Update 5/8-24
Schematics rev 2
PSU
Signal Path
Side Chain & Controls
Board layout
Board
We layed out the board in sections to make it logical to follow for even new builders. This makes routing quite a bit harder.
To cut down the hours needed and make sure we can keep the segregated element layout without any hassle, we routed the signal path on a single layer first with no attention to anything else. Then, we added a layer for supplies, and a layer for common ground. We couldve kept it 3 layer, but since layers come in pairs of 2, we did the 12V supplies and a few utilitarian lines on the 4th layer.
The Gyraf GssL layout features a dedicated PCB for the att/rel/ratio switches, forcing the placement of these. We decided to make sure not to limit the builders freedom to move things around and design their own front, but we added a small auxilary PCB for those switches, so they can easily mount with a connector. (the sizing needs to be checked.
Panel File
Rough panel file uploaded in the google drive folder.
We are going by the idea that youll want to pick and choose which features to incorporate, so it is just a rough draft type layout.
Endpoints for the area you can use are marked to correspond with a modushop 1RU case (We checked and double checked the measurements, but did not have one fabricated).
BOM
Reichelt BOM (sectioned)
THAT1206 Input section
https://www.reichelt.de/my/2174948
NE5534 Input Section
https://www.reichelt.de/my/2174958
VCA Drive
https://www.reichelt.de/my/2174964
Signal Path VCA
https://www.reichelt.de/my/2174966
Side Chain
https://www.reichelt.de/my/2174975
Side Chain Sum
https://www.reichelt.de/my/2174979
Blend
https://www.reichelt.de/my/2174981
THAT1646 Output
https://www.reichelt.de/my/2174988
5532 Output
https://www.reichelt.de/my/2174990
PSU
https://www.reichelt.de/my/2174991
Attack
https://www.reichelt.de/my/2174993
Release
https://www.reichelt.de/my/2174994
Ratio
https://www.reichelt.de/my/2174995
Side Chain HPF
https://www.reichelt.de/my/2174996
Bypass & Misc
https://www.reichelt.de/my/2174997
Example:5534 in/5532 & blend
Total 82,92 euros
Mouser Parts
Standard in- and output - Cart
Total 74,27 euros
1206/1646 in- and output - Cart
Total 106,81 euros
Case
1RU Case
https://modushop.biz/site/index.php?route=product/product&path=165_238&product_id=55
55 euros
Drilling up to 20 holes x 2
https://modushop.biz/site/index.php?route=product/product&path=263&product_id=490
70 euros
Printing (front and back)
https://modushop.biz/site/index.php?route=product/category&path=264
30 euros
Total 155 euros
TO DO
Document values for front panel (att/rel/ratio/SC).
Optimally looking for a volunteer to do the graphics and aeshetics for the panel.
BOM is missing knobs, meter, IEC, Pots and a few connectors.
PCBs
If we can spread the cost for a batch of boards, we will build one to test the design, and when doing so, we will share if any corrections are needed, and also upload the (rev 2 if needed) Gerbers for all to use at their own discretion (as long as that is not any type of mass fabrication
)
https://www.pcbgrinder.com/produktside/20th-anniversary-gssl
Isak & Gustav
___________________________________
From the original post
We are stuck inside because of the rain, and we just got the idea to get started on an "Ultimate GssL"-schematic.
Mainly inspired by this - https://groupdiy.com/threads/gssl-help-thread.47/page-451#post-1152157
Schematics rev 2
PSU
Signal Path
Side Chain & Controls
Board layout
Board
We layed out the board in sections to make it logical to follow for even new builders. This makes routing quite a bit harder.
To cut down the hours needed and make sure we can keep the segregated element layout without any hassle, we routed the signal path on a single layer first with no attention to anything else. Then, we added a layer for supplies, and a layer for common ground. We couldve kept it 3 layer, but since layers come in pairs of 2, we did the 12V supplies and a few utilitarian lines on the 4th layer.
The Gyraf GssL layout features a dedicated PCB for the att/rel/ratio switches, forcing the placement of these. We decided to make sure not to limit the builders freedom to move things around and design their own front, but we added a small auxilary PCB for those switches, so they can easily mount with a connector. (the sizing needs to be checked.
Panel File
Rough panel file uploaded in the google drive folder.
We are going by the idea that youll want to pick and choose which features to incorporate, so it is just a rough draft type layout.
Endpoints for the area you can use are marked to correspond with a modushop 1RU case (We checked and double checked the measurements, but did not have one fabricated).
BOM
Reichelt BOM (sectioned)
THAT1206 Input section
https://www.reichelt.de/my/2174948
NE5534 Input Section
https://www.reichelt.de/my/2174958
VCA Drive
https://www.reichelt.de/my/2174964
Signal Path VCA
https://www.reichelt.de/my/2174966
Side Chain
https://www.reichelt.de/my/2174975
Side Chain Sum
https://www.reichelt.de/my/2174979
Blend
https://www.reichelt.de/my/2174981
THAT1646 Output
https://www.reichelt.de/my/2174988
5532 Output
https://www.reichelt.de/my/2174990
PSU
https://www.reichelt.de/my/2174991
Attack
https://www.reichelt.de/my/2174993
Release
https://www.reichelt.de/my/2174994
Ratio
https://www.reichelt.de/my/2174995
Side Chain HPF
https://www.reichelt.de/my/2174996
Bypass & Misc
https://www.reichelt.de/my/2174997
Example:5534 in/5532 & blend
Total 82,92 euros
Mouser Parts
Standard in- and output - Cart
Total 74,27 euros
1206/1646 in- and output - Cart
Total 106,81 euros
Case
1RU Case
https://modushop.biz/site/index.php?route=product/product&path=165_238&product_id=55
55 euros
Drilling up to 20 holes x 2
https://modushop.biz/site/index.php?route=product/product&path=263&product_id=490
70 euros
Printing (front and back)
https://modushop.biz/site/index.php?route=product/category&path=264
30 euros
Total 155 euros
TO DO
Document values for front panel (att/rel/ratio/SC).
Optimally looking for a volunteer to do the graphics and aeshetics for the panel.
BOM is missing knobs, meter, IEC, Pots and a few connectors.
PCBs
If we can spread the cost for a batch of boards, we will build one to test the design, and when doing so, we will share if any corrections are needed, and also upload the (rev 2 if needed) Gerbers for all to use at their own discretion (as long as that is not any type of mass fabrication
https://www.pcbgrinder.com/produktside/20th-anniversary-gssl
Isak & Gustav
___________________________________
From the original post
We are stuck inside because of the rain, and we just got the idea to get started on an "Ultimate GssL"-schematic.
Mainly inspired by this - https://groupdiy.com/threads/gssl-help-thread.47/page-451#post-1152157
Last edited: