Bartolini and Aguilar wiring help

sixstringpoet · #1 09-21-2009, 07:24 PM

I have this Cort gb75 that i would like to upgrade. I already removed the mighty mite pickups and installed a bartolini mm pickup, i switched the neck pickup from the jazz to a soapbar bartolini ( i need to route just a tiny bit for it to fit) i have a aquilar obp-3 preamp for this bass also. This bass only has 3 holes for knobs and 2 holes for switches. I was wondering is it possible to wire this bass with:

volume / blend - concentric knob
treble / bass - concentric
Mid / mid freq. - concentric

and then two coil tap switches (one for each pickup)
and one active passive switch (i know i will need to route another hole)
if this would be possible can anyone post a wiring diagram or point me in the right direction, i wont be doing the installation, i am taking it to a shop. but i would like to already have a diagram for him.

any help will be appreciated.

**line6man** · #2 09-21-2009, 07:57 PM

If you are taking it to a shop, they should know how to do this already without any diagrams other than the color code for the pickups and preamp.
Part of the job is that they should have a basic understanding of how to wire a bass, not just the soldering skills to do it.

In either case, I can draw you one if you really need it.

Volume/Blend could be an issue as you would need a triple ganged pot with one shaft controlling one pot, and a second shaft to control the other two pots.

I believe MEC may sell a pot like that, you would have to read through their website.

Bass/Treble stack is fine.

I am almost certain that you will never find a pot to do Mid/Mid Frequency.
You would again need a triple ganged pot with one shaft to control the first pot, and a second shaft to control the other two pots, but the first pot would have to be 50K and the other two would have to be 500K, and you need all three pots to be linear taper. On top of all of that, you need a center detent on the first pot...

Active/Passive switch is fine.

jworrellbass · #3 09-21-2009, 08:10 PM

Why don't you just do a volume/ volume stack? Or 2 push/pull volume pots for coil tapping.
http://bestbassgear.com/aguilar-obp3-preamp.htm
You can do a push/pull mid pot.
Just adding my thoughts.

**line6man** · #4 09-21-2009, 08:21 PM

Quote:

Originally Posted by jworrellbass

Or 2 push/pull volume pots for coil tapping.

AFAIK, Bartolini's are not tappable, unless you meant coil splitting?

jworrellbass · #5 09-21-2009, 08:29 PM

You're right coil spliting is the correct term. The op wrote coil tap, I was using his lingo.

Btw is their a difference? I've heard it called both.

sixstringpoet · #6 09-21-2009, 09:04 PM

Alright so a:

volume / volume concentric
mid / mid freq. push pull knob
bass / treble concentric

two coil splitting switches and one active passive switch.
If that will work i would be happy with that.

jworrellbass · #7 09-21-2009, 09:07 PM

Three knobs, three switches, sounds good. Any good tech should have no problem with that.

**line6man** · #8 09-21-2009, 09:24 PM

Quote:

Originally Posted by jworrellbass

You're right coil spliting is the correct term. The op wrote coil tap, I was using his lingo.

Btw is their a difference? I've heard it called both.

Oh, I guess I missed that part in the OP

In either case, my post still remains relevant.

Yes, there is a difference.
Coil split refers to switching between humbucker and single coil modes.
Coil tap refers to switching between the full winding of a coil and a tapped portion of that coil. Coil tapping only applies to pickups with coil taps in their windings, which Bartolini's do not have.

People usually mix the terms up, and I'm usually the only guy that cares, because I like to keep the terminology straight.

**line6man** · #9 09-21-2009, 09:27 PM

Quote:

Originally Posted by sixstringpoet

Alright so a:

volume / volume concentric
mid / mid freq. push pull knob
bass / treble concentric

two coil splitting switches and one active passive switch.
If that will work i would be happy with that.

Yep, that will work.

sixstringpoet · #10 09-21-2009, 09:33 PM

Thank you, thank you everyone. i will order the pots and switches and then off to the shop i go.

peace.

jworrellbass · #11 09-22-2009, 06:46 AM

Quote:

Originally Posted by line6man

Oh, I guess I missed that part in the OP

In either case, my post still remains relevant.

Yes, there is a difference.
Coil split refers to switching between humbucker and single coil modes.
Coil tap refers to switching between the full winding of a coil and a tapped portion of that coil. Coil tapping only applies to pickups with coil taps in their windings, which Bartolini's do not have.

People usually mix the terms up, and I'm usually the only guy that cares, because I like to keep the terminology straight.

Thanks, I always wondered if thier was any difference.