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Bartolini TCT Preamp wiring harness...not prewired

I have began dabbling into some DIY bass kits for fun. It is a 5 string dual soapbar setup. The only issue is the electronics are very low end, so I am upgrading the hardware and wiring. Right now I've got about $300 in the project with the kit, and replacing the tuners, bridge, and nut. Since this is a budget learning project, I decided not to buy high end PU replacements. I was able to grab a couple used Shecter passives for $30, so all that is left is wiring.

I initially thought that for simplicity, I would just do a basic passive wiring setup and be done with it. However, a lot of budget basses seem to have the setup of passive PUPs with active EQ, and I like the idea of it for this bass. The problem is that active EQ circuits available seem like they are all or nothing. You can either buy a questionable knock off for $15-20 kit from ebay/amazon/etc, or spend $200+ on a HQ namebrand kit. The cheap kit seems like it will be more headache than anything, and might be pretty crappy. Spending the big bucks on a name brand preamp circuit doesn't really jive with by budget spending on this project. So I have been hunting for options.

Then to my question. I have seen a few places that sell the unwired Bartolini preamp. Specifically, ProAudioLand currently lists it on reverb for $68. Bartolini's website has wiring diagrams, and they seem pretty straighforward. I am not certain if ProAudioLand will include the pots/battery clip/resistors/cap, but I can get those if needed. To me, this seems like solid option to get a solid preamp at a pretty good price. I really could not find anyone mentioning assembling this circuit themselves on here or anywhere else. Am I missing anything? Anyone have any knowledge or experience with this? I am attaching the wiring diagram for reference. Thank you!
 

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As far as I know, all you will get is the preamp module. Keep in mind that the TCT is a treble boost/mid cut/bass boost circuit in it's basic form, but you can add a mid module to gain mid boost as well. The biggest thing will be getting all the ground and jumper wires correct. The TCT is a very tunable preamp and will work wired tons of different ways so it can be tricky to get it "right", so double check your work and take your time.
 
Thank you iplay5strings! I appreciate the heads up about the mid cut. I was initially a bit confused by the schematic and didnt realize that setup just has the trim pot in the cavity and wouldn't be an accessible tonepot.

I have 5 holes drilled on the bass, so my plan is to have Volume, Blend, Bass, Mid, and Treble control. I will most likely go ahead and grab a mid booster module. I can't help but by intrigued by the MCT-3MC to have the 3 different frequency options. It will require putting a switch in the mix, but given that my body is unfinished raw wood at this point, I dont see it being an issue to add a sixth hole.

With that, I am planning to use the TCT-5.4AP schematic, and switch out the 250k 5a5c dual audio taper Blend pot for a 250k MN linear taper pot. My intention initially for the blend pot is to go for the ungrounded method, and cut the traces on each end to hopefully have no load at the extreme ends.
 

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