GssL 20th Anniversary edition

[janczmok]

A bit of detective work So far i could match everybody correctly.

 

[JMan]

Okay, needed to make some changes to the PCB order (cut lines) - hopefully right now. Also increased the PCB to 10.

Update (29/12): Primary check went thru. PCBs are in production, Secondary check brought issues. Costs might be slightly higher as we need a 4 layer not 2 layer PCB

What changes were needed to make it work with JLC? I was curious and loaded the gerbers into their order page and I see the issue with the the cuts not showing up.

 

[inf0]

Quick question !

I see a lot of 100nf MLCC capacitors in the BOM for the build.
Is it necessary that they remain MLCC or could Wima Polys work for that as well? ( If so , what would you recommend , WIMA polys or TDK C0G MLCC? )
I have no idea if this is a silly question , my goal is to make this with as high quality components as i can

Thank you!

 

[Script]

X7R 0.1 for power rails to amps.
(Polys would work there too. Experimental? But I doubt you'd really hear much of a difference -- if any at all.)

C0Gs across op amps in feedback.

For caps in signal path maybe Nichicon (Muse) BP or Panasonic.

No need to be too picky about poly caps in side chain filters.

 

[inf0]

X7R 0.1 for power rails to amps.
(Polys would work there too. Experimental? But I doubt you'd really hear much of a difference -- if any at all.)

C0Gs across op amps in feedback.

For caps in signal path maybe Nichicon (Muse) BP or Panasonic.

No need to be too picky about poly caps in side chain filters.

Much appreciated ! Thank you

Out of curiosity and learning purposes , are the X7R chosen for a specific reason? Is there a downside on using C0Gs for power rails?

 

[janczmok]

Parcel for shipping arrived today. Currently packing all up! (and finished) All getting out tomorrow

 

[janczmok]

I need slight advice for the power wiring. I got the Triad VPT30-830. Am i correctly assuming:
Primary - 220V blue+brown jumper gray to violet
Secondary 15v wired as Parallel

XE1-3 = AC = BLACK + ORANGE
XE1-2 = GND = GND, NOT CONNECTED ON TRIAD
XE1-1 = AC = YELLOW + RED

Thanks for any advice or help

 

[inf0]

Found this in the original gssl guide

 

[janczmok]

This shows the various options, but i am not certain about the wiring to the main board. Either it's 30V or 15v (Serial vs Parallel) but i am really not experienced on the voltage side of things. Hence my question

 

[Andado]

This shows the various options, but i am not certain about the wiring to the main board. Either it's 30V or 15v (Serial vs Parallel) but i am really not experienced on the voltage side of things. Hence my question

Not 100% sure but I think for us in EU who have 230V in the wall we should have in serial. I saw White Sea Studio built a Gssl and that's how he did it.

 

[janczmok]

the primary side is sorted out, i am talking about the secondary.
Primary - 230V blue+brown jumper gray to violet
Secondary unclear

 

[inf0]

This shows the various options, but i am not certain about the wiring to the main board. Either it's 30V or 15v (Serial vs Parallel) but i am really not experienced on the voltage side of things. Hence my question

From my understanding , they need to be wired in series.
Orange + Red are connected together and used as 0V ?

 

[Andado]

the primary side is sorted out, i am talking about the secondary.
Primary - 230V blue+brown jumper gray to violet
Secondary unclear

17:17

 

[janczmok]

Yes. And everybody is making assumptions. I rather do not go down that rabbit hole
@Gustav - can you clear it up for us; maybe its a stupid request from me, but i want to make it correct.

 

[inf0]

I believe the Lorlin switches in the reichelt bom are the Solder lug type , I've found the pcb pin versions ( BBM ) with these part numbers.

1x12 = CK1049
2x6 = CK1050

 

[Andado]

I believe the Lorlin switches in the reichelt bom are the Solder lug type , I've found the pcb pin versions ( BBM ) with these part numbers.

1x12 = CK1049
2x6 = CK1050

Tme.eu (Poland) have those to at a good price. I like Tme always really fast shipping.

 

[Gustav]

Yes. And everybody is making assumptions. I rather do not go down that rabbit hole
@Gustav - can you clear it up for us; maybe its a stupid request from me, but i want to make it correct.

This is a general electronics question "how to wire a transformer", and not specific to this project.

You will need to figure this one out with the info on your transformer, and you can also use your meter. The good thing is, you can measure the output from the transformer, and as long as its got 15VAC to center tap, and 30VAC side to side, you did it correctly.

Why not just tell you the colours? We dont want you to kill yourself when you get a transformer with a different colour layout on the wires for your next project, and its not that hard to actually just measure before adding it to circuit. This is the one place where you can get in trouble, so the basic understanding is good to have, and not that hard if you take a second to think about it.

Gustav

 

[janczmok]

Thanks for the good guidance on this, so it's 30VAC side to side - that is the information i need to know... Am i assume correctly
XE1-3 = AC
XE1-2 = Center tapped
XE1-1 = AC

I will try and measure it later on today.