Hey Experts NEED URGENT HELP PLEASE!

FunkyMan · #1 03-01-2010, 11:30 PM

Sorry for being so hurry, but i'm only hours away of buying a Aguilar OBP-3 preamp for my Warwick Streamer LX Jazzman 5, I have read before about this, and supposedly i can install it on my bass without problem! the preamp has the following Features:

3 band: bass-mid-treble pots (Mid pot is push/pull for Midrange frequency selection 400Hz or 800Hz) BUT it doesn't come with volume and balance pots. I assume that, the preamp will have the wires to connect the original volume and balance pots.. this is so?? the point is:

-Someone has done this before on a Warwick Streamer Lx Jazzman 5?
-The Aguilar potentiometers will fit on Warwick pots?

Thanks for your time! I hope your answers at the fastest possible!

testing1two · #2 03-01-2010, 11:47 PM

Yes, the original volume and balance pots can be used. If the pickups are passive then the volume & blend pots will probably be 250k. Also, you may want to consider an active/passive switch. They're handy should your 9 volt die during a gig. A push pull volume pot is the easiest way to achieve this.

SebbyNC · #3 03-02-2010, 05:08 AM

I don't know if I'm too late, but before ordering the preamp you may want to check the size of the pots threaded bushing, to make sure they will fit in the mounting holes on your bass. MEC pots tend to have a fairly large bushing, so the Aguilar pots could be too small.

FunkyMan · #4 03-02-2010, 07:29 AM

ok I think everything is fine

, however I am concerned about the active / passive mode, I don't see the wires coming from the preamp for this! (having as reference the diagram is at their website) my active / passive mode is push / pull volume pot onfiguration, this will be disabled perhaps? so just stay active?

SebbyNC · #5 03-04-2010, 06:47 AM

I think you can wire your volume pot/switch so that when the pot is in puched position (active) the switch sends the signal coming from the blend pot to the OBP-3 preamp (blue wire) and sends the signal coming back from the preamp (green wire) to the volume input lug. When in pulled position passive), the preamp is shunted and the switch connects directly the signal coming from the blend pot to the volume. In this case, the volume (250 or 500k pot) is wired AFTER the preamp, instead of BEFORE. That's how my bass is wired (but with a Noll preamp). Maybe there's another solution, but this one should work.
Here's a diagram if you need (assuming your bass came with an MEC volume/push-pull pot):

On this switch (lower part of the pot), in pushed position the middle/outer lugs are connected with their respective bottom lug, while in pulled position they are connected to the top lugs. It should be pretty much the same with non-MEC pot/switches, but all the lugs are aligned instead of being distributed in the MEC's hexagonal shape. Hope my description is clear enough!