Ultrasimple SIT PP amp from BAF , or SIT Beast with a Thousand PSUs

[Soundhappy]

I am preparing an article, but you should feel free to go for it on our own.

The parts are very forgiving, but quiet supplies are a good idea.

It be start of build , i have received 2SJ28/SK82 yesterday
and wait for Mr. Pass last word
Have nice day

 

[OllBoll]

It would be very interesting if someone got one running and compared it to the simple sit amp =)

 

[Soundhappy]

It would be very interesting if someone got one running and compared it to the simple sit amp =)

L'Amp is a excellent diy project.
Single - ended only one sit transistor.
Anyway work well if <95 dB efficiency speakers
100 dB or superior be better choice.
New Sony CS is different not caps,resistors or inductors
be very promis but it depends of dac or vinyl ,
horns , speakers , acoustic of the room synergy
the final sound flavor is art to associate this elements
like food in the kitchen so no perfect element
just fun to experiment and enjoy the result.
Same amplifier can work marvelous in one
but less in other audio system.
Make two amplifiers and direct compare is a real solution

 

[nicoch58]

We must send a pair of this complementary to take care of Papa

 

[dimkasta]

OK two more greedy questions...

What is the estimated power output for 8 and 4 ohms?

And could we use both secondaries in parallel and use only the top output device for a SET topology?

 

[OllBoll]

OK two more greedy questions...

What is the estimated power output for 8 and 4 ohms?

And could we use both secondaries in parallel and use only the top output device for a SET topology?

I think Michael investigated using one of the old SITs as a current source in the l amp simple sit which is very similar to this one but dismissed it due to having little transconductance and didn't work well as a ccs in the circuit. http://www.audiohobby.com/pdf/lamp ccs.pdf

 

[Zen Mod]

top as SE...... means two things -

- waste of (lower) SIT as (poor)* CCS

- waste of upper SIT ....... as (poor)* source follower

*there are better parts for task , and much cheaper

 

[dimkasta]

Cool. Makes some sense. I guess I need to do A LOT of reading

Anyway, how is that for an "integrated" variation? Anything we can omit?

 

[Zen Mod]

yup

first buffer is pretty much redundant

 

[PKI]

yup

first buffer is pretty much redundant

Or: " if you have a spare pair of unneeded jfets, you can send it here for a proper disposal"

 

[Zen Mod]

naah ........

but ..... if you have spare pair of beasts with thousand jfets , that's completely different

 

[dimkasta]

Or: " if you have a spare pair of unneeded jfets, you can send it here for a proper disposal"

Nah I m sure I will find something useful to do with them... like earrings for my girlfriend

 

[nicoch58]

For the jensen some one willing for EU group buy ?


is 1:2 or 1:1 (1+1:1+1) ?

 

[Zen Mod]

those are so called 600:600 repeater coils

both primary and secondary comprised of two independent windings , that's more like 150+150:150+150 , tranlsated as 1+1:1+1 , while Papa is using them as 1:1+1

note : when writing ratio ("1" to "something" ) , "+" is not used to represent fashion of connection in actual circuit

 

[jama]

Group buy in EU

Hi, I am interested in joining the group buy of jensen transformer.

 

[hksidney]

Repeater Coils

those are so called 600:600 repeater coils

Hi, I have some 600:600 coils but they have only one primary and one secondary winding. Can I use two coils by putting the primary in parallel ?

Thanks.

Sidney

 

[Zen Mod]

yes , you can ; be sure to take care of polarity , to have what's needed for F6

if I understood ya corectly that you want to use two xformers per channel - paraleled primaries , secondaries per schmtc .......

 

[Zen Mod]

just posted this , by mistake , in F6 thread ........ (and promptly deleted ) :

is there any sissy Yank , in da mood to take care of these EU sissies ..... to buy few Jensens and throw them in their (EU sissies ) direction ?

I'm just asking for them , not interested personally

 

[nicoch58]

 

[massimo]

Pls ZM, translate... your English is too advanced for me