This is the schematic that I drew up after tracing out the GUMA PCB. Now adjusted and verified.
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| The verified schematic. Tidied up |
All my bits came in last week and I verified my Darkglass B3K clone PCBs. At first it sounded a bit rubbishy, muddy. I realised I had put in a 10nF cap where there should have been a 1nF cap. Desoldered the cap and soldered in a new one (onto the back of the board as it was easier). The other thing is that it needs a jumper on the 100R resistor as it's in the wrong place. I then did an A/B test with the other clone I had built (GUMA drive). Sounded very very close. At the time of testing I was using 2N5458 FETs instead of the J201 FETs (now like unicorn dicks). Next step is to try and replicate the tonestack of the b7k.
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| Top side PCB |
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| Bottom Side PCB |
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| Populated PCB ready for testing |
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| The other side |
That's great! good luck with that tonestack!
ReplyDeleteHey, nice! Can i have the eagle and the pcb file?
ReplyDeleteHey, is possible to get the pcb file for this?
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ReplyDeleteI would be grateful for sending me files that you have for this project even just pics of original pcb. Thank you.
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