OBP-2 Concentric Pot Wiring

Hi all

I've searched the forums for quite a while and I can't seem to find the answer I'm looking for so here I am, yet again adding to the pile of pre-amp wiring questions... Sorry!

Here's my query:

My current bass build has Aguilar 4 string PJ passive pickups. I'm going to install the Aguilar OBP-2 preamp too so I'll have the option to run it active or passive with a DPDT on-on switch.

I'd like to have a concentric pot to control the bass/treble to save some space as I'm not too keen on having a cluttered setup. The Aguilar diagram says it needs a "Dual 50k Lin." concentric knob - Does this mean that the whole stack is 100k, or that they both add up to 50k?

Also, when running passive will I be able to change the tone using these knobs or will I have to install a passive tone knob too?

I've attached my wiring diagram I've made, bit awful but you get the jist!


Hopefully I've explained myself well without rambling on! Thanks for your help!

 

And for the passive tone? Will I need a separate knob?

 

Thanks for the help! I've tried to scrounge together my wiring from Aguilar's here - http://www.aguilaramp.com/wp-content/uploads/wiring-diagram-obp-2-v2.pdf