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PCBs for DIY clone 2-band Preamps

Discussion in 'TalkBass Bazaar: Effects & Electronics' started by UncleFluffy, Feb 1, 2011.

  1. UncleFluffy

    UncleFluffy

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    For the full backstory, see this rather long thread.

    We've been building clone 2-band preamps based on Bajaman's reverse engineering work. The PCBs use artwork that I redid from scratch and had manufactured at a professional board house.


    This was never intended to grow quite as large as it did, so out of respect for TB I'm moving the "PCBs for $" part of things over to the classifieds section.

    Price: the price for one or two boards is the same as it was before: "buy me a beer" - whatever you pay for one beer on a Friday night is enough to cover my costs for a board. Keeps everything in the original just-for-fun spirit and a gives bit of a sliding scale. That includes shipping in the ConUS, further afield just ask, it's usually only $1-2.

    For more than 3 boards, PM me and we can talk.

    There's been a lot of PMs already asking about boards from this batch - I'll catch up with everyone as soon as I can, hopefully by the end of the week.

    Here's the latest batch of boards:

    [​IMG]
  2. i_got_a_mohawk

    i_got_a_mohawk

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    I'm dealing with a couple banking issues at the moment, so I don't know when I'll be able to buy them, but I'm interested in picking up a couple of these new ones, still need to post up a picture of the previous one!
  3. johnk_10

    johnk_10 vintage bass nut Supporting Member

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    by the way, if you want to have a hotter output, you can replace the 220K input resistor with a 100K or 150K one for an increase of about 3db. my MM4.4 pickup seemed a little weak, so that what i did on mine and now it has the same output level as my passive p bass.
  4. i_got_a_mohawk

    i_got_a_mohawk

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    Maybe not the easiest thing to add to a specifically designed board like this, but a trim pot could also be useful? Just give that bit more control for fine tuning.
  5. lowmid

    lowmid

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    pardon my ignorance, but what 2 band pre was reverse engineered here?
  6. johnk_10

    johnk_10 vintage bass nut Supporting Member

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    an early musicman stingray 2 band preamp.
  7. Luckie

    Luckie

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    Does anyone have a Mouser based parts list for this?
  8. MagicMan_841

    MagicMan_841

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  9. BassLife77

    BassLife77

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    http://www.talkbass.com/forum/9162661-post268.html

    Pots:
    http://www.mouser.com/Search/Produc...5K-3virtualkey14860000virtualkey313-1520F-25K

    http://www.mouser.com/Search/Produc...K-3virtualkey14860000virtualkey313-1520F-100K

    http://www.mouser.com/Search/Produc...K-C1Mvirtualkey14860000virtualkey313-1550F-1M

    These pots are for mounting on pickguards and control plates, they might not be long enough to mount through a wood cavity

    I just installed another pre for a $50 OLP MM2 I found in a garage sale. this time used a TLE2071 opamp. sounds great! :hyper: good luck with the builds! :bassist:
  10. BassLife77

    BassLife77

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  11. krovx

    krovx Supporting Member

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    Anyone building these and selling them? :)
  12. UncleFluffy

    UncleFluffy

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    If anyone is, that's cool, but please reply to krovx or anyone else asking by PM instead of posting in the thread.
  13. krovx

    krovx Supporting Member

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    Thanks for making these UncleFluffy! I am sure you have made a lot of people happy! I miss my classic ray :crying:
  14. UncleFluffy

    UncleFluffy

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    Shipped 10 boards out tonight. All US folks should have a PM telling them that their boards have shipped. Those of you further afield will have to wait until tomorrow - I need to go buy stamps :)
  15. BassLife77

    BassLife77

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    Another useful tip, I noticed the junk chinese pickups in these Music Man copy basses just don't cut it. with the preamp installed it just enhances the crapiness. For maximum tone the pickup should be upgraded. If you're a cheap f*** like me and don't wanna pay $100 for a pickup even a GFS or a G&B will sound better. I have both and they sound WAY better than the stock pickups. :bassist: They are both Alnico V's

    http://www.guitarfetish.com/GFS-MM-Pro-Plus-Alnico-Music-Man-style-pickup-INCREDIBLE-tone_p_323.html

    https://geargottago.com/onsale/catalog/product_info.php?products_id=463
  16. karter2000

    karter2000 Supporting Member

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    I received my boards today, and they look fantastic! Thanks again!
  17. UncleFluffy

    UncleFluffy

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    Update: mailed off another batch Tuesday. Will be making a post-office run once for these once a week, so the next lot will probably go out Mon/Tue next week.
  18. Quadzilla

    Quadzilla Supporting Member

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    paid for my 2 boards! :hyper: :bassist:
  19. Passinwind

    Passinwind Charlie Escher Supporting Member

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    Just picked mine up at the post office. Very nicely done, thanks.

    --CE
  20. billdylan

    billdylan

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    Hi there Monsieur fluffy !!...beautifull boards...many thanks again...just got to learn to solder and world domination is only days away..ha..ha

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