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  1. Diego

    Question about similarity between Bassman-based preamp circuits

    Thank you for sharing all of this, it has helped me immensely! The truth is, I did not really understand all this stuff ;) What I did is accept facts I read, for example that mu-amps are vertically stacked and are self-biasing, or that you might have to scale tone stacks according to impedance...
  2. Diego

    Question about similarity between Bassman-based preamp circuits

    So can somebody please tell me if I understood right, because this is hard to grasp for me: Mu-amp in general: JFET 1 acts as an active load for JFET 2 -> source 2 to drain 1 SRPP: JFET 1 gate is directly connected to voltage divider to bias (DLS II) Mu-amp: JFET 1 gate is directly connected...
  3. Diego

    Question about similarity between Bassman-based preamp circuits

    Hahaha, thank you, I'm glad it's not just me. I just was feeling a little bit bad about the little circles I created by not understanding as fast a people answered ;) It is fun, especially as I never cared for the internals and function of circuits, I only wanted tu assemble and then play them...
  4. Diego

    Question about similarity between Bassman-based preamp circuits

    Happened to me several times now where I read through your replies, try to understand everything, and out of that new questions evolve that I eventually ask here, only to realize afterwards that the questions had already been answered and I just didn't get it yet xD Part of the process, I guess...
  5. Diego

    Question about similarity between Bassman-based preamp circuits

    I just looked at the docs for the DLS Mk. I and the DLS Mk. II to try and understand this better. If I'm reading the schematics right, it looks like they both use mu-amp pairs (like Q2/Q3 and Q4/Q5 on both versions), while the Mk. III uses a different design. This brings up another question...
  6. Diego

    Question about similarity between Bassman-based preamp circuits

    Hey everyone, Thank you so much for all the help. I might not be new to building pedals, but I'm definitely new to trying to understand the function of a circuit and modding it to taste. So I'm really glad people are willing to help me and share their knowledge. I realize I'm just at the...
  7. Diego

    Question about similarity between Bassman-based preamp circuits

    Thank you! 1. This makes sense, but I thought the Hi Bass input would be the way to go, so I don't loose signal and have the full frequency range. Did you commonly use the Lo-input with those amps or did I misundersand the schematic and your answer? The High bass input resistance is 68k, isn't...
  8. Diego

    Question about similarity between Bassman-based preamp circuits

    @Locrian99 I am just being specific for no good reason at this point ;) I'm done with the little mod now. In the end, I decided to change the Super Lead side to the Sunn T specs because the globally shared values seemed a bit too off for the Super Lead. I also thought about using the trims from...
  9. Diego

    Question about similarity between Bassman-based preamp circuits

    Hey, I was away for a bit, so sorry for the late reply. I had a proper look at the Super Trouper docs and decided change a few component values on the Super Bass side of the Catalinbread DLS since it is very close to the Supergroup anyways. Also, thanks @ICTRock if that was an offer to send...
  10. Diego

    Question about similarity between Bassman-based preamp circuits

    Thanks for the heads-up, and sorry if I missed something, it’s getting late here
  11. Diego

    Question about similarity between Bassman-based preamp circuits

    That is some nice insight!
  12. Diego

    Question about similarity between Bassman-based preamp circuits

    Thanks for that resource! You are right, that would be catchier, but actually I want to built a preamp in the ballpark of those vintage amps and since I found out the Supergroup is very very close and i am a Sabbath fan I want to build the Laney ;)
  13. Diego

    Question about similarity between Bassman-based preamp circuits

    Alright, that’s kind of what I want to do – identify the component values in a pedal that differ from the Supergroup and change them. Not looking to recreate the whole amp, just get in the ballpark with a preamp-style circuit. Thanks for the example! I actually saw it before but stopped reading...
  14. Diego

    Question about similarity between Bassman-based preamp circuits

    Thank you, that’s interesting! I do know about the Catalinbread Sabbra Cadabra – cool pedal, but I always felt the control layout was a bit limited in terms of flexibility. Also, I thought it wasn’t an actual Supergroup preamp circuit, but more of a soundalike design – kind of like how the...
  15. Diego

    Question about similarity between Bassman-based preamp circuits

    Thanks for the reply, really appreciate it! Checked out the Laney LA30BL – that thing's definitely on my wishlist once the budget allows. Hope your enjoy yours! I read that with older Laneys and Oranges, the power section – including the transformers – had a noticeable influence on the tone...
  16. Diego

    Question about similarity between Bassman-based preamp circuits

    Hi everyone, I’ve read that both the Marshall JTM/Plexi family and the Laney Supergroup are based on the Fender Bassman circuit. I'm unfortunately not very good at reading schematics, so as a Black Sabbath fan I was wondering: Is it possible to recreate the Laney Supergroup sound using a...
  17. Diego

    Alex's Octave-Up Rabbit Hole

    How would you compare Tim Escobedo's Octup Blender to Anderton's Green Ringer? I absolutely love my Shinei Superfuzz clone and want to build an octave-up pedal to recreate different flavors of it with my other drives. I'm also intrigued by the blend feature and the seemingly more robust octave...
  18. Diego

    Maleficent Mids low headroom

    Sorry, I missed your post! I cant record a clip of decent quality now. I changend my pickups in the meantime though and this helped a bit as they are not as powerfull as the old ones.
  19. Diego

    Maleficent Mids low headroom

    I first suspected that there is something wrong with my built until some said it is just how this pedal behaves. Now that you state the opposite, I probably should go back to debugging... Did you try yours with Humbuckers?
  20. Diego

    Maleficent Mids low headroom

    What do you mean with C102?
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