Hey guys,
it took me a long time to finish this Project. It stopped for the last year because of a bigger health issue. But finally it´s done And it sounds awesome.
https://www.dropbox.com/s/zyhty675qco3xih/SAM_4650.JPG
https://www.dropbox.com/s/kq9qsxqequvp331/SAM_4653.JPG
https://www.dropbox.com/s/renwiuj4gh6qi3c/SAM_4695.JPG
https://www.dropbox.com/s/jo3ehzlu6j59mby/V72%20Front.pdf
The last picture is what the Frontpanel looks like on my prototype. Top left is a DI Input with volumepot.
The middle row on the left is a switch for ramped phantompower, a bright switch for the DI Input with two options in the middle and a switch between Mic and DI. DI goes straight to the grid of the first tube.
Then there is a switch for highpass wich is nothing else than a cap between the two primary windings with a slightly lower value than in the original. Next to it you can switch the primary windings from the input tranny between parallel and series connection of the two windings. All this switches are point to point wired and not on the pcb.
Then there are three rotary switches on the pcb. First is a simple Pad. It´s the same as they used in the V76. Then you can switch between the original V72 and variable gain. So you can choose between both worlds . Then you can switch between 25dB and 55dB. Should be enough for the most situations.
I love this little sucker Would be nice to hear your thoughts on this project.
Cheers
Martin
it took me a long time to finish this Project. It stopped for the last year because of a bigger health issue. But finally it´s done And it sounds awesome.
https://www.dropbox.com/s/zyhty675qco3xih/SAM_4650.JPG
https://www.dropbox.com/s/kq9qsxqequvp331/SAM_4653.JPG
https://www.dropbox.com/s/renwiuj4gh6qi3c/SAM_4695.JPG
https://www.dropbox.com/s/jo3ehzlu6j59mby/V72%20Front.pdf
The last picture is what the Frontpanel looks like on my prototype. Top left is a DI Input with volumepot.
The middle row on the left is a switch for ramped phantompower, a bright switch for the DI Input with two options in the middle and a switch between Mic and DI. DI goes straight to the grid of the first tube.
Then there is a switch for highpass wich is nothing else than a cap between the two primary windings with a slightly lower value than in the original. Next to it you can switch the primary windings from the input tranny between parallel and series connection of the two windings. All this switches are point to point wired and not on the pcb.
Then there are three rotary switches on the pcb. First is a simple Pad. It´s the same as they used in the V76. Then you can switch between the original V72 and variable gain. So you can choose between both worlds . Then you can switch between 25dB and 55dB. Should be enough for the most situations.
I love this little sucker Would be nice to hear your thoughts on this project.
Cheers
Martin