We'll need to know what species of wood, of course.  Maple for a crisp bright tone with enhanced air?  Spruce for a certain woody resonance?  Or maybe a nice piece of ash?

That is one big honkin' stack of lams.  From the close-up it looks like it at least lap 8, maybe more.  How many hours has it taken you to extract the lams?
 
back from the dead, please be careful with this bad flu people,

ok, with that out of the way, where were we before i was so fluidly interupted?  :p ::) ??? :eek:


lets get back into this "peerless" beast,  drillin for oh-all.

egcv4p.jpg


what the.....who the.... ???

ahh, i heard dennis hoyer tellin me the other day that sometimes peerless farmed stuff out to stancor, who would farm stuff out to utc, who would let freed have some biz if the were busy, et

apgy09.jpg
 
we has a 2 inch stack righta hearah, sometimes lap 11, sometimes lap 14,

http://i37.tinypic.com/xpypl0.jpg

a few cross overs for lunch never hurt anybody,

k04qon.jpg


2qwju55.jpg


30mp9af.jpg


2ug05yh.jpg


 
no problem.

hey, we did some research on this weird guy and it Is a Freed after all, not a peerless, so i changed the thread title.

::)

and the impedance is 4,000 ohms, not 8,000.

that would make it 8 ohms output Z.

i will modify that data sheet tomorrow.

 
stupid me, idiot me, vapor brain cj, brain dead retard, you do Not divide turns like resistors,

putting a winding in parallel with another winding does not change the turns ratio, Doh!  ??? :eek: :-[

i knew that, so why did my brain lapse? i am not a brain doctor, , you tell me?

now this reads just like a dirty tennis racket,

i wanna see some panties droppin for all this work,  ;D :D  on my way to fix other damage,

i44vah.jpg
 
ok i finally fixed this for good,

and we figured out what the ol Doc was trying to tell me about root 2,

here is how it goes:

16 ohms divided by 8 ohms is 2, so that is also your impedance ratio.

so if you want to construct a winding with an 8 and 16 output, you will need the root of 2.

for instance, if you want to get from a 16 ohm 142 turn winding, you would divide by root 2,

so 142 / 1.414 = 100 turns, how easy and lazy is that for the engineer?

so you see in the 8 and 16 ohm windings, 100 turns and 142 turns, get it?

you could work it the other way also, from the ground up,

say you have a 8 ohm 100 turn winding, you want a 16 ohm tap.

you multiply by the Z ratio square root, which we already figured out as 1.4.4, and we have

100 * 1.414 = 142 turns rounded up for copper loss.

ok then, here is the final drawing, i will leave the other drawing up so you can see where i f'ed up.

the way i figure it, Google gets advertising money in the billions to look at our data,

we get nothing, so this is a way to stick it to the man, post bad data,  ;D ;D :D :D :D ;D

heck, my rent might even go down.

2monkf8.jpg


 
Back
Top