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markwatto1
May 12, 2024
In PCBs and general enquiries
Hi all, I'm building myself an ODS #124 (my last build was sold) .... I can't find the source of the 2 x 300uf 350v caps used in the power section. I've tried Mouser / Element 14 / RS Componants and some local small suppliers .... any suggestions cheers Watto
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markwatto1
Dec 31, 2023
In Show us your builds!
Hi Folks, Happy New Year , I finished my AA wreck build a few months back, It turned out great, played around with it and have got it where I like it . I ended up putting the grid resistors directly on the sockets and not on the board , I played around with output tubes, tried 6V6's , KT66's and ended up with EL34's , Also added the Fischer PPIMV #3 that phase cancels the signal from the grids to of the EL34's , it works OK to a point , from full to about 1/2 is useable , after that it just loses its mojo. I actually keep it on full now . I squeezed it into a combo cabinet slightly bigger than a 5E3 cab, it's so compact that people don't realise the beast inside 😂 and played around with speakers, I ended up with the Eminence Wizard which is great with the circuit , it's a very efficient (103db) 75w take on the Celestion G12H30 , it can handle the EL34's with ease. I did have some issues with the biasing , I tried everything from 50 to 70% plate dissipation , there was serious harsh grainy squawks on certain notes when biased too cold ,I discovered the circuit is best suited to 70% plate dissipation , that's the Wreck spot , anything lower just doesn't seem to cut it . After a few months of testing and playing in gigging situations , I think I'm pretty happy with the results. I used a combination of Jupiter and Sozo coupling caps, basically what I had in my stash , they're still burning in so it'll only get better with age .... It's a little compact combo , a wolf in sheeps clothing .... very happy with the results ... next up a Rocket and a Liverpool here's some pictures regards Mark
Express Combo 1 x 12 content media
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markwatto1
Nov 03, 2023
In PCBs and general enquiries
I have a spare The Train PCB, I've built the Express on one , was going to build the Liverpool on the second one but as they are similar amps , I was wondering if I could do a Rocket instead .... Can this be done ? Cheers Watto
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markwatto1
Jul 19, 2023
In Show us your builds!
Decided I needed a Dumblelator to go with my ODS build , Making it a stand alone buffer . Cut down a rack mount kit chassis , built some mounting brackets and make up a faceplate , Just waiting on some more parts and it ready to go .... Can't wait to hear what it adds to the ODS
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markwatto1

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