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preamp passive tone control mod?

Discussion in 'Bass Guitars' started by cubanbass, Nov 29, 2009.

  1. cubanbass

    cubanbass

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    Hi, first time post here, I have a Streamer CT that I love but am currently trying to get a passive tone control modded or a preamp with one in it. I stumbled upon a youtube video with a Jazzman that has a nice pre setup. I posted a thread in another forum about it...

    Saw this youtube vid of a sweet preamp setup on a Streamer Jazzman. It has the stock MEC pickups and as far as all the info I got from the owner of the bass (via youtube email) he is not sure of the pre but it might be a modified one.

    I asked him if he knew what preamp or if he had a diagram. He did not have a diagram but told me he would get some pics of the control cavity when he has a chance.

    I would love to mod my existing 2 band w/ a passive tone contral or get a similar set up as the Jazzman on the vi w/ a d 3 band. Any thoughts or suggestions? I'll post pics as soon as I get them.

    [video=youtube;Uz9UR1TYmC0]http://www.youtube.com/watch?v=Uz9UR1TYmC0[/video]
     
  2. EVOLVEBASS

    EVOLVEBASS

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    Welcome, Mario.

    I can understand why you might be interested in a 3-band preamp, but why bother adding a passive tone control? They don't really do much anyway - especially since your CT has active pickups...
     
  3. Florin

    Florin Warwick Forum Administrator Staff Member

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    Welcome to the forum CUbanbass :)

    That's our forum buddy Pertyman, cool bassist!

    Let's ask him
     
  4. cubanbass

    cubanbass

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    Thanks for reply!

    Thanks for the reply guys. I checked with him through youtube and I do not think he knows about the type of preamp that is in his bass ( I doubt its a modded MEC preamp). I am curious to see how it is wired though. He is going to get a pic of the control cavity when he has a chance.

    About a tone control on an active pickup like an MEC or EMG. Do they work? I am aware the MEC's are active and even if I pull on my volume to go "passive" if my battery is out I will not get a sound. So passive in this case it just taking the eq. out. A tone control before the eq. should work. In the case of the video there seems to be a change on tone when the eq is bypassed and the tone control was adjusted.

    Recently I have been digging the sound of the bass with the eq bypassed. I seem to lose something in the tone when the eq is engaged. This has started my search for alternatives.
     
  5. EVOLVEBASS

    EVOLVEBASS

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    I'm not sure I understand exactly what you're trying to do, but I thought I'd point out that whatever the dude with the JazzMan is using may not work with your CT. The JM has passive pickups, so having a passive tone control makes sense (check out the LTD 2002, it had one also) - but I'm not sure the same applies to your CT with active pickups...
     
  6. cubanbass

    cubanbass

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    Thanks for clearing that up EVOLVEBASS, it makes a lot more sense now.
     
  7. EVOLVEBASS

    EVOLVEBASS

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    Cool. Go Devils! :twisted:
     
  8. pertyman

    pertyman

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    the way to do it:

    Freinds !
    I'm prety sure that i know what preamp is on my bass - MEC all original !
    Mario the pic's are on the way.
    There should be a single lead from the pull switch that goes direct to the jack socket output - strip a small section of wire from the middle (or cut it in half) and solder that part (or both ends) to the centre tag of a 250k audio pot. Then solder a 0.022uF capacitor from the left hand leg (with the tags facing you and pot shaft upwards), and solder the other end of the capacitor to earth.
    there, you have it...
     

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