2sk77b

[Zen Mod]

tnx to AnthonyA , datasheet , here : Tokin 2SK77B datasheet | Zen Mod Blog

 

[flocchini]

No typo as far as I know. The cap to the left of the 4N37 is labeled 1K (1000uF) and the cap at the speaker output is labeled 10K (10,000uF).

I have built this circuit with those values and it works and it sounds great. Not with 2SK77B of course, but with THF-51S.

Great meeting you at BA2019

Did you use the ixfn140n20p in your build?

Thanks

Bob

 

[Ben Mah]

Hi Bob,

It was great meeting you too. It was my first BAF and I had a great time.

I did use the IXFN140N20P for the CCS.

You mentioned that your were working on this amplifier too. Is it nearly finished?

Ben

 

[flocchini]

Hope to see you at many more.

I have one channel working - hopefully during the next week or so I will get the other going.

Thank you

 

[Zen Mod]

K, m, dilemma , whatever

use fine , fast , settable B-

5V is enough , negative

even 7905 will work (put some shunt load on output , say 15mA will do the job so 330R regular resistor will do) , though LM431 or LM336Z-5 are better for better sleep , if nothing else

 

[Dennis Hui]

Hey Bob and Ben,

Seeing both of you building this amp using the Tokin Vfet is quite
an inspiration. I hope to give it a try later.

Cheers,
Dennis

 

[flocchini]

Inspired by the sound of SissySit !!!

 

[Zen Mod]

oh yeah , that one is sissy sounding one

 

[flocchini]

At some point I will have to build an amp that doesn't use unobtanium
Only have 4 THF-51S spares

 

[Zen Mod]

plenty for a lifetime worth of amps

further projects , yup, why no toobz?

 

[flocchini]

always open to toobz

 

[Zen Mod]

feel free to proceed with e-mails , regarding toobz

now got to sleep a little , sorta arriving in proper time-space continuum

 

[flocchini]

You must be on CA time

It would be hard to beat the Sissy

Also want to hear that F8 and a XA25 with my speakers

Talk about a Greedy Boy

 

[WBS]

Bob if you pull that off, I'd like to have a listen! Maybe an A/B session after the final F8 design is released.

 

[Ben Mah]

Hey Bob and Ben,

Seeing both of you building this amp using the Tokin Vfet is quite
an inspiration. I hope to give it a try later.

Cheers,
Dennis

Hi Dennis,

You definitely should build it.

It was a great BAF, meeting you, and Zen Mod, too.

Ben

 

[flocchini]

Bob if you pull that off, I'd like to have a listen! Maybe an A/B session after the final F8 design is released.

I'll work on it

 

[AnthonyA]

Hey zenmod
Most welcome
Hope my mistress did a good job.. Took a foto but it's not clear and got to scan it.good mistress.

So are u going to do with 2sk77b? PAPA design or gonna make a greedy Boyz version?

 

[Zen Mod]

time will tell and I'll show what I did

 

[chede]

Hi Bob,

was great seing all of you at BAF too ...

... please listen to Zen Mod and don't dissmiss some toobz against the SissySIT too easily ... after I built the SissySIT, my newest build is an EL84 PP tube amp.

And what do I have to say, I like it as much as my SissySIT with my speakers

It's a John Broskie design, and the thread about it is here:
Unexpectedly good EL84 amp
... my build is towards the end ...

I got some good tips regarding my bias circuit from a discussion with Zen Mod at BAF, have to find some time to implement it.


By the way, about half an hour ago I finished the ACP+ ... I bought the last kit that was available at BAF. It's playing right now, and it's sounding veerryy promising with my EL84 (... though now way too much gain in the system)


Sorry for the OT, regards, Claas

 

[flocchini]

Claas

Thank you for the info !!!
I'll check out the thread.


I am open as I emailed to ZM