SissySIT R.3

[glenv6]

pull them, snap on just one (X side) pin, so V pin left free for measurement

Thanks again ZM! Done, and here’s the porn to prove it.

 

[Zen Mod]

 

[randytsuch]

I thought the lettering on the cinemag transformers are on the opposite side of pin 1 so the lettering would be on the inside of the board?

Randy

 

[glenv6]

I thought the lettering on the cinemag transformers are on the opposite side of pin 1 so the lettering would be on the inside of the board?

Randy

Hi Randy - The Cinemags only fit one way. Two of the pins are closer together than any of the others, so you cannot install this any other way.

-Glen

 

[Zen Mod]

don't care for lettering and I'm not sure at all is it having any significance

pitch between pin 1 and 2 is smaller than between rest of pins

that's clue

find pictorial info somewhere in tips and tricks thread ........... post #62 https://www.diyaudio.com/community/...-building-tips-and-tricks.329316/post-5593518

another useful one - all notes in post #1 ....... https://www.diyaudio.com/community/...ysit-general-building-tips-and-tricks.329316/

 

[glenv6]

While I'm waiting for caps and monoblock chassis and other stuff to arrive, I thought I would start sketching out a wiring plan using the boards Zen Mod provided with the SissySit R.3.

I am going to implement a CLC for each monoblock using 33mF Caps and Hammond 159ZJ chokes. I adapted the Mains NTC boards to work with the F6 PSU diagram, which uses 2 CL-60s from the Mains to the transformer.

I banged out these pictures quickly in MS Paint, so they are crude. After I finished I realized I could have drawn the Mains NTC wiring without having to cross wires on the picture - it's not worth going back to correct

Is there anything tragically wrong with my layout?

 

[Zen Mod]

cap bank pcb is OK, NTC pcb is tragic

see:

 

[glenv6]

cap bank pcb is OK, NTC pcb is tragic

see:

This makes sense, thanks for redrawing this! The drawing I found (and now can’t find) showed an NTC on both the 0 and 120 transformer taps which is what I attempted to duplicate using your boards.

 

[Zen Mod]

it is irrelevant on which side of primary you put NTC, as long you have intended number of them

illustration - if you have series RC combo, it is pretty much irrelevant is it RC or CR

comprende?

 

[glenv6]

it is irrelevant on which side of primary you put NTC, as long you have intended number of them

illustration - if you have series RC combo, it is pretty much irrelevant is it RC or CR

comprende?

Si amigo!

update: I found the picture. I edited for clarity. This is what I attempted in my illustration…

 

[manniraj]

Before I start stuffing the amp boards with the parts thought of creating a BOM of all the parts included in the kit based on the schematic. Here is the excel sheet for both the channels that I could find on the schematic and I am yet to reconcile this from the kit of parts that mighty zenmod shipped in the package. I believe his kit is top notch with all the parts exactly per the schematic.

I hope I have not done any mistake with the qty and part numbers.

Thanks

 

[Zen Mod]

find enclosed packing list for R.3

hope that will help

 

[randytsuch]

Before I start stuffing the amp boards with the parts thought of creating a BOM of all the parts included in the kit based on the schematic. Here is the excel sheet for both the channels that I could find on the schematic and I am yet to reconcile this from the kit of parts that mighty zenmod shipped in the package. I believe his kit is top notch with all the parts exactly per the schematic.

I hope I have not done any mistake with the qty and part numbers.

Thanks

Documenting my sissysit build here

I think its a LT3092 instead of 3062 based on schematic

Wouldn't worry too much about qty, you'll find a place for all the parts, and all the holes should be full when you're done.

 

[Zen Mod]

yup, LT3092, it's written loud and clear

 

[manniraj]

yup, LT3092, it's written loud and clear

Oh yes my eyes need to be blamed 🙂

 

[manniraj]

Progress so far with all the parts accounted for in the kit.

 

[manniraj]

@Zen Mod need a clarification with the kit that you sent me, I see that I got 22uf/16v Silmic caps instead of the schematic 10uf/16v for C104/204. I hope 22uf is good enough in this position. Also the C107/108/207/208 schematic says 470uf/16v and I got a slightly different value in the kit. I hope these replacements are good.

Little more progress on R3 today -

Made some cables for the bridge rectifiers to the PSU boards and tested the output voltage with all good so far.

 

[nicoch58]

for what I know is better reverse the psu board..... to have diode >18k -R- 18+18k> out

 

[nicoch58]

@zm an input resistor in psu (RCRC) to lower conduction angle w/o small caps isn't used on psu can I ask why ?

 

[Zen Mod]

@Zen Mod need a clarification with the kit that you sent me, I see that I got 22uf/16v Silmic caps instead of the schematic 10uf/16v for C104/204. I hope 22uf is good enough in this position. Also the C107/108/207/208 schematic says 470uf/16v and I got a slightly different value in the kit. I hope these replacements are good.

input Silmic - more the merrier; when I was ordering them I saw that I can get 22u for same price as 10uF, so why not

caps between output gates - whatever I sent you is OK, going from 330uF to 1mF, voltage 6V3 upwards