What To Do With Those 2SJ28's

[M_Balou]

The "Z" meter 🙂

Yep ! like Papa´s SIT-1....
the "sweet spot" is all you need to know !! 😀

 

[M_Balou]

The "Z" meter 🙂

😱 oh, and, Michael, i almost forgot, you did it yourself. ages ago,
on page 19 of your first L’Amp-paper...

 

[Nelson Pass]

DIY version of Imperial.

Here's a pic of mine, and a photo of the crossover network

(ruler included to show scale)

 

[Gyuri]

Fugly DIY pieces! 😉

 

[Gyuri]

BTW, I like those casters.

 

[Zen Mod]

Here's a pic of mine, and a photo of the crossover network

(ruler included to show scale)

here is picture of later , proper , iteration

 

[plasnu]

Great to have a chance to peep one of the master's reference speakers. Thank you.

 

[WalterW]

here is picture of later , proper , iteration

 

[Soundhappy]

Damping crossover capacitors and the coils with material who soft tiny mechanical vibrations and his contact with wood surface

 

[Soundhappy]

All the best amplifier designs start with the faceplate, right? 🙂

See Uncle new amp faceplate can match Papa speakers perfectly after touch of varnish haha

 

[Michael Rothacher]

See Uncle new amp faceplate can match Papa speakers perfectly after touch of varnish haha

Once we get these built,maybe we can send them on tour, and maybe Papa would allow them to spend a little time at SR. Perhaps the tour could end in France? 🙂

 

[Soundhappy]

Once we get these built,maybe we can send them on tour, and maybe Papa would allow them to spend a little time at SR. Perhaps the tour could end in France? 🙂

Yes let's dream about semiconductor triodes at ETF 3 day's DIY meeting
https://en.wikipedia.org/wiki/European_triode_festival
VinylSavor: European Triode Festival, ETF 2016 - recap

 

[Michael Rothacher]

Just finishing up some woodwork today. 🙂 Poly coat tonight.

The big ones are "L'Amp Revisited".

 

[Michael Rothacher]

Another.

 

[Dennis Hui]

Ohhh....very nice Mike. I see pretty heatsinks and transformers too.

Cheers,
Dennis

 

[Michael Rothacher]

Test fitting some stuff.

 

[vdi_nenna]

Beautiful stuff as always, Micheal.

Question- where's the best place to implement a meter to measure current draw? Across a bias resistor with a DC meter or inline ammeter? On a stereo amp, would the power supply be the place to work from?

Thx,

Vince

 

[Michael Rothacher]

Either way is workable. The little amps use a 3A FS meter in series with the L in the CLC. Or you can sample voltage, e.g. across the R in a CRC, source resistor, etc. 🙂

 

[Michael Rothacher]

I see pretty heatsinks and transformers too.

The "Indian Jones" archive is catching up to Nelson..

Well, maybe not quite, but I'm building a bunch of stuff to make to make room anyway. 🙂

 

[vdi_nenna]

Thx.