SIT/SIT2

[mkane77g]

Are these offered in DIY form? PCB or a kit. Thanks

 

[Zen Mod]

nope

 

[mkane77g]

Bummer

 

[plasnu]

l'amp is the closest thing we can DIY.

 

[vdi_nenna]

l'amp is the closest thing we can DIY.

Well, sort of, but there is another option.

http://www.diyaudio.com/forums/pass-labs/290776-50w-single-ended-baf2015-schade-enabled.html

 

[Nelson Pass]

Are these offered in DIY form? PCB or a kit. Thanks

Not enough SIT-1 parts to support DIY.

 

[plasnu]

Well, sort of, but there is another option.

http://www.diyaudio.com/forums/pass-labs/290776-50w-single-ended-baf2015-schade-enabled.html

I do not follow this tread, but I'm always interested in this amp. Has anyone actually completed this amp?

 

[vdi_nenna]

I'm still gathering parts and it will be a scaled down version. Output around 15w to 20w.
Just need the power transformers.

 

[jborden]

Schematic

Now that the SIT-1/2 is apparently out of production (at least according to Reno-discontinued), will the schematic be available? Is another part similar to the PASS jfet?

 

[2 picoDumbs]

No point really, as the mosfets are a one off batch never to be manufactured again.
Just build one of the other single ended circuits Papa has published, there are many to choose from.

 

[Soundhappy]

Are these offered in DIY form? PCB or a kit. Thanks

With Mr Pass you get solution to subscribe in near future
to buy new SIT-3 pcb's or kit with Sony vfet's.

http://www.diyaudio.com/forums/pass-labs/307071-what-do-those-2sj28s-21.html#post5108495

Kindest regards

 

[plasnu]

Now that the SIT-1/2 is apparently out of production (at least according to Reno-discontinued)

I thought only SIT-2 would be discontinued for SIT-3 introduction.

 

[vdi_nenna]

What's a sit-3?

 

[plasnu]

See Soundhappy post #11 link.

 

[Nelson Pass]

Now that the SIT-1/2 is apparently out of production (at least
according to Reno-discontinued), will the schematic be available?

It seems to me that the schematics of these have been around for a long
time, in fact I think the owner's manual has enough detail. It's a very simple
circuit - the SIT is biased by either a CCS or some big resistors. Since you
don't have a SIT-1 transistor anyway, the exact resistor values and such
would not be very useful.

The basic circuit of the SIT-3 will accommodate other devices, and I intend
to make the circuit and the Sony VFETs available for DIY. This will be
a Common-Drain application. Those who want Common-Source should
look at projects already in this forum.

 

[WBS]

Jeez, I take a just few months off from the forum and there are all kinds of exciting projects in the works!

We must be experiencing Bucky's Knowledge Doubling Curve in action!

 

[jborden]

Thanks.

It seems like the essential difference between SIT-1 and SIT-3 is the presence of the transformer in the SIT-3 -- would this give more of an "M2" sound to the SIT-3 compared with SIT-1?

I was going to get a SIT-1 from Reno but Mark talked me into the J2 and it sounds so great ... but I have a stash of N100 and R085 ... so could theoretically build my own ... I guess I'd have to build a J2ish and then buy a SIT-1 ...

 

[2 picoDumbs]

The basic circuit of the SIT-3 will accommodate other devices, and I intend
to make the circuit and the Sony VFETs available for DIY. This will be
a Common-Drain application. Those who want Common-Source should
look at projects already in this forum.

Is there no end to your generosity.

 

[jborden]

Is there no end to your generosity.

He is running a rescue for stray SITs. Shhh don't tell him about all the stray capacitors

:bowdown:

 

[Nelson Pass]

It seems like the essential difference between SIT-1 and SIT-3 is the presence of the transformer in the SIT-3 -- would this give more of an "M2" sound to the SIT-3 compared with SIT-1?

The difference in sound would be two-fold, it is a Common-Drain circuit and
uses a transformer, but a different one.