Demeter Pre Schematic

Discussion in 'Roscoe Basses' started by fundamental, Feb 17, 2007.


  1. fundamental

    fundamental

    Joined:
    Apr 25, 2002
    I have a roscoe that I'd like to put a demeter back in to, but I have no idea what wires go where. I wrote demeter, but surprisingly, they weren't much help.

    Does anyone have a schematic they can scan or one in PDF form?

    Big TIA

    -fun
  2. JOME77

    JOME77

    Joined:
    Aug 18, 2002
    Location:
    Georgia
    I'll try to help. Since the pre's come pre-wired for Demeter, the only documentation that they provide is the following:

    The BEQP-1 has two wires from the circuit board.
    1) White wire is hot (+) for bridge p/u
    2) Blue & white stripped wire is hot (+) for neck p/u

    Both gnd. leads (-) from the neck & bridge p/u's should be soldered to the back casing of the volume pot. Ground wire from bridge should be soldered there as well.

    Hope that this helps. If you need more specific's let me know. I can remove the control panel cover and verify some connections for you. Keep in mind though that Demeter did substitute wire colors from time to time.
    I found this out the hard way!:crying:
  3. Jerry Ziarko

    Jerry Ziarko Supporting Member

    Joined:
    Feb 23, 2003
    Location:
    Rochester, NY
    Here you go.....
  4. JOME77

    JOME77

    Joined:
    Aug 18, 2002
    Location:
    Georgia
    Jerry!
    Where in the world did you get that? I purchased 4 Demeters from James and never got anything that defined!
    You're 'da man! :cool:
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  6. Jerry Ziarko

    Jerry Ziarko Supporting Member

    Joined:
    Feb 23, 2003
    Location:
    Rochester, NY
    Na, I'm not. Vic is the man, no wait, Lee is the man. :confused: Vic sent me this diagram when I bought the pre from him. He got it from?? Anyway, it had the name Lee on it. So where ever it came from, it made the installation idiot proof. I mean, even I did it in about ten minutes. ;)
  7. klorence

    klorence

    Joined:
    Nov 21, 2001
    Location:
    Pittsburgh, PA
    jerry that's ultra hip of you to post. someone should put that in a sticky for this forum.

    the first luthier i went to upon receiving my roscoe could've used a diagram like that - he was troubleshooting my pre/pups. demeter was of absolutely no help, unfortunately (numerous calls, messages, emails, etc. w/no response. :meh: )

    in fact, my bridge pickup is currently back at nordstrand's right now - turns out it was (and still is!) the culprit. hopefully it will be back soon & i can hear what my bass is supposed to sound like!
  8. fundamental

    fundamental

    Joined:
    Apr 25, 2002
    OK let's see if this is right. This is the preamp I have, if I have done anything wrong here, I'll correct it and repost

    [​IMG]
  9. Jerry Ziarko

    Jerry Ziarko Supporting Member

    Joined:
    Feb 23, 2003
    Location:
    Rochester, NY
  10. Jerry Ziarko

    Jerry Ziarko Supporting Member

    Joined:
    Feb 23, 2003
    Location:
    Rochester, NY
    credit where credit is due- I think the diagram originally came from lpjiang.
  11. lpjiang

    lpjiang Finally a Roscoehead

    Joined:
    Jul 15, 2003
    Location:
    Taipei, Taiwan
    Yes, I drew that when I sold the Demeter. Glad it helps! :hyper:
  12. funkytico

    funkytico

    Joined:
    Aug 22, 2008
    He guys was wondering if any of you guys had the schematic for the beqp-1 from demeter. It's a bit different from the one in the picture. I'm trying to get it in my bass and sure enough got no diagram with it. anyway any help would be greatly appreciated.
  13. JOME77

    JOME77

    Joined:
    Aug 18, 2002
    Location:
    Georgia
    This is the only one that I have but I believe that it matches the pre in the picture...maybe it'll help though. :)

    Attached Files:

  14. CrashClint

    CrashClint I Play Bass therefore I Am Gold Supporting Member

    Joined:
    Nov 15, 2005
    Location:
    Wake Forest, NC
    Fundamental, you truly would be better off selling it to me. You really don't want to go through the headache of installing the Demeter. :D

    The Demeter works best with the Bart Classic Pickups, if you don't have those in your bass it is a waste of time and you need to sell the Demeter to me.
  15. fundamental

    fundamental

    Joined:
    Apr 25, 2002
    long gone unfortunately. I did install it, but then traded the bass for another Roscoe.

    I've just left the photo up as a public service!
  16. CrashClint

    CrashClint I Play Bass therefore I Am Gold Supporting Member

    Joined:
    Nov 15, 2005
    Location:
    Wake Forest, NC
    I am kinda partial to the Demeter especially with the Bart Classics, you can actually hear a difference with the mid set flat when you flip the switch.

    I like the Glock preamp coupled with the Roscoe Barts. I put one of these preamps in a friends SKB and it sounded really nice, smooth bass, mids and highs.
  17. SeayBass

    SeayBass Supporting Member

    Joined:
    Jan 29, 2006
    Location:
    Washington DC Baltimore VA MD
    link?
  18. JOME77

    JOME77

    Joined:
    Aug 18, 2002
    Location:
    Georgia
    The diagram he was referencing is in post #12
  19. Jerry Ziarko

    Jerry Ziarko Supporting Member

    Joined:
    Feb 23, 2003
    Location:
    Rochester, NY
    Yup, That's it!
  20. JOME77

    JOME77

    Joined:
    Aug 18, 2002
    Location:
    Georgia
    I had to bump this thread back to the top!

    I just installed a Demeter pre in a buddies Roscoe (Spanish cedar with Roscoe/Barts) and was quickly reminded of why I loved the Demeter pre in a Roscoe!

    What a killer finger style and slap tone! :bassist:

    I know that Roscoe doesn't offer these anymore BUT you can order them from Demeter (approx. 4 weeks).

    I still haven't decided if I prefer the Demeter overall over the Audere but I've got say this, the Audere, Aggie & Bart pre's have some nice sounds but they can't cop the sound of the Demeter! :meh:Definitely justifies having 2 fretted Roscoe's!

    IMO it's absolutely unique! Can you say GLASSY highs? :)

    .....I thought you could! :smug:
  21. bkirk

    bkirk

    Joined:
    Oct 2, 2003
    Location:
    Austin, TX
    Joe,
    Thanks for bumping this up to the top. I had been meaning to save that schematic then totally forgot about it. I bought the LG from Jerry Z that he installed the Demeter in; it's exciting just to play that bass (thanks Jerry!). I always play it in the rock&blues band but lately I've also been playing it in the jazz&original band instead of the fretless. It's just hard to put it down!
    Bruce

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