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  1. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    Well then, after i will finish with the MK-1/V2 and with the design of MK-II i will start working on a rack unit :D should be fun :D
  2. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    Pfiuu had some trouble with the translation :D but all good now (a friend of mine speaks German :D ) @goldbass yes it would be possible but not in the MK-1/V2 because there is not enough space for another pot, also some small problems can arise from the fact that for a moment the MID pot will...
  3. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    Hello guys, I would like to ask an opinion from you all and see how it goes. I had a discussion with @f_luxus and @lila_vila regarding the MID control on the preamp. The MID control on this preamp at this particular time has a value of 250K (some Alembic F2B units were using this value), having...
  4. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    That is correct, but high voltage and open holes is not something that i would do, dust ...moisture and other things can go inside and cause trouble...i will give it a thought. But, on the MK-II all controls will be on the panel, but the footprint is bigger (twice as bigger than the MK-I)
  5. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    @lila_vila - the access will be like when you change the tube, you put the lid out (4 screws) and you can change the settings. The quality is quite ok as the dip switches are made by omron and that basically dip switches are for this type of action. There will not be any type of holes in the...
  6. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    @Willie - the PCB on V2 is the exact (100%) dimensions with the V1 :) I've kept the same layout, only the jacks are a little bit down, because i've used PCB mounted pots. And between the pots there is some room but is very very tight and would violate some ... design rules.
  7. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    @Willie - those are dip switches. Because of the small footprint is quite impossible to add toggle switches on the top end of the enclosure... so the MK-1 / V2 will have those controls inside. Regards, DeX
  8. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    Good morning guys, A little update on the work i'm doing regarding the bass preamps. Right now the MK-1 V2 is out of the design state. The V2 will keep the same tone quality (of course will keep the high-voltage design) but will have some new features that were asked by some bass players: -...
  9. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    @goldbass do you have this problem only with the precision bass? If so there are couple of reasons and one of the could be a florescent light bulb or noise from the environment (different pickups do have various resonant frequencies) - for example Felix had a "problem" with the booster that i've...
  10. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    Ohh nice! At least is not a defective unit! I'm very glad that you try it. Yes, from 12 oclock up you will start to have a little breakup in the sound. That is not a problem and i'm 100% with you on the same page: taste is not to be discussed as it's something very personal. Regards, DeX
  11. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    @BiBaBass hmmm that is strange but if there is a problem with the preamp I'm more than willingly to fix it. 1 in 50 tubes could be defective and still pass the burnin. What i can tell you for sure is that with an input signal of 2Vpp the distortion comes quite late and with the gain pot over 12...
  12. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    @BiBaBass could you please put in english? I have a little bit of trouble with translate. Thank you in advance. Regards, DeX
  13. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    @goldbass the bright cap is mounted on the gain pot that would enable to keep a higher level of high freq. at lower gain settings. Having it removed would allow the tone stack to have a more pronounced response on the spectrum and would make the tonestack to function on a more wider band. And...
  14. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    You can also play with different settings for volume and gain knobs. For guitar i put the gain a little bit down at 8-9 oclock and play with the volume. Ive used this preamp to record directly in the sound card also to go directly into the mixer without any problems. Regards, DeX
  15. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    @Lopez waw....that is some heavy line...didnt know it can be used like that hahahahha. Thank you Lopez for taking the time to record it. Regards, DeX
  16. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    @BiBaBass - if you like, you can send me the preamp and modify it a little bit with your specific requests without any problems. Adding a supplementary switch for pad attenuation (also if it will arrive at my place i will add the bright switch also and i can also add an angle 2.1mm DC jack for...
  17. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    @BiBaBass - hmmm that is quite strange and the bass output should be quite enormous. Usually there is no problem with the active basses. If i remember well Felix had a problem after a while with the headroom and could be because of the tube - if you like i could send you another 12ax7/ecc83 and...
  18. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    Neahh not a problem at all :) Is just a matter of "where on the pot rotation is a certain value" - :D I've wrote a small explanation on the previous post :D Regards, DeX
  19. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    @Willie - please modify the value for the MID pot to 250K (lin) and you will have the same response (there is a difference of less than 0.3db) :D (my mistake when i've choose the model) - basically is the same TS ... there is a difference on the behavior at the end of the travel for the MID pot...
  20. DeXTeR

    Sammelbestellung Dexter's Preamp (Alembic F2B Clone)

    That is correct @Willie - F2B is based on Fender Showman and indeed the TS is based on Fender TS :) there is no secret about it :D even Alembic said that :D Where is the confusion :D Regards, DeX
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