Author Topic: Inherited a bunch of Toshiba 2SB54's...what to build with them?  (Read 3577 times)

mordechai

Inherited a bunch of Toshiba 2SB54's...what to build with them?
« on: January 22, 2016, 11:10:33 AM »
Any suggestions?  Haven't tested them yet but how have you used them and in which circuits have you found success with them?

garcho

Re: Inherited a bunch of Toshiba 2SB54's...what to build with them?
« Reply #1 on: January 22, 2016, 11:23:56 AM »
EDIT: sorry, i didn't read your post closely
« Last Edit: January 22, 2016, 01:08:21 PM by garcho »
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mac

Re: Inherited a bunch of Toshiba 2SB54's...what to build with them?
« Reply #2 on: January 22, 2016, 12:34:39 PM »
If you're familiar with the deacy amp schematic they were used in old japanese radios before the power amp. The amp section used 2SB56.

I have a lot of them, hfe around 100 and leakage 100-150ua or less.

The internal capacitance make them perfect for all kind of fuzzes, FF, TB, etc.

mac
mac@mac-pc:~$ sudo apt-get install ECC83 EL84

GibsonGM

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Re: Inherited a bunch of Toshiba 2SB54's...what to build with them?
« Reply #3 on: January 22, 2016, 01:10:37 PM »
If you're familiar with the deacy amp schematic they were used in old japanese radios before the power amp. The amp section used 2SB56.

I have a lot of them, hfe around 100 and leakage 100-150ua or less.

The internal capacitance make them perfect for all kind of fuzzes, FF, TB, etc.

mac


+1      I recently 'found' a couple of them from an old Japanese radio, as mac said. I had tossed them in the bin years ago, thinking "low gain, and leakage"....then I rediscovered the venerable Fuzz Face.    Just for curiosity's sake, I boarded one up, leakage or no....WOW.

Amazing fuzz, lots of Jimi going on over here.   Ice cold practice room, warm - same tone so far w/little bias adjustment needed as temp changes.

I had passed them over due to 'conventional wisdom', and it turns out they're IDEAL for this.  Not that all of them would be, but hey, simple build, worth a try!   I got a more reliable meter for hfe, and found one to be 70, the other 130 :) 

Roger Mayer 'Hendrix Fuzz' version, bias on Q2 emitter is 3.2k with a 2k fuzz pot + 20u cap in PARALLEL with it, just for comparison, and 500k vol. pot (what I had around).   2.2u on the input cap sounds wooly to me, so will be putting a smaller one in...
MXR Dist +, TS9/808, Easyvibe, Big Muff Pi, Blues Breaker, Guv'nor.  MOSFace, MOS Boost,  BJT boosts - LPB-2, buffers, Phuncgnosis, FF, Orange Sunshine & others, Bazz Fuss, Tonemender, Little Gem, Orange Squeezer, Ruby Tuby, filters, octaves, trems...

Kipper4

Re: Inherited a bunch of Toshiba 2SB54's...what to build with them?
« Reply #4 on: January 22, 2016, 01:40:47 PM »
I'll have to look at that one Gibson.
I have some nice germs.
What are you going to try on the input ?
470nf ? 220nf ?
Just being nosey I know I'm gonna learn to love building fuzzes. I'm just not feeling it yet.
I've built one or two. One of which I love but haven't got round to boxing yet that is Macs Tres Hombre.
It's in his gallery some where here.
I love my decay too. It's too dark and woolly without a treble booster for my taste. I Probably should get some better transformers......


Call it research for future projects.
Thanks
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otherwise, you might end-up with SOIC or gullwings, for surface mounts."


Smoke me a Kipper. I'll be back for breakfast.

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GibsonGM

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Re: Inherited a bunch of Toshiba 2SB54's...what to build with them?
« Reply #5 on: January 22, 2016, 03:07:18 PM »
Same here, Kipper (have built Si FF's, not a big fan, too much the Big Muff....)...I'm going to pop a 220n in there, yes! 

The Ge have made a very big difference, to me.   If it's going to be a fuzz, I really want it to be "live Hendrix" rather than Smashing Pumpkins - who I love, but just don't play like :)   There is something more 'shredding' sounding to the SB's, in my opinion (compared to Si)...
MXR Dist +, TS9/808, Easyvibe, Big Muff Pi, Blues Breaker, Guv'nor.  MOSFace, MOS Boost,  BJT boosts - LPB-2, buffers, Phuncgnosis, FF, Orange Sunshine & others, Bazz Fuss, Tonemender, Little Gem, Orange Squeezer, Ruby Tuby, filters, octaves, trems...

Kipper4

Re: Inherited a bunch of Toshiba 2SB54's...what to build with them?
« Reply #6 on: January 22, 2016, 03:42:27 PM »
I'm sure Macs is Ge.
I like an Axis face Ge/Si but it needs a boost after.
Thanks I find a 220nf is much less woolly on the bottom end than a 2u2 too. Still plenty of bottom with single coils.
Bout time I got my Aria custom shop 70's to try some buckkys.
"Duck_Arse
otherwise, you might end-up with SOIC or gullwings, for surface mounts."


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/

GibsonGM

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Re: Inherited a bunch of Toshiba 2SB54's...what to build with them?
« Reply #7 on: January 23, 2016, 09:48:20 AM »
I'll be looking at the Tres Hombres  ;)
MXR Dist +, TS9/808, Easyvibe, Big Muff Pi, Blues Breaker, Guv'nor.  MOSFace, MOS Boost,  BJT boosts - LPB-2, buffers, Phuncgnosis, FF, Orange Sunshine & others, Bazz Fuss, Tonemender, Little Gem, Orange Squeezer, Ruby Tuby, filters, octaves, trems...

Kipper4

"Duck_Arse
otherwise, you might end-up with SOIC or gullwings, for surface mounts."


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/

mac

Re: Inherited a bunch of Toshiba 2SB54's...what to build with them?
« Reply #9 on: January 24, 2016, 10:50:50 AM »
Quote
I'm sure Macs is Ge.

I have lots of Matsushita 2sa101/102, TI 2n388, Toshibas 2sa49/52/53, etc., that have low hfe, <50, for some old fuzzes. I wanted to give them some use.
Tres Hombres is the result :)
Mine has 3 x 2sa102, hfe<40.

mac
mac@mac-pc:~$ sudo apt-get install ECC83 EL84

Plexi

Re: Inherited a bunch of Toshiba 2SB54's...what to build with them?
« Reply #10 on: February 11, 2017, 03:20:41 PM »
Yesterday I found when I went to buy cable and tin several 2SB54 in a local electronic shop.
I'm seeing where I can use them; some PNP sunface, or maybe Fulltone 69'.
To you, buffered bypass sucks tone.
To me, it sucks my balls.

PEPPER!

Re: Inherited a bunch of Toshiba 2SB54's...what to build with them?
« Reply #11 on: February 11, 2017, 05:42:33 PM »
If they have lower gains (20-60) and some leakage they may sound good as Q1 in a Harmonic Percolator or Percolator-inspired circuit.  I had some leaky, low-gain 2SB49s that sounded better than the correct part (2N404) in my opinion.  Also search for Jimi Photon's designs on this forum - especially the Juergulator - as he's come up with some great sounding fuzzes and ODs that make use of random Ge transistors.

Plexi

Re: Inherited a bunch of Toshiba 2SB54's...what to build with them?
« Reply #12 on: February 11, 2017, 08:08:45 PM »
I've measured a pair of them.
They're 110 and 120 hfe.. a bit high for a ge transistor I guess..
To you, buffered bypass sucks tone.
To me, it sucks my balls.

JebemMajke

Re: Inherited a bunch of Toshiba 2SB54's...what to build with them?
« Reply #13 on: February 12, 2017, 04:08:54 AM »
Fuzz factory

Plexi

Re: Inherited a bunch of Toshiba 2SB54's...what to build with them?
« Reply #14 on: February 12, 2017, 01:05:00 PM »
Exactly there where I used the pair I mentioned.
I used sockets and 2n3906 provisionally.
To you, buffered bypass sucks tone.
To me, it sucks my balls.